First Try

CMakeLists.txt

@@ -3,6 +3,14 @@
 cmake_minimum_required(VERSION 3.16)
 
 include($ENV{IDF_PATH}/tools/cmake/project.cmake)
-# "Trim" the build. Include the minimal set of components, main, and anything it depends on.
+
-# idf_build_set_property(MINIMAL_BUILD ON)
+add_definitions(
+  -Wno-unknown-pragmas
+  -DMASK_VERSION=0x07B0
+  -DKNX_NO_AUTOMATIC_GLOBAL_INSTANCE
+  -DKNX_FLASH_SIZE=4096
+  #-DKNX_NO_PRINT
+  #-Wno-stringop-truncation
+)
+
 project(knxdisplay)

components/knx/CMakeLists.txt

@@ -0,0 +1,11 @@
+# Define the directory containing your source files
+set(SOURCE_DIR "./src")
+set(SOURCE_DIR_1 "./src/knx")
+
+# Use file(GLOB) to find all .cpp files in the 'src' directory
+file(GLOB SOURCE_FILES "${SOURCE_DIR}/*.cpp")
+file(GLOB SOURCE_FILES_1 "${SOURCE_DIR_1}/*.cpp")
+
+idf_component_register(SRCS ${SOURCE_FILES} ${SOURCE_FILES_1}
+                    INCLUDE_DIRS "./src" "./src/knx"
+                    REQUIRES esp_netif driver esp_timer esp_wifi freertos nvs_flash esp_system) 

components/knx/src/arduino_platform.cpp

@@ -0,0 +1,315 @@
+#ifdef ARDUINO
+
+#include "arduino_platform.h"
+#include "knx/bits.h"
+
+#include <Arduino.h>
+#ifndef KNX_NO_SPI
+    #include <SPI.h>
+#endif
+
+#ifndef KNX_NO_PRINT
+    Stream* ArduinoPlatform::SerialDebug = &KNX_DEBUG_SERIAL;
+#endif
+
+ArduinoPlatform::ArduinoPlatform() : _knxSerial(nullptr)
+{
+}
+
+ArduinoPlatform::ArduinoPlatform(HardwareSerial* knxSerial) : _knxSerial(knxSerial)
+{
+}
+
+void ArduinoPlatform::fatalError()
+{
+    while (true)
+    {
+#ifdef KNX_LED
+        static const long LED_BLINK_PERIOD = 200;
+
+        if ((millis() % LED_BLINK_PERIOD) > (LED_BLINK_PERIOD / 2))
+            digitalWrite(KNX_LED, HIGH);
+        else
+            digitalWrite(KNX_LED, LOW);
+
+#endif
+    }
+}
+
+void ArduinoPlatform::knxUart( HardwareSerial* serial )
+{
+    if (_knxSerial)
+        closeUart();
+
+    _knxSerial = serial;
+    setupUart();
+}
+
+HardwareSerial* ArduinoPlatform::knxUart()
+{
+    return _knxSerial;
+}
+
+void ArduinoPlatform::setupUart()
+{
+    _knxSerial->begin(19200, SERIAL_8E1);
+
+    while (!_knxSerial)
+        ;
+}
+
+
+void ArduinoPlatform::closeUart()
+{
+    _knxSerial->end();
+}
+
+
+int ArduinoPlatform::uartAvailable()
+{
+    return _knxSerial->available();
+}
+
+
+size_t ArduinoPlatform::writeUart(const uint8_t data)
+{
+    //printHex("<p", &data, 1);
+    return _knxSerial->write(data);
+}
+
+
+size_t ArduinoPlatform::writeUart(const uint8_t* buffer, size_t size)
+{
+    //printHex("<p", buffer, size);
+    return _knxSerial->write(buffer, size);
+}
+
+
+int ArduinoPlatform::readUart()
+{
+    int val = _knxSerial->read();
+    //if(val > 0)
+    //    printHex("p>", (uint8_t*)&val, 1);
+    return val;
+}
+
+
+size_t ArduinoPlatform::readBytesUart(uint8_t* buffer, size_t length)
+{
+    size_t toRead = length;
+    uint8_t* pos = buffer;
+
+    while (toRead > 0)
+    {
+        size_t val = _knxSerial->readBytes(pos, toRead);
+        pos += val;
+        toRead -= val;
+    }
+
+    //printHex("p>", buffer, length);
+    return length;
+}
+
+void ArduinoPlatform::flushUart()
+{
+    return _knxSerial->flush();
+}
+
+#ifndef KNX_NO_SPI
+void ArduinoPlatform::setupSpi()
+{
+    SPI.begin();
+    SPI.beginTransaction(SPISettings(4000000, MSBFIRST, SPI_MODE0));
+}
+
+void ArduinoPlatform::closeSpi()
+{
+    SPI.endTransaction();
+    SPI.end();
+}
+
+int ArduinoPlatform::readWriteSpi(uint8_t* data, size_t len)
+{
+    SPI.transfer(data, len);
+    return 0;
+}
+#endif
+
+#ifndef KNX_NO_PRINT
+void printUint64(uint64_t value, int base = DEC)
+{
+    char buf[8 * sizeof(uint64_t) + 1];
+    char* str = &buf[sizeof(buf) - 1];
+    *str = '\0';
+
+    uint64_t n = value;
+
+    do
+    {
+        char c = n % base;
+        n /= base;
+
+        *--str = c < 10 ? c + '0' : c + 'A' - 10;
+    } while (n > 0);
+
+    print(str);
+}
+
+void print(const char* s)
+{
+    ArduinoPlatform::SerialDebug->print(s);
+}
+void print(char c)
+{
+    ArduinoPlatform::SerialDebug->print(c);
+}
+
+void print(unsigned char num)
+{
+    ArduinoPlatform::SerialDebug->print(num);
+}
+
+void print(unsigned char num, int base)
+{
+    ArduinoPlatform::SerialDebug->print(num, base);
+}
+
+void print(int num)
+{
+    ArduinoPlatform::SerialDebug->print(num);
+}
+
+void print(int num, int base)
+{
+    ArduinoPlatform::SerialDebug->print(num, base);
+}
+
+void print(unsigned int num)
+{
+    ArduinoPlatform::SerialDebug->print(num);
+}
+
+void print(unsigned int num, int base)
+{
+    ArduinoPlatform::SerialDebug->print(num, base);
+}
+
+void print(long num)
+{
+    ArduinoPlatform::SerialDebug->print(num);
+}
+
+void print(long num, int base)
+{
+    ArduinoPlatform::SerialDebug->print(num, base);
+}
+
+void print(unsigned long num)
+{
+    ArduinoPlatform::SerialDebug->print(num);
+}
+
+void print(unsigned long num, int base)
+{
+    ArduinoPlatform::SerialDebug->print(num, base);
+}
+
+void print(unsigned long long num)
+{
+    printUint64(num);
+}
+
+void print(unsigned long long num, int base)
+{
+    printUint64(num, base);
+}
+
+void print(double num)
+{
+    ArduinoPlatform::SerialDebug->print(num);
+}
+
+void println(const char* s)
+{
+    ArduinoPlatform::SerialDebug->println(s);
+}
+
+void println(char c)
+{
+    ArduinoPlatform::SerialDebug->println(c);
+}
+
+void println(unsigned char num)
+{
+    ArduinoPlatform::SerialDebug->println(num);
+}
+
+void println(unsigned char num, int base)
+{
+    ArduinoPlatform::SerialDebug->println(num, base);
+}
+
+void println(int num)
+{
+    ArduinoPlatform::SerialDebug->println(num);
+}
+
+void println(int num, int base)
+{
+    ArduinoPlatform::SerialDebug->println(num, base);
+}
+
+void println(unsigned int num)
+{
+    ArduinoPlatform::SerialDebug->println(num);
+}
+
+void println(unsigned int num, int base)
+{
+    ArduinoPlatform::SerialDebug->println(num, base);
+}
+
+void println(long num)
+{
+    ArduinoPlatform::SerialDebug->println(num);
+}
+
+void println(long num, int base)
+{
+    ArduinoPlatform::SerialDebug->println(num, base);
+}
+
+void println(unsigned long num)
+{
+    ArduinoPlatform::SerialDebug->println(num);
+}
+
+void println(unsigned long num, int base)
+{
+    ArduinoPlatform::SerialDebug->println(num, base);
+}
+
+void println(unsigned long long num)
+{
+    printUint64(num);
+    println("");
+}
+
+void println(unsigned long long num, int base)
+{
+    printUint64(num, base);
+    println("");
+}
+
+void println(double num)
+{
+    ArduinoPlatform::SerialDebug->println(num);
+}
+
+void println(void)
+{
+    ArduinoPlatform::SerialDebug->println();
+}
+#endif // KNX_NO_PRINT
+
+#endif // ARDUINO

components/knx/src/arduino_platform.h

@@ -0,0 +1,47 @@
+#pragma once
+
+#ifdef ARDUINO
+
+#include "knx/platform.h"
+
+#include "Arduino.h"
+
+#ifndef KNX_DEBUG_SERIAL
+    #define KNX_DEBUG_SERIAL Serial
+#endif
+
+class ArduinoPlatform : public Platform
+{
+    public:
+        ArduinoPlatform();
+        ArduinoPlatform(HardwareSerial* knxSerial);
+
+        // basic stuff
+        void fatalError();
+
+        //uart
+        virtual void knxUart( HardwareSerial* serial);
+        virtual HardwareSerial* knxUart();
+        virtual void setupUart();
+        virtual void closeUart();
+        virtual int uartAvailable();
+        virtual size_t writeUart(const uint8_t data);
+        virtual size_t writeUart(const uint8_t* buffer, size_t size);
+        virtual int readUart();
+        virtual size_t readBytesUart(uint8_t* buffer, size_t length);
+        virtual void flushUart();
+
+        //spi
+#ifndef KNX_NO_SPI
+        void setupSpi() override;
+        void closeSpi() override;
+        int readWriteSpi (uint8_t* data, size_t len) override;
+#endif
+#ifndef KNX_NO_PRINT
+        static Stream* SerialDebug;
+#endif
+
+    protected:
+        HardwareSerial* _knxSerial;
+};
+#endif // ARDUINO

components/knx/src/cc1310_platform.cpp

@@ -0,0 +1,587 @@
+#ifdef DeviceFamily_CC13X0
+
+#include <cstdio>
+#include <cstdarg>
+#include <cstring>
+#include <cmath>
+
+#include <ti/devices/DeviceFamily.h>
+#include DeviceFamily_constructPath(driverlib/sys_ctrl.h)
+#include <ti/drivers/GPIO.h>
+
+#include "SEGGER_RTT.h"
+
+#include "Board.h"
+
+#include "knx/bits.h"
+#include "cc1310_platform.h"
+
+//#define printf(args...) (SEGGER_RTT_printf(0, args))
+//#define PRINT_RTT
+#define PRINT_UART
+
+static uint8_t serialNumber[6];
+// KNX_FLASH_SIZE shall be defined in CMakeLists.txt for example. It is also used in class Memory in memory.cpp
+static uint8_t NVS_buffer[KNX_FLASH_SIZE];
+
+static UART_Handle uart;
+
+static NVS_Handle nvsHandle;
+
+static ClockP_Handle clk0Handle;
+static ClockP_Struct clk0Struct;
+static volatile uint32_t msCounter = 0;
+
+static void clk0Fxn(uintptr_t arg0)
+{
+    msCounter++;
+}
+
+static void setupClock()
+{
+    ClockP_Params clkParams;
+    ClockP_Params_init(&clkParams);
+    clkParams.period = 1000 / ClockP_tickPeriod;
+    clkParams.startFlag = true;
+    ClockP_construct(&clk0Struct, (ClockP_Fxn)clk0Fxn, 1000 / ClockP_tickPeriod, &clkParams);
+    clk0Handle = ClockP_handle(&clk0Struct);
+}
+
+static void setupGPIO()
+{
+    /* Configure the LED and button pins */
+    GPIO_setConfig(Board_GPIO_LED0, GPIO_CFG_OUT_STD | GPIO_CFG_OUT_LOW);
+    GPIO_setConfig(Board_GPIO_LED1, GPIO_CFG_OUT_STD | GPIO_CFG_OUT_LOW);
+    GPIO_setConfig(Board_GPIO_BUTTON0, GPIO_CFG_IN_PU | GPIO_CFG_IN_INT_FALLING);
+    GPIO_setConfig(Board_GPIO_BUTTON1, GPIO_CFG_IN_PU | GPIO_CFG_IN_INT_FALLING);
+}
+
+static void setupUART()
+{
+    UART_Params uartParams;
+    UART_Params_init(&uartParams);
+    uartParams.writeDataMode = UART_DATA_BINARY;
+    uartParams.readDataMode = UART_DATA_BINARY;
+    uartParams.readReturnMode = UART_RETURN_FULL;
+    uartParams.readEcho = UART_ECHO_OFF;
+    uartParams.baudRate = 115200;
+    uart = UART_open(Board_UART0, &uartParams);
+
+    if (uart == NULL)
+    {
+        while (true)
+        {}
+    }
+}
+
+static void setupNVS()
+{
+    NVS_Params nvsParams;
+    NVS_Params_init(&nvsParams);
+    nvsHandle = NVS_open(Board_NVSINTERNAL, &nvsParams);
+
+    if (nvsHandle == NULL)
+    {
+        println("NVS_open() failed.");
+        return;
+    }
+
+    NVS_Attrs attrs;
+    NVS_getAttrs(nvsHandle, &attrs);
+    print("NVS flash size: ");
+    println((int)attrs.regionSize);
+    print("NVS flash sector size: ");
+    println((int)attrs.sectorSize);
+
+    if (GPIO_read(Board_GPIO_BUTTON1) == 0)
+    {
+        println("Button1 is pressed. Erasing flash...");
+        int_fast16_t result = NVS_erase(nvsHandle, 0, attrs.regionSize);
+
+        if (result != NVS_STATUS_SUCCESS)
+        {
+            print("Error erasing NVS, result: ");
+            println(result);
+        }
+        else
+        {
+            println("NVS successfully erased.");
+        }
+    }
+}
+
+void sleep(uint32_t sec)
+{
+    ClockP_sleep(sec);
+}
+
+void usleep(uint32_t usec)
+{
+    ClockP_usleep(usec);
+}
+
+uint32_t millis()
+{
+    // we use our own ms clock because the Os tick counter has counts 10us ticks and following calculation would not wrap correctly at 32bit boundary
+    //return Clock_getTicks() * (uint64_t) Clock_tickPeriod / 1000; // rtos
+    //return ClockP_getTicks( * (uint64_t) Clock_tickPeriod / 1000); //nortos
+    return msCounter;
+}
+
+void delay(uint32_t ms)
+{
+    ClockP_usleep(ms * 1000);
+    //sleep(ms * (1000 / ClockP_tickPeriod));   //rtos
+    //sleepTicks(millis * 1000ULL / ClockP_tickPeriod); //nortos
+}
+
+void delayMicroseconds (unsigned int howLong)
+{
+    ClockP_usleep(howLong);
+}
+
+#ifndef KNX_NO_PRINT
+size_t write(uint8_t c)
+{
+#if defined(PRINT_UART)
+    uint8_t buffer[1] = {c};
+    return UART_write(uart, buffer, sizeof(buffer));
+#elif defined (PRINT_RTT)
+    return SEGGER_RTT_PutChar(0, (char)c);
+#else
+    return 1;
+#endif
+}
+
+#if 0
+size_t write(const uint8_t* buffer, size_t size)
+{
+    size_t n = 0;
+
+    while (size--)
+    {
+        if (write(*buffer++))
+        {
+            n++;
+        }
+        else
+        {
+            break;
+        }
+    }
+
+    return n;
+}
+#else
+size_t write(const uint8_t* buffer, size_t size)
+{
+#if defined(PRINT_UART)
+    return UART_write(uart, buffer, size);
+#elif defined (PRINT_RTT)
+    return SEGGER_RTT_Write(0, buffer, size);
+#else
+    return size;
+#endif
+}
+#endif
+
+size_t write(const char* buffer, size_t size)
+{
+    return write((const uint8_t*)buffer, size);
+}
+
+void print(const char* s)
+{
+    if (s == NULL)
+    {
+        return;
+    }
+
+    write(s, strlen(s));
+}
+void print(char c)
+{
+    write(c);
+}
+
+void printUint64(uint64_t value, int base = DEC)
+{
+    char buf[8 * sizeof(uint64_t) + 1];
+    char* str = &buf[sizeof(buf) - 1];
+    *str = '\0';
+
+    uint64_t n = value;
+
+    do
+    {
+        char c = n % base;
+        n /= base;
+
+        *--str = c < 10 ? c + '0' : c + 'A' - 10;
+    } while (n > 0);
+
+    print(str);
+}
+
+void print(long long num, int base)
+{
+    if (base == 0)
+    {
+        write(num);
+        return;
+    }
+    else if (base == 10)
+    {
+        if (num < 0)
+        {
+            print('-');
+            num = -num;
+            printUint64(num, 10);
+            return;
+        }
+
+        printUint64(num, 10);
+        return;
+    }
+    else
+    {
+        printUint64(num, base);
+        return;
+    }
+}
+
+void print(unsigned long long num, int base)
+{
+    if (base == 0)
+    {
+        write(num);
+        return;
+    }
+    else
+    {
+        printUint64(num, base);
+        return;
+    }
+}
+
+void print(unsigned char num, int base)
+{
+    print((unsigned long long)num, base);
+}
+
+void print(int num, int base)
+{
+    print((long long)num, base);
+}
+
+void print(unsigned int num, int base)
+{
+    print((unsigned long long)num, base);
+}
+
+void print(long num, int base)
+{
+    print((long long)num, base);
+}
+
+void print(unsigned long num, int base)
+{
+    print((unsigned long long)num, base);
+}
+
+void printFloat(double number, uint8_t digits)
+{
+    if (std::isnan(number))
+    {
+        print("nan");
+        return;
+    }
+
+    if (std::isinf(number))
+    {
+        print("inf");
+        return;
+    }
+
+    if (number > 4294967040.0)
+    {
+        print("ovf");  // constant determined empirically
+        return;
+    }
+
+    if (number < -4294967040.0)
+    {
+        print("ovf");  // constant determined empirically
+        return;
+    }
+
+    // Handle negative numbers
+    if (number < 0.0)
+    {
+        print('-');
+        number = -number;
+    }
+
+    // Round correctly so that print(1.999, 2) prints as "2.00"
+    double rounding = 0.5;
+
+    for (uint8_t i = 0; i < digits; ++i)
+        rounding /= 10.0;
+
+    number += rounding;
+
+    // Extract the integer part of the number and print it
+    unsigned long int_part = (unsigned long)number;
+    double remainder = number - (double)int_part;
+    printUint64(int_part);
+
+    // Print the decimal point, but only if there are digits beyond
+    if (digits > 0)
+    {
+        print('.');
+    }
+
+    // Extract digits from the remainder one at a time
+    while (digits-- > 0)
+    {
+        remainder *= 10.0;
+        unsigned int toPrint = (unsigned int)(remainder);
+        printUint64(toPrint);
+        remainder -= toPrint;
+    }
+}
+
+void print(double num, int digits = 2)
+{
+    printFloat(num, digits);
+}
+
+void println(void)
+{
+    print("\r\n");
+}
+
+void println(const char* s)
+{
+    print(s);
+    println();
+}
+void println(char c)
+{
+    print(c);
+    println();
+}
+
+void println(unsigned char num, int base)
+{
+    print(num, base);
+    println();
+}
+
+void println(int num, int base)
+{
+    print(num, base);
+    println();
+}
+
+void println(unsigned int num, int base)
+{
+    print(num, base);
+    println();
+}
+
+void println(long num, int base)
+{
+    print(num, base);
+    println();
+}
+
+void println(unsigned long num, int base)
+{
+    print(num, base);
+    println();
+}
+
+void println(unsigned long long num, int base)
+{
+    printUint64(num, base);
+    println();
+}
+
+void println(double num, int digits = 2)
+{
+    print(num, digits);
+    println();
+}
+
+void println(double num)
+{
+    // default: print 10 digits
+    println(num, 10);
+}
+#endif // KNX_NO_PRINT
+
+uint32_t digitalRead(uint32_t dwPin)
+{
+    print("ignoring digitalRead: pin: ");
+    print(dwPin);
+    println(", returning 0");
+    return 0;
+}
+
+void digitalWrite(unsigned long pin, unsigned long value)
+{
+    if (pin == Board_GPIO_LED0)
+    {
+        if (value > 0)
+        {
+            GPIO_write(Board_GPIO_LED0, Board_GPIO_LED_ON);
+        }
+        else
+        {
+            GPIO_write(Board_GPIO_LED0, Board_GPIO_LED_OFF);
+        }
+    }
+    else
+    {
+        print("dummy digitalWrite: pin: ");
+        print(pin);
+        print(", value: ");
+        println(value, HEX);
+    }
+}
+
+void pinMode(unsigned long pin, unsigned long mode)
+{
+    print("ignoring pinMode: pin: ");
+    print(pin);
+    print(", mode: ");
+    println(mode, HEX);
+}
+
+typedef void (*IsrFuncPtr)();
+static IsrFuncPtr gpioCallback;
+static void gpioButtonFxn0(uint_least8_t index)
+{
+    gpioCallback();
+}
+
+void attachInterrupt(uint32_t pin, IsrFuncPtr callback, uint32_t mode)
+{
+    if (pin == Board_GPIO_BUTTON0)
+    {
+        gpioCallback = callback;
+        /* install Button callback */
+        GPIO_setCallback(Board_GPIO_BUTTON0, gpioButtonFxn0);
+
+        /* Enable interrupts */
+        GPIO_enableInt(Board_GPIO_BUTTON0);
+    }
+    else
+    {
+        print("dummy attachInterrupt: pin: ");
+        print(pin);
+        print(", mode: ");
+        println(mode, HEX);
+    }
+}
+
+CC1310Platform::CC1310Platform()
+{
+    // build serialNumber from IEEE MAC Address (MAC is 8 bytes, serialNumber 6 bytes only)
+    *(uint32_t*)(serialNumber + 2) = HWREG(FCFG1_BASE + FCFG1_O_MAC_15_4_0) ^ HWREG(FCFG1_BASE + FCFG1_O_MAC_15_4_1); // make a 6 byte hash from 8 bytes
+}
+
+CC1310Platform::~CC1310Platform()
+{
+}
+
+void CC1310Platform::init()
+{
+    // TI Drivers init
+    // According to SDK docs it is safe to call them AFTER NoRTOS_Start()
+    // If RTOS is used and multiple thread use the same driver, then the init shall be performed before BIOS_Start()
+    GPIO_init();
+    UART_init();
+    NVS_init();
+
+    // Init GPIO
+    setupGPIO();
+
+    // Init UART
+    setupUART();
+
+    // tick Period on this controller 10us so we use our own millisecond clock
+    setupClock();
+
+    // Init flash
+    setupNVS();
+}
+
+uint8_t* CC1310Platform::getEepromBuffer(uint32_t size)
+{
+    if (size > KNX_FLASH_SIZE)
+    {
+        fatalError();
+    }
+
+    NVS_read(nvsHandle, 0, (void*) NVS_buffer, size);
+
+    for (int i = 0; i < size; i++)
+    {
+        if (NVS_buffer[i] != 0)
+        {
+            return NVS_buffer;
+        }
+    }
+
+    memset(NVS_buffer, 0xff, size);
+
+    return NVS_buffer;
+}
+
+void CC1310Platform::commitToEeprom()
+{
+    println("CC1310Platform::commitToEeprom() ...");
+
+    int_fast16_t result = NVS_write(nvsHandle, 0, (void*)NVS_buffer, KNX_FLASH_SIZE, NVS_WRITE_ERASE | NVS_WRITE_POST_VERIFY);
+
+    if (result != NVS_STATUS_SUCCESS)
+    {
+        print("Error writing to NVS, result: ");
+        println(result);
+    }
+    else
+    {
+        println("NVS successfully written");
+    }
+
+    delay(500);
+}
+
+void CC1310Platform::restart()
+{
+    println("System restart in 500ms.");
+    delay(500);
+    SysCtrlSystemReset();
+    // Should neber be reached!
+    fatalError();
+}
+
+void CC1310Platform::fatalError()
+{
+    println("A fatal error occured. Stopped.");
+
+    while (true)
+    {
+        /* Turn on user LED */
+        GPIO_write(Board_GPIO_LED0, Board_GPIO_LED_OFF);
+        GPIO_write(Board_GPIO_LED1, Board_GPIO_LED_ON);
+        delay(500);
+        GPIO_write(Board_GPIO_LED0, Board_GPIO_LED_ON);
+        GPIO_write(Board_GPIO_LED1, Board_GPIO_LED_OFF);
+        delay(500);
+    }
+}
+
+#endif // DeviceFamily_CC13X0

components/knx/src/cc1310_platform.h

@@ -0,0 +1,27 @@
+#pragma once
+
+#ifdef DeviceFamily_CC13X0
+
+#include <ti/drivers/NVS.h>
+#include <ti/drivers/UART.h>
+#include <ti/drivers/dpl/ClockP.h>
+
+#include "knx/platform.h"
+
+class CC1310Platform : public Platform
+{
+    public:
+        CC1310Platform();
+        virtual ~CC1310Platform();
+
+        void init();
+
+        // basic stuff
+        void restart() final;
+        void fatalError() final;
+
+        uint8_t* getEepromBuffer(uint32_t size) final;
+        void commitToEeprom() final;
+};
+
+#endif //DeviceFamily_CC13X0

components/knx/src/esp32_idf_platform.cpp

@@ -0,0 +1,443 @@
+#ifndef ARDUINO
+#ifdef ESP_PLATFORM
+// esp32_idf_platform.cpp
+#include <esp_system.h>
+#include <esp_mac.h>
+#include "esp32_idf_platform.h"
+#include "esp_log.h"
+#include "knx/bits.h"
+#include "nvs.h"
+#include <esp_timer.h>
+
+static const char* KTAG = "KNX_LIB";
+
+Esp32IdfPlatform::Esp32IdfPlatform(uart_port_t uart_num)
+    : _uart_num(uart_num)
+{
+    // Set the memory type to use our NVS-based EEPROM emulation
+    _memoryType = Eeprom;
+}
+
+Esp32IdfPlatform::~Esp32IdfPlatform()
+{
+    if (_sock != -1)
+    {
+        closeMultiCast();
+    }
+    if (_uart_installed)
+    {
+        closeUart();
+    }
+    if (_eeprom_buffer)
+    {
+        free(_eeprom_buffer);
+    }
+    if (_nvs_handle)
+    {
+        nvs_close(_nvs_handle);
+    }
+}
+
+void Esp32IdfPlatform::knxUartPins(int8_t rxPin, int8_t txPin)
+{
+    _rxPin = rxPin;
+    _txPin = txPin;
+}
+
+void Esp32IdfPlatform::knxUartBaudRate(uint32_t baudRate)
+{
+    _baudRate = baudRate;
+    ESP_LOGI(KTAG, "UART baud rate set to %lu", _baudRate);
+}
+
+void Esp32IdfPlatform::setNetif(esp_netif_t* netif)
+{
+    _netif = netif;
+}
+
+void Esp32IdfPlatform::fatalError()
+{
+    ESP_LOGE(KTAG, "FATAL ERROR. System halted.");
+    // Loop forever to halt the system
+    while (1)
+    {
+        vTaskDelay(pdMS_TO_TICKS(1000));
+    }
+}
+
+// ESP specific uart handling with pins
+void Esp32IdfPlatform::setupUart()
+{
+    if (_uart_installed)
+        return;
+    uart_config_t uart_config;
+    memset(&uart_config, 0, sizeof(uart_config));
+    uart_config.baud_rate = _baudRate; // Use configurable baud rate
+    uart_config.data_bits = UART_DATA_8_BITS;
+    uart_config.parity = UART_PARITY_EVEN;
+    uart_config.stop_bits = UART_STOP_BITS_1;
+    uart_config.flow_ctrl = UART_HW_FLOWCTRL_DISABLE;
+    uart_config.source_clk = UART_SCLK_DEFAULT;
+    
+    ESP_ERROR_CHECK(uart_driver_install(_uart_num, 256 * 2, 0, 0, NULL, 0));
+    ESP_ERROR_CHECK(uart_param_config(_uart_num, &uart_config));
+    ESP_ERROR_CHECK(uart_set_pin(_uart_num, _txPin, _rxPin, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE));
+    _uart_installed = true;
+    ESP_LOGI(KTAG, "UART initialized with baud rate %lu", _baudRate);
+}
+
+void Esp32IdfPlatform::closeUart()
+{
+    if (!_uart_installed)
+        return;
+    uart_driver_delete(_uart_num);
+    _uart_installed = false;
+}
+
+int Esp32IdfPlatform::uartAvailable()
+{
+    if (!_uart_installed)
+        return 0;
+    size_t length = 0;
+    ESP_ERROR_CHECK(uart_get_buffered_data_len(_uart_num, &length));
+    return length;
+}
+
+size_t Esp32IdfPlatform::writeUart(const uint8_t data)
+{
+    if (!_uart_installed)
+        return 0;
+    return uart_write_bytes(_uart_num, &data, 1);
+}
+
+size_t Esp32IdfPlatform::writeUart(const uint8_t* buffer, size_t size)
+{
+    if (!_uart_installed)
+        return 0;
+    return uart_write_bytes(_uart_num, buffer, size);
+}
+
+int Esp32IdfPlatform::readUart()
+{
+    if (!_uart_installed)
+        return -1;
+    uint8_t data;
+    if (uart_read_bytes(_uart_num, &data, 1, pdMS_TO_TICKS(20)) > 0)
+    {
+        return data;
+    }
+    return -1;
+}
+
+size_t Esp32IdfPlatform::readBytesUart(uint8_t* buffer, size_t length)
+{
+    if (!_uart_installed)
+        return 0;
+    return uart_read_bytes(_uart_num, buffer, length, pdMS_TO_TICKS(100));
+}
+
+void Esp32IdfPlatform::flushUart()
+{
+    if (!_uart_installed)
+        return;
+    ESP_ERROR_CHECK(uart_flush(_uart_num));
+}
+
+uint32_t Esp32IdfPlatform::currentIpAddress()
+{
+    if (!_netif)
+        return 0;
+    esp_netif_ip_info_t ip_info;
+    esp_netif_get_ip_info(_netif, &ip_info);
+    return ip_info.ip.addr;
+}
+
+uint32_t Esp32IdfPlatform::currentSubnetMask()
+{
+    if (!_netif)
+        return 0;
+    esp_netif_ip_info_t ip_info;
+    esp_netif_get_ip_info(_netif, &ip_info);
+    return ip_info.netmask.addr;
+}
+
+uint32_t Esp32IdfPlatform::currentDefaultGateway()
+{
+    if (!_netif)
+        return 0;
+    esp_netif_ip_info_t ip_info;
+    esp_netif_get_ip_info(_netif, &ip_info);
+    return ip_info.gw.addr;
+}
+
+void Esp32IdfPlatform::macAddress(uint8_t* addr)
+{
+    if (!_netif)
+        return;
+    esp_netif_get_mac(_netif, addr);
+}
+
+uint32_t Esp32IdfPlatform::uniqueSerialNumber()
+{
+    uint8_t mac[6];
+    esp_efuse_mac_get_default(mac);
+    uint64_t chipid = 0;
+    for (int i = 0; i < 6; i++)
+    {
+        chipid |= ((uint64_t)mac[i] << (i * 8));
+    }
+    uint32_t upperId = (chipid >> 32) & 0xFFFFFFFF;
+    uint32_t lowerId = (chipid & 0xFFFFFFFF);
+    return (upperId ^ lowerId);
+}
+
+void Esp32IdfPlatform::restart()
+{
+    ESP_LOGI(KTAG, "Restarting system...");
+    esp_restart();
+}
+
+void Esp32IdfPlatform::setupMultiCast(uint32_t addr, uint16_t port)
+{
+    _multicast_addr = addr;
+    _multicast_port = port;
+
+    _sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_IP);
+    if (_sock < 0)
+    {
+        ESP_LOGE(KTAG, "Failed to create socket. Errno: %d", errno);
+        return;
+    }
+
+    struct sockaddr_in saddr;
+    memset(&saddr, 0, sizeof(saddr));
+    saddr.sin_family = AF_INET;
+    saddr.sin_port = htons(port);
+    saddr.sin_addr.s_addr = htonl(INADDR_ANY);
+    if (bind(_sock, (struct sockaddr*)&saddr, sizeof(struct sockaddr_in)) < 0)
+    {
+        ESP_LOGE(KTAG, "Failed to bind socket. Errno: %d", errno);
+        close(_sock);
+        _sock = -1;
+        return;
+    }
+
+    struct ip_mreq imreq;
+    memset(&imreq, 0, sizeof(imreq));
+    imreq.imr_interface.s_addr = IPADDR_ANY;
+    imreq.imr_multiaddr.s_addr = addr;
+    if (setsockopt(_sock, IPPROTO_IP, IP_ADD_MEMBERSHIP, &imreq, sizeof(struct ip_mreq)) < 0)
+    {
+        ESP_LOGE(KTAG, "Failed to join multicast group. Errno: %d", errno);
+        close(_sock);
+        _sock = -1;
+        return;
+    }
+
+    ESP_LOGI(KTAG, "Successfully joined multicast group on port %d", port);
+}
+
+void Esp32IdfPlatform::closeMultiCast()
+{
+    if (_sock != -1)
+    {
+        close(_sock);
+        _sock = -1;
+    }
+}
+
+bool Esp32IdfPlatform::sendBytesMultiCast(uint8_t* buffer, uint16_t len)
+{
+    if (_sock < 0)
+        return false;
+
+    struct sockaddr_in dest_addr = {};
+    dest_addr.sin_family = AF_INET;
+    dest_addr.sin_port = htons(_multicast_port);
+    dest_addr.sin_addr.s_addr = _multicast_addr;
+
+    int sent_len = sendto(_sock, buffer, len, 0, (struct sockaddr*)&dest_addr, sizeof(dest_addr));
+    if (sent_len < 0)
+    {
+        ESP_LOGE(KTAG, "sendBytesMultiCast failed. Errno: %d", errno);
+        return false;
+    }
+    return sent_len == len;
+}
+
+int Esp32IdfPlatform::readBytesMultiCast(uint8_t* buffer, uint16_t maxLen, uint32_t& src_addr, uint16_t& src_port)
+{
+    if (_sock < 0)
+        return 0;
+
+    socklen_t socklen = sizeof(_remote_addr);
+    int len = recvfrom(_sock, buffer, maxLen, 0, (struct sockaddr*)&_remote_addr, &socklen);
+
+    if (len <= 0)
+    {
+        return 0; // No data or error
+    }
+
+    src_addr = _remote_addr.sin_addr.s_addr;
+    src_port = ntohs(_remote_addr.sin_port);
+
+    return len;
+}
+
+bool Esp32IdfPlatform::sendBytesUniCast(uint32_t addr, uint16_t port, uint8_t* buffer, uint16_t len)
+{
+    if (_sock < 0)
+        return false;
+
+    struct sockaddr_in dest_addr;
+    dest_addr.sin_family = AF_INET;
+
+    if (addr == 0)
+    { // If address is 0, use the address from the last received packet
+        dest_addr.sin_addr.s_addr = _remote_addr.sin_addr.s_addr;
+    }
+    else
+    {
+        dest_addr.sin_addr.s_addr = addr;
+    }
+
+    if (port == 0)
+    { // If port is 0, use the port from the last received packet
+        dest_addr.sin_port = _remote_addr.sin_port;
+    }
+    else
+    {
+        dest_addr.sin_port = htons(port);
+    }
+
+    if (sendto(_sock, buffer, len, 0, (struct sockaddr*)&dest_addr, sizeof(dest_addr)) < 0)
+    {
+        ESP_LOGE(KTAG, "sendBytesUniCast failed. Errno: %d", errno);
+        return false;
+    }
+
+    return true;
+}
+
+uint8_t* Esp32IdfPlatform::getEepromBuffer(uint32_t size)
+{
+    if (_eeprom_buffer && _eeprom_size == size)
+    {
+        return _eeprom_buffer;
+    }
+
+    if (_eeprom_buffer)
+    {
+        free(_eeprom_buffer);
+        _eeprom_buffer = nullptr;
+    }
+
+    _eeprom_size = size;
+    _eeprom_buffer = (uint8_t*)malloc(size);
+    if (!_eeprom_buffer)
+    {
+        ESP_LOGE(KTAG, "Failed to allocate EEPROM buffer");
+        fatalError();
+        return nullptr;
+    }
+
+    esp_err_t err = nvs_flash_init();
+    if (err == ESP_ERR_NVS_NO_FREE_PAGES || err == ESP_ERR_NVS_NEW_VERSION_FOUND)
+    {
+        ESP_ERROR_CHECK(nvs_flash_erase());
+        err = nvs_flash_init();
+    }
+    ESP_ERROR_CHECK(err);
+
+    err = nvs_open(_nvs_namespace, NVS_READWRITE, &_nvs_handle);
+    if (err != ESP_OK)
+    {
+        ESP_LOGE(KTAG, "Error opening NVS handle: %s", esp_err_to_name(err));
+        free(_eeprom_buffer);
+        _eeprom_buffer = nullptr;
+        fatalError();
+        return nullptr;
+    }
+
+    size_t required_size = size;
+    err = nvs_get_blob(_nvs_handle, _nvs_key, _eeprom_buffer, &required_size);
+    if (err != ESP_OK || required_size != size)
+    {
+        if (err == ESP_ERR_NVS_NOT_FOUND)
+        {
+            ESP_LOGI(KTAG, "No previous EEPROM data found in NVS. Initializing fresh buffer.");
+        }
+        else
+        {
+            ESP_LOGW(KTAG, "NVS get blob failed (%s) or size mismatch. Initializing fresh buffer.", esp_err_to_name(err));
+        }
+        memset(_eeprom_buffer, 0xFF, size);
+    }
+    else
+    {
+        ESP_LOGI(KTAG, "Successfully loaded %d bytes from NVS into EEPROM buffer.", required_size);
+    }
+
+    return _eeprom_buffer;
+}
+
+void Esp32IdfPlatform::commitToEeprom()
+{
+    if (!_eeprom_buffer || !_nvs_handle)
+    {
+        ESP_LOGE(KTAG, "EEPROM not initialized, cannot commit.");
+        return;
+    }
+
+    esp_err_t err = nvs_set_blob(_nvs_handle, _nvs_key, _eeprom_buffer, _eeprom_size);
+    if (err != ESP_OK)
+    {
+        ESP_LOGE(KTAG, "Failed to set NVS blob: %s", esp_err_to_name(err));
+        return;
+    }
+
+    err = nvs_commit(_nvs_handle);
+    if (err != ESP_OK)
+    {
+        ESP_LOGE(KTAG, "Failed to commit NVS: %s", esp_err_to_name(err));
+    }
+    else
+    {
+        ESP_LOGI(KTAG, "Committed %" PRIu32 " bytes to NVS.", _eeprom_size);
+    }
+}
+
+uint32_t millis()
+{
+    // esp_timer_get_time() returns microseconds, so we divide by 1000 for milliseconds.
+    // Cast to uint32_t to match the Arduino function signature.
+    return (uint32_t)(esp_timer_get_time() / 1000);
+}
+
+// Internal wrapper function to bridge Arduino-style ISR to ESP-IDF
+static void IRAM_ATTR isr_wrapper(void* arg)
+{
+    IsrFuncPtr fn = (IsrFuncPtr)arg;
+    fn();  // call the original ISR
+}
+
+// Implement attachInterrupt arduino like in ESP IDF
+void attachInterrupt(uint32_t pin, IsrFuncPtr callback, uint32_t mode)
+{
+    gpio_config_t io_conf = {
+        .pin_bit_mask = (1ULL << pin),
+        .mode = GPIO_MODE_INPUT,
+        .pull_up_en = GPIO_PULLUP_ENABLE,
+        .pull_down_en = GPIO_PULLDOWN_DISABLE,
+        .intr_type = (gpio_int_type_t)mode
+    };
+
+    ESP_ERROR_CHECK(gpio_config(&io_conf));
+
+    ESP_ERROR_CHECK(gpio_install_isr_service(0));
+       // Add ISR using the wrapper and pass original function as argument
+    ESP_ERROR_CHECK(gpio_isr_handler_add((gpio_num_t)pin, isr_wrapper, (void*)callback));
+}
+
+#endif // ESP_PLATFORM
+#endif // !ARDUINO

components/knx/src/esp32_idf_platform.h

@@ -0,0 +1,89 @@
+#ifndef ARDUINO
+#ifdef ESP_PLATFORM
+// esp_idf_platform.h
+#pragma once
+
+#include "driver/uart.h"
+#include "esp_netif.h"
+#include "esp_system.h"
+#include "lwip/sockets.h"
+#include "nvs_flash.h"
+#include "knx/platform.h"// Include the provided base class
+
+class Esp32IdfPlatform : public Platform
+{
+  public:
+    Esp32IdfPlatform(uart_port_t uart_num = UART_NUM_1);
+    ~Esp32IdfPlatform();
+
+    // uart
+    void knxUartPins(int8_t rxPin, int8_t txPin);
+    void knxUartBaudRate(uint32_t baudRate); // Add baud rate configuration
+
+    // Call this after WiFi/Ethernet has started and received an IP.
+    void setNetif(esp_netif_t* netif);
+
+    // --- Overridden Virtual Functions ---
+
+    // ip stuff
+    uint32_t currentIpAddress() override;
+    uint32_t currentSubnetMask() override;
+    uint32_t currentDefaultGateway() override;
+    void macAddress(uint8_t* addr) override;
+
+    // unique serial number
+    uint32_t uniqueSerialNumber() override;
+
+    // basic stuff (pure virtual in base)
+    void restart() override;
+    void fatalError() override;
+
+    // multicast
+    void setupMultiCast(uint32_t addr, uint16_t port) override;
+    void closeMultiCast() override;
+    bool sendBytesMultiCast(uint8_t* buffer, uint16_t len) override;
+    int readBytesMultiCast(uint8_t* buffer, uint16_t maxLen, uint32_t& src_addr, uint16_t& src_port) override;
+
+    // unicast
+    bool sendBytesUniCast(uint32_t addr, uint16_t port, uint8_t* buffer, uint16_t len) override;
+
+    // UART
+    void setupUart() override;
+    void closeUart() override;
+    int uartAvailable() override;
+    size_t writeUart(const uint8_t data) override;
+    size_t writeUart(const uint8_t* buffer, size_t size) override;
+    int readUart() override;
+    size_t readBytesUart(uint8_t* buffer, size_t length) override;
+    void flushUart() override;
+
+    // Memory (EEPROM emulation via NVS)
+    // We override these two functions to provide the low-level storage mechanism.
+    // The base Platform class will use them when _memoryType is Eeprom.
+    uint8_t* getEepromBuffer(uint32_t size) override;
+    void commitToEeprom() override;
+
+  private:
+    // Network
+    esp_netif_t* _netif = nullptr;
+    int _sock = -1;
+    struct sockaddr_in _remote_addr;
+    uint32_t _multicast_addr = 0;
+    uint16_t _multicast_port = 0;
+
+    // UART
+    uart_port_t _uart_num;
+    int8_t _rxPin = -1;
+    int8_t _txPin = -1;
+    uint32_t _baudRate = 19200; // Default baud rate, can be changed
+    bool _uart_installed = false;
+
+    // NVS (for EEPROM emulation)
+    nvs_handle_t _nvs_handle;
+    uint8_t* _eeprom_buffer = nullptr;
+    uint32_t _eeprom_size = 0;
+    const char* _nvs_namespace = "eeprom";
+    const char* _nvs_key = "eeprom";
+};
+#endif
+#endif

components/knx/src/esp32_platform.cpp

@@ -0,0 +1,184 @@
+#include "esp32_platform.h"
+
+#ifdef ARDUINO_ARCH_ESP32
+#include <Arduino.h>
+#include <EEPROM.h>
+
+#include "knx/bits.h"
+
+#ifndef KNX_SERIAL
+    #define KNX_SERIAL Serial1
+    #pragma warn "KNX_SERIAL not defined, using Serial1"
+#endif
+ 
+#ifdef KNX_IP_LAN
+    #include "ETH.h"
+    #define KNX_NETIF ETH
+#else // KNX_IP_WIFI
+    #include <WiFi.h>
+    #define KNX_NETIF WiFi
+#endif
+
+Esp32Platform::Esp32Platform()
+#ifndef KNX_NO_DEFAULT_UART
+    : ArduinoPlatform(&KNX_SERIAL)
+#endif
+{
+#ifdef KNX_UART_RX_PIN
+    _rxPin = KNX_UART_RX_PIN;
+#endif
+#ifdef KNX_UART_TX_PIN
+    _txPin = KNX_UART_TX_PIN;
+#endif
+}
+
+Esp32Platform::Esp32Platform(HardwareSerial* s) : ArduinoPlatform(s)
+{
+}
+
+void Esp32Platform::knxUartPins(int8_t rxPin, int8_t txPin)
+{
+    _rxPin = rxPin;
+    _txPin = txPin;
+}
+
+// ESP specific uart handling with pins
+void Esp32Platform::setupUart()
+{
+    _knxSerial->begin(19200, SERIAL_8E1, _rxPin, _txPin);
+
+    while (!_knxSerial)
+        ;
+}
+
+uint32_t Esp32Platform::currentIpAddress()
+{
+    return KNX_NETIF.localIP();
+}
+
+uint32_t Esp32Platform::currentSubnetMask()
+{
+    return KNX_NETIF.subnetMask();
+}
+
+uint32_t Esp32Platform::currentDefaultGateway()
+{
+    return KNX_NETIF.gatewayIP();
+}
+
+void Esp32Platform::macAddress(uint8_t* addr)
+{
+    KNX_NETIF.macAddress(addr);
+}
+
+uint32_t Esp32Platform::uniqueSerialNumber()
+{
+    uint64_t chipid = ESP.getEfuseMac();
+    uint32_t upperId = (chipid >> 32) & 0xFFFFFFFF;
+    uint32_t lowerId = (chipid & 0xFFFFFFFF);
+    return (upperId ^ lowerId);
+}
+
+void Esp32Platform::restart()
+{
+    println("restart");
+    ESP.restart();
+}
+
+void Esp32Platform::setupMultiCast(uint32_t addr, uint16_t port)
+{
+    IPAddress mcastaddr(htonl(addr));
+
+    KNX_DEBUG_SERIAL.printf("setup multicast addr: %s port: %d ip: %s\n", mcastaddr.toString().c_str(), port,
+        KNX_NETIF.localIP().toString().c_str());
+    uint8_t result = _udp.beginMulticast(mcastaddr, port);
+    KNX_DEBUG_SERIAL.printf("multicast setup result %d\n", result);
+}
+
+void Esp32Platform::closeMultiCast()
+{
+    _udp.stop();
+}
+
+bool Esp32Platform::sendBytesMultiCast(uint8_t* buffer, uint16_t len)
+{
+    //printHex("<- ",buffer, len);
+    _udp.beginMulticastPacket();
+    _udp.write(buffer, len);
+    _udp.endPacket();
+    return true;
+}
+
+int Esp32Platform::readBytesMultiCast(uint8_t* buffer, uint16_t maxLen, uint32_t& src_addr, uint16_t& src_port)
+{
+    int len = _udp.parsePacket();
+
+    if (len == 0)
+        return 0;
+
+    if (len > maxLen)
+    {
+        println("Unexpected UDP data packet length - drop packet");
+
+        for (size_t i = 0; i < len; i++)
+            _udp.read();
+
+        return 0;
+    }
+
+    _udp.read(buffer, len);
+    _remoteIP = _udp.remoteIP();
+    _remotePort = _udp.remotePort();
+    src_addr = htonl(_remoteIP);
+    src_port = _remotePort;
+
+    // print("Remote IP: ");
+    // print(_udp.remoteIP().toString().c_str());
+    // printHex("-> ", buffer, len);
+
+    return len;
+}
+
+bool Esp32Platform::sendBytesUniCast(uint32_t addr, uint16_t port, uint8_t* buffer, uint16_t len)
+{
+    IPAddress ucastaddr(htonl(addr));
+
+    if (!addr)
+        ucastaddr = _remoteIP;
+
+    if (!port)
+        port = _remotePort;
+
+    if (_udp.beginPacket(ucastaddr, port) == 1)
+    {
+        _udp.write(buffer, len);
+
+        if (_udp.endPacket() == 0)
+            println("sendBytesUniCast endPacket fail");
+    }
+    else
+        println("sendBytesUniCast beginPacket fail");
+
+    return true;
+}
+
+uint8_t* Esp32Platform::getEepromBuffer(uint32_t size)
+{
+    uint8_t* eepromptr = EEPROM.getDataPtr();
+
+    if (eepromptr == nullptr)
+    {
+        EEPROM.begin(size);
+        eepromptr = EEPROM.getDataPtr();
+    }
+
+    return eepromptr;
+}
+
+void Esp32Platform::commitToEeprom()
+{
+    EEPROM.getDataPtr(); // trigger dirty flag in EEPROM lib to make sure data will be written to flash
+    EEPROM.commit();
+}
+
+#endif

components/knx/src/esp32_platform.h

@@ -0,0 +1,54 @@
+#ifdef ARDUINO_ARCH_ESP32
+#include "arduino_platform.h"
+
+
+
+#include <WiFiUdp.h>
+
+class Esp32Platform : public ArduinoPlatform
+{
+    public:
+        Esp32Platform();
+        Esp32Platform(HardwareSerial* s);
+
+        // uart
+        void knxUartPins(int8_t rxPin, int8_t txPin);
+        void setupUart() override;
+
+        // ip stuff
+        uint32_t currentIpAddress() override;
+        uint32_t currentSubnetMask() override;
+        uint32_t currentDefaultGateway() override;
+        void macAddress(uint8_t* addr) override;
+
+        // unique serial number
+        uint32_t uniqueSerialNumber() override;
+
+        // basic stuff
+        void restart();
+
+        //multicast
+        void setupMultiCast(uint32_t addr, uint16_t port) override;
+        void closeMultiCast() override;
+        bool sendBytesMultiCast(uint8_t* buffer, uint16_t len) override;
+        int readBytesMultiCast(uint8_t* buffer, uint16_t maxLen, uint32_t& src_addr, uint16_t& src_port) override;
+
+        //unicast
+        bool sendBytesUniCast(uint32_t addr, uint16_t port, uint8_t* buffer, uint16_t len) override;
+
+        //memory
+        uint8_t* getEepromBuffer(uint32_t size);
+        void commitToEeprom();
+
+    protected:
+        IPAddress _remoteIP;
+    protected:
+        uint16_t _remotePort;
+
+    private:
+        WiFiUDP _udp;
+        int8_t _rxPin = -1;
+        int8_t _txPin = -1;
+};
+
+#endif

components/knx/src/esp_platform.cpp

@@ -0,0 +1,135 @@
+#include "esp_platform.h"
+
+#ifdef ARDUINO_ARCH_ESP8266
+#include <user_interface.h>
+#include <Arduino.h>
+#include <EEPROM.h>
+
+#include "knx/bits.h"
+
+#ifndef KNX_SERIAL
+    #define KNX_SERIAL Serial
+#endif
+
+EspPlatform::EspPlatform()
+#ifndef KNX_NO_DEFAULT_UART
+    : ArduinoPlatform(&KNX_SERIAL)
+#endif
+{
+}
+
+EspPlatform::EspPlatform( HardwareSerial* s) : ArduinoPlatform(s)
+{
+}
+
+uint32_t EspPlatform::currentIpAddress()
+{
+    return WiFi.localIP();
+}
+
+uint32_t EspPlatform::currentSubnetMask()
+{
+    return WiFi.subnetMask();
+}
+
+uint32_t EspPlatform::currentDefaultGateway()
+{
+    return WiFi.gatewayIP();
+}
+
+void EspPlatform::macAddress(uint8_t* addr)
+{
+    wifi_get_macaddr(STATION_IF, addr);
+}
+
+uint32_t EspPlatform::uniqueSerialNumber()
+{
+    return ESP.getChipId();
+}
+
+void EspPlatform::restart()
+{
+    println("restart");
+    ESP.reset();
+}
+
+void EspPlatform::setupMultiCast(uint32_t addr, uint16_t port)
+{
+    _multicastAddr = htonl(addr);
+    _multicastPort = port;
+    IPAddress mcastaddr(_multicastAddr);
+
+    KNX_DEBUG_SERIAL.printf("setup multicast addr: %s port: %d ip: %s\n", mcastaddr.toString().c_str(), port,
+                            WiFi.localIP().toString().c_str());
+    uint8 result = _udp.beginMulticast(WiFi.localIP(), mcastaddr, port);
+    KNX_DEBUG_SERIAL.printf("multicast setup result %d\n", result);
+}
+
+void EspPlatform::closeMultiCast()
+{
+    _udp.stop();
+}
+
+bool EspPlatform::sendBytesMultiCast(uint8_t* buffer, uint16_t len)
+{
+    //printHex("<- ",buffer, len);
+    _udp.beginPacketMulticast(_multicastAddr, _multicastPort, WiFi.localIP());
+    _udp.write(buffer, len);
+    _udp.endPacket();
+    return true;
+}
+
+int EspPlatform::readBytesMultiCast(uint8_t* buffer, uint16_t maxLen)
+{
+    int len = _udp.parsePacket();
+
+    if (len == 0)
+        return 0;
+
+    if (len > maxLen)
+    {
+        KNX_DEBUG_SERIAL.printf("udp buffer to small. was %d, needed %d\n", maxLen, len);
+        fatalError();
+    }
+
+    _udp.read(buffer, len);
+    //printHex("-> ", buffer, len);
+    return len;
+}
+
+bool EspPlatform::sendBytesUniCast(uint32_t addr, uint16_t port, uint8_t* buffer, uint16_t len)
+{
+    IPAddress ucastaddr(htonl(addr));
+    println("sendBytesUniCast endPacket fail");
+
+    if (_udp.beginPacket(ucastaddr, port) == 1)
+    {
+        _udp.write(buffer, len);
+
+        if (_udp.endPacket() == 0)
+            println("sendBytesUniCast endPacket fail");
+    }
+    else
+        println("sendBytesUniCast beginPacket fail");
+
+    return true;
+}
+
+uint8_t* EspPlatform::getEepromBuffer(uint32_t size)
+{
+    uint8_t* eepromptr = EEPROM.getDataPtr();
+
+    if (eepromptr == nullptr)
+    {
+        EEPROM.begin(size);
+        eepromptr = EEPROM.getDataPtr();
+    }
+
+    return eepromptr;
+}
+
+void EspPlatform::commitToEeprom()
+{
+    EEPROM.commit();
+}
+#endif

components/knx/src/esp_platform.h

@@ -0,0 +1,43 @@
+#ifdef ARDUINO_ARCH_ESP8266
+#include "arduino_platform.h"
+#include <ESP8266WiFi.h>
+#include <WiFiUdp.h>
+
+
+class EspPlatform : public ArduinoPlatform
+{
+    public:
+        EspPlatform();
+        EspPlatform(HardwareSerial* s);
+
+        // ip stuff
+        uint32_t currentIpAddress() override;
+        uint32_t currentSubnetMask() override;
+        uint32_t currentDefaultGateway() override;
+        void macAddress(uint8_t* addr) override;
+
+        // unique serial number
+        uint32_t uniqueSerialNumber() override;
+
+        // basic stuff
+        void restart();
+
+        //multicast
+        void setupMultiCast(uint32_t addr, uint16_t port) override;
+        void closeMultiCast() override;
+        bool sendBytesMultiCast(uint8_t* buffer, uint16_t len) override;
+        int readBytesMultiCast(uint8_t* buffer, uint16_t maxLen) override;
+
+        //unicast
+        bool sendBytesUniCast(uint32_t addr, uint16_t port, uint8_t* buffer, uint16_t len) override;
+
+        //memory
+        uint8_t* getEepromBuffer(uint32_t size);
+        void commitToEeprom();
+    private:
+        WiFiUDP _udp;
+        uint32_t _multicastAddr;
+        uint16_t _multicastPort;
+};
+
+#endif

components/knx/src/knx.h

@@ -0,0 +1,248 @@
+#pragma once
+/** \page Classdiagramm KNX device
+ * This diagramm shows the most important classes of a normal KNX device.
+
+@startuml
+skinparam monochrome true
+skinparam componentStyle uml2
+
+package "knx" {
+class BusAccessUnit [[class_bus_access_unit.html]]
+class DeviceObject [[class_device_object.html]]
+class BauSystemBDevice [[class_bau_system_b.html]]
+BusAccessUnit<|--BauSystemB
+BauSystemB<|--BauSystemBDevice
+class ApplicationProgramObject [[class_application_program_object.html]]
+BauSystemB*--ApplicationProgramObject
+DeviceObject--*BauSystemB
+class AddressTableObject [[class_address_table_object.html]]
+BauSystemBDevice*--AddressTableObject
+class AssociationTableObject [[class_association_table_object.html]]
+BauSystemBDevice*--AssociationTableObject
+class GroupObjectTableObject [[class_group_object_table_object.html]]
+BauSystemBDevice*--GroupObjectTableObject
+class GroupObject [[class_group_object.html]]
+GroupObject<--GroupObjectTableObject
+GroupObjectTableObject<--GroupObject
+class ApplicationLayer [[class_application_layer.html]]
+
+package knx-data-secure
+{
+class SecureApplicationLayer [[class_secure_application_layer.html]]
+class SecurityInterfaceObject [[class_security_interface_object.html]]
+SecureApplicationLayer-->SecurityInterfaceObject
+SecurityInterfaceObject-->SecureApplicationLayer
+BauSystemBDevice*--"SecurityInterfaceObject"
+BauSystemBDevice*--"SecureApplicationLayer"
+}
+BauSystemBDevice*--"ApplicationLayer"
+ApplicationLayer<|--SecureApplicationLayer
+SecureApplicationLayer--*BauSystemBDevice
+class TransportLayer [[class_transport_layer.html]]
+TransportLayer--*BauSystemBDevice
+class NetworkLayerDevice [[class_network_layer.html]]
+NetworkLayerDevice--*BauSystemBDevice
+class NetworkLayerEntity [[class_network_layer_entity.html]]
+NetworkLayerEntity--*NetworkLayerDevice
+class DataLinkLayer [[class_data_link_layer.html]]
+ApplicationLayer-->SecureApplicationLayer
+SecureApplicationLayer-->ApplicationLayer
+ApplicationLayer-->BusAccessUnit
+ApplicationLayer-->TransportLayer
+SecureApplicationLayer-->TransportLayer
+TransportLayer-->ApplicationLayer
+TransportLayer-->SecureApplicationLayer
+TransportLayer-->NetworkLayerDevice
+NetworkLayerDevice-->TransportLayer
+NetworkLayerEntity-->DataLinkLayer
+DataLinkLayer-->NetworkLayerEntity
+TransportLayer-->AddressTableObject
+SecureApplicationLayer-->AddressTableObject
+SecureApplicationLayer-->DeviceObject
+DataLinkLayer-->DeviceObject
+ApplicationLayer-->AssociationTableObject
+class Dpt [[class_dpt.html]]
+GroupObject->Dpt
+
+package knx-ip
+{
+class IpDataLinkLayer [[class_ip_data_link_layer.html]]
+IpDataLinkLayer--|>DataLinkLayer
+class Bau57B0 [[class_bau57_b0.html]]
+Bau57B0--|>BauSystemBDevice
+Bau57B0*--IpDataLinkLayer
+class IpParameterObject [[class_ip_parameter_object.html]]
+IpParameterObject-->DeviceObject
+Bau57B0*--IpParameterObject
+IpDataLinkLayer-->IpParameterObject
+}
+package knx-tp
+{
+class TpUartDataLinkLayer [[class_tp_uart_data_link_layer.html]]
+TpUartDataLinkLayer--|>DataLinkLayer
+class Bau07B0 [[class_bau07_b0.html]]
+Bau07B0*--TpUartDataLinkLayer
+Bau07B0--|>BauSystemBDevice
+}
+package knx-rf
+{
+class RfDataLinkLayer [[class_rf_data_link_layer.html]]
+RfDataLinkLayer--|>DataLinkLayer
+class Bau27B0 [[class_bau27_b0.html]]
+Bau27B0*--"RfDataLinkLayer"
+Bau27B0--|>BauSystemBDevice
+class RfMediumObject [[class_rf_medium_object.html]]
+Bau27B0*--"RfMediumObject"
+class RfPhysicalLayer [[class_rf_physical_layer.html]]
+"RfDataLinkLayer"*--"RfPhysicalLayer"
+}
+package knx-cemi-server
+{
+class CemiServer [[class_cemi_server.html]]
+class CemiServerObject [[class_cemi_server_object.html]]
+class UsbTunnelInterface [[class_usb_tunnel_inerface.html]]
+CemiServer*--"UsbTunnelInterface"
+Bau57B0*--"CemiServer"
+Bau57B0*--"CemiServerObject"
+Bau27B0*--"CemiServer"
+Bau27B0*--"CemiServerObject"
+Bau07B0*--"CemiServer"
+Bau07B0*--"CemiServerObject"
+}
+CemiServer-->DataLinkLayer
+DataLinkLayer-->CemiServer
+}
+
+package platform
+{
+class Platform [[class_platform.html]]
+class ArduinoPlatform [[class_arduino_platform.html]]
+class SamdPlatform [[class_samd_platform.html]]
+Platform<|--ArduinoPlatform
+ArduinoPlatform<|--SamdPlatform
+class EspPlatform [[class_esp_platform.html]]
+ArduinoPlatform<|--EspPlatform
+class Esp32Platform [[class_esp32_platform.html]]
+ArduinoPlatform<|--Esp32Platform
+class Stm32Platform [[class_stm32_platform.html]]
+ArduinoPlatform<|--Stm32Platform
+class LinuxPlatform [[class_linux_platform.html]]
+LinuxPlatform--|>Platform
+class CC1310Platform [[class_cc1310_platform.html]]
+CC1310Platform--|>Platform
+class RP2040ArduinoPlatform [[class_rp2040_arduino_platform.html]]
+RP2040ArduinoPlatform--|>ArduinoPlatform
+}
+
+package frontend
+{
+class KnxFacade [[class_knx_facade.html]]
+BauSystemBDevice<--KnxFacade
+}
+knx-->Platform
+@enduml
+
+* \page Classdiagramm KNX coupler
+ * This diagramm shows the most important classes of a KNX coupler.
+@startuml
+
+skinparam monochrome true
+skinparam componentStyle uml2
+
+package "knx" {
+class BusAccessUnit [[class_bus_access_unit.html]]
+class DeviceObject [[class_device_object.html]]
+class BauSystemBCoupler [[class_bau_system_b.html]]
+BusAccessUnit<|--BauSystemB
+BauSystemB<|--BauSystemBCoupler
+class ApplicationProgramObject [[class_application_program_object.html]]
+BauSystemB*--ApplicationProgramObject
+DeviceObject--*BauSystemB
+class ApplicationLayer [[class_application_layer.html]]
+
+package knx-data-secure
+{
+class SecureApplicationLayer [[class_secure_application_layer.html]]
+class SecurityInterfaceObject [[class_security_interface_object.html]]
+SecureApplicationLayer-->SecurityInterfaceObject
+SecurityInterfaceObject-->SecureApplicationLayer
+BauSystemBCoupler*--"SecurityInterfaceObject"
+BauSystemBCoupler*--"SecureApplicationLayer"
+}
+BauSystemBCoupler*--"ApplicationLayer"
+ApplicationLayer<|--SecureApplicationLayer
+SecureApplicationLayer--*BauSystemBCoupler
+class TransportLayer [[class_transport_layer.html]]
+TransportLayer--*BauSystemBCoupler
+class NetworkLayerEntity [[class_network_layer_entity.html]]
+class NetworkLayerCoupler [[class_network_layer.html]]
+{
+NetworkLayerEntity[] _networkLayerEntities
+}
+NetworkLayerCoupler*--"NetworkLayerEntity"
+NetworkLayerCoupler--*BauSystemBCoupler
+class DataLinkLayer [[class_data_link_layer.html]]
+ApplicationLayer-->SecureApplicationLayer
+SecureApplicationLayer-->ApplicationLayer
+ApplicationLayer-->BusAccessUnit
+ApplicationLayer-->TransportLayer
+SecureApplicationLayer-->TransportLayer
+TransportLayer-->ApplicationLayer
+TransportLayer-->SecureApplicationLayer
+TransportLayer-->NetworkLayerCoupler
+NetworkLayerCoupler-->TransportLayer
+NetworkLayerEntity-->DataLinkLayer
+DataLinkLayer-->NetworkLayerEntity
+SecureApplicationLayer-->DeviceObject
+DataLinkLayer-->DeviceObject
+
+package knx-ip-tp
+{
+class IpDataLinkLayer [[class_ip_data_link_layer.html]]
+IpDataLinkLayer--|>DataLinkLayer
+class TpUartDataLinkLayer [[class_tp_uart_data_link_layer.html]]
+TpUartDataLinkLayer--|>DataLinkLayer
+class Bau091A [[class_bau09_1a.html]]
+Bau091A--|>BauSystemBCoupler
+Bau091A*--IpDataLinkLayer
+Bau091A*--TpUartDataLinkLayer
+class RouterObject [[class_router_object.html]]
+class IpParameterObject [[class_ip_parameter_object.html]]
+IpParameterObject-->DeviceObject
+Bau091A*--"RouterObject"
+Bau091A*--IpParameterObject
+IpDataLinkLayer-->IpParameterObject
+}
+}
+
+package platform
+{
+class Platform [[class_platform.html]]
+class ArduinoPlatform [[class_arduino_platform.html]]
+class SamdPlatform [[class_samd_platform.html]]
+Platform<|--ArduinoPlatform
+ArduinoPlatform<|--SamdPlatform
+class EspPlatform [[class_esp_platform.html]]
+ArduinoPlatform<|--EspPlatform
+class Esp32Platform [[class_esp32_platform.html]]
+ArduinoPlatform<|--Esp32Platform
+class Stm32Platform [[class_stm32_platform.html]]
+ArduinoPlatform<|--Stm32Platform
+class LinuxPlatform [[class_linux_platform.html]]
+LinuxPlatform--|>Platform
+class CC1310Platform [[class_cc1310_platform.html]]
+CC1310Platform--|>Platform
+class RP2040ArduinoPlatform [[class_rp2040_arduino_platform.html]]
+RP2040ArduinoPlatform--|>ArduinoPlatform
+}
+
+package frontend
+{
+class KnxFacade [[class_knx_facade.html]]
+BauSystemBCoupler<--KnxFacade
+}
+knx-->Platform
+@enduml
+
+ */
+#include "knx_facade.h"

components/knx/src/knx/address_table_object.cpp

@@ -0,0 +1,96 @@
+#include <cstring>
+
+#include "address_table_object.h"
+#include "bits.h"
+#include "data_property.h"
+
+using namespace std;
+
+AddressTableObject::AddressTableObject(Memory& memory)
+    : TableObject(memory)
+{
+    Property* properties[] =
+    {
+        new DataProperty(PID_OBJECT_TYPE, false, PDT_UNSIGNED_INT, 1, ReadLv3 | WriteLv0, (uint16_t)OT_ADDR_TABLE)
+    };
+
+    TableObject::initializeProperties(sizeof(properties), properties);
+}
+
+uint16_t AddressTableObject::entryCount()
+{
+    // after programming without GA the module hangs
+    if (loadState() != LS_LOADED || _groupAddresses[0] == 0xFFFF)
+        return 0;
+
+    return ntohs(_groupAddresses[0]);
+}
+
+uint16_t AddressTableObject::getGroupAddress(uint16_t tsap)
+{
+    if (loadState() != LS_LOADED || tsap > entryCount() )
+        return 0;
+
+    return ntohs(_groupAddresses[tsap]);
+}
+
+uint16_t AddressTableObject::getTsap(uint16_t addr)
+{
+    uint16_t size = entryCount();
+#ifdef USE_BINSEARCH
+
+    uint16_t low, high, i;
+    low = 1;
+    high = size;
+
+    while (low <= high)
+    {
+        i = (low + high) / 2;
+        uint16_t ga = ntohs(_groupAddresses[i]);
+
+        if (ga == addr)
+            return i;
+
+        if (addr < ga)
+            high = i - 1;
+        else
+            low = i + 1 ;
+    }
+
+#else
+
+    for (uint16_t i = 1; i <= size; i++)
+        if (ntohs(_groupAddresses[i]) == addr)
+            return i;
+
+#endif
+    return 0;
+}
+
+#pragma region SaveRestore
+
+const uint8_t* AddressTableObject::restore(const uint8_t* buffer)
+{
+    buffer = TableObject::restore(buffer);
+
+    _groupAddresses = (uint16_t*)data();
+
+    return buffer;
+}
+
+#pragma endregion
+
+bool AddressTableObject::contains(uint16_t addr)
+{
+    return (getTsap(addr) > 0);
+}
+
+void AddressTableObject::beforeStateChange(LoadState& newState)
+{
+    TableObject::beforeStateChange(newState);
+
+    if (newState != LS_LOADED)
+        return;
+
+    _groupAddresses = (uint16_t*)data();
+}

components/knx/src/knx/address_table_object.h

@@ -0,0 +1,57 @@
+#pragma once
+
+#include "table_object.h"
+/**
+ * This class represents the group address table. It provides a mapping between transport layer
+ * service access points (TSAP) and group addresses. The TSAP can be imagined as an index to the array
+ * of group addresses.
+ *
+ * See section 4.10 of @cite knx:3/5/1 for further details.
+ * It implements realisation type 7 (see section 4.10.7 of @cite knx:3/5/1).
+ */
+class AddressTableObject : public TableObject
+{
+    public:
+        /**
+         * The constructor.
+         *
+         * @param memory This parameter is only passed to the constructor of TableObject and is not used by this class.
+         */
+        AddressTableObject(Memory& memory);
+        const uint8_t* restore(const uint8_t* buffer) override;
+
+        /**
+         * returns the number of group addresses of the object.
+         */
+        uint16_t entryCount();
+        /**
+         * Get the group address mapped to a TSAP.
+         *
+         * @param tsap The TSAP of which to get the group address for.
+         *
+         * @return the groupAddress if found or zero if no group address was found.
+         */
+        uint16_t getGroupAddress(uint16_t tsap);
+        /**
+         * Get the TSAP mapped to a group address.
+         *
+         * @param groupAddress the group address of which to get the TSAP for.
+         *
+         * @return the TSAP if found or zero if no tsap was found.
+         */
+        uint16_t getTsap(uint16_t groupAddress);
+        /**
+         * Check if the address table contains a group address.
+         *
+         * @param groupAddress the group address to check
+         *
+         * @return true if the address table contains the group address, false otherwise
+         */
+        bool contains(uint16_t groupAddress);
+
+    protected:
+        void beforeStateChange(LoadState& newState) override;
+
+    private:
+        uint16_t* _groupAddresses = 0;
+};

components/knx/src/knx/aes.c

@@ -0,0 +1,606 @@
+/*
+
+This is an implementation of the AES algorithm, specifically ECB, CTR and CBC mode.
+Block size can be chosen in aes.h - available choices are AES128, AES192, AES256.
+
+The implementation is verified against the test vectors in:
+  National Institute of Standards and Technology Special Publication 800-38A 2001 ED
+
+ECB-AES128
+----------
+
+  plain-text:
+    6bc1bee22e409f96e93d7e117393172a
+    ae2d8a571e03ac9c9eb76fac45af8e51
+    30c81c46a35ce411e5fbc1191a0a52ef
+    f69f2445df4f9b17ad2b417be66c3710
+
+  key:
+    2b7e151628aed2a6abf7158809cf4f3c
+
+  resulting cipher
+    3ad77bb40d7a3660a89ecaf32466ef97
+    f5d3d58503b9699de785895a96fdbaaf
+    43b1cd7f598ece23881b00e3ed030688
+    7b0c785e27e8ad3f8223207104725dd4
+
+
+NOTE:   String length must be evenly divisible by 16byte (str_len % 16 == 0)
+        You should pad the end of the string with zeros if this is not the case.
+        For AES192/256 the key size is proportionally larger.
+
+*/
+
+
+/*****************************************************************************/
+/* Includes:                                                                 */
+/*****************************************************************************/
+#include <string.h> // CBC mode, for memset
+#include "aes.h"
+
+/*****************************************************************************/
+/* Defines:                                                                  */
+/*****************************************************************************/
+// The number of columns comprising a state in AES. This is a constant in AES. Value=4
+#define Nb 4
+
+#if defined(AES256) && (AES256 == 1)
+    #define Nk 8
+    #define Nr 14
+#elif defined(AES192) && (AES192 == 1)
+    #define Nk 6
+    #define Nr 12
+#else
+    #define Nk 4        // The number of 32 bit words in a key.
+    #define Nr 10       // The number of rounds in AES Cipher.
+#endif
+
+// jcallan@github points out that declaring Multiply as a function
+// reduces code size considerably with the Keil ARM compiler.
+// See this link for more information: https://github.com/kokke/tiny-AES-C/pull/3
+#ifndef MULTIPLY_AS_A_FUNCTION
+    #define MULTIPLY_AS_A_FUNCTION 0
+#endif
+
+
+
+
+/*****************************************************************************/
+/* Private variables:                                                        */
+/*****************************************************************************/
+// state - array holding the intermediate results during decryption.
+typedef uint8_t state_t[4][4];
+
+
+
+// The lookup-tables are marked const so they can be placed in read-only storage instead of RAM
+// The numbers below can be computed dynamically trading ROM for RAM -
+// This can be useful in (embedded) bootloader applications, where ROM is often limited.
+static const uint8_t sbox[256] =
+{
+    //0     1    2      3     4    5     6     7      8    9     A      B    C     D     E     F
+    0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76,
+    0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0,
+    0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15,
+    0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75,
+    0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84,
+    0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf,
+    0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8,
+    0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2,
+    0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73,
+    0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb,
+    0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79,
+    0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08,
+    0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a,
+    0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e,
+    0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf,
+    0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16
+};
+
+static const uint8_t rsbox[256] =
+{
+    0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38, 0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb,
+    0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87, 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb,
+    0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d, 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e,
+    0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2, 0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25,
+    0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16, 0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92,
+    0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda, 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84,
+    0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a, 0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06,
+    0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02, 0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b,
+    0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea, 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73,
+    0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85, 0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e,
+    0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89, 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b,
+    0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20, 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4,
+    0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31, 0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f,
+    0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d, 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef,
+    0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0, 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61,
+    0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26, 0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d
+};
+
+// The round constant word array, Rcon[i], contains the values given by
+// x to the power (i-1) being powers of x (x is denoted as {02}) in the field GF(2^8)
+static const uint8_t Rcon[11] =
+{
+    0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36
+};
+
+/*
+ * Jordan Goulder points out in PR #12 (https://github.com/kokke/tiny-AES-C/pull/12),
+ * that you can remove most of the elements in the Rcon array, because they are unused.
+ *
+ * From Wikipedia's article on the Rijndael key schedule @ https://en.wikipedia.org/wiki/Rijndael_key_schedule#Rcon
+ *
+ * "Only the first some of these constants are actually used – up to rcon[10] for AES-128 (as 11 round keys are needed),
+ *  up to rcon[8] for AES-192, up to rcon[7] for AES-256. rcon[0] is not used in AES algorithm."
+ */
+
+
+/*****************************************************************************/
+/* Private functions:                                                        */
+/*****************************************************************************/
+/*
+static uint8_t getSBoxValue(uint8_t num)
+{
+  return sbox[num];
+}
+*/
+#define getSBoxValue(num) (sbox[(num)])
+/*
+static uint8_t getSBoxInvert(uint8_t num)
+{
+  return rsbox[num];
+}
+*/
+#define getSBoxInvert(num) (rsbox[(num)])
+
+// This function produces Nb(Nr+1) round keys. The round keys are used in each round to decrypt the states.
+static void KeyExpansion(uint8_t* RoundKey, const uint8_t* Key)
+{
+    unsigned i, j, k;
+    uint8_t tempa[4]; // Used for the column/row operations
+
+    // The first round key is the key itself.
+    for (i = 0; i < Nk; ++i)
+    {
+        RoundKey[(i * 4) + 0] = Key[(i * 4) + 0];
+        RoundKey[(i * 4) + 1] = Key[(i * 4) + 1];
+        RoundKey[(i * 4) + 2] = Key[(i * 4) + 2];
+        RoundKey[(i * 4) + 3] = Key[(i * 4) + 3];
+    }
+
+    // All other round keys are found from the previous round keys.
+    for (i = Nk; i < Nb * (Nr + 1); ++i)
+    {
+        {
+            k = (i - 1) * 4;
+            tempa[0] = RoundKey[k + 0];
+            tempa[1] = RoundKey[k + 1];
+            tempa[2] = RoundKey[k + 2];
+            tempa[3] = RoundKey[k + 3];
+
+        }
+
+        if (i % Nk == 0)
+        {
+            // This function shifts the 4 bytes in a word to the left once.
+            // [a0,a1,a2,a3] becomes [a1,a2,a3,a0]
+
+            // Function RotWord()
+            {
+                const uint8_t u8tmp = tempa[0];
+                tempa[0] = tempa[1];
+                tempa[1] = tempa[2];
+                tempa[2] = tempa[3];
+                tempa[3] = u8tmp;
+            }
+
+            // SubWord() is a function that takes a four-byte input word and
+            // applies the S-box to each of the four bytes to produce an output word.
+
+            // Function Subword()
+            {
+                tempa[0] = getSBoxValue(tempa[0]);
+                tempa[1] = getSBoxValue(tempa[1]);
+                tempa[2] = getSBoxValue(tempa[2]);
+                tempa[3] = getSBoxValue(tempa[3]);
+            }
+
+            tempa[0] = tempa[0] ^ Rcon[i / Nk];
+        }
+
+#if defined(AES256) && (AES256 == 1)
+
+        if (i % Nk == 4)
+        {
+            // Function Subword()
+            {
+                tempa[0] = getSBoxValue(tempa[0]);
+                tempa[1] = getSBoxValue(tempa[1]);
+                tempa[2] = getSBoxValue(tempa[2]);
+                tempa[3] = getSBoxValue(tempa[3]);
+            }
+        }
+
+#endif
+        j = i * 4;
+        k = (i - Nk) * 4;
+        RoundKey[j + 0] = RoundKey[k + 0] ^ tempa[0];
+        RoundKey[j + 1] = RoundKey[k + 1] ^ tempa[1];
+        RoundKey[j + 2] = RoundKey[k + 2] ^ tempa[2];
+        RoundKey[j + 3] = RoundKey[k + 3] ^ tempa[3];
+    }
+}
+
+void AES_init_ctx(struct AES_ctx* ctx, const uint8_t* key)
+{
+    KeyExpansion(ctx->RoundKey, key);
+}
+#if (defined(CBC) && (CBC == 1)) || (defined(CTR) && (CTR == 1))
+void AES_init_ctx_iv(struct AES_ctx* ctx, const uint8_t* key, const uint8_t* iv)
+{
+    KeyExpansion(ctx->RoundKey, key);
+    memcpy (ctx->Iv, iv, AES_BLOCKLEN);
+}
+void AES_ctx_set_iv(struct AES_ctx* ctx, const uint8_t* iv)
+{
+    memcpy (ctx->Iv, iv, AES_BLOCKLEN);
+}
+#endif
+
+// This function adds the round key to state.
+// The round key is added to the state by an XOR function.
+static void AddRoundKey(uint8_t round, state_t* state, const uint8_t* RoundKey)
+{
+    uint8_t i, j;
+
+    for (i = 0; i < 4; ++i)
+    {
+        for (j = 0; j < 4; ++j)
+        {
+            (*state)[i][j] ^= RoundKey[(round * Nb * 4) + (i * Nb) + j];
+        }
+    }
+}
+
+// The SubBytes Function Substitutes the values in the
+// state matrix with values in an S-box.
+static void SubBytes(state_t* state)
+{
+    uint8_t i, j;
+
+    for (i = 0; i < 4; ++i)
+    {
+        for (j = 0; j < 4; ++j)
+        {
+            (*state)[j][i] = getSBoxValue((*state)[j][i]);
+        }
+    }
+}
+
+// The ShiftRows() function shifts the rows in the state to the left.
+// Each row is shifted with different offset.
+// Offset = Row number. So the first row is not shifted.
+static void ShiftRows(state_t* state)
+{
+    uint8_t temp;
+
+    // Rotate first row 1 columns to left
+    temp           = (*state)[0][1];
+    (*state)[0][1] = (*state)[1][1];
+    (*state)[1][1] = (*state)[2][1];
+    (*state)[2][1] = (*state)[3][1];
+    (*state)[3][1] = temp;
+
+    // Rotate second row 2 columns to left
+    temp           = (*state)[0][2];
+    (*state)[0][2] = (*state)[2][2];
+    (*state)[2][2] = temp;
+
+    temp           = (*state)[1][2];
+    (*state)[1][2] = (*state)[3][2];
+    (*state)[3][2] = temp;
+
+    // Rotate third row 3 columns to left
+    temp           = (*state)[0][3];
+    (*state)[0][3] = (*state)[3][3];
+    (*state)[3][3] = (*state)[2][3];
+    (*state)[2][3] = (*state)[1][3];
+    (*state)[1][3] = temp;
+}
+
+static uint8_t xtime(uint8_t x)
+{
+    return ((x << 1) ^ (((x >> 7) & 1) * 0x1b));
+}
+
+// MixColumns function mixes the columns of the state matrix
+static void MixColumns(state_t* state)
+{
+    uint8_t i;
+    uint8_t Tmp, Tm, t;
+
+    for (i = 0; i < 4; ++i)
+    {
+        t   = (*state)[i][0];
+        Tmp = (*state)[i][0] ^ (*state)[i][1] ^ (*state)[i][2] ^ (*state)[i][3] ;
+        Tm  = (*state)[i][0] ^ (*state)[i][1] ;
+        Tm = xtime(Tm);
+        (*state)[i][0] ^= Tm ^ Tmp ;
+        Tm  = (*state)[i][1] ^ (*state)[i][2] ;
+        Tm = xtime(Tm);
+        (*state)[i][1] ^= Tm ^ Tmp ;
+        Tm  = (*state)[i][2] ^ (*state)[i][3] ;
+        Tm = xtime(Tm);
+        (*state)[i][2] ^= Tm ^ Tmp ;
+        Tm  = (*state)[i][3] ^ t ;
+        Tm = xtime(Tm);
+        (*state)[i][3] ^= Tm ^ Tmp ;
+    }
+}
+
+// Multiply is used to multiply numbers in the field GF(2^8)
+// Note: The last call to xtime() is unneeded, but often ends up generating a smaller binary
+//       The compiler seems to be able to vectorize the operation better this way.
+//       See https://github.com/kokke/tiny-AES-c/pull/34
+#if MULTIPLY_AS_A_FUNCTION
+static uint8_t Multiply(uint8_t x, uint8_t y)
+{
+    return (((y & 1) * x) ^
+            ((y >> 1 & 1) * xtime(x)) ^
+            ((y >> 2 & 1) * xtime(xtime(x))) ^
+            ((y >> 3 & 1) * xtime(xtime(xtime(x)))) ^
+            ((y >> 4 & 1) * xtime(xtime(xtime(xtime(x)))))); /* this last call to xtime() can be omitted */
+}
+#else
+#define Multiply(x, y)                                \
+    (  ((y & 1) * x) ^                              \
+       ((y>>1 & 1) * xtime(x)) ^                       \
+       ((y>>2 & 1) * xtime(xtime(x))) ^                \
+       ((y>>3 & 1) * xtime(xtime(xtime(x)))) ^         \
+       ((y>>4 & 1) * xtime(xtime(xtime(xtime(x))))))   \
+
+#endif
+
+#if (defined(CBC) && CBC == 1) || (defined(ECB) && ECB == 1)
+// MixColumns function mixes the columns of the state matrix.
+// The method used to multiply may be difficult to understand for the inexperienced.
+// Please use the references to gain more information.
+static void InvMixColumns(state_t* state)
+{
+    int i;
+    uint8_t a, b, c, d;
+
+    for (i = 0; i < 4; ++i)
+    {
+        a = (*state)[i][0];
+        b = (*state)[i][1];
+        c = (*state)[i][2];
+        d = (*state)[i][3];
+
+        (*state)[i][0] = Multiply(a, 0x0e) ^ Multiply(b, 0x0b) ^ Multiply(c, 0x0d) ^ Multiply(d, 0x09);
+        (*state)[i][1] = Multiply(a, 0x09) ^ Multiply(b, 0x0e) ^ Multiply(c, 0x0b) ^ Multiply(d, 0x0d);
+        (*state)[i][2] = Multiply(a, 0x0d) ^ Multiply(b, 0x09) ^ Multiply(c, 0x0e) ^ Multiply(d, 0x0b);
+        (*state)[i][3] = Multiply(a, 0x0b) ^ Multiply(b, 0x0d) ^ Multiply(c, 0x09) ^ Multiply(d, 0x0e);
+    }
+}
+
+
+// The SubBytes Function Substitutes the values in the
+// state matrix with values in an S-box.
+static void InvSubBytes(state_t* state)
+{
+    uint8_t i, j;
+
+    for (i = 0; i < 4; ++i)
+    {
+        for (j = 0; j < 4; ++j)
+        {
+            (*state)[j][i] = getSBoxInvert((*state)[j][i]);
+        }
+    }
+}
+
+static void InvShiftRows(state_t* state)
+{
+    uint8_t temp;
+
+    // Rotate first row 1 columns to right
+    temp = (*state)[3][1];
+    (*state)[3][1] = (*state)[2][1];
+    (*state)[2][1] = (*state)[1][1];
+    (*state)[1][1] = (*state)[0][1];
+    (*state)[0][1] = temp;
+
+    // Rotate second row 2 columns to right
+    temp = (*state)[0][2];
+    (*state)[0][2] = (*state)[2][2];
+    (*state)[2][2] = temp;
+
+    temp = (*state)[1][2];
+    (*state)[1][2] = (*state)[3][2];
+    (*state)[3][2] = temp;
+
+    // Rotate third row 3 columns to right
+    temp = (*state)[0][3];
+    (*state)[0][3] = (*state)[1][3];
+    (*state)[1][3] = (*state)[2][3];
+    (*state)[2][3] = (*state)[3][3];
+    (*state)[3][3] = temp;
+}
+#endif // #if (defined(CBC) && CBC == 1) || (defined(ECB) && ECB == 1)
+
+// Cipher is the main function that encrypts the PlainText.
+static void Cipher(state_t* state, const uint8_t* RoundKey)
+{
+    uint8_t round = 0;
+
+    // Add the First round key to the state before starting the rounds.
+    AddRoundKey(0, state, RoundKey);
+
+    // There will be Nr rounds.
+    // The first Nr-1 rounds are identical.
+    // These Nr rounds are executed in the loop below.
+    // Last one without MixColumns()
+    for (round = 1; ; ++round)
+    {
+        SubBytes(state);
+        ShiftRows(state);
+
+        if (round == Nr)
+        {
+            break;
+        }
+
+        MixColumns(state);
+        AddRoundKey(round, state, RoundKey);
+    }
+
+    // Add round key to last round
+    AddRoundKey(Nr, state, RoundKey);
+}
+
+#if (defined(CBC) && CBC == 1) || (defined(ECB) && ECB == 1)
+static void InvCipher(state_t* state, const uint8_t* RoundKey)
+{
+    uint8_t round = 0;
+
+    // Add the First round key to the state before starting the rounds.
+    AddRoundKey(Nr, state, RoundKey);
+
+    // There will be Nr rounds.
+    // The first Nr-1 rounds are identical.
+    // These Nr rounds are executed in the loop below.
+    // Last one without InvMixColumn()
+    for (round = (Nr - 1); ; --round)
+    {
+        InvShiftRows(state);
+        InvSubBytes(state);
+        AddRoundKey(round, state, RoundKey);
+
+        if (round == 0)
+        {
+            break;
+        }
+
+        InvMixColumns(state);
+    }
+
+}
+#endif // #if (defined(CBC) && CBC == 1) || (defined(ECB) && ECB == 1)
+
+/*****************************************************************************/
+/* Public functions:                                                         */
+/*****************************************************************************/
+#if defined(ECB) && (ECB == 1)
+
+
+void AES_ECB_encrypt(const struct AES_ctx* ctx, uint8_t* buf)
+{
+    // The next function call encrypts the PlainText with the Key using AES algorithm.
+    Cipher((state_t*)buf, ctx->RoundKey);
+}
+
+void AES_ECB_decrypt(const struct AES_ctx* ctx, uint8_t* buf)
+{
+    // The next function call decrypts the PlainText with the Key using AES algorithm.
+    InvCipher((state_t*)buf, ctx->RoundKey);
+}
+
+
+#endif // #if defined(ECB) && (ECB == 1)
+
+
+
+
+
+#if defined(CBC) && (CBC == 1)
+
+
+static void XorWithIv(uint8_t* buf, const uint8_t* Iv)
+{
+    uint8_t i;
+
+    for (i = 0; i < AES_BLOCKLEN; ++i) // The block in AES is always 128bit no matter the key size
+    {
+        buf[i] ^= Iv[i];
+    }
+}
+
+void AES_CBC_encrypt_buffer(struct AES_ctx* ctx, uint8_t* buf, uint32_t length)
+{
+    uintptr_t i;
+    uint8_t* Iv = ctx->Iv;
+
+    for (i = 0; i < length; i += AES_BLOCKLEN)
+    {
+        XorWithIv(buf, Iv);
+        Cipher((state_t*)buf, ctx->RoundKey);
+        Iv = buf;
+        buf += AES_BLOCKLEN;
+    }
+
+    /* store Iv in ctx for next call */
+    memcpy(ctx->Iv, Iv, AES_BLOCKLEN);
+}
+
+void AES_CBC_decrypt_buffer(struct AES_ctx* ctx, uint8_t* buf,  uint32_t length)
+{
+    uintptr_t i;
+    uint8_t storeNextIv[AES_BLOCKLEN];
+
+    for (i = 0; i < length; i += AES_BLOCKLEN)
+    {
+        memcpy(storeNextIv, buf, AES_BLOCKLEN);
+        InvCipher((state_t*)buf, ctx->RoundKey);
+        XorWithIv(buf, ctx->Iv);
+        memcpy(ctx->Iv, storeNextIv, AES_BLOCKLEN);
+        buf += AES_BLOCKLEN;
+    }
+
+}
+
+#endif // #if defined(CBC) && (CBC == 1)
+
+
+
+#if defined(CTR) && (CTR == 1)
+
+/* Symmetrical operation: same function for encrypting as for decrypting. Note any IV/nonce should never be reused with the same key */
+void AES_CTR_xcrypt_buffer(struct AES_ctx* ctx, uint8_t* buf, uint32_t length)
+{
+    uint8_t buffer[AES_BLOCKLEN];
+
+    unsigned i;
+    int bi;
+
+    for (i = 0, bi = AES_BLOCKLEN; i < length; ++i, ++bi)
+    {
+        if (bi == AES_BLOCKLEN) /* we need to regen xor compliment in buffer */
+        {
+
+            memcpy(buffer, ctx->Iv, AES_BLOCKLEN);
+            Cipher((state_t*)buffer, ctx->RoundKey);
+
+            /* Increment Iv and handle overflow */
+            for (bi = (AES_BLOCKLEN - 1); bi >= 0; --bi)
+            {
+                /* inc will overflow */
+                if (ctx->Iv[bi] == 255)
+                {
+                    ctx->Iv[bi] = 0;
+                    continue;
+                }
+
+                ctx->Iv[bi] += 1;
+                break;
+            }
+
+            bi = 0;
+        }
+
+        buf[i] = (buf[i] ^ buffer[bi]);
+    }
+}
+
+#endif // #if defined(CTR) && (CTR == 1)
+

components/knx/src/knx/aes.h

@@ -0,0 +1,90 @@
+#ifndef _AES_H_
+#define _AES_H_
+
+#include <stdint.h>
+
+// #define the macros below to 1/0 to enable/disable the mode of operation.
+//
+// CBC enables AES encryption in CBC-mode of operation.
+// CTR enables encryption in counter-mode.
+// ECB enables the basic ECB 16-byte block algorithm. All can be enabled simultaneously.
+
+// The #ifndef-guard allows it to be configured before #include'ing or at compile time.
+#ifndef CBC
+    #define CBC 1
+#endif
+
+#ifndef ECB
+    #define ECB 1
+#endif
+
+#ifndef CTR
+    #define CTR 1
+#endif
+
+
+#define AES128 1
+//#define AES192 1
+//#define AES256 1
+
+#define AES_BLOCKLEN 16 // Block length in bytes - AES is 128b block only
+
+#if defined(AES256) && (AES256 == 1)
+    #define AES_KEYLEN 32
+    #define AES_keyExpSize 240
+#elif defined(AES192) && (AES192 == 1)
+    #define AES_KEYLEN 24
+    #define AES_keyExpSize 208
+#else
+    #define AES_KEYLEN 16   // Key length in bytes
+    #define AES_keyExpSize 176
+#endif
+
+struct AES_ctx
+{
+    uint8_t RoundKey[AES_keyExpSize];
+#if (defined(CBC) && (CBC == 1)) || (defined(CTR) && (CTR == 1))
+    uint8_t Iv[AES_BLOCKLEN];
+#endif
+};
+
+void AES_init_ctx(struct AES_ctx* ctx, const uint8_t* key);
+#if (defined(CBC) && (CBC == 1)) || (defined(CTR) && (CTR == 1))
+    void AES_init_ctx_iv(struct AES_ctx* ctx, const uint8_t* key, const uint8_t* iv);
+    void AES_ctx_set_iv(struct AES_ctx* ctx, const uint8_t* iv);
+#endif
+
+#if defined(ECB) && (ECB == 1)
+    // buffer size is exactly AES_BLOCKLEN bytes;
+    // you need only AES_init_ctx as IV is not used in ECB
+    // NB: ECB is considered insecure for most uses
+    void AES_ECB_encrypt(const struct AES_ctx* ctx, uint8_t* buf);
+    void AES_ECB_decrypt(const struct AES_ctx* ctx, uint8_t* buf);
+
+#endif // #if defined(ECB) && (ECB == !)
+
+
+#if defined(CBC) && (CBC == 1)
+    // buffer size MUST be mutile of AES_BLOCKLEN;
+    // Suggest https://en.wikipedia.org/wiki/Padding_(cryptography)#PKCS7 for padding scheme
+    // NOTES: you need to set IV in ctx via AES_init_ctx_iv() or AES_ctx_set_iv()
+    //        no IV should ever be reused with the same key
+    void AES_CBC_encrypt_buffer(struct AES_ctx* ctx, uint8_t* buf, uint32_t length);
+    void AES_CBC_decrypt_buffer(struct AES_ctx* ctx, uint8_t* buf, uint32_t length);
+
+#endif // #if defined(CBC) && (CBC == 1)
+
+
+#if defined(CTR) && (CTR == 1)
+
+    // Same function for encrypting as for decrypting.
+    // IV is incremented for every block, and used after encryption as XOR-compliment for output
+    // Suggesting https://en.wikipedia.org/wiki/Padding_(cryptography)#PKCS7 for padding scheme
+    // NOTES: you need to set IV in ctx with AES_init_ctx_iv() or AES_ctx_set_iv()
+    //        no IV should ever be reused with the same key
+    void AES_CTR_xcrypt_buffer(struct AES_ctx* ctx, uint8_t* buf, uint32_t length);
+
+#endif // #if defined(CTR) && (CTR == 1)
+
+
+#endif // _AES_H_

components/knx/src/knx/aes.hpp

@@ -0,0 +1,12 @@
+#ifndef _AES_HPP_
+#define _AES_HPP_
+
+#ifndef __cplusplus
+    #error Do not include the hpp header in a c project!
+#endif //__cplusplus
+
+extern "C" {
+#include "aes.h"
+}
+
+#endif //_AES_HPP_

components/knx/src/knx/apdu.cpp

@@ -0,0 +1,59 @@
+#include "apdu.h"
+#include "cemi_frame.h"
+#include "bits.h"
+
+APDU::APDU(uint8_t* data, CemiFrame& frame): _data(data), _frame(frame)
+{
+}
+
+ApduType APDU::type()
+{
+    uint16_t apci;
+    apci = getWord(_data);
+    popWord(apci, _data);
+    apci &= 0x3ff;
+
+    if ((apci >> 6) < 11 && (apci >> 6) != 7) //short apci
+        apci &= 0x3c0;
+
+    return (ApduType)apci;
+}
+
+void APDU::type(ApduType atype)
+{
+    // ApduType is in big endian so convert to host first, pushWord converts back
+    pushWord((uint16_t)atype, _data);
+}
+
+uint8_t* APDU::data()
+{
+    return _data + 1;
+}
+
+CemiFrame& APDU::frame()
+{
+    return _frame;
+}
+
+uint8_t APDU::length() const
+{
+    return _frame.npdu().octetCount();
+}
+
+void APDU::printPDU()
+{
+    print("APDU: ");
+    print(type(), HEX);
+    print("  ");
+    print(_data[0] & 0x3, HEX);
+
+    for (uint8_t i = 1; i < length() + 1; ++i)
+    {
+        if (i)
+            print(" ");
+
+        print(_data[i], HEX);
+    }
+
+    println();
+}

components/knx/src/knx/apdu.h

@@ -0,0 +1,53 @@
+#pragma once
+
+#include <stdint.h>
+#include "knx_types.h"
+
+class CemiFrame;
+
+/**
+ * This class represents an Application Protocol Data Unit. It is part of a CemiFrame.
+ */
+class APDU
+{
+        friend class CemiFrame;
+
+    public:
+        /**
+         * Get the type of the APDU.
+         */
+        ApduType type();
+        /**
+         * Set the type of the APDU.
+         */
+        void type(ApduType atype);
+        /**
+         * Get a pointer to the data.
+         */
+        uint8_t* data();
+        /**
+         * Get the CemiFrame this APDU is part of.
+         */
+        CemiFrame& frame();
+        /**
+         * Get the length of the APDU. (This is actually the octet count of the NPDU.)
+         */
+        uint8_t length() const;
+        /**
+         * Print the contents of the APDU to console.
+         */
+        void printPDU();
+
+    protected:
+        /**
+         * The constructor.
+         * @param data The data of the APDU. Encoding depends on the ::ApduType. The class doesn't
+         *             take possession of this pointer.
+         * @param frame The CemiFrame this APDU is part of.
+         */
+        APDU(uint8_t* data, CemiFrame& frame);
+
+    private:
+        uint8_t* _data = 0;
+        CemiFrame& _frame;
+};

components/knx/src/knx/application_layer.h

@@ -0,0 +1,228 @@
+#pragma once
+
+#include <stdint.h>
+#include "knx_types.h"
+#include "apdu.h"
+
+class AssociationTableObject;
+class BusAccessUnit;
+class TransportLayer;
+/**
+ * This is an implementation of the application layer as specified in @cite knx:3/5/1.
+ * It provides methods for the BusAccessUnit to do different things and translates this
+ * call to an APDU and calls the correct method of the TransportLayer.
+ * It also takes calls from TransportLayer, decodes the submitted APDU and calls the corresponding
+ * methods of the BusAccessUnit class.
+ */
+class ApplicationLayer
+{
+    public:
+        /**
+         * The constructor.
+         * @param assocTable The AssociationTable is used to translate between asap (i.e. group objects) and group addresses.
+         * @param bau methods are called here depending of the content of the APDU
+         */
+        ApplicationLayer(BusAccessUnit& bau);
+        /**
+         * Assigns the TransportLayer to which encoded APDU are submitted to.
+         */
+        void transportLayer(TransportLayer& layer);
+
+        void associationTableObject(AssociationTableObject& assocTable);
+
+        // from transport layer
+        // Note: without data secure feature, the application layer is just used with SecurityControl.dataSecurity = None
+        // hooks that can be implemented by derived class (e.g. SecureApplicationLayer)
+
+        #pragma region Transport - Layer - Callbacks
+        /**
+         * Somebody send us an APDU via multicast communication. See 3.2 of @cite knx:3/3/4.
+         * See also ApplicationLayer::dataGroupConfirm and TransportLayer::dataGroupRequest.
+         * This method is called by the TransportLayer.
+         *
+         * @param tsap used the find the correct GroupObject with the help of the AssociationTableObject.
+         *        See 3.1.1 of @cite knx:3/3/7
+         *
+         * @param apdu The submitted APDU.
+         *
+         * @param priority The ::Priority of the received request.
+         *
+         * @param hopType Should routing be endless or should the NetworkLayer::hopCount be used? See also ::HopCountType.
+         */
+        virtual void dataGroupIndication(HopCountType hopType, Priority priority, uint16_t tsap, APDU& apdu);
+        /**
+         * Report the status of an APDU that we sent via multicast communication back to us. See 3.2 of @cite knx:3/3/4.
+         * See also ApplicationLayer::dataGroupConfirm and TransportLayer::dataGroupRequest. This method is called by
+         * the TransportLayer.
+         *
+         * @param tsap used the find the correct GroupObject with the help of the AssociationTableObject.
+         *        See 3.1.1 of @cite knx:3/3/7
+         *
+         * @param apdu The submitted APDU.
+         *
+         * @param priority The ::Priority of the received request.
+         *
+         * @param hopType Should routing be endless or should the NetworkLayer::hopCount be used? See also ::HopCountType.
+         *
+         * @param status Was the request successful?
+         *
+         * @param ack Did we want a DataLinkLayer acknowledgement? See ::AckType.
+         */
+        virtual void dataGroupConfirm(AckType ack, HopCountType hopType, Priority priority, uint16_t tsap, APDU& apdu, bool status);
+        virtual void dataBroadcastIndication(HopCountType hopType, Priority priority, uint16_t source, APDU& apdu);
+        virtual void dataBroadcastConfirm(AckType ack, HopCountType hopType, Priority priority, APDU& apdu, bool status);
+        virtual void dataSystemBroadcastIndication(HopCountType hopType, Priority priority, uint16_t source, APDU& apdu);
+        virtual void dataSystemBroadcastConfirm(HopCountType hopType, Priority priority, APDU& apdu, bool status);
+        virtual void dataIndividualIndication(HopCountType hopType, Priority priority, uint16_t source, APDU& apdu);
+        virtual void dataIndividualConfirm(AckType ack, HopCountType hopType, Priority priority, uint16_t tsap, APDU& apdu, bool status);
+        virtual void dataConnectedIndication(Priority priority, uint16_t tsap, APDU& apdu);
+        virtual void dataConnectedConfirm(uint16_t tsap);
+        void connectIndication(uint16_t tsap);
+        void connectConfirm(uint16_t destination, uint16_t tsap, bool status);
+        void disconnectIndication(uint16_t tsap);
+        void disconnectConfirm(Priority priority, uint16_t tsap, bool status);
+        #pragma endregion
+
+        #pragma region from bau
+        void groupValueReadRequest(AckType ack, uint16_t asap, Priority priority, HopCountType hopType, const SecurityControl& secCtrl);
+        void groupValueReadResponse(AckType ack, uint16_t asap, Priority priority, HopCountType hopType, const SecurityControl& secCtrl, uint8_t* data, uint8_t dataLength);
+        void groupValueWriteRequest(AckType ack, uint16_t asap, Priority priority, HopCountType hopType, const SecurityControl& secCtrl, uint8_t* data, uint8_t dataLength);
+        void individualAddressWriteRequest(AckType ack, HopCountType hopType, const SecurityControl& secCtrl, uint16_t newaddress);
+        void individualAddressReadRequest(AckType ack, HopCountType hopType, const SecurityControl& secCtrl);
+        void individualAddressReadResponse(AckType ack, HopCountType hopType, const SecurityControl& secCtrl);
+        void individualAddressSerialNumberReadRequest(AckType ack, HopCountType hopType, const SecurityControl& secCtrl, uint8_t* serialNumber);
+        void individualAddressSerialNumberReadResponse(AckType ack, HopCountType hopType, const SecurityControl& secCtrl, uint8_t* serialNumber,
+                uint16_t domainAddress);
+        void individualAddressSerialNumberWriteRequest(AckType ack, HopCountType hopType, const SecurityControl& secCtrl, uint8_t* serialNumber,
+                uint16_t newaddress);
+        void deviceDescriptorReadRequest(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl,
+                                         uint8_t descriptorType);
+        void deviceDescriptorReadResponse(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl,
+                                          uint8_t descriptorType, uint8_t* deviceDescriptor);
+        void connectRequest(uint16_t destination, Priority priority);
+        void disconnectRequest(Priority priority);
+        bool isConnected();
+        void restartRequest(AckType ack, Priority priority, HopCountType hopType, const SecurityControl& secCtrl);
+        void restartResponse(AckType ack, Priority priority, HopCountType hopType, const SecurityControl& secCtrl, uint8_t errorCode, uint16_t processTime);
+        void propertyValueReadRequest(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl,
+                                      uint8_t objectIndex, uint8_t propertyId, uint8_t numberOfElements, uint16_t startIndex);
+        void propertyValueReadResponse(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t objectIndex,
+                                       uint8_t propertyId, uint8_t numberOfElements, uint16_t startIndex, uint8_t* data, uint8_t length);
+        void propertyValueExtReadResponse(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl,
+                                          uint16_t objectType, uint8_t objectInstance, uint8_t propertyId, uint8_t numberOfElements, uint16_t startIndex, uint8_t* data, uint8_t length);
+        void propertyValueExtWriteConResponse(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl,
+                                              uint16_t objectType, uint8_t objectInstance, uint8_t propertyId, uint8_t numberOfElements, uint16_t startIndex, uint8_t returnCode);
+        void propertyValueWriteRequest(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t objectIndex,
+                                       uint8_t propertyId, uint8_t numberOfElements, uint16_t startIndex, uint8_t* data, uint8_t length);
+        void adcReadResponse(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl,
+                             uint8_t channelNr, uint8_t readCount, int16_t value);
+        void functionPropertyStateResponse(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl,
+                                           uint8_t objectIndex, uint8_t propertyId, uint8_t* resultData, uint8_t resultLength);
+        void functionPropertyExtStateResponse(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl,
+                                              uint16_t objectType, uint8_t objectInstance, uint16_t propertyId, uint8_t* resultData, uint8_t resultLength);
+        void propertyDescriptionReadRequest(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl,
+                                            uint8_t objectIndex, uint8_t propertyId, uint8_t propertyIndex);
+        void propertyDescriptionReadResponse(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl,
+                                             uint8_t objectIndex, uint8_t propertyId, uint8_t propertyIndex, bool writeEnable, uint8_t type,
+                                             uint16_t maxNumberOfElements, uint8_t access);
+        void propertyExtDescriptionReadResponse(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl,
+                                                uint16_t objectType, uint16_t objectInstance, uint16_t propertyId, uint16_t propertyIndex, uint8_t descriptionType, bool writeEnable, uint8_t type,
+                                                uint16_t maxNumberOfElements, uint8_t access);
+        void memoryReadRequest(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
+                               uint16_t memoryAddress);
+        void memoryReadResponse(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
+                                uint16_t memoryAddress, uint8_t* data);
+        void memoryRouterReadResponse(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
+                                      uint16_t memoryAddress, uint8_t* data);
+        void memoryRoutingTableReadResponse(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
+                                            uint16_t memoryAddress, uint8_t* data);
+        void memoryExtReadResponse(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, ReturnCodes code, uint8_t number,
+                                   uint32_t memoryAddress, uint8_t* data);
+        void memoryExtWriteResponse(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, ReturnCodes code, uint8_t number,
+                                    uint32_t memoryAddress, uint8_t* memoryData);
+        void memoryWriteRequest(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
+                                uint16_t memoryAddress, uint8_t* data);
+        void userMemoryReadRequest(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
+                                   uint32_t memoryAddress);
+        void userMemoryReadResponse(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
+                                    uint32_t memoryAddress, uint8_t* memoryData);
+        void userMemoryWriteRequest(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
+                                    uint32_t memoryAddress, uint8_t* memoryData);
+        void userManufacturerInfoReadRequest(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl);
+        void userManufacturerInfoReadResponse(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl,
+                                              uint8_t* info);
+        void authorizeRequest(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint32_t key);
+        void authorizeResponse(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t level);
+        void keyWriteRequest(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t level, uint32_t key);
+        void keyWriteResponse(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t level);
+
+        void systemNetworkParameterReadResponse(Priority priority, HopCountType hopType, const SecurityControl& secCtrl, uint16_t objectType,
+                                                uint16_t propertyId, uint8_t* testInfo, uint16_t testInfoLength,
+                                                uint8_t* testResult, uint16_t testResultLength);
+        void domainAddressSerialNumberReadResponse(Priority priority, HopCountType hopType, const SecurityControl& secCtrl, const uint8_t* rfDoA,
+                const uint8_t* knxSerialNumber);
+        void IndividualAddressSerialNumberReadResponse(Priority priority, HopCountType hopType, const SecurityControl& secCtrl, const uint8_t* domainAddress,
+                const uint8_t* knxSerialNumber);
+        #pragma endregion
+
+    protected:
+        #pragma region hooks
+        void dataGroupIndication(HopCountType hopType, Priority priority, uint16_t tsap, APDU& apdu, const SecurityControl& secCtrl);
+        void dataGroupConfirm(AckType ack, HopCountType hopType, Priority priority, uint16_t tsap,
+                              APDU& apdu, const SecurityControl& secCtrl, bool status);
+        void dataBroadcastIndication(HopCountType hopType, Priority priority, uint16_t source, APDU& apdu, const SecurityControl& secCtrl);
+        void dataBroadcastConfirm(AckType ack, HopCountType hopType, Priority priority, APDU& apdu, const SecurityControl& secCtrl, bool status);
+        void dataSystemBroadcastIndication(HopCountType hopType, Priority priority, uint16_t source, APDU& apdu, const SecurityControl& secCtrl);
+        void dataSystemBroadcastConfirm(HopCountType hopType, Priority priority, APDU& apdu, const SecurityControl& secCtrl, bool status);
+        void dataIndividualIndication(HopCountType hopType, Priority priority, uint16_t source, APDU& apdu, const SecurityControl& secCtrl);
+        void dataIndividualConfirm(AckType ack, HopCountType hopType, Priority priority, uint16_t tsap, APDU& apdu, const SecurityControl& secCtrl, bool status);
+        void dataConnectedIndication(Priority priority, uint16_t tsap, APDU& apdu, const SecurityControl& secCtrl);
+        void dataConnectedConfirm(uint16_t tsap, const SecurityControl& secCtrl);
+        #pragma endregion
+
+        // to transport layer
+        virtual void dataGroupRequest(AckType ack, HopCountType hopType, Priority priority, uint16_t tsap, APDU& apdu, const SecurityControl& secCtrl);
+        virtual void dataBroadcastRequest(AckType ack, HopCountType hopType, Priority priority, APDU& apdu, const SecurityControl& secCtrl);
+        virtual void dataSystemBroadcastRequest(AckType ack, HopCountType hopType, Priority priority, APDU& apdu, const SecurityControl& secCtrl);
+        virtual void dataIndividualRequest(AckType ack, HopCountType hopType, Priority priority, uint16_t destination, APDU& apdu, const SecurityControl& secCtrl);
+        virtual void dataConnectedRequest(uint16_t tsap, Priority priority, APDU& apdu, const SecurityControl& secCtrl); // apdu must be valid until it was confirmed
+
+        uint16_t getConnectedTsasp()
+        {
+            return _connectedTsap;
+        }
+
+        // Protected: we need to access it in derived class SecureApplicationLayer
+        TransportLayer* _transportLayer = 0;
+
+        static const SecurityControl noSecurity;
+
+    private:
+        void propertyDataSend(ApduType type, AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl,
+                              uint8_t objectIndex, uint8_t propertyId, uint8_t numberOfElements, uint16_t startIndex, uint8_t* data,
+                              uint8_t length);
+        void propertyExtDataSend(ApduType type, AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl,
+                                 uint16_t objectType, uint8_t objectInstance, uint8_t propertyId, uint8_t numberOfElements, uint16_t startIndex, uint8_t* data, uint8_t length);
+        void memorySend(ApduType type, AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
+                        uint16_t memoryAddress, uint8_t* memoryData);
+        // Added EC
+        void memoryRouterSend(ApduType type, AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
+                              uint16_t memoryAddress, uint8_t* memoryData);
+        void memoryRoutingTableSend(ApduType type, AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
+                                    uint16_t memoryAddress, uint8_t* memoryData);
+        //
+        void userMemorySend(ApduType type, AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl,
+                            uint8_t number, uint32_t memoryAddress, uint8_t* memoryData);
+        void groupValueSend(ApduType type, AckType ack, uint16_t asap, Priority priority, HopCountType hopType, const SecurityControl& secCtrl, uint8_t* data, uint8_t& dataLength);
+        void individualIndication(HopCountType hopType, Priority priority, uint16_t tsap, APDU& apdu, const SecurityControl& secCtrl);
+        void individualConfirm(AckType ack, HopCountType hopType, Priority priority, uint16_t tsap, APDU& apdu, const SecurityControl& secCtrl, bool status);
+        void individualSend(AckType ack, HopCountType hopType, Priority priority, uint16_t asap, APDU& apdu, const SecurityControl& secCtrl);
+
+        uint16_t _savedAsapReadRequest = 0;
+        uint16_t _savedAsapWriteRequest = 0;
+        uint16_t _savedAsapResponse = 0;
+        AssociationTableObject* _assocTable = nullptr;
+        BusAccessUnit& _bau;
+
+        int32_t _connectedTsap = -1;
+};

components/knx/src/knx/application_program_object.cpp

@@ -0,0 +1,99 @@
+#include "application_program_object.h"
+#include "bits.h"
+#include "data_property.h"
+#include "callback_property.h"
+#include "dptconvert.h"
+#include <cstring>
+
+ApplicationProgramObject::ApplicationProgramObject(Memory& memory)
+#if MASK_VERSION == 0x091A
+    : TableObject(memory, 0x0100, 0x0100)
+#else
+    : TableObject(memory)
+#endif
+{
+    Property* properties[] =
+    {
+        new DataProperty(PID_OBJECT_TYPE, false, PDT_UNSIGNED_INT, 1, ReadLv3 | WriteLv0, (uint16_t)OT_APPLICATION_PROG),
+        new DataProperty(PID_PROG_VERSION, true, PDT_GENERIC_05, 1, ReadLv3 | WriteLv3),
+        new CallbackProperty<ApplicationProgramObject>(this, PID_PEI_TYPE, false, PDT_UNSIGNED_CHAR, 1, ReadLv3 | WriteLv0,
+        [](ApplicationProgramObject * io, uint16_t start, uint8_t count, uint8_t* data) -> uint8_t {
+            if (start == 0)
+            {
+                uint16_t currentNoOfElements = 1;
+                pushWord(currentNoOfElements, data);
+                return 1;
+            }
+
+            data[0] = 0;
+            return 1;
+        })
+    };
+
+    TableObject::initializeProperties(sizeof(properties), properties);
+}
+
+uint8_t* ApplicationProgramObject::save(uint8_t* buffer)
+{
+    uint8_t programVersion[5];
+    property(PID_PROG_VERSION)->read(programVersion);
+    buffer = pushByteArray(programVersion, 5, buffer);
+
+    return TableObject::save(buffer);
+}
+
+const uint8_t* ApplicationProgramObject::restore(const uint8_t* buffer)
+{
+    uint8_t programVersion[5];
+    buffer = popByteArray(programVersion, 5, buffer);
+    property(PID_PROG_VERSION)->write(programVersion);
+
+    return TableObject::restore(buffer);
+}
+
+uint16_t ApplicationProgramObject::saveSize()
+{
+    return TableObject::saveSize() + 5; // sizeof(programVersion)
+}
+
+uint8_t* ApplicationProgramObject::data(uint32_t addr)
+{
+    return TableObject::data() + addr;
+}
+
+uint8_t ApplicationProgramObject::getByte(uint32_t addr)
+{
+    return *(TableObject::data() + addr);
+}
+
+uint16_t ApplicationProgramObject::getWord(uint32_t addr)
+{
+    return ::getWord(TableObject::data() + addr);
+}
+
+uint32_t ApplicationProgramObject::getInt(uint32_t addr)
+{
+    return ::getInt(TableObject::data() + addr);
+}
+
+double ApplicationProgramObject::getFloat(uint32_t addr, ParameterFloatEncodings encoding)
+{
+    switch (encoding)
+    {
+        case Float_Enc_DPT9:
+            return float16FromPayload(TableObject::data() + addr, 0);
+            break;
+
+        case Float_Enc_IEEE754Single:
+            return float32FromPayload(TableObject::data() + addr, 0);
+            break;
+
+        case Float_Enc_IEEE754Double:
+            return float64FromPayload(TableObject::data() + addr, 0);
+            break;
+
+        default:
+            return 0;
+            break;
+    }
+}

components/knx/src/knx/application_program_object.h

@@ -0,0 +1,18 @@
+#pragma once
+
+#include "table_object.h"
+#include "bits.h"
+
+class ApplicationProgramObject : public TableObject
+{
+    public:
+        ApplicationProgramObject(Memory& memory);
+        uint8_t* save(uint8_t* buffer) override;
+        const uint8_t* restore(const uint8_t* buffer) override;
+        uint16_t saveSize() override;
+        uint8_t* data(uint32_t addr);
+        uint8_t getByte(uint32_t addr);
+        uint16_t getWord(uint32_t addr);
+        uint32_t getInt(uint32_t addr);
+        double getFloat(uint32_t addr, ParameterFloatEncodings encoding);
+};

components/knx/src/knx/association_table_object.cpp

@@ -0,0 +1,174 @@
+#include <cstring>
+
+#include "association_table_object.h"
+#include "bits.h"
+#include "data_property.h"
+
+using namespace std;
+
+AssociationTableObject::AssociationTableObject(Memory& memory)
+    : TableObject(memory)
+{
+    Property* properties[] =
+    {
+        new DataProperty(PID_OBJECT_TYPE, false, PDT_UNSIGNED_INT, 1, ReadLv3 | WriteLv0, (uint16_t)OT_ASSOC_TABLE),
+        new DataProperty(PID_TABLE, false, PDT_GENERIC_04, 65535, ReadLv3 | WriteLv0) //FIXME: implement correctly
+    };
+
+    TableObject::initializeProperties(sizeof(properties), properties);
+}
+
+uint16_t AssociationTableObject::entryCount()
+{
+    return ntohs(_tableData[0]);
+}
+
+uint16_t AssociationTableObject::getTSAP(uint16_t idx)
+{
+    if (idx >= entryCount())
+        return 0;
+
+    return ntohs(_tableData[2 * idx + 1]);
+}
+
+uint16_t AssociationTableObject::getASAP(uint16_t idx)
+{
+    if (idx >= entryCount())
+        return 0;
+
+    return ntohs(_tableData[2 * idx + 2]);
+}
+
+// after any table change the table is checked if it allows
+// binary search access. If not, sortedEntryCount stays 0,
+// otherwise sortedEntryCount represents size of bin search array
+void AssociationTableObject::prepareBinarySearch()
+{
+    sortedEntryCount = 0;
+#ifdef USE_BINSEARCH
+    uint16_t lastASAP = 0;
+    uint16_t currentASAP = 0;
+    uint16_t lookupIdx = 0;
+    uint16_t lookupASAP = 0;
+
+    // we iterate through all ASAP
+    // the first n ASAP are sorted (strictly increasing number), these are assigning sending TSAP
+    // the remaining ASAP have to be all repetitions, otherwise we set sortedEntryCount to 0, which forces linear search
+    if (_tableData != nullptr)
+    {
+        for (uint16_t idx = 0; idx < entryCount(); idx++)
+        {
+            currentASAP = getASAP(idx);
+
+            if (sortedEntryCount)
+            {
+                // look if the remaining ASAP exist in the previously sorted list.
+                while (lookupIdx < sortedEntryCount)
+                {
+                    lookupASAP = getASAP(lookupIdx);
+
+                    if (currentASAP <= lookupASAP)
+                        break; // while
+                    else
+                        lookupIdx++;
+                }
+
+                if (currentASAP < lookupASAP || lookupIdx >= sortedEntryCount)
+                {
+                    // a new ASAP found, we force linear search
+                    sortedEntryCount = 0;
+                    break; // for
+                }
+            }
+            else
+            {
+                // check for strictly increasing ASAP
+                if (currentASAP > lastASAP)
+                    lastASAP = currentASAP;
+                else
+                {
+                    sortedEntryCount = idx; // last found index indicates end of sorted list
+                    idx--; // current item has to be handled as remaining ASAP
+                }
+            }
+        }
+
+        // in case complete table is strictly increasing
+        if (lookupIdx == 0 && sortedEntryCount == 0)
+            sortedEntryCount = entryCount();
+    }
+
+#endif
+}
+
+const uint8_t* AssociationTableObject::restore(const uint8_t* buffer)
+{
+    buffer = TableObject::restore(buffer);
+    _tableData = (uint16_t*)data();
+    prepareBinarySearch();
+    return buffer;
+}
+
+// return type is int32 so that we can return uint16 and -1
+int32_t AssociationTableObject::translateAsap(uint16_t asap)
+{
+    // sortedEntryCount is determined in prepareBinarySearch()
+    // if ETS provides strictly increasing numbers for ASAP
+    // represents the size of the array to search
+    if (sortedEntryCount)
+    {
+        uint16_t low = 0;
+        uint16_t high = sortedEntryCount - 1;
+
+        while (low <= high)
+        {
+            uint16_t i = (low + high) / 2;
+            uint16_t asap_i = getASAP(i);
+
+            if (asap_i == asap)
+                return getTSAP(i);
+
+            if (asap_i > asap)
+                high = i - 1;
+            else
+                low = i + 1 ;
+        }
+    }
+    else
+    {
+        // if ASAP numbers are not strictly increasing linear seach is used
+        for (uint16_t i = 0; i < entryCount(); i++)
+            if (getASAP(i) == asap)
+                return getTSAP(i);
+    }
+
+    return -1;
+}
+
+void AssociationTableObject::beforeStateChange(LoadState& newState)
+{
+    TableObject::beforeStateChange(newState);
+
+    if (newState != LS_LOADED)
+        return;
+
+    _tableData = (uint16_t*)data();
+    prepareBinarySearch();
+}
+
+int32_t AssociationTableObject::nextAsap(uint16_t tsap, uint16_t& startIdx)
+{
+    uint16_t entries = entryCount();
+
+    for (uint16_t i = startIdx; i < entries; i++)
+    {
+        startIdx = i + 1;
+
+        if (getTSAP(i) == tsap)
+        {
+            return getASAP(i);
+        }
+    }
+
+    return -1;
+}

components/knx/src/knx/association_table_object.h

@@ -0,0 +1,25 @@
+#pragma once
+
+#include "table_object.h"
+
+class AssociationTableObject : public TableObject
+{
+    public:
+        AssociationTableObject(Memory& memory);
+
+        const uint8_t* restore(const uint8_t* buffer) override;
+
+        int32_t translateAsap(uint16_t asap);
+        int32_t nextAsap(uint16_t tsap, uint16_t& startIdx);
+
+    protected:
+        void beforeStateChange(LoadState& newState) override;
+
+    private:
+        uint16_t entryCount();
+        uint16_t getTSAP(uint16_t idx);
+        uint16_t getASAP(uint16_t idx);
+        void prepareBinarySearch();
+        uint16_t* _tableData = 0;
+        uint16_t sortedEntryCount;
+};

components/knx/src/knx/bau.cpp

@@ -0,0 +1,392 @@
+#include "bau.h"
+
+void BusAccessUnit::groupValueReadLocalConfirm(AckType ack, uint16_t asap, Priority priority, HopCountType hopType, const SecurityControl& secCtrl, bool status)
+{
+}
+
+void BusAccessUnit::groupValueReadIndication(uint16_t asap, Priority priority, HopCountType hopType, const SecurityControl& secCtrl)
+{
+}
+
+void BusAccessUnit::groupValueReadResponseConfirm(AckType ack, uint16_t asap, Priority priority, HopCountType hopTtype, const SecurityControl& secCtrl, uint8_t* data, uint8_t dataLength, bool status)
+{
+}
+
+void BusAccessUnit::groupValueReadAppLayerConfirm(uint16_t asap, Priority priority, HopCountType hopType, const SecurityControl& secCtrl, uint8_t* data, uint8_t dataLength)
+{
+}
+
+void BusAccessUnit::groupValueWriteLocalConfirm(AckType ack, uint16_t asap, Priority priority, HopCountType hopType, const SecurityControl& secCtrl, uint8_t* data, uint8_t dataLength, bool status)
+{
+}
+
+void BusAccessUnit::groupValueWriteIndication(uint16_t asap, Priority priority, HopCountType hopType, const SecurityControl& secCtrl, uint8_t* data, uint8_t dataLength)
+{
+}
+
+void BusAccessUnit::individualAddressWriteLocalConfirm(AckType ack, HopCountType hopType, const SecurityControl& secCtrl, uint16_t newaddress, bool status)
+{
+}
+
+void BusAccessUnit::individualAddressWriteIndication(HopCountType hopType, const SecurityControl& secCtrl, uint16_t newaddress)
+{
+}
+
+void BusAccessUnit::individualAddressReadLocalConfirm(AckType ack, HopCountType hopType, const SecurityControl& secCtrl, bool status)
+{
+}
+
+void BusAccessUnit::individualAddressReadIndication(HopCountType hopType, const SecurityControl& secCtrl)
+{
+}
+
+void BusAccessUnit::individualAddressReadResponseConfirm(AckType ack, HopCountType hopType, const SecurityControl& secCtrl, bool status)
+{
+}
+
+void BusAccessUnit::individualAddressReadAppLayerConfirm(HopCountType hopType, const SecurityControl& secCtrl, uint16_t individualAddress)
+{
+}
+
+void BusAccessUnit::individualAddressSerialNumberReadLocalConfirm(AckType ack, HopCountType hopType, const SecurityControl& secCtrl, uint8_t* serialNumber, bool status)
+{
+}
+
+void BusAccessUnit::individualAddressSerialNumberReadIndication(Priority priority, HopCountType hopType, const SecurityControl& secCtrl, uint8_t* knxSerialNumber)
+{
+}
+
+void BusAccessUnit::individualAddressSerialNumberReadResponseConfirm(AckType ack, HopCountType hopType, const SecurityControl& secCtrl, uint8_t* serialNumber, uint16_t domainAddress, bool status)
+{
+}
+
+void BusAccessUnit::individualAddressSerialNumberReadAppLayerConfirm(HopCountType hopType, const SecurityControl& secCtrl, uint8_t* serialNumber, uint16_t individualAddress, uint16_t domainAddress)
+{
+}
+
+void BusAccessUnit::individualAddressSerialNumberWriteLocalConfirm(AckType ack, HopCountType hopType, const SecurityControl& secCtrl, uint8_t* serialNumber, uint16_t newaddress, bool status)
+{
+}
+
+void BusAccessUnit::individualAddressSerialNumberWriteIndication(Priority priority, HopCountType hopType, const SecurityControl& secCtrl, uint16_t newIndividualAddress,
+        uint8_t* knxSerialNumber)
+{
+}
+
+void BusAccessUnit::deviceDescriptorReadLocalConfirm(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t descriptorType, bool status)
+{
+}
+
+void BusAccessUnit::deviceDescriptorReadIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t descriptorType)
+{
+}
+
+void BusAccessUnit::deviceDescriptorReadResponseConfirm(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t descriptor_type,
+        uint8_t* device_descriptor, bool status)
+{
+}
+
+void BusAccessUnit::deviceDescriptorReadAppLayerConfirm(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t descriptortype, uint8_t* deviceDescriptor)
+{
+}
+
+void BusAccessUnit::restartRequestLocalConfirm(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, bool status)
+{
+}
+
+void BusAccessUnit::restartRequestIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, RestartType restartType, EraseCode eraseCode, uint8_t channel)
+{
+}
+
+void BusAccessUnit::propertyValueReadLocalConfirm(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t objectIndex, uint8_t propertyId, uint8_t numberOfElements, uint16_t startIndex, bool status)
+{
+}
+
+void BusAccessUnit::propertyValueReadIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t objectIndex, uint8_t propertyId, uint8_t numberOfElements, uint16_t startIndex)
+{
+}
+
+void BusAccessUnit::propertyValueExtReadIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, ObjectType objectType, uint8_t objectInstance,
+        uint8_t propertyId, uint8_t numberOfElements, uint16_t startIndex)
+{
+}
+
+void BusAccessUnit::functionPropertyCommandIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t objectIndex, uint8_t propertyId, uint8_t* data, uint8_t length)
+{
+}
+
+void BusAccessUnit::functionPropertyStateIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t objectIndex, uint8_t propertyId, uint8_t* data, uint8_t length)
+{
+}
+
+void BusAccessUnit::functionPropertyExtCommandIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, ObjectType objectType, uint8_t objectInstance, uint8_t propertyId, uint8_t* data, uint8_t length)
+{
+}
+
+void BusAccessUnit::functionPropertyExtStateIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, ObjectType objectType, uint8_t objectInstance, uint8_t propertyId, uint8_t* data, uint8_t length)
+{
+}
+
+void BusAccessUnit::propertyValueReadResponseConfirm(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t objectIndex, uint8_t propertyId, uint8_t numberOfElements, uint16_t startIndex, uint8_t* data, uint8_t length, bool status)
+{
+}
+
+void BusAccessUnit::propertyValueReadAppLayerConfirm(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t objectIndex, uint8_t propertyId, uint8_t numberOfElements, uint16_t startIndex, uint8_t* data, uint8_t length)
+{
+}
+
+void BusAccessUnit::propertyValueWriteLocalConfirm(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t objectIndex, uint8_t propertyId, uint8_t numberOfElements, uint16_t startIndex, uint8_t* data, uint8_t length, bool status)
+{
+}
+
+void BusAccessUnit::propertyValueWriteIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t objectIndex, uint8_t propertyId, uint8_t numberOfElements, uint16_t startIndex, uint8_t* data, uint8_t length)
+{
+}
+
+void BusAccessUnit::propertyValueExtWriteIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, ObjectType objectType, uint8_t objectInstance, uint8_t propertyId, uint8_t numberOfElements, uint16_t startIndex, uint8_t* data, uint8_t length, bool confirmed)
+{
+}
+
+void BusAccessUnit::propertyDescriptionReadLocalConfirm(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t objectIndex, uint8_t propertyId, uint8_t propertyIndex, bool status)
+{
+}
+
+void BusAccessUnit::propertyExtDescriptionReadLocalConfirm(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint16_t objectIndex, uint8_t propertyId, uint16_t propertyIndex, bool status)
+{
+}
+
+void BusAccessUnit::propertyDescriptionReadIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t objectIndex, uint8_t propertyId, uint8_t propertyIndex)
+{
+}
+
+void BusAccessUnit::propertyExtDescriptionReadIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl,
+        uint16_t objectType, uint16_t objectInstance, uint16_t propertyId, uint8_t descriptionType, uint16_t propertyIndex)
+{
+}
+
+void BusAccessUnit::propertyDescriptionReadResponse(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t objectIndex, uint8_t propertyId, uint8_t propertyIndex, bool writeEnable, uint8_t type, uint16_t maxNumberOfElements, uint8_t access)
+{
+}
+
+void BusAccessUnit::propertyDescriptionReadResponseConfirm(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t objectIndex, uint8_t propertyId, uint8_t propertyIndex, bool writeEnable, uint8_t type, uint16_t maxNumberOfElements, uint8_t access, bool status)
+{
+}
+
+void BusAccessUnit::propertyDescriptionReadAppLayerConfirm(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t objectIndex, uint8_t propertyId, uint8_t propertyIndex, bool writeEnable, uint8_t type, uint16_t maxNumberOfElements, uint8_t access)
+{
+}
+
+void BusAccessUnit::memoryReadLocalConfirm(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number, uint16_t memoryAddress, bool status)
+{
+}
+
+void BusAccessUnit::memoryReadIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number, uint16_t memoryAddress)
+{
+}
+
+void BusAccessUnit::memoryReadResponseConfirm(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number, uint16_t memoryAddress, uint8_t* data, bool status)
+{
+}
+
+void BusAccessUnit::memoryReadAppLayerConfirm(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number, uint16_t memoryAddress, uint8_t* data)
+{
+}
+
+void BusAccessUnit::memoryWriteLocalConfirm(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number, uint16_t memoryAddress, uint8_t* data, bool status)
+{
+}
+
+void BusAccessUnit::memoryWriteIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number, uint16_t memoryAddress, uint8_t* data)
+{
+}
+
+void BusAccessUnit::memoryRouterWriteIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number, uint16_t memoryAddress, uint8_t* data)
+{
+}
+void BusAccessUnit::memoryRouterReadAppLayerConfirm(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number, uint16_t memoryAddress, uint8_t* data)
+{
+}
+void BusAccessUnit::memoryRoutingTableReadIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number, uint16_t memoryAddress)
+{
+}
+void BusAccessUnit::memoryRoutingTableReadAppLayerConfirm(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number, uint16_t memoryAddress, uint8_t* data)
+{
+}
+void BusAccessUnit::memoryRoutingTableWriteIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number, uint16_t memoryAddress, uint8_t* data)
+{
+}
+
+void BusAccessUnit::memoryExtReadLocalConfirm(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number, uint32_t memoryAddress, bool status)
+{
+}
+
+void BusAccessUnit::memoryExtReadIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number, uint32_t memoryAddress)
+{
+}
+
+void BusAccessUnit::memoryExtReadResponseConfirm(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number, uint32_t memoryAddress, uint8_t* data, bool status)
+{
+}
+
+void BusAccessUnit::memoryExtReadAppLayerConfirm(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number, uint32_t memoryAddress, uint8_t* data)
+{
+}
+
+void BusAccessUnit::memoryExtWriteLocalConfirm(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number, uint32_t memoryAddress, uint8_t* data, bool status)
+{
+}
+
+void BusAccessUnit::memoryExtWriteIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number, uint32_t memoryAddress, uint8_t* data)
+{
+}
+
+void BusAccessUnit::memoryExtWriteResponseConfirm(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number, uint32_t memoryAddress, uint8_t* data, bool status)
+{
+}
+
+void BusAccessUnit::memoryExtWriteAppLayerConfirm(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number, uint32_t memoryAddress, uint8_t* data)
+{
+}
+
+void BusAccessUnit::userMemoryReadLocalConfirm(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number, uint32_t memoryAddress, bool status)
+{
+}
+
+void BusAccessUnit::userMemoryReadIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number, uint32_t memoryAddress)
+{
+}
+
+void BusAccessUnit::userMemoryReadResponseConfirm(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number, uint32_t memoryAddress, uint8_t* memoryData, bool status)
+{
+}
+
+void BusAccessUnit::userMemoryReadAppLayerConfirm(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number, uint32_t memoryAddress, uint8_t* memoryData)
+{
+}
+
+void BusAccessUnit::userMemoryWriteLocalConfirm(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number, uint32_t memoryAddress, uint8_t* memoryData, bool status)
+{
+}
+
+void BusAccessUnit::userMemoryWriteIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number, uint32_t memoryAddress, uint8_t* memoryData)
+{
+}
+
+void BusAccessUnit::userManufacturerInfoLocalConfirm(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, bool status)
+{
+}
+
+void BusAccessUnit::userManufacturerInfoIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl)
+{
+}
+
+void BusAccessUnit::userManufacturerInfoResponseConfirm(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t* info, bool status)
+{
+}
+
+void BusAccessUnit::userManufacturerInfoAppLayerConfirm(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t* info)
+{
+}
+
+void BusAccessUnit::authorizeLocalConfirm(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint32_t key, bool status)
+{
+}
+
+void BusAccessUnit::authorizeIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint32_t key)
+{
+}
+
+void BusAccessUnit::authorizeResponseConfirm(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t level, bool status)
+{
+}
+
+void BusAccessUnit::authorizeAppLayerConfirm(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t level)
+{
+}
+
+void BusAccessUnit::keyWriteLocalConfirm(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t level, uint32_t key, bool status)
+{
+}
+
+void BusAccessUnit::keyWriteIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t level, uint32_t key)
+{
+}
+
+void BusAccessUnit::keyWriteResponseConfirm(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t level, bool status)
+{
+}
+
+void BusAccessUnit::keyWriteAppLayerConfirm(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t level)
+{
+}
+
+void BusAccessUnit::connectConfirm(uint16_t destination)
+{
+}
+
+void BusAccessUnit::systemNetworkParameterReadIndication(Priority priority, HopCountType hopType, const SecurityControl& secCtrl, uint16_t objectType,
+        uint16_t propertyId, uint8_t* testInfo, uint16_t testInfoLength)
+{
+}
+
+void BusAccessUnit::domainAddressSerialNumberWriteIndication(Priority priority, HopCountType hopType, const SecurityControl& secCtrl, const uint8_t* rfDoA,
+        const uint8_t* knxSerialNumber)
+{
+}
+
+void BusAccessUnit::domainAddressSerialNumberReadIndication(Priority priority, HopCountType hopType, const SecurityControl& secCtrl, const uint8_t* knxSerialNumber)
+{
+}
+
+void BusAccessUnit::systemNetworkParameterReadLocalConfirm(Priority priority, HopCountType hopType, const SecurityControl& secCtrl, uint16_t objectType,
+        uint16_t propertyId, uint8_t* testInfo, uint16_t testInfoLength, bool status)
+{
+}
+
+void BusAccessUnit::domainAddressSerialNumberWriteLocalConfirm(Priority priority, HopCountType hopType, const SecurityControl& secCtrl, const uint8_t* rfDoA,
+        const uint8_t* knxSerialNumber, bool status)
+{
+}
+
+void BusAccessUnit::domainAddressSerialNumberReadLocalConfirm(Priority priority, HopCountType hopType, const SecurityControl& secCtrl, const uint8_t* knxSerialNumber, bool status)
+{
+}
+
+void BusAccessUnit::propertyValueRead(ObjectType objectType, uint8_t objectInstance, uint8_t propertyId,
+                                      uint8_t& numberOfElements, uint16_t startIndex,
+                                      uint8_t** data, uint32_t& length)
+{
+}
+
+void BusAccessUnit::propertyValueWrite(ObjectType objectType, uint8_t objectInstance, uint8_t propertyId,
+                                       uint8_t& numberOfElements, uint16_t startIndex,
+                                       uint8_t* data, uint32_t length)
+{
+}
+
+void BusAccessUnit::beforeRestartCallback(BeforeRestartCallback func)
+{
+}
+
+BeforeRestartCallback BusAccessUnit::beforeRestartCallback()
+{
+    return 0;
+}
+
+void BusAccessUnit::functionPropertyCallback(FunctionPropertyCallback func)
+{
+}
+
+FunctionPropertyCallback BusAccessUnit::functionPropertyCallback()
+{
+    return 0;
+}
+
+void BusAccessUnit::functionPropertyStateCallback(FunctionPropertyCallback func)
+{
+}
+
+FunctionPropertyCallback BusAccessUnit::functionPropertyStateCallback()
+{
+    return 0;
+}

components/knx/src/knx/bau.h

@@ -0,0 +1,184 @@
+#pragma once
+#include <stdint.h>
+#include "knx_types.h"
+#include "interface_object.h"
+
+typedef void (*BeforeRestartCallback)(void);
+typedef bool (*FunctionPropertyCallback)(uint8_t objectIndex, uint8_t propertyId, uint8_t length, uint8_t* data, uint8_t* resultData, uint8_t& resultLength);
+
+class BusAccessUnit
+{
+    public:
+        virtual ~BusAccessUnit() {}
+        virtual void groupValueReadLocalConfirm(AckType ack, uint16_t asap, Priority priority, HopCountType hopType, const SecurityControl& secCtrl, bool status);
+        virtual void groupValueReadIndication(uint16_t asap, Priority priority, HopCountType hopType, const SecurityControl& secCtrl);
+        virtual void groupValueReadResponseConfirm(AckType ack, uint16_t asap, Priority priority, HopCountType hopTtype, const SecurityControl& secCtrl,
+                uint8_t* data, uint8_t dataLength, bool status);
+        virtual void groupValueReadAppLayerConfirm(uint16_t asap, Priority priority, HopCountType hopType, const SecurityControl& secCtrl,
+                uint8_t* data, uint8_t dataLength);
+        virtual void groupValueWriteLocalConfirm(AckType ack, uint16_t asap, Priority priority, HopCountType hopType, const SecurityControl& secCtrl,
+                uint8_t* data, uint8_t dataLength, bool status);
+        virtual void groupValueWriteIndication(uint16_t asap, Priority priority, HopCountType hopType, const SecurityControl& secCtrl,
+                                               uint8_t* data, uint8_t dataLength);
+        virtual void individualAddressWriteLocalConfirm(AckType ack, HopCountType hopType, const SecurityControl& secCtrl,
+                uint16_t newaddress, bool status);
+        virtual void individualAddressWriteIndication(HopCountType hopType, const SecurityControl& secCtrl, uint16_t newaddress);
+        virtual void individualAddressReadLocalConfirm(AckType ack, HopCountType hopType, const SecurityControl& secCtrl, bool status);
+        virtual void individualAddressReadIndication(HopCountType hopType, const SecurityControl& secCtrl);
+        virtual void individualAddressReadResponseConfirm(AckType ack, HopCountType hopType, const SecurityControl& secCtrl, bool status);
+        virtual void individualAddressReadAppLayerConfirm(HopCountType hopType, const SecurityControl& secCtrl, uint16_t individualAddress);
+        virtual void individualAddressSerialNumberReadLocalConfirm(AckType ack, HopCountType hopType, const SecurityControl& secCtrl,
+                uint8_t* serialNumber, bool status);
+        virtual void individualAddressSerialNumberReadIndication(Priority priority, HopCountType hopType, const SecurityControl& secCtrl, uint8_t* knxSerialNumber);
+        virtual void individualAddressSerialNumberReadResponseConfirm(AckType ack, HopCountType hopType, const SecurityControl& secCtrl,
+                uint8_t* serialNumber, uint16_t domainAddress, bool status);
+        virtual void individualAddressSerialNumberReadAppLayerConfirm(HopCountType hopType, const SecurityControl& secCtrl, uint8_t* serialNumber,
+                uint16_t individualAddress, uint16_t domainAddress);
+        virtual void individualAddressSerialNumberWriteLocalConfirm(AckType ack, HopCountType hopType, const SecurityControl& secCtrl, uint8_t* serialNumber,
+                uint16_t newaddress, bool status);
+        virtual void individualAddressSerialNumberWriteIndication(Priority priority, HopCountType hopType, const SecurityControl& secCtrl, uint16_t newIndividualAddress,
+                uint8_t* knxSerialNumber);
+        virtual void deviceDescriptorReadLocalConfirm(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl,
+                uint8_t descriptorType, bool status);
+        virtual void deviceDescriptorReadIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t descriptorType);
+        virtual void deviceDescriptorReadResponseConfirm(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl,
+                uint8_t descriptor_type, uint8_t* device_descriptor, bool status);
+        virtual void deviceDescriptorReadAppLayerConfirm(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl,
+                uint8_t descriptortype, uint8_t* deviceDescriptor);
+        virtual void restartRequestLocalConfirm(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, bool status);
+        virtual void restartRequestIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, RestartType restartType, EraseCode eraseCode, uint8_t channel);
+        virtual void propertyValueReadLocalConfirm(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl,
+                uint8_t objectIndex, uint8_t propertyId, uint8_t numberOfElements, uint16_t startIndex, bool status);
+        virtual void propertyValueReadIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t objectIndex,
+                uint8_t propertyId, uint8_t numberOfElements, uint16_t startIndex);
+        virtual void propertyValueExtReadIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, ObjectType objectType, uint8_t objectInstance,
+                uint8_t propertyId, uint8_t numberOfElements, uint16_t startIndex);
+        virtual void functionPropertyCommandIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t objectIndex,
+                uint8_t propertyId, uint8_t* data, uint8_t length);
+        virtual void functionPropertyStateIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t objectIndex,
+                uint8_t propertyId, uint8_t* data, uint8_t length);
+        virtual void functionPropertyExtCommandIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, ObjectType objectType, uint8_t objectInstance,
+                uint8_t propertyId, uint8_t* data, uint8_t length);
+        virtual void functionPropertyExtStateIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, ObjectType objectType, uint8_t objectInstance,
+                uint8_t propertyId, uint8_t* data, uint8_t length);
+        virtual void propertyValueReadResponseConfirm(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t objectIndex,
+                uint8_t propertyId, uint8_t numberOfElements, uint16_t startIndex, uint8_t* data, uint8_t length, bool status);
+        virtual void propertyValueReadAppLayerConfirm(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t objectIndex,
+                uint8_t propertyId, uint8_t numberOfElements, uint16_t startIndex, uint8_t* data, uint8_t length);
+        virtual void propertyValueWriteLocalConfirm(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t objectIndex,
+                uint8_t propertyId, uint8_t numberOfElements, uint16_t startIndex, uint8_t* data, uint8_t length, bool status);
+        virtual void propertyValueWriteIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t objectIndex,
+                uint8_t propertyId, uint8_t numberOfElements, uint16_t startIndex, uint8_t* data, uint8_t length);
+        virtual void propertyValueExtWriteIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, ObjectType objectType, uint8_t objectInstance,
+                uint8_t propertyId, uint8_t numberOfElements, uint16_t startIndex, uint8_t* data, uint8_t length, bool confirmed);
+        virtual void propertyDescriptionReadLocalConfirm(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl,
+                uint8_t objectIndex, uint8_t propertyId, uint8_t propertyIndex, bool status);
+        virtual void propertyExtDescriptionReadLocalConfirm(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl,
+                uint16_t objectIndex, uint8_t propertyId, uint16_t propertyIndex, bool status);
+        virtual void propertyDescriptionReadIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl,
+                uint8_t objectIndex, uint8_t propertyId, uint8_t propertyIndex);
+        virtual void propertyExtDescriptionReadIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl,
+                uint16_t objectType, uint16_t objectInstance, uint16_t propertyId, uint8_t descriptionType, uint16_t propertyIndex);
+        virtual void propertyDescriptionReadResponse(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl,
+                uint8_t objectIndex, uint8_t propertyId, uint8_t propertyIndex, bool writeEnable, uint8_t type,
+                uint16_t maxNumberOfElements, uint8_t access);
+        virtual void propertyDescriptionReadResponseConfirm(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl,
+                uint8_t objectIndex, uint8_t propertyId, uint8_t propertyIndex, bool writeEnable, uint8_t type,
+                uint16_t maxNumberOfElements, uint8_t access, bool status);
+        virtual void propertyDescriptionReadAppLayerConfirm(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl,
+                uint8_t objectIndex, uint8_t propertyId, uint8_t propertyIndex, bool writeEnable, uint8_t type,
+                uint16_t maxNumberOfElements, uint8_t access);
+        virtual void memoryReadLocalConfirm(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
+                                            uint16_t memoryAddress, bool status);
+        virtual void memoryReadIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number, uint16_t memoryAddress);
+        virtual void memoryReadResponseConfirm(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
+                                               uint16_t memoryAddress, uint8_t* data, bool status);
+        virtual void memoryReadAppLayerConfirm(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
+                                               uint16_t memoryAddress, uint8_t* data);
+        virtual void memoryWriteLocalConfirm(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
+                                             uint16_t memoryAddress, uint8_t* data, bool status);
+        virtual void memoryWriteIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
+                                           uint16_t memoryAddress, uint8_t* data);
+        virtual void memoryRouterWriteIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
+                uint16_t memoryAddress, uint8_t* data);
+        virtual void memoryRouterReadAppLayerConfirm(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
+                uint16_t memoryAddress, uint8_t* data);
+        virtual void memoryRoutingTableReadIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number, uint16_t memoryAddress);
+        virtual void memoryRoutingTableReadAppLayerConfirm(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number, uint16_t memoryAddress, uint8_t* data);
+        virtual void memoryRoutingTableWriteIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number, uint16_t memoryAddress, uint8_t* data);
+        virtual void memoryExtReadLocalConfirm(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
+                                               uint32_t memoryAddress, bool status);
+        virtual void memoryExtReadIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number, uint32_t memoryAddress);
+        virtual void memoryExtReadResponseConfirm(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
+                uint32_t memoryAddress, uint8_t* data, bool status);
+        virtual void memoryExtReadAppLayerConfirm(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
+                uint32_t memoryAddress, uint8_t* data);
+        virtual void memoryExtWriteLocalConfirm(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
+                                                uint32_t memoryAddress, uint8_t* data, bool status);
+        virtual void memoryExtWriteIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
+                                              uint32_t memoryAddress, uint8_t* data);
+        virtual void memoryExtWriteResponseConfirm(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
+                uint32_t memoryAddress, uint8_t* data, bool status);
+        virtual void memoryExtWriteAppLayerConfirm(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
+                uint32_t memoryAddress, uint8_t* data);
+        virtual void userMemoryReadLocalConfirm(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
+                                                uint32_t memoryAddress, bool status);
+        virtual void userMemoryReadIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
+                                              uint32_t memoryAddress);
+        virtual void userMemoryReadResponseConfirm(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
+                uint32_t memoryAddress, uint8_t* memoryData, bool status);
+        virtual void userMemoryReadAppLayerConfirm(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
+                uint32_t memoryAddress, uint8_t* memoryData);
+        virtual void userMemoryWriteLocalConfirm(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
+                uint32_t memoryAddress, uint8_t* memoryData, bool status);
+        virtual void userMemoryWriteIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
+                                               uint32_t memoryAddress, uint8_t* memoryData);
+        virtual void userManufacturerInfoLocalConfirm(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, bool status);
+        virtual void userManufacturerInfoIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl);
+        virtual void userManufacturerInfoResponseConfirm(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl,
+                uint8_t* info, bool status);
+        virtual void userManufacturerInfoAppLayerConfirm(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl,
+                uint8_t* info);
+        virtual void authorizeLocalConfirm(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint32_t key, bool status);
+        virtual void authorizeIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint32_t key);
+        virtual void authorizeResponseConfirm(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t level,
+                                              bool status);
+        virtual void authorizeAppLayerConfirm(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t level);
+        virtual void keyWriteLocalConfirm(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t level,
+                                          uint32_t key, bool status);
+        virtual void keyWriteIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t level,
+                                        uint32_t key);
+        virtual void keyWriteResponseConfirm(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t level,
+                                             bool status);
+        virtual void keyWriteAppLayerConfirm(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t level);
+        virtual void connectConfirm(uint16_t destination);
+        virtual void systemNetworkParameterReadIndication(Priority priority, HopCountType hopType, const SecurityControl& secCtrl, uint16_t objectType,
+                uint16_t propertyId, uint8_t* testInfo, uint16_t testInfoLength);
+
+        virtual void domainAddressSerialNumberWriteIndication(Priority priority, HopCountType hopType, const SecurityControl& secCtrl, const uint8_t* rfDoA,
+                const uint8_t* knxSerialNumber);
+
+        virtual void domainAddressSerialNumberReadIndication(Priority priority, HopCountType hopType, const SecurityControl& secCtrl, const uint8_t* knxSerialNumber);
+
+        virtual void systemNetworkParameterReadLocalConfirm(Priority priority, HopCountType hopType, const SecurityControl& secCtrl, uint16_t objectType,
+                uint16_t propertyId, uint8_t* testInfo, uint16_t testInfoLength, bool status);
+
+        virtual void domainAddressSerialNumberWriteLocalConfirm(Priority priority, HopCountType hopType, const SecurityControl& secCtrl, const uint8_t* rfDoA,
+                const uint8_t* knxSerialNumber, bool status);
+
+        virtual void domainAddressSerialNumberReadLocalConfirm(Priority priority, HopCountType hopType, const SecurityControl& secCtrl, const uint8_t* knxSerialNumber, bool status);
+
+        virtual void propertyValueRead(ObjectType objectType, uint8_t objectInstance, uint8_t propertyId,
+                                       uint8_t& numberOfElements, uint16_t startIndex,
+                                       uint8_t** data, uint32_t& length);
+
+        virtual void propertyValueWrite(ObjectType objectType, uint8_t objectInstance, uint8_t propertyId,
+                                        uint8_t& numberOfElements, uint16_t startIndex,
+                                        uint8_t* data, uint32_t length);
+        virtual void beforeRestartCallback(BeforeRestartCallback func);
+        virtual BeforeRestartCallback beforeRestartCallback();
+        virtual void functionPropertyCallback(FunctionPropertyCallback func);
+        virtual FunctionPropertyCallback functionPropertyCallback();
+        virtual void functionPropertyStateCallback(FunctionPropertyCallback func);
+        virtual FunctionPropertyCallback functionPropertyStateCallback();
+};

components/knx/src/knx/bau07B0.cpp

@@ -0,0 +1,178 @@
+#include "config.h"
+#if MASK_VERSION == 0x07B0
+
+#include "bau07B0.h"
+#include "bits.h"
+#include <string.h>
+#include <stdio.h>
+
+using namespace std;
+
+Bau07B0::Bau07B0(Platform& platform)
+    : BauSystemBDevice(platform), DataLinkLayerCallbacks(),
+      _dlLayer(_deviceObj, _netLayer.getInterface(), _platform, (ITpUartCallBacks&) * this, (DataLinkLayerCallbacks*) this)
+#ifdef USE_CEMI_SERVER
+    , _cemiServer(*this)
+#endif
+{
+    _netLayer.getInterface().dataLinkLayer(_dlLayer);
+#ifdef USE_CEMI_SERVER
+    _cemiServerObject.setMediumTypeAsSupported(DptMedium::KNX_TP1);
+    _cemiServer.dataLinkLayer(_dlLayer);
+    _dlLayer.cemiServer(_cemiServer);
+    _memory.addSaveRestore(&_cemiServerObject);
+#endif
+    // Set Mask Version in Device Object depending on the BAU
+    _deviceObj.maskVersion(0x07B0);
+
+    // Set which interface objects are available in the device object
+    // This differs from BAU to BAU with different medium types.
+    // See PID_IO_LIST
+    Property* prop = _deviceObj.property(PID_IO_LIST);
+    prop->write(1, (uint16_t) OT_DEVICE);
+    prop->write(2, (uint16_t) OT_ADDR_TABLE);
+    prop->write(3, (uint16_t) OT_ASSOC_TABLE);
+    prop->write(4, (uint16_t) OT_GRP_OBJ_TABLE);
+    prop->write(5, (uint16_t) OT_APPLICATION_PROG);
+#if defined(USE_DATASECURE) && defined(USE_CEMI_SERVER)
+    prop->write(6, (uint16_t) OT_SECURITY);
+    prop->write(7, (uint16_t) OT_CEMI_SERVER);
+#elif defined(USE_DATASECURE)
+    prop->write(6, (uint16_t) OT_SECURITY);
+#elif defined(USE_CEMI_SERVER)
+    prop->write(6, (uint16_t) OT_CEMI_SERVER);
+#endif
+}
+
+InterfaceObject* Bau07B0::getInterfaceObject(uint8_t idx)
+{
+    switch (idx)
+    {
+        case 0:
+            return &_deviceObj;
+
+        case 1:
+            return &_addrTable;
+
+        case 2:
+            return &_assocTable;
+
+        case 3:
+            return &_groupObjTable;
+
+        case 4:
+            return &_appProgram;
+
+        case 5: // would be app_program 2
+            return nullptr;
+#if defined(USE_DATASECURE) && defined(USE_CEMI_SERVER)
+
+        case 6:
+            return &_secIfObj;
+
+        case 7:
+            return &_cemiServerObject;
+#elif defined(USE_CEMI_SERVER)
+
+        case 6:
+            return &_cemiServerObject;
+#elif defined(USE_DATASECURE)
+
+        case 6:
+            return &_secIfObj;
+#endif
+
+        default:
+            return nullptr;
+    }
+}
+
+InterfaceObject* Bau07B0::getInterfaceObject(ObjectType objectType, uint16_t objectInstance)
+{
+    // We do not use it right now.
+    // Required for coupler mode as there are multiple router objects for example
+    (void) objectInstance;
+
+    switch (objectType)
+    {
+        case OT_DEVICE:
+            return &_deviceObj;
+
+        case OT_ADDR_TABLE:
+            return &_addrTable;
+
+        case OT_ASSOC_TABLE:
+            return &_assocTable;
+
+        case OT_GRP_OBJ_TABLE:
+            return &_groupObjTable;
+
+        case OT_APPLICATION_PROG:
+            return &_appProgram;
+#ifdef USE_DATASECURE
+
+        case OT_SECURITY:
+            return &_secIfObj;
+#endif
+#ifdef USE_CEMI_SERVER
+
+        case OT_CEMI_SERVER:
+            return &_cemiServerObject;
+#endif
+
+        default:
+            return nullptr;
+    }
+}
+
+bool Bau07B0::enabled()
+{
+    return _dlLayer.enabled();
+}
+
+void Bau07B0::enabled(bool value)
+{
+    _dlLayer.enabled(value);
+}
+
+void Bau07B0::loop()
+{
+    _dlLayer.loop();
+    BauSystemBDevice::loop();
+#ifdef USE_CEMI_SERVER
+    _cemiServer.loop();
+#endif
+}
+
+TPAckType Bau07B0::isAckRequired(uint16_t address, bool isGrpAddr)
+{
+    if (isGrpAddr)
+    {
+        // ACK for broadcasts
+        if (address == 0)
+            return TPAckType::AckReqAck;
+
+        // is group address in group address table? ACK if yes.
+        if (_addrTable.contains(address))
+            return TPAckType::AckReqAck;
+        else
+            return TPAckType::AckReqNone;
+    }
+
+    // Also ACK for our own individual address
+    if (address  == _deviceObj.individualAddress())
+        return TPAckType::AckReqAck;
+
+    if (address == 0)
+    {
+        println("Invalid broadcast detected: destination address is 0, but address type is \"individual\"");
+    }
+
+    return TPAckType::AckReqNone;
+}
+
+TpUartDataLinkLayer* Bau07B0::getDataLinkLayer()
+{
+    return (TpUartDataLinkLayer*)&_dlLayer;
+}
+#endif

components/knx/src/knx/bau07B0.h

@@ -0,0 +1,34 @@
+#pragma once
+
+#include "config.h"
+#if MASK_VERSION == 0x07B0
+
+#include "bau_systemB_device.h"
+#include "tpuart_data_link_layer.h"
+#include "cemi_server.h"
+#include "cemi_server_object.h"
+
+class Bau07B0 : public BauSystemBDevice, public ITpUartCallBacks, public DataLinkLayerCallbacks
+{
+    public:
+        Bau07B0(Platform& platform);
+        void loop() override;
+        bool enabled() override;
+        void enabled(bool value) override;
+
+        TpUartDataLinkLayer* getDataLinkLayer();
+    protected:
+        InterfaceObject* getInterfaceObject(uint8_t idx);
+        InterfaceObject* getInterfaceObject(ObjectType objectType, uint16_t objectInstance);
+
+        // For TP1 only
+        TPAckType isAckRequired(uint16_t address, bool isGrpAddr) override;
+
+    private:
+        TpUartDataLinkLayer _dlLayer;
+#ifdef USE_CEMI_SERVER
+        CemiServer _cemiServer;
+        CemiServerObject _cemiServerObject;
+#endif
+};
+#endif

components/knx/src/knx/bau091A.cpp

@@ -0,0 +1,262 @@
+#include "config.h"
+#if MASK_VERSION == 0x091A
+
+#include "bau091A.h"
+#include "bits.h"
+#include <string.h>
+#include <stdio.h>
+
+using namespace std;
+
+/* ToDos
+Announce the line status of sec side 03_05_01 4.4.3
+implement PID_COUPLER_SERVICES_CONTROL 03_05_01 4.4.7
+*/
+
+Bau091A::Bau091A(Platform& platform)
+    : BauSystemBCoupler(platform), DataLinkLayerCallbacks(),
+      _routerObj(memory(), 0x200, 0x2000),  // the Filtertable of 0x091A IP Routers is fixed at 0x200 and 0x2000 long
+      _ipParameters(_deviceObj, platform),
+      _dlLayerPrimary(_deviceObj, _ipParameters, _netLayer.getPrimaryInterface(), _platform, (DataLinkLayerCallbacks*) this),
+      _dlLayerSecondary(_deviceObj, _netLayer.getSecondaryInterface(), platform, (ITpUartCallBacks&) * this, (DataLinkLayerCallbacks*) this)
+#ifdef USE_CEMI_SERVER
+    , _cemiServer(*this)
+#endif
+{
+    // Before accessing anything of the router object they have to be initialized according to the used medium
+    // Coupler model 1.x
+    _routerObj.initialize1x(DptMedium::KNX_IP, 220);
+
+    // Mask 091A uses older coupler model 1.x which only uses one router object
+    _netLayer.rtObj(_routerObj);
+
+    _netLayer.getPrimaryInterface().dataLinkLayer(_dlLayerPrimary);
+    _netLayer.getSecondaryInterface().dataLinkLayer(_dlLayerSecondary);
+
+#ifdef USE_CEMI_SERVER
+    _cemiServerObject.setMediumTypeAsSupported(DptMedium::KNX_IP);
+    _cemiServerObject.setMediumTypeAsSupported(DptMedium::KNX_TP1);
+    _cemiServer.dataLinkLayerPrimary(_dlLayerPrimary);
+    _cemiServer.dataLinkLayer(_dlLayerSecondary); // Secondary I/F is the important one!
+    _dlLayerPrimary.cemiServer(_cemiServer);
+    _dlLayerSecondary.cemiServer(_cemiServer);
+    _memory.addSaveRestore(&_cemiServerObject);
+    uint8_t count = 1;
+    uint16_t suppCommModes = 0x0100;
+    _cemiServerObject.writeProperty(PID_COMM_MODES_SUPPORTED, 1, (uint8_t*)&suppCommModes, count); // set the properties Bit 0 to 1 meaning "LinkLayer supported"
+#endif
+
+    _memory.addSaveRestore(&_routerObj);
+
+    _memory.addSaveRestore(&_ipParameters);
+
+    // Set Mask Version in Device Object depending on the BAU
+    _deviceObj.maskVersion(0x091A);
+
+    // Set which interface objects are available in the device object
+    // This differs from BAU to BAU with different medium types.
+    // See PID_IO_LIST
+    Property* prop = _deviceObj.property(PID_IO_LIST);
+    prop->write(1, (uint16_t) OT_DEVICE);
+    prop->write(2, (uint16_t) OT_ROUTER);
+    prop->write(3, (uint16_t) OT_APPLICATION_PROG);
+    prop->write(4, (uint16_t) OT_IP_PARAMETER);
+#if defined(USE_DATASECURE) && defined(USE_CEMI_SERVER)
+    prop->write(5, (uint16_t) OT_SECURITY);
+    prop->write(6, (uint16_t) OT_CEMI_SERVER);
+#elif defined(USE_DATASECURE)
+    prop->write(5, (uint16_t) OT_SECURITY);
+#elif defined(USE_CEMI_SERVER)
+    prop->write(5, (uint16_t) OT_CEMI_SERVER);
+#endif
+}
+
+InterfaceObject* Bau091A::getInterfaceObject(uint8_t idx)
+{
+    switch (idx)
+    {
+        case 0:
+            return &_deviceObj;
+
+        case 1:
+            return &_routerObj;
+
+        case 2:
+            return &_appProgram;
+
+        case 3:
+            return &_ipParameters;
+#if defined(USE_DATASECURE) && defined(USE_CEMI_SERVER)
+
+        case 4:
+            return &_secIfObj;
+
+        case 5:
+            return &_cemiServerObject;
+#elif defined(USE_CEMI_SERVER)
+
+        case 4:
+            return &_cemiServerObject;
+#elif defined(USE_DATASECURE)
+
+        case 4:
+            return &_secIfObj;
+#endif
+
+        default:
+            return nullptr;
+    }
+}
+
+InterfaceObject* Bau091A::getInterfaceObject(ObjectType objectType, uint16_t objectInstance)
+{
+    // We do not use it right now.
+    // Required for coupler mode as there are multiple router objects for example
+    (void) objectInstance;
+
+    switch (objectType)
+    {
+        case OT_DEVICE:
+            return &_deviceObj;
+
+        case OT_ROUTER:
+            return &_routerObj;
+
+        case OT_APPLICATION_PROG:
+            return &_appProgram;
+
+        case OT_IP_PARAMETER:
+            return &_ipParameters;
+#ifdef USE_DATASECURE
+
+        case OT_SECURITY:
+            return &_secIfObj;
+#endif
+#ifdef USE_CEMI_SERVER
+
+        case OT_CEMI_SERVER:
+            return &_cemiServerObject;
+#endif
+
+        default:
+            return nullptr;
+    }
+}
+
+void Bau091A::doMasterReset(EraseCode eraseCode, uint8_t channel)
+{
+    // Common SystemB objects
+    BauSystemBCoupler::doMasterReset(eraseCode, channel);
+
+    _ipParameters.masterReset(eraseCode, channel);
+    _routerObj.masterReset(eraseCode, channel);
+}
+
+bool Bau091A::enabled()
+{
+    return _dlLayerPrimary.enabled() && _dlLayerSecondary.enabled();
+}
+
+void Bau091A::enabled(bool value)
+{
+    _dlLayerPrimary.enabled(value);
+    _dlLayerSecondary.enabled(value);
+
+    // ToDo change frame repitition in the TP layer - but default is ok.
+    //_dlLayerSecondary.setFrameRepetition(3,3);
+}
+
+void Bau091A::loop()
+{
+    _dlLayerPrimary.loop();
+    _dlLayerSecondary.loop();
+    BauSystemBCoupler::loop();
+}
+
+TPAckType Bau091A::isAckRequired(uint16_t address, bool isGrpAddr)
+{
+    //only called from TpUartDataLinkLayer
+    TPAckType ack = TPAckType::AckReqNone;
+
+    uint8_t lcconfig = LCCONFIG::PHYS_FRAME_ROUT | LCCONFIG::PHYS_REPEAT | LCCONFIG::BROADCAST_REPEAT | LCCONFIG::GROUP_IACK_ROUT | LCCONFIG::PHYS_IACK_NORMAL; // default value from spec. in case prop is not availible.
+    Property* prop_lcconfig = _routerObj.property(PID_SUB_LCCONFIG);
+
+    if (lcconfig)
+        prop_lcconfig->read(lcconfig);
+
+    if (isGrpAddr)
+    {
+        // ACK for broadcasts
+        if (address == 0)
+        {
+            ack = TPAckType::AckReqAck;
+        }
+        else
+        {
+            if(lcconfig & LCCONFIG::GROUP_IACK_ROUT)
+            {
+                // is group address in filter table? ACK if yes, No if not
+                if(_netLayer.isRoutedGroupAddress(address, 1))
+                    ack = TPAckType::AckReqAck;
+                else
+                    ack = TPAckType::AckReqNone;
+            }
+            else
+            {
+                // all are ACKED
+                ack = TPAckType::AckReqAck;
+            }
+        }
+#ifdef KNX_TUNNELING
+
+        if (_dlLayerPrimary.isSentToTunnel(address, isGrpAddr))
+            ack = TPAckType::AckReqAck;
+
+#endif
+    }
+    else
+    {
+        if ((lcconfig & LCCONFIG::PHYS_IACK) == LCCONFIG::PHYS_IACK_ALL)
+            ack = TPAckType::AckReqAck;
+        else if ((lcconfig & LCCONFIG::PHYS_IACK) == LCCONFIG::PHYS_IACK_NACK)
+            ack = TPAckType::AckReqNack;
+        else if (_netLayer.isRoutedIndividualAddress(address, 1) || address == _deviceObj.individualAddress()) // Also ACK for our own individual address
+            ack = TPAckType::AckReqAck;
+        else
+            ack = TPAckType::AckReqNone;
+
+#ifdef KNX_TUNNELING
+
+        if (_dlLayerPrimary.isSentToTunnel(address, isGrpAddr))
+            ack = TPAckType::AckReqAck;
+
+#endif
+    }
+    return ack;
+}
+
+bool Bau091A::configured()
+{
+    // _configured is set to true initially, if the device was configured with ETS it will be set to true after restart
+
+    if (!_configured)
+        return false;
+
+    _configured = _routerObj.loadState() == LS_LOADED;
+#ifdef USE_DATASECURE
+    _configured &= _secIfObj.loadState() == LS_LOADED;
+#endif
+
+    return _configured;
+}
+
+IpDataLinkLayer* Bau091A::getPrimaryDataLinkLayer()
+{
+    return (IpDataLinkLayer*)&_dlLayerPrimary;
+}
+
+TpUartDataLinkLayer* Bau091A::getSecondaryDataLinkLayer()
+{
+    return (TpUartDataLinkLayer*)&_dlLayerSecondary;
+}
+#endif

components/knx/src/knx/bau091A.h

@@ -0,0 +1,42 @@
+#pragma once
+
+#include "config.h"
+#if MASK_VERSION == 0x091A
+
+#include "bau_systemB_coupler.h"
+#include "router_object.h"
+#include "ip_parameter_object.h"
+#include "ip_data_link_layer.h"
+#include "tpuart_data_link_layer.h"
+#include "cemi_server_object.h"
+
+class Bau091A : public BauSystemBCoupler, public ITpUartCallBacks, public DataLinkLayerCallbacks
+{
+    public:
+        Bau091A(Platform& platform);
+        void loop() override;
+        bool enabled() override;
+        void enabled(bool value) override;
+        bool configured() override;
+
+        IpDataLinkLayer* getPrimaryDataLinkLayer();
+        TpUartDataLinkLayer* getSecondaryDataLinkLayer();
+    protected:
+        InterfaceObject* getInterfaceObject(uint8_t idx);
+        InterfaceObject* getInterfaceObject(ObjectType objectType, uint16_t objectInstance);
+
+        // For TP1 only
+        TPAckType isAckRequired(uint16_t address, bool isGrpAddr) override;
+
+        void doMasterReset(EraseCode eraseCode, uint8_t channel) override;
+    private:
+        RouterObject _routerObj;
+        IpParameterObject _ipParameters;
+        IpDataLinkLayer _dlLayerPrimary;
+        TpUartDataLinkLayer _dlLayerSecondary;
+#ifdef USE_CEMI_SERVER
+        CemiServer _cemiServer;
+        CemiServerObject _cemiServerObject;
+#endif
+};
+#endif

components/knx/src/knx/bau27B0.cpp

@@ -0,0 +1,207 @@
+#include "config.h"
+#if MASK_VERSION == 0x27B0
+
+#include "bau27B0.h"
+#include "bits.h"
+#include <string.h>
+#include <stdio.h>
+
+using namespace std;
+
+Bau27B0::Bau27B0(Platform& platform)
+    : BauSystemBDevice(platform),
+      _dlLayer(_deviceObj, _rfMediumObj, _netLayer.getInterface(), _platform)
+#ifdef USE_CEMI_SERVER
+    , _cemiServer(*this)
+#endif
+{
+    _netLayer.getInterface().dataLinkLayer(_dlLayer);
+    _memory.addSaveRestore(&_rfMediumObj);
+#ifdef USE_CEMI_SERVER
+    _cemiServerObject.setMediumTypeAsSupported(DptMedium::KNX_RF);
+    _cemiServer.dataLinkLayer(_dlLayer);
+    _dlLayer.cemiServer(_cemiServer);
+    _memory.addSaveRestore(&_cemiServerObject);
+#endif
+
+    // Set Mask Version in Device Object depending on the BAU
+    _deviceObj.maskVersion(0x27B0);
+
+    // Set the maximum APDU length
+    // ETS will consider this value while programming the device
+    // For KNX-RF we use a smallest allowed value for now,
+    // although long frame are also supported by the implementation.
+    // Needs some experimentation.
+    _deviceObj.maxApduLength(15);
+
+    // Set which interface objects are available in the device object
+    // This differs from BAU to BAU with different medium types.
+    // See PID_IO_LIST
+    Property* prop = _deviceObj.property(PID_IO_LIST);
+    prop->write(1, (uint16_t) OT_DEVICE);
+    prop->write(2, (uint16_t) OT_ADDR_TABLE);
+    prop->write(3, (uint16_t) OT_ASSOC_TABLE);
+    prop->write(4, (uint16_t) OT_GRP_OBJ_TABLE);
+    prop->write(5, (uint16_t) OT_APPLICATION_PROG);
+    prop->write(6, (uint16_t) OT_RF_MEDIUM);
+#if defined(USE_DATASECURE) && defined(USE_CEMI_SERVER)
+    prop->write(7, (uint16_t) OT_SECURITY);
+    prop->write(8, (uint16_t) OT_CEMI_SERVER);
+#elif defined(USE_DATASECURE)
+    prop->write(7, (uint16_t) OT_SECURITY);
+#elif defined(USE_CEMI_SERVER)
+    prop->write(7, (uint16_t)OT_CEMI_SERVER);
+#endif
+}
+
+// see KNX AN160 p.74 for mask 27B0
+InterfaceObject* Bau27B0::getInterfaceObject(uint8_t idx)
+{
+    switch (idx)
+    {
+        case 0:
+            return &_deviceObj;
+
+        case 1:
+            return &_addrTable;
+
+        case 2:
+            return &_assocTable;
+
+        case 3:
+            return &_groupObjTable;
+
+        case 4:
+            return &_appProgram;
+
+        case 5: // would be app_program 2
+            return nullptr;
+
+        case 6:
+            return &_rfMediumObj;
+#if defined(USE_DATASECURE) && defined(USE_CEMI_SERVER)
+
+        case 7:
+            return &_secIfObj;
+
+        case 8:
+            return &_cemiServerObject;
+#elif defined(USE_CEMI_SERVER)
+
+        case 7:
+            return &_cemiServerObject;
+#elif defined(USE_DATASECURE)
+
+        case 7:
+            return &_secIfObj;
+#endif
+
+        default:
+            return nullptr;
+    }
+}
+
+InterfaceObject* Bau27B0::getInterfaceObject(ObjectType objectType, uint16_t objectInstance)
+{
+    // We do not use it right now.
+    // Required for coupler mode as there are multiple router objects for example
+    (void) objectInstance;
+
+    switch (objectType)
+    {
+        case OT_DEVICE:
+            return &_deviceObj;
+
+        case OT_ADDR_TABLE:
+            return &_addrTable;
+
+        case OT_ASSOC_TABLE:
+            return &_assocTable;
+
+        case OT_GRP_OBJ_TABLE:
+            return &_groupObjTable;
+
+        case OT_APPLICATION_PROG:
+            return &_appProgram;
+
+        case OT_RF_MEDIUM:
+            return &_rfMediumObj;
+#ifdef USE_DATASECURE
+
+        case OT_SECURITY:
+            return &_secIfObj;
+#endif
+#ifdef USE_CEMI_SERVER
+
+        case OT_CEMI_SERVER:
+            return &_cemiServerObject;
+#endif
+
+        default:
+            return nullptr;
+    }
+}
+
+void Bau27B0::doMasterReset(EraseCode eraseCode, uint8_t channel)
+{
+    // Common SystemB objects
+    BauSystemB::doMasterReset(eraseCode, channel);
+
+    _rfMediumObj.masterReset(eraseCode, channel);
+}
+
+bool Bau27B0::enabled()
+{
+    return _dlLayer.enabled();
+}
+
+void Bau27B0::enabled(bool value)
+{
+    _dlLayer.enabled(value);
+}
+
+void Bau27B0::loop()
+{
+    _dlLayer.loop();
+    BauSystemBDevice::loop();
+#ifdef USE_CEMI_SERVER
+    _cemiServer.loop();
+#endif
+}
+
+void Bau27B0::domainAddressSerialNumberWriteIndication(Priority priority, HopCountType hopType, const SecurityControl& secCtrl, const uint8_t* rfDoA,
+        const uint8_t* knxSerialNumber)
+{
+    // If the received serial number matches our serial number
+    // then store the received RF domain address in the RF medium object
+    if (!memcmp(knxSerialNumber, _deviceObj.propertyData(PID_SERIAL_NUMBER), 6))
+        _rfMediumObj.rfDomainAddress(rfDoA);
+}
+
+void Bau27B0::domainAddressSerialNumberReadIndication(Priority priority, HopCountType hopType, const SecurityControl& secCtrl, const uint8_t* knxSerialNumber)
+{
+    // If the received serial number matches our serial number
+    // then send a response with the current RF domain address stored in the RF medium object
+    if (!memcmp(knxSerialNumber, _deviceObj.propertyData(PID_SERIAL_NUMBER), 6))
+        _appLayer.domainAddressSerialNumberReadResponse(priority, hopType, secCtrl, _rfMediumObj.rfDomainAddress(), knxSerialNumber);
+}
+
+void Bau27B0::individualAddressSerialNumberReadIndication(Priority priority, HopCountType hopType, const SecurityControl& secCtrl, uint8_t* knxSerialNumber)
+{
+#pragma warning "individualAddressSerialNumberReadIndication is not available for rf"
+}
+
+void Bau27B0::domainAddressSerialNumberWriteLocalConfirm(Priority priority, HopCountType hopType, const SecurityControl& secCtrl, const uint8_t* rfDoA,
+        const uint8_t* knxSerialNumber, bool status)
+{
+}
+
+void Bau27B0::domainAddressSerialNumberReadLocalConfirm(Priority priority, HopCountType hopType, const SecurityControl& secCtrl, const uint8_t* knxSerialNumber, bool status)
+{
+}
+
+RfDataLinkLayer* Bau27B0::getDataLinkLayer()
+{
+    return (RfDataLinkLayer*)&_dlLayer;
+}
+#endif // #ifdef USE_RF

components/knx/src/knx/bau27B0.h

@@ -0,0 +1,47 @@
+#pragma once
+
+#include "config.h"
+#if MASK_VERSION == 0x27B0
+
+#include "bau_systemB_device.h"
+#include "rf_medium_object.h"
+#if defined(DeviceFamily_CC13X0)
+    #include "rf_physical_layer_cc1310.h"
+#else
+    #include "rf_physical_layer_cc1101.h"
+#endif
+#include "rf_data_link_layer.h"
+#include "cemi_server.h"
+#include "cemi_server_object.h"
+
+class Bau27B0 : public BauSystemBDevice
+{
+    public:
+        Bau27B0(Platform& platform);
+        void loop() override;
+        bool enabled() override;
+        void enabled(bool value) override;
+
+        RfDataLinkLayer* getDataLinkLayer();
+    protected:
+        InterfaceObject* getInterfaceObject(uint8_t idx);
+        InterfaceObject* getInterfaceObject(ObjectType objectType, uint16_t objectInstance);
+
+        void doMasterReset(EraseCode eraseCode, uint8_t channel) override;
+    private:
+        RfDataLinkLayer _dlLayer;
+        RfMediumObject _rfMediumObj;
+#ifdef USE_CEMI_SERVER
+        CemiServer _cemiServer;
+        CemiServerObject _cemiServerObject;
+#endif
+
+        void domainAddressSerialNumberWriteIndication(Priority priority, HopCountType hopType, const SecurityControl& secCtrl, const uint8_t* rfDoA,
+                const uint8_t* knxSerialNumber) override;
+        void domainAddressSerialNumberReadIndication(Priority priority, HopCountType hopType, const SecurityControl& secCtrl, const uint8_t* knxSerialNumber) override;
+        void individualAddressSerialNumberReadIndication(Priority priority, HopCountType hopType, const SecurityControl& secCtrl, uint8_t* knxSerialNumber) override;
+        void domainAddressSerialNumberWriteLocalConfirm(Priority priority, HopCountType hopType, const SecurityControl& secCtrl, const uint8_t* rfDoA,
+                const uint8_t* knxSerialNumber, bool status) override;
+        void domainAddressSerialNumberReadLocalConfirm(Priority priority, HopCountType hopType, const SecurityControl& secCtrl, const uint8_t* knxSerialNumber, bool status) override;
+};
+#endif

components/knx/src/knx/bau2920.cpp

@@ -0,0 +1,181 @@
+#include "config.h"
+#if MASK_VERSION == 0x2920
+
+#include "bau2920.h"
+#include "bits.h"
+#include <string.h>
+#include <stdio.h>
+
+using namespace std;
+
+// Mask 0x2920 uses coupler model 2.0
+Bau2920::Bau2920(Platform& platform)
+    : BauSystemBCoupler(platform),
+      _rtObjPrimary(memory()),
+      _rtObjSecondary(memory()),
+      _rfMediumObject(),
+      _dlLayerPrimary(_deviceObj, _netLayer.getPrimaryInterface(), _platform, (ITpUartCallBacks&) * this),
+      _dlLayerSecondary(_deviceObj, _rfMediumObject, _netLayer.getSecondaryInterface(), platform)
+#ifdef USE_CEMI_SERVER
+    ,
+      _cemiServer(*this)
+#endif
+{
+    // Before accessing anything of the two router objects they have to be initialized according to the used media combination
+    // Coupler model 2.0
+    _rtObjPrimary.initialize20(1, DptMedium::KNX_TP1, RouterObjectType::Primary, 201);
+    _rtObjSecondary.initialize20(2, DptMedium::KNX_RF, RouterObjectType::Secondary, 201);
+
+    _netLayer.rtObjPrimary(_rtObjPrimary);
+    _netLayer.rtObjSecondary(_rtObjSecondary);
+    _netLayer.getPrimaryInterface().dataLinkLayer(_dlLayerPrimary);
+    _netLayer.getSecondaryInterface().dataLinkLayer(_dlLayerSecondary);
+
+#ifdef USE_CEMI_SERVER
+    _cemiServerObject.setMediumTypeAsSupported(DptMedium::KNX_TP1);
+    _cemiServerObject.setMediumTypeAsSupported(DptMedium::KNX_RF);
+    _cemiServer.dataLinkLayer(_dlLayerSecondary); // Secondary I/F is the important one!
+    _dlLayerSecondary.cemiServer(_cemiServer);
+    _memory.addSaveRestore(&_cemiServerObject);
+#endif
+
+    _memory.addSaveRestore(&_rtObjPrimary);
+    _memory.addSaveRestore(&_rtObjSecondary);
+
+    _memory.addSaveRestore(&_rfMediumObject);
+
+    // Set Mask Version in Device Object depending on the BAU
+    _deviceObj.maskVersion(0x2920);
+
+    // Set which interface objects are available in the device object
+    // This differs from BAU to BAU with different medium types.
+    // See PID_IO_LIST
+    Property* prop = _deviceObj.property(PID_IO_LIST);
+    prop->write(1, (uint16_t) OT_DEVICE);
+    prop->write(2, (uint16_t) OT_ROUTER);
+    prop->write(3, (uint16_t) OT_ROUTER);
+    prop->write(4, (uint16_t) OT_APPLICATION_PROG);
+    prop->write(5, (uint16_t) OT_RF_MEDIUM);
+#if defined(USE_DATASECURE) && defined(USE_CEMI_SERVER)
+    prop->write(6, (uint16_t) OT_SECURITY);
+    prop->write(7, (uint16_t) OT_CEMI_SERVER);
+#elif defined(USE_DATASECURE)
+    prop->write(6, (uint16_t) OT_SECURITY);
+#elif defined(USE_CEMI_SERVER)
+    prop->write(6, (uint16_t) OT_CEMI_SERVER);
+#endif
+}
+
+InterfaceObject* Bau2920::getInterfaceObject(uint8_t idx)
+{
+    switch (idx)
+    {
+        case 0:
+            return &_deviceObj;
+
+        case 1:
+            return &_rtObjPrimary;
+
+        case 2:
+            return &_rtObjSecondary;
+
+        case 3:
+            return &_appProgram;
+
+        case 4:
+            return &_rfMediumObject;
+#if defined(USE_DATASECURE) && defined(USE_CEMI_SERVER)
+
+        case 5:
+            return &_secIfObj;
+
+        case 6:
+            return &_cemiServerObject;
+#elif defined(USE_CEMI_SERVER)
+
+        case 5:
+            return &_cemiServerObject;
+#elif defined(USE_DATASECURE)
+
+        case 5:
+            return &_secIfObj;
+#endif
+
+        default:
+            return nullptr;
+    }
+}
+
+InterfaceObject* Bau2920::getInterfaceObject(ObjectType objectType, uint16_t objectInstance)
+{
+    // We do not use it right now.
+    // Required for coupler mode as there are multiple router objects for example
+    (void) objectInstance;
+
+    switch (objectType)
+    {
+        case OT_DEVICE:
+            return &_deviceObj;
+
+        case OT_ROUTER:
+            return objectInstance == 0 ? &_rtObjPrimary : &_rtObjSecondary;
+
+        case OT_APPLICATION_PROG:
+            return &_appProgram;
+
+        case OT_RF_MEDIUM:
+            return &_rfMediumObject;
+#ifdef USE_DATASECURE
+
+        case OT_SECURITY:
+            return &_secIfObj;
+#endif
+#ifdef USE_CEMI_SERVER
+
+        case OT_CEMI_SERVER:
+            return &_cemiServerObject;
+#endif
+
+        default:
+            return nullptr;
+    }
+}
+
+void Bau2920::doMasterReset(EraseCode eraseCode, uint8_t channel)
+{
+    // Common SystemB objects
+    BauSystemBCoupler::doMasterReset(eraseCode, channel);
+
+    _rfMediumObject.masterReset(eraseCode, channel);
+    _rtObjPrimary.masterReset(eraseCode, channel);
+    _rtObjSecondary.masterReset(eraseCode, channel);
+}
+
+bool Bau2920::enabled()
+{
+    return _dlLayerPrimary.enabled() && _dlLayerSecondary.enabled();
+}
+
+void Bau2920::enabled(bool value)
+{
+    _dlLayerPrimary.enabled(value);
+    _dlLayerSecondary.enabled(value);
+}
+
+void Bau2920::loop()
+{
+    _dlLayerPrimary.loop();
+    _dlLayerSecondary.loop();
+    BauSystemBCoupler::loop();
+}
+
+TpUartDataLinkLayer* Bau2920::getPrimaryDataLinkLayer()
+{
+    return (TpUartDataLinkLayer*)&_dlLayerPrimary;
+}
+
+RfDataLinkLayer* Bau2920::getSecondaryDataLinkLayer()
+{
+    return (RfDataLinkLayer*)&_dlLayerSecondary;
+}
+#endif

components/knx/src/knx/bau2920.h

@@ -0,0 +1,43 @@
+#pragma once
+
+#include "config.h"
+#if MASK_VERSION == 0x2920
+
+#include "bau_systemB_coupler.h"
+#include "tpuart_data_link_layer.h"
+#if defined(DeviceFamily_CC13X0)
+    #include "rf_physical_layer_cc1310.h"
+#else
+    #include "rf_physical_layer_cc1101.h"
+#endif
+#include "rf_data_link_layer.h"
+#include "rf_medium_object.h"
+#include "cemi_server_object.h"
+
+class Bau2920 : public BauSystemBCoupler
+{
+    public:
+        Bau2920(Platform& platform);
+        void loop() override;
+        bool enabled() override;
+        void enabled(bool value) override;
+
+        TpUartDataLinkLayer* getPrimaryDataLinkLayer();
+        RfDataLinkLayer* getSecondaryDataLinkLayer();
+    protected:
+        InterfaceObject* getInterfaceObject(uint8_t idx);
+        InterfaceObject* getInterfaceObject(ObjectType objectType, uint16_t objectInstance);
+
+        void doMasterReset(EraseCode eraseCode, uint8_t channel) override;
+    private:
+        RouterObject _rtObjPrimary;
+        RouterObject _rtObjSecondary;
+        RfMediumObject _rfMediumObject;
+        TpUartDataLinkLayer _dlLayerPrimary;
+        RfDataLinkLayer _dlLayerSecondary;
+#ifdef USE_CEMI_SERVER
+        CemiServer _cemiServer;
+        CemiServerObject _cemiServerObject;
+#endif
+};
+#endif

components/knx/src/knx/bau57B0.cpp

@@ -0,0 +1,169 @@
+#include "config.h"
+#if MASK_VERSION == 0x57B0
+
+#include "bau57B0.h"
+#include "bits.h"
+#include <string.h>
+#include <stdio.h>
+
+using namespace std;
+
+Bau57B0::Bau57B0(Platform& platform)
+    : BauSystemBDevice(platform), DataLinkLayerCallbacks(),
+      _ipParameters(_deviceObj, platform),
+      _dlLayer(_deviceObj, _ipParameters, _netLayer.getInterface(), _platform, (DataLinkLayerCallbacks*) this)
+#ifdef USE_CEMI_SERVER
+    , _cemiServer(*this)
+#endif
+{
+    _netLayer.getInterface().dataLinkLayer(_dlLayer);
+#ifdef USE_CEMI_SERVER
+    _cemiServerObject.setMediumTypeAsSupported(DptMedium::KNX_IP);
+    _cemiServer.dataLinkLayer(_dlLayer);
+    _dlLayer.cemiServer(_cemiServer);
+    _memory.addSaveRestore(&_cemiServerObject);
+#endif
+    _memory.addSaveRestore(&_ipParameters);
+
+    // Set Mask Version in Device Object depending on the BAU
+    _deviceObj.maskVersion(0x57B0);
+
+    // Set which interface objects are available in the device object
+    // This differs from BAU to BAU with different medium types.
+    // See PID_IO_LIST
+    Property* prop = _deviceObj.property(PID_IO_LIST);
+    prop->write(1, (uint16_t) OT_DEVICE);
+    prop->write(2, (uint16_t) OT_ADDR_TABLE);
+    prop->write(3, (uint16_t) OT_ASSOC_TABLE);
+    prop->write(4, (uint16_t) OT_GRP_OBJ_TABLE);
+    prop->write(5, (uint16_t) OT_APPLICATION_PROG);
+    prop->write(6, (uint16_t) OT_IP_PARAMETER);
+#if defined(USE_DATASECURE) && defined(USE_CEMI_SERVER)
+    prop->write(7, (uint16_t) OT_SECURITY);
+    prop->write(8, (uint16_t) OT_CEMI_SERVER);
+#elif defined(USE_DATASECURE)
+    prop->write(7, (uint16_t) OT_SECURITY);
+#elif defined(USE_CEMI_SERVER)
+    prop->write(7, (uint16_t) OT_CEMI_SERVER);
+#endif
+}
+
+InterfaceObject* Bau57B0::getInterfaceObject(uint8_t idx)
+{
+    switch (idx)
+    {
+        case 0:
+            return &_deviceObj;
+
+        case 1:
+            return &_addrTable;
+
+        case 2:
+            return &_assocTable;
+
+        case 3:
+            return &_groupObjTable;
+
+        case 4:
+            return &_appProgram;
+
+        case 5: // would be app_program 2
+            return nullptr;
+
+        case 6:
+            return &_ipParameters;
+#if defined(USE_DATASECURE) && defined(USE_CEMI_SERVER)
+
+        case 7:
+            return &_secIfObj;
+
+        case 8:
+            return &_cemiServerObject;
+#elif defined(USE_CEMI_SERVER)
+
+        case 7:
+            return &_cemiServerObject;
+#elif defined(USE_DATASECURE)
+
+        case 7:
+            return &_secIfObj;
+#endif
+
+        default:
+            return nullptr;
+    }
+}
+
+InterfaceObject* Bau57B0::getInterfaceObject(ObjectType objectType, uint16_t objectInstance)
+{
+    // We do not use it right now.
+    // Required for coupler mode as there are multiple router objects for example
+    (void) objectInstance;
+
+    switch (objectType)
+    {
+        case OT_DEVICE:
+            return &_deviceObj;
+
+        case OT_ADDR_TABLE:
+            return &_addrTable;
+
+        case OT_ASSOC_TABLE:
+            return &_assocTable;
+
+        case OT_GRP_OBJ_TABLE:
+            return &_groupObjTable;
+
+        case OT_APPLICATION_PROG:
+            return &_appProgram;
+
+        case OT_IP_PARAMETER:
+            return &_ipParameters;
+#ifdef USE_DATASECURE
+
+        case OT_SECURITY:
+            return &_secIfObj;
+#endif
+#ifdef USE_CEMI_SERVER
+
+        case OT_CEMI_SERVER:
+            return &_cemiServerObject;
+#endif
+
+        default:
+            return nullptr;
+    }
+}
+
+void Bau57B0::doMasterReset(EraseCode eraseCode, uint8_t channel)
+{
+    // Common SystemB objects
+    BauSystemB::doMasterReset(eraseCode, channel);
+
+    _ipParameters.masterReset(eraseCode, channel);
+}
+
+bool Bau57B0::enabled()
+{
+    return _dlLayer.enabled();
+}
+
+void Bau57B0::enabled(bool value)
+{
+    _dlLayer.enabled(value);
+}
+
+void Bau57B0::loop()
+{
+    _dlLayer.loop();
+    BauSystemBDevice::loop();
+#ifdef USE_CEMI_SERVER
+    _cemiServer.loop();
+#endif
+}
+
+IpDataLinkLayer* Bau57B0::getDataLinkLayer()
+{
+    return (IpDataLinkLayer*)&_dlLayer;
+}
+#endif

components/knx/src/knx/bau57B0.h

@@ -0,0 +1,33 @@
+#pragma once
+
+#include "config.h"
+#if MASK_VERSION == 0x57B0
+
+#include "bau_systemB_device.h"
+#include "ip_parameter_object.h"
+#include "ip_data_link_layer.h"
+#include "cemi_server_object.h"
+
+class Bau57B0 : public BauSystemBDevice, public DataLinkLayerCallbacks
+{
+    public:
+        Bau57B0(Platform& platform);
+        void loop() override;
+        bool enabled() override;
+        void enabled(bool value) override;
+
+        IpDataLinkLayer* getDataLinkLayer();
+    protected:
+        InterfaceObject* getInterfaceObject(uint8_t idx);
+        InterfaceObject* getInterfaceObject(ObjectType objectType, uint16_t objectInstance);
+
+        void doMasterReset(EraseCode eraseCode, uint8_t channel) override;
+    private:
+        IpParameterObject _ipParameters;
+        IpDataLinkLayer _dlLayer;
+#ifdef USE_CEMI_SERVER
+        CemiServer _cemiServer;
+        CemiServerObject _cemiServerObject;
+#endif
+};
+#endif

components/knx/src/knx/bau_systemB.cpp

@@ -0,0 +1,812 @@
+#include "bau_systemB.h"
+#include "bits.h"
+#include <string.h>
+#include <stdio.h>
+
+enum NmReadSerialNumberType
+{
+    NM_Read_SerialNumber_By_ProgrammingMode = 0x01,
+    NM_Read_SerialNumber_By_ExFactoryState = 0x02,
+    NM_Read_SerialNumber_By_PowerReset = 0x03,
+    NM_Read_SerialNumber_By_ManufacturerSpecific = 0xFE,
+};
+
+static constexpr auto kFunctionPropertyResultBufferMaxSize = 0xFF;
+static constexpr auto kRestartProcessTime = 3;
+
+BauSystemB::BauSystemB(Platform& platform): _memory(platform, _deviceObj),
+    _appProgram(_memory),
+    _platform(platform)
+{
+    _memory.addSaveRestore(&_appProgram);
+}
+
+void BauSystemB::readMemory()
+{
+    _memory.readMemory();
+}
+
+void BauSystemB::writeMemory()
+{
+    _memory.writeMemory();
+}
+
+Platform& BauSystemB::platform()
+{
+    return _platform;
+}
+
+ApplicationProgramObject& BauSystemB::parameters()
+{
+    return _appProgram;
+}
+
+DeviceObject& BauSystemB::deviceObject()
+{
+    return _deviceObj;
+}
+
+uint8_t BauSystemB::checkmasterResetValidity(EraseCode eraseCode, uint8_t channel)
+{
+    static constexpr uint8_t successCode = 0x00; // Where does this come from? It is the code for "success".
+    static constexpr uint8_t invalidEraseCode = 0x02; // Where does this come from? It is the error code for "unspported erase code".
+
+    switch (eraseCode)
+    {
+        case EraseCode::ConfirmedRestart:
+        {
+            println("Confirmed restart requested.");
+            return successCode;
+        }
+
+        case EraseCode::ResetAP:
+        {
+            // TODO: increase download counter except for confirmed restart (PID_DOWNLOAD_COUNTER)
+            println("ResetAP requested. Not implemented yet.");
+            return successCode;
+        }
+
+        case EraseCode::ResetIA:
+        {
+            // TODO: increase download counter except for confirmed restart (PID_DOWNLOAD_COUNTER)
+            println("ResetIA requested. Not implemented yet.");
+            return successCode;
+        }
+
+        case EraseCode::ResetLinks:
+        {
+            // TODO: increase download counter except for confirmed restart (PID_DOWNLOAD_COUNTER)
+            println("ResetLinks requested. Not implemented yet.");
+            return successCode;
+        }
+
+        case EraseCode::ResetParam:
+        {
+            // TODO: increase download counter except for confirmed restart (PID_DOWNLOAD_COUNTER)
+            println("ResetParam requested. Not implemented yet.");
+            return successCode;
+        }
+
+        case EraseCode::FactoryReset:
+        {
+            // TODO: increase download counter except for confirmed restart (PID_DOWNLOAD_COUNTER)
+            println("Factory reset requested. type: with IA");
+            return successCode;
+        }
+
+        case EraseCode::FactoryResetWithoutIA:
+        {
+            // TODO: increase download counter except for confirmed restart (PID_DOWNLOAD_COUNTER)
+            println("Factory reset requested. type: without IA");
+            return successCode;
+        }
+
+        default:
+        {
+            print("Unhandled erase code: ");
+            println(eraseCode, HEX);
+            return invalidEraseCode;
+        }
+    }
+}
+
+void BauSystemB::deviceDescriptorReadIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t descriptorType)
+{
+    if (descriptorType != 0)
+        descriptorType = 0x3f;
+
+    uint8_t data[2];
+    pushWord(_deviceObj.maskVersion(), data);
+    applicationLayer().deviceDescriptorReadResponse(AckRequested, priority, hopType, asap, secCtrl, descriptorType, data);
+}
+void BauSystemB::memoryRouterWriteIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
+        uint16_t memoryAddress, uint8_t* data)
+{
+    print("Writing memory at: ");
+    print(memoryAddress, HEX);
+    print(" length: ");
+    print(number);
+    print(" data: ");
+    printHex("=>", data, number);
+    _memory.writeMemory(memoryAddress, number, data);
+
+    if (_deviceObj.verifyMode())
+    {
+        print("Sending Read indication");
+        memoryRouterReadIndication(priority, hopType, asap, secCtrl, number, memoryAddress, data);
+    }
+}
+
+void BauSystemB::memoryRouterReadIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
+        uint16_t memoryAddress, uint8_t* data)
+{
+    applicationLayer().memoryRouterReadResponse(AckRequested, priority, hopType, asap, secCtrl, number, memoryAddress, data);
+}
+
+void BauSystemB::memoryRoutingTableReadIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number, uint16_t memoryAddress, uint8_t* data)
+{
+    applicationLayer().memoryRoutingTableReadResponse(AckRequested, priority, hopType, asap, secCtrl, number, memoryAddress, data);
+}
+void BauSystemB::memoryRoutingTableReadIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number, uint16_t memoryAddress)
+{
+    memoryRoutingTableReadIndication(priority, hopType, asap, secCtrl, number, memoryAddress, _memory.toAbsolute(memoryAddress));
+}
+
+void BauSystemB::memoryRoutingTableWriteIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number, uint16_t memoryAddress, uint8_t* data)
+{
+    print("Writing memory at: ");
+    print(memoryAddress, HEX);
+    print(" length: ");
+    print(number);
+    print(" data: ");
+    printHex("=>", data, number);
+    _memory.writeMemory(memoryAddress, number, data);
+
+    if (_deviceObj.verifyMode())
+        memoryRoutingTableReadIndication(priority, hopType, asap, secCtrl, number, memoryAddress, data);
+}
+
+void BauSystemB::memoryWriteIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
+                                       uint16_t memoryAddress, uint8_t* data)
+{
+    _memory.writeMemory(memoryAddress, number, data);
+
+    if (_deviceObj.verifyMode())
+        memoryReadIndication(priority, hopType, asap, secCtrl, number, memoryAddress, data);
+}
+
+void BauSystemB::memoryReadIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
+                                      uint16_t memoryAddress, uint8_t* data)
+{
+    applicationLayer().memoryReadResponse(AckRequested, priority, hopType, asap, secCtrl, number, memoryAddress, data);
+}
+
+void BauSystemB::memoryReadIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
+                                      uint16_t memoryAddress)
+{
+    applicationLayer().memoryReadResponse(AckRequested, priority, hopType, asap, secCtrl, number, memoryAddress,
+                                          _memory.toAbsolute(memoryAddress));
+}
+
+void BauSystemB::memoryExtWriteIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number, uint32_t memoryAddress, uint8_t* data)
+{
+    _memory.writeMemory(memoryAddress, number, data);
+
+    applicationLayer().memoryExtWriteResponse(AckRequested, priority, hopType, asap, secCtrl, ReturnCodes::Success, number, memoryAddress, _memory.toAbsolute(memoryAddress));
+}
+
+void BauSystemB::memoryExtReadIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number, uint32_t memoryAddress)
+{
+    applicationLayer().memoryExtReadResponse(AckRequested, priority, hopType, asap, secCtrl, ReturnCodes::Success, number, memoryAddress, _memory.toAbsolute(memoryAddress));
+}
+
+void BauSystemB::doMasterReset(EraseCode eraseCode, uint8_t channel)
+{
+    _deviceObj.masterReset(eraseCode, channel);
+    _appProgram.masterReset(eraseCode, channel);
+}
+
+void BauSystemB::restartRequestIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, RestartType restartType, EraseCode eraseCode, uint8_t channel)
+{
+    if (restartType == RestartType::BasicRestart)
+    {
+        println("Basic restart requested");
+
+        if (_beforeRestart != 0)
+            _beforeRestart();
+    }
+    else if (restartType == RestartType::MasterReset)
+    {
+        uint8_t errorCode = checkmasterResetValidity(eraseCode, channel);
+        // We send the restart response now before actually applying the reset values
+        // Processing time is kRestartProcessTime (example 3 seconds) that we require for the applying the master reset with restart
+        applicationLayer().restartResponse(AckRequested, priority, hopType, secCtrl, errorCode, (errorCode == 0) ? kRestartProcessTime : 0);
+        doMasterReset(eraseCode, channel);
+    }
+    else
+    {
+        // Cannot happen as restartType is just one bit
+        println("Unhandled restart type.");
+        _platform.fatalError();
+    }
+
+    // Flush the EEPROM before resetting
+    _memory.writeMemory();
+    _platform.restart();
+}
+
+void BauSystemB::authorizeIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint32_t key)
+{
+    applicationLayer().authorizeResponse(AckRequested, priority, hopType, asap, secCtrl, 0);
+}
+
+void BauSystemB::userMemoryReadIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number, uint32_t memoryAddress)
+{
+    applicationLayer().userMemoryReadResponse(AckRequested, priority, hopType, asap, secCtrl, number, memoryAddress,
+            _memory.toAbsolute(memoryAddress));
+}
+
+void BauSystemB::userMemoryWriteIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number, uint32_t memoryAddress, uint8_t* data)
+{
+    _memory.writeMemory(memoryAddress, number, data);
+
+    if (_deviceObj.verifyMode())
+        userMemoryReadIndication(priority, hopType, asap, secCtrl, number, memoryAddress);
+}
+
+void BauSystemB::propertyDescriptionReadIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t objectIndex,
+        uint8_t propertyId, uint8_t propertyIndex)
+{
+    uint8_t pid = propertyId;
+    bool writeEnable = false;
+    uint8_t type = 0;
+    uint16_t numberOfElements = 0;
+    uint8_t access = 0;
+    InterfaceObject* obj = getInterfaceObject(objectIndex);
+
+    if (obj)
+        obj->readPropertyDescription(pid, propertyIndex, writeEnable, type, numberOfElements, access);
+
+    applicationLayer().propertyDescriptionReadResponse(AckRequested, priority, hopType, asap, secCtrl, objectIndex, pid, propertyIndex,
+            writeEnable, type, numberOfElements, access);
+}
+
+void BauSystemB::propertyExtDescriptionReadIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl,
+        uint16_t objectType, uint16_t objectInstance, uint16_t propertyId, uint8_t descriptionType, uint16_t propertyIndex)
+{
+    uint8_t pid = propertyId;
+    uint8_t pidx = propertyIndex;
+
+    if (propertyId > 0xFF || propertyIndex > 0xFF)
+    {
+        println("BauSystemB::propertyExtDescriptionReadIndication: propertyId or Idx > 256 are not supported");
+        return;
+    }
+
+    if (descriptionType != 0)
+    {
+        println("BauSystemB::propertyExtDescriptionReadIndication: only descriptionType 0 supported");
+        return;
+    }
+
+    bool writeEnable = false;
+    uint8_t type = 0;
+    uint16_t numberOfElements = 0;
+    uint8_t access = 0;
+    InterfaceObject* obj = getInterfaceObject((ObjectType)objectType, objectInstance);
+
+    if (obj)
+        obj->readPropertyDescription(pid, pidx, writeEnable, type, numberOfElements, access);
+
+    applicationLayer().propertyExtDescriptionReadResponse(AckRequested, priority, hopType, asap, secCtrl, objectType, objectInstance, propertyId, propertyIndex,
+            descriptionType, writeEnable, type, numberOfElements, access);
+}
+
+void BauSystemB::propertyValueWriteIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t objectIndex,
+        uint8_t propertyId, uint8_t numberOfElements, uint16_t startIndex, uint8_t* data, uint8_t length)
+{
+    InterfaceObject* obj = getInterfaceObject(objectIndex);
+
+    if (obj)
+        obj->writeProperty((PropertyID)propertyId, startIndex, data, numberOfElements);
+
+    propertyValueReadIndication(priority, hopType, asap, secCtrl, objectIndex, propertyId, numberOfElements, startIndex);
+}
+
+void BauSystemB::propertyValueExtWriteIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, ObjectType objectType, uint8_t objectInstance,
+        uint8_t propertyId, uint8_t numberOfElements, uint16_t startIndex, uint8_t* data, uint8_t length, bool confirmed)
+{
+    uint8_t returnCode = ReturnCodes::Success;
+
+    InterfaceObject* obj = getInterfaceObject(objectType, objectInstance);
+
+    if (obj)
+        obj->writeProperty((PropertyID)propertyId, startIndex, data, numberOfElements);
+    else
+        returnCode = ReturnCodes::AddressVoid;
+
+    if (confirmed)
+    {
+        applicationLayer().propertyValueExtWriteConResponse(AckRequested, priority, hopType, asap, secCtrl, objectType, objectInstance, propertyId, numberOfElements, startIndex, returnCode);
+    }
+}
+
+void BauSystemB::propertyValueReadIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t objectIndex,
+        uint8_t propertyId, uint8_t numberOfElements, uint16_t startIndex)
+{
+    uint8_t size = 0;
+    uint8_t elementCount = numberOfElements;
+#ifdef LOG_KNX_PROP
+    print("propertyValueReadIndication: ObjIdx ");
+    print(objectIndex);
+    print(" propId ");
+    print(propertyId);
+    print(" num ");
+    print(numberOfElements);
+    print(" start ");
+    print(startIndex);
+#endif
+
+    InterfaceObject* obj = getInterfaceObject(objectIndex);
+
+    if (obj)
+    {
+        uint8_t elementSize = obj->propertySize((PropertyID)propertyId);
+
+        if (startIndex > 0)
+            size = elementSize * numberOfElements;
+        else
+            size = sizeof(uint16_t); // size of property array entry 0 which contains the current number of elements
+    }
+    else
+        elementCount = 0;
+
+    uint8_t data[size];
+
+    if (obj)
+        obj->readProperty((PropertyID)propertyId, startIndex, elementCount, data);
+
+    if (elementCount == 0)
+        size = 0;
+
+    applicationLayer().propertyValueReadResponse(AckRequested, priority, hopType, asap, secCtrl, objectIndex, propertyId, elementCount,
+            startIndex, data, size);
+}
+
+void BauSystemB::propertyValueExtReadIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, ObjectType objectType, uint8_t objectInstance,
+        uint8_t propertyId, uint8_t numberOfElements, uint16_t startIndex)
+{
+    uint8_t size = 0;
+    uint8_t elementCount = numberOfElements;
+    InterfaceObject* obj = getInterfaceObject(objectType, objectInstance);
+
+    if (obj)
+    {
+        uint8_t elementSize = obj->propertySize((PropertyID)propertyId);
+
+        if (startIndex > 0)
+            size = elementSize * numberOfElements;
+        else
+            size = sizeof(uint16_t); // size of propert array entry 0 which is the size
+    }
+    else
+        elementCount = 0;
+
+    uint8_t data[size];
+
+    if (obj)
+        obj->readProperty((PropertyID)propertyId, startIndex, elementCount, data);
+
+    if (elementCount == 0)
+        size = 0;
+
+    applicationLayer().propertyValueExtReadResponse(AckRequested, priority, hopType, asap, secCtrl, objectType, objectInstance, propertyId, elementCount,
+            startIndex, data, size);
+}
+
+void BauSystemB::functionPropertyCommandIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t objectIndex,
+        uint8_t propertyId, uint8_t* data, uint8_t length)
+{
+    uint8_t resultData[kFunctionPropertyResultBufferMaxSize];
+    uint8_t resultLength = sizeof(resultData); // tell the callee the maximum size of the buffer
+
+    bool handled = false;
+
+    InterfaceObject* obj = getInterfaceObject(objectIndex);
+
+    if (obj)
+    {
+        if (obj->property((PropertyID)propertyId)->Type() == PDT_FUNCTION)
+        {
+            obj->command((PropertyID)propertyId, data, length, resultData, resultLength);
+            handled = true;
+        }
+        else
+        {
+            if (_functionProperty != 0)
+                if (_functionProperty(objectIndex, propertyId, length, data, resultData, resultLength))
+                    handled = true;
+        }
+    }
+    else
+    {
+        if (_functionProperty != 0)
+            if (_functionProperty(objectIndex, propertyId, length, data, resultData, resultLength))
+                handled = true;
+    }
+
+    //only return a value it was handled by a property or function
+    if (handled)
+        applicationLayer().functionPropertyStateResponse(AckRequested, priority, hopType, asap, secCtrl, objectIndex, propertyId, resultData, resultLength);
+}
+
+void BauSystemB::functionPropertyStateIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t objectIndex,
+        uint8_t propertyId, uint8_t* data, uint8_t length)
+{
+    uint8_t resultData[kFunctionPropertyResultBufferMaxSize];
+    uint8_t resultLength = sizeof(resultData); // tell the callee the maximum size of the buffer
+
+    bool handled = true;
+
+    InterfaceObject* obj = getInterfaceObject(objectIndex);
+
+    if (obj)
+    {
+        if (obj->property((PropertyID)propertyId)->Type() == PDT_FUNCTION)
+        {
+            obj->state((PropertyID)propertyId, data, length, resultData, resultLength);
+            handled = true;
+        }
+        else
+        {
+            if (_functionPropertyState != 0)
+                if (_functionPropertyState(objectIndex, propertyId, length, data, resultData, resultLength))
+                    handled = true;
+        }
+    }
+    else
+    {
+        if (_functionPropertyState != 0)
+            if (_functionPropertyState(objectIndex, propertyId, length, data, resultData, resultLength))
+                handled = true;
+    }
+
+    //only return a value it was handled by a property or function
+    if (handled)
+        applicationLayer().functionPropertyStateResponse(AckRequested, priority, hopType, asap, secCtrl, objectIndex, propertyId, resultData, resultLength);
+}
+
+void BauSystemB::functionPropertyExtCommandIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, ObjectType objectType, uint8_t objectInstance,
+        uint8_t propertyId, uint8_t* data, uint8_t length)
+{
+    uint8_t resultData[kFunctionPropertyResultBufferMaxSize];
+    uint8_t resultLength = 1; // we always have to include the return code at least
+
+    InterfaceObject* obj = getInterfaceObject(objectType, objectInstance);
+
+    if (obj)
+    {
+        PropertyDataType propType = obj->property((PropertyID)propertyId)->Type();
+
+        if (propType == PDT_FUNCTION)
+        {
+            // The first byte is reserved and 0 for PDT_FUNCTION
+            uint8_t reservedByte = data[0];
+
+            if (reservedByte != 0x00)
+            {
+                resultData[0] = ReturnCodes::DataVoid;
+            }
+            else
+            {
+                resultLength = sizeof(resultData); // tell the callee the maximum size of the buffer
+                obj->command((PropertyID)propertyId, data, length, resultData, resultLength);
+                // resultLength was modified by the callee
+            }
+        }
+        else if (propType == PDT_CONTROL)
+        {
+            uint8_t count = 1;
+            // write the event
+            obj->writeProperty((PropertyID)propertyId, 1, data, count);
+
+            if (count == 1)
+            {
+                // Read the current state (one byte only) for the response
+                obj->readProperty((PropertyID)propertyId, 1, count, &resultData[1]);
+                resultLength = count ? 2 : 1;
+                resultData[0] = count ? ReturnCodes::Success : ReturnCodes::DataVoid;
+            }
+            else
+            {
+                resultData[0] = ReturnCodes::AddressVoid;
+            }
+        }
+        else
+        {
+            resultData[0] = ReturnCodes::DataTypeConflict;
+        }
+    }
+    else
+    {
+        resultData[0] = ReturnCodes::GenericError;
+    }
+
+    applicationLayer().functionPropertyExtStateResponse(AckRequested, priority, hopType, asap, secCtrl, objectType, objectInstance, propertyId, resultData, resultLength);
+}
+
+void BauSystemB::functionPropertyExtStateIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, ObjectType objectType, uint8_t objectInstance,
+        uint8_t propertyId, uint8_t* data, uint8_t length)
+{
+    uint8_t resultData[kFunctionPropertyResultBufferMaxSize];
+    uint8_t resultLength = sizeof(resultData); // tell the callee the maximum size of the buffer
+
+    InterfaceObject* obj = getInterfaceObject(objectType, objectInstance);
+
+    if (obj)
+    {
+        PropertyDataType propType = obj->property((PropertyID)propertyId)->Type();
+
+        if (propType == PDT_FUNCTION)
+        {
+            // The first byte is reserved and 0 for PDT_FUNCTION
+            uint8_t reservedByte = data[0];
+
+            if (reservedByte != 0x00)
+            {
+                resultData[0] = ReturnCodes::DataVoid;
+            }
+            else
+            {
+                resultLength = sizeof(resultData); // tell the callee the maximum size of the buffer
+                obj->state((PropertyID)propertyId, data, length, resultData, resultLength);
+                // resultLength was modified by the callee
+            }
+        }
+        else if (propType == PDT_CONTROL)
+        {
+            uint8_t count = 1;
+            // Read the current state (one byte only) for the response
+            obj->readProperty((PropertyID)propertyId, 1, count, &resultData[1]);
+            resultLength = count ? 2 : 1;
+            resultData[0] = count ? ReturnCodes::Success : ReturnCodes::DataVoid;
+        }
+        else
+        {
+            resultData[0] = ReturnCodes::DataTypeConflict;
+        }
+    }
+    else
+    {
+        resultData[0] = ReturnCodes::GenericError;
+    }
+
+    applicationLayer().functionPropertyExtStateResponse(AckRequested, priority, hopType, asap, secCtrl, objectType, objectInstance, propertyId, resultData, resultLength);
+}
+
+void BauSystemB::individualAddressReadIndication(HopCountType hopType, const SecurityControl& secCtrl)
+{
+    if (_deviceObj.progMode())
+        applicationLayer().individualAddressReadResponse(AckRequested, hopType, secCtrl);
+}
+
+void BauSystemB::individualAddressWriteIndication(HopCountType hopType, const SecurityControl& secCtrl, uint16_t newaddress)
+{
+    if (_deviceObj.progMode())
+        _deviceObj.individualAddress(newaddress);
+}
+
+void BauSystemB::individualAddressSerialNumberWriteIndication(Priority priority, HopCountType hopType, const SecurityControl& secCtrl, uint16_t newIndividualAddress,
+        uint8_t* knxSerialNumber)
+{
+    // If the received serial number matches our serial number
+    // then store the received new individual address in the device object
+    if (!memcmp(knxSerialNumber, _deviceObj.propertyData(PID_SERIAL_NUMBER), 6))
+        _deviceObj.individualAddress(newIndividualAddress);
+}
+
+void BauSystemB::individualAddressSerialNumberReadIndication(Priority priority, HopCountType hopType, const SecurityControl& secCtrl, uint8_t* knxSerialNumber)
+{
+    // If the received serial number matches our serial number
+    // then send a response with the serial number. The domain address is set to 0 for closed media.
+    // An open medium BAU has to override this method and provide a proper domain address.
+    if (!memcmp(knxSerialNumber, _deviceObj.propertyData(PID_SERIAL_NUMBER), 6))
+    {
+        uint8_t emptyDomainAddress[2] = {0x00};
+        applicationLayer().IndividualAddressSerialNumberReadResponse(priority, hopType, secCtrl, emptyDomainAddress, knxSerialNumber);
+    }
+}
+
+void BauSystemB::addSaveRestore(SaveRestore* obj)
+{
+    _memory.addSaveRestore(obj);
+}
+
+bool BauSystemB::restartRequest(uint16_t asap, const SecurityControl secCtrl)
+{
+    if (applicationLayer().isConnected())
+        return false;
+
+    _restartState = Connecting; // order important, has to be set BEFORE connectRequest
+    _restartSecurity = secCtrl;
+    applicationLayer().connectRequest(asap, SystemPriority);
+    applicationLayer().deviceDescriptorReadRequest(AckRequested, SystemPriority, NetworkLayerParameter, asap, secCtrl, 0);
+    return true;
+}
+
+void BauSystemB::connectConfirm(uint16_t tsap)
+{
+    if (_restartState == Connecting)
+    {
+        /* restart connection is confirmed, go to the next state */
+        _restartState = Connected;
+        _restartDelay = millis();
+    }
+    else
+    {
+        _restartState = Idle;
+    }
+}
+
+void BauSystemB::nextRestartState()
+{
+    switch (_restartState)
+    {
+        case Idle:
+            /* inactive state, do nothing */
+            break;
+
+        case Connecting:
+            /* wait for connection, we do nothing here */
+            break;
+
+        case Connected:
+
+            /* connection confirmed, we send restartRequest, but we wait a moment (sending ACK etc)... */
+            if (millis() - _restartDelay > 30)
+            {
+                applicationLayer().restartRequest(AckRequested, SystemPriority, NetworkLayerParameter, _restartSecurity);
+                _restartState = Restarted;
+                _restartDelay = millis();
+            }
+
+            break;
+
+        case Restarted:
+
+            /* restart is finished, we send a disconnect */
+            if (millis() - _restartDelay > 30)
+            {
+                applicationLayer().disconnectRequest(SystemPriority);
+                _restartState = Idle;
+            }
+
+        default:
+            break;
+    }
+}
+
+void BauSystemB::systemNetworkParameterReadIndication(Priority priority, HopCountType hopType, const SecurityControl& secCtrl, uint16_t objectType,
+        uint16_t propertyId, uint8_t* testInfo, uint16_t testInfoLength)
+{
+    uint8_t operand;
+
+    popByte(operand, testInfo + 1); // First byte (+ 0) contains only 4 reserved bits (0)
+
+    // See KNX spec. 3.5.2 p.33 (Management Procedures: Procedures with A_SystemNetworkParameter_Read)
+    switch ((NmReadSerialNumberType)operand)
+    {
+        case NM_Read_SerialNumber_By_ProgrammingMode: // NM_Read_SerialNumber_By_ProgrammingMode
+
+            // Only send a reply if programming mode is on
+            if (_deviceObj.progMode() && (objectType == OT_DEVICE) && (propertyId == PID_SERIAL_NUMBER))
+            {
+                // Send reply. testResult data is KNX serial number
+                applicationLayer().systemNetworkParameterReadResponse(priority, hopType, secCtrl, objectType, propertyId,
+                        testInfo, testInfoLength, (uint8_t*)_deviceObj.propertyData(PID_SERIAL_NUMBER), 6);
+            }
+
+            break;
+
+        case NM_Read_SerialNumber_By_ExFactoryState: // NM_Read_SerialNumber_By_ExFactoryState
+            break;
+
+        case NM_Read_SerialNumber_By_PowerReset: // NM_Read_SerialNumber_By_PowerReset
+            break;
+
+        case NM_Read_SerialNumber_By_ManufacturerSpecific: // Manufacturer specific use of A_SystemNetworkParameter_Read
+            break;
+    }
+}
+
+void BauSystemB::systemNetworkParameterReadLocalConfirm(Priority priority, HopCountType hopType, const SecurityControl& secCtrl, uint16_t objectType,
+        uint16_t propertyId, uint8_t* testInfo, uint16_t testInfoLength, bool status)
+{
+}
+
+void BauSystemB::propertyValueRead(ObjectType objectType, uint8_t objectInstance, uint8_t propertyId,
+                                   uint8_t& numberOfElements, uint16_t startIndex,
+                                   uint8_t** data, uint32_t& length)
+{
+    uint32_t size = 0;
+    uint8_t elementCount = numberOfElements;
+
+    InterfaceObject* obj = getInterfaceObject(objectType, objectInstance);
+
+    if (obj)
+    {
+        uint8_t elementSize = obj->propertySize((PropertyID)propertyId);
+
+        if (startIndex > 0)
+            size = elementSize * numberOfElements;
+        else
+            size = sizeof(uint16_t); // size of property array entry 0 which contains the current number of elements
+
+        *data = new uint8_t [size];
+        obj->readProperty((PropertyID)propertyId, startIndex, elementCount, *data);
+    }
+    else
+    {
+        elementCount = 0;
+        *data = nullptr;
+    }
+
+    numberOfElements = elementCount;
+    length = size;
+}
+
+void BauSystemB::propertyValueWrite(ObjectType objectType, uint8_t objectInstance, uint8_t propertyId,
+                                    uint8_t& numberOfElements, uint16_t startIndex,
+                                    uint8_t* data, uint32_t length)
+{
+    InterfaceObject* obj =  getInterfaceObject(objectType, objectInstance);
+
+    if (obj)
+        obj->writeProperty((PropertyID)propertyId, startIndex, data, numberOfElements);
+    else
+        numberOfElements = 0;
+}
+
+Memory& BauSystemB::memory()
+{
+    return _memory;
+}
+
+void BauSystemB::versionCheckCallback(VersionCheckCallback func)
+{
+    _memory.versionCheckCallback(func);
+}
+
+VersionCheckCallback BauSystemB::versionCheckCallback()
+{
+    return _memory.versionCheckCallback();
+}
+
+void BauSystemB::beforeRestartCallback(BeforeRestartCallback func)
+{
+    _beforeRestart = func;
+}
+
+BeforeRestartCallback BauSystemB::beforeRestartCallback()
+{
+    return _beforeRestart;
+}
+
+void BauSystemB::functionPropertyCallback(FunctionPropertyCallback func)
+{
+    _functionProperty = func;
+}
+
+FunctionPropertyCallback BauSystemB::functionPropertyCallback()
+{
+    return _functionProperty;
+}
+void BauSystemB::functionPropertyStateCallback(FunctionPropertyCallback func)
+{
+    _functionPropertyState = func;
+}
+
+FunctionPropertyCallback BauSystemB::functionPropertyStateCallback()
+{
+    return _functionPropertyState;
+}

components/knx/src/knx/bau_systemB.h

@@ -0,0 +1,133 @@
+#pragma once
+
+#include "config.h"
+#include "bau.h"
+#include "security_interface_object.h"
+#include "application_program_object.h"
+#include "application_layer.h"
+#include "secure_application_layer.h"
+#include "transport_layer.h"
+#include "network_layer.h"
+#include "data_link_layer.h"
+#include "platform.h"
+#include "memory.h"
+
+class BauSystemB : protected BusAccessUnit
+{
+    public:
+        BauSystemB(Platform& platform);
+        virtual void loop() = 0;
+        virtual bool configured() = 0;
+        virtual bool enabled() = 0;
+        virtual void enabled(bool value) = 0;
+
+        Platform& platform();
+        ApplicationProgramObject& parameters();
+        DeviceObject& deviceObject();
+
+        Memory& memory();
+        void readMemory();
+        void writeMemory();
+        void addSaveRestore(SaveRestore* obj);
+
+        bool restartRequest(uint16_t asap, const SecurityControl secCtrl);
+        uint8_t checkmasterResetValidity(EraseCode eraseCode, uint8_t channel);
+
+        void propertyValueRead(ObjectType objectType, uint8_t objectInstance, uint8_t propertyId,
+                               uint8_t& numberOfElements, uint16_t startIndex,
+                               uint8_t** data, uint32_t& length) override;
+        void propertyValueWrite(ObjectType objectType, uint8_t objectInstance, uint8_t propertyId,
+                                uint8_t& numberOfElements, uint16_t startIndex,
+                                uint8_t* data, uint32_t length) override;
+        void versionCheckCallback(VersionCheckCallback func);
+        VersionCheckCallback versionCheckCallback();
+        void beforeRestartCallback(BeforeRestartCallback func);
+        BeforeRestartCallback beforeRestartCallback();
+        void functionPropertyCallback(FunctionPropertyCallback func);
+        FunctionPropertyCallback functionPropertyCallback();
+        void functionPropertyStateCallback(FunctionPropertyCallback func);
+        FunctionPropertyCallback functionPropertyStateCallback();
+
+    protected:
+        virtual ApplicationLayer& applicationLayer() = 0;
+        virtual InterfaceObject* getInterfaceObject(uint8_t idx) = 0;
+        virtual InterfaceObject* getInterfaceObject(ObjectType objectType, uint16_t objectInstance) = 0;
+
+        void memoryWriteIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
+                                   uint16_t memoryAddress, uint8_t* data) override;
+        void memoryReadIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
+                                  uint16_t memoryAddress) override;
+        void memoryReadIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
+                                  uint16_t memoryAddress, uint8_t* data);
+        void memoryRouterWriteIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
+                                         uint16_t memoryAddress, uint8_t* data);
+        void memoryRouterReadIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
+                                        uint16_t memoryAddress, uint8_t* data);
+        void memoryRoutingTableWriteIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
+                                               uint16_t memoryAddress, uint8_t* data);
+        void memoryRoutingTableReadIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number, uint16_t memoryAddress, uint8_t* data);
+        void memoryRoutingTableReadIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number, uint16_t memoryAddress);
+        //
+        void memoryExtWriteIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
+                                      uint32_t memoryAddress, uint8_t* data) override;
+        void memoryExtReadIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
+                                     uint32_t memoryAddress) override;
+        void deviceDescriptorReadIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t descriptorType) override;
+        void restartRequestIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, RestartType restartType, EraseCode eraseCode, uint8_t channel) override;
+        void authorizeIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint32_t key) override;
+        void userMemoryReadIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number, uint32_t memoryAddress) override;
+        void userMemoryWriteIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
+                                       uint32_t memoryAddress, uint8_t* memoryData) override;
+        void propertyDescriptionReadIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t objectIndex,
+                                               uint8_t propertyId, uint8_t propertyIndex) override;
+        void propertyExtDescriptionReadIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl,
+                uint16_t objectType, uint16_t objectInstance, uint16_t propertyId, uint8_t descriptionType, uint16_t propertyIndex) override;
+        void propertyValueWriteIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t objectIndex,
+                                          uint8_t propertyId, uint8_t numberOfElements, uint16_t startIndex, uint8_t* data, uint8_t length) override;
+        void propertyValueExtWriteIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, ObjectType objectType, uint8_t objectInstance,
+                                             uint8_t propertyId, uint8_t numberOfElements, uint16_t startIndex, uint8_t* data, uint8_t length, bool confirmed);
+        void propertyValueReadIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t objectIndex,
+                                         uint8_t propertyId, uint8_t numberOfElements, uint16_t startIndex) override;
+        void propertyValueExtReadIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, ObjectType objectType, uint8_t objectInstance,
+                                            uint8_t propertyId, uint8_t numberOfElements, uint16_t startIndex) override;
+        void functionPropertyCommandIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t objectIndex,
+                                               uint8_t propertyId, uint8_t* data, uint8_t length) override;
+        void functionPropertyStateIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t objectIndex,
+                                             uint8_t propertyId, uint8_t* data, uint8_t length) override;
+        void functionPropertyExtCommandIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, ObjectType objectType, uint8_t objectInstance,
+                uint8_t propertyId, uint8_t* data, uint8_t length) override;
+        void functionPropertyExtStateIndication(Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, ObjectType objectType, uint8_t objectInstance,
+                                                uint8_t propertyId, uint8_t* data, uint8_t length) override;
+        void individualAddressReadIndication(HopCountType hopType, const SecurityControl& secCtrl) override;
+        void individualAddressWriteIndication(HopCountType hopType, const SecurityControl& secCtrl, uint16_t newaddress) override;
+        void individualAddressSerialNumberWriteIndication(Priority priority, HopCountType hopType, const SecurityControl& secCtrl, uint16_t newIndividualAddress,
+                uint8_t* knxSerialNumber) override;
+        void individualAddressSerialNumberReadIndication(Priority priority, HopCountType hopType, const SecurityControl& secCtrl, uint8_t* knxSerialNumber) override;
+        void systemNetworkParameterReadIndication(Priority priority, HopCountType hopType, const SecurityControl& secCtrl, uint16_t objectType,
+                uint16_t propertyId, uint8_t* testInfo, uint16_t testinfoLength) override;
+        void systemNetworkParameterReadLocalConfirm(Priority priority, HopCountType hopType, const SecurityControl& secCtrl, uint16_t objectType,
+                uint16_t propertyId, uint8_t* testInfo, uint16_t testInfoLength, bool status) override;
+        void connectConfirm(uint16_t tsap) override;
+
+        void nextRestartState();
+        virtual void doMasterReset(EraseCode eraseCode, uint8_t channel);
+
+        enum RestartState
+        {
+            Idle,
+            Connecting,
+            Connected,
+            Restarted
+        };
+
+        Memory _memory;
+        DeviceObject _deviceObj;
+        ApplicationProgramObject _appProgram;
+        Platform& _platform;
+        RestartState _restartState = Idle;
+        SecurityControl _restartSecurity;
+        uint32_t _restartDelay = 0;
+        BeforeRestartCallback _beforeRestart = 0;
+        FunctionPropertyCallback _functionProperty = 0;
+        FunctionPropertyCallback _functionPropertyState = 0;
+};

components/knx/src/knx/bau_systemB_coupler.cpp

@@ -0,0 +1,60 @@
+#include "bau_systemB_coupler.h"
+#include "bits.h"
+#include <string.h>
+#include <stdio.h>
+
+BauSystemBCoupler::BauSystemBCoupler(Platform& platform) :
+    BauSystemB(platform),
+    _platform(platform),
+#ifdef USE_DATASECURE
+    _appLayer(_deviceObj, _secIfObj, *this),
+#else
+    _appLayer(*this),
+#endif
+    _transLayer(_appLayer),
+    _netLayer(_deviceObj, _transLayer)
+{
+    _appLayer.transportLayer(_transLayer);
+    _transLayer.networkLayer(_netLayer);
+    _memory.addSaveRestore(&_deviceObj);
+#ifdef USE_DATASECURE
+    _memory.addSaveRestore(&_secIfObj);
+#endif
+}
+
+ApplicationLayer& BauSystemBCoupler::applicationLayer()
+{
+    return _appLayer;
+}
+
+void BauSystemBCoupler::loop()
+{
+    _transLayer.loop();
+#ifdef USE_DATASECURE
+    _appLayer.loop();
+#endif
+}
+
+bool BauSystemBCoupler::configured()
+{
+    // _configured is set to true initially, if the device was configured with ETS it will be set to true after restart
+
+    if (!_configured)
+        return false;
+
+    _configured = _appProgram.loadState() == LS_LOADED;
+#ifdef USE_DATASECURE
+    _configured &= _secIfObj.loadState() == LS_LOADED;
+#endif
+
+    return _configured;
+}
+
+void BauSystemBCoupler::doMasterReset(EraseCode eraseCode, uint8_t channel)
+{
+    BauSystemB::doMasterReset(eraseCode, channel);
+
+#ifdef USE_DATASECURE
+    _secIfObj.masterReset(eraseCode, channel);
+#endif
+}

components/knx/src/knx/bau_systemB_coupler.h

@@ -0,0 +1,40 @@
+#pragma once
+
+#include "config.h"
+#include "bau_systemB.h"
+#include "device_object.h"
+#include "security_interface_object.h"
+#include "application_program_object.h"
+#include "router_object.h"
+#include "application_layer.h"
+#include "secure_application_layer.h"
+#include "transport_layer.h"
+#include "network_layer_coupler.h"
+#include "data_link_layer.h"
+#include "platform.h"
+#include "memory.h"
+
+class BauSystemBCoupler : public BauSystemB
+{
+    public:
+        BauSystemBCoupler(Platform& platform);
+        void loop() override;
+        bool configured() override;
+
+    protected:
+        ApplicationLayer& applicationLayer() override;
+
+        void doMasterReset(EraseCode eraseCode, uint8_t channel) override;
+
+        Platform& _platform;
+
+#ifdef USE_DATASECURE
+        SecureApplicationLayer _appLayer;
+        SecurityInterfaceObject _secIfObj;
+#else
+        ApplicationLayer _appLayer;
+#endif
+        TransportLayer _transLayer;
+        NetworkLayerCoupler _netLayer;
+        bool _configured = true;
+};

components/knx/src/knx/bau_systemB_device.cpp

@@ -0,0 +1,262 @@
+#include "bau_systemB_device.h"
+#include "bits.h"
+#include <string.h>
+#include <stdio.h>
+
+BauSystemBDevice::BauSystemBDevice(Platform& platform) :
+    BauSystemB(platform),
+    _addrTable(_memory),
+    _assocTable(_memory), _groupObjTable(_memory),
+#ifdef USE_DATASECURE
+    _appLayer(_deviceObj, _secIfObj, *this),
+#else
+    _appLayer(*this),
+#endif
+    _transLayer(_appLayer), _netLayer(_deviceObj, _transLayer)
+{
+    _appLayer.transportLayer(_transLayer);
+    _appLayer.associationTableObject(_assocTable);
+#ifdef USE_DATASECURE
+    _appLayer.groupAddressTable(_addrTable);
+#endif
+    _transLayer.networkLayer(_netLayer);
+    _transLayer.groupAddressTable(_addrTable);
+
+    _memory.addSaveRestore(&_deviceObj);
+    _memory.addSaveRestore(&_groupObjTable); // changed order for better memory management
+    _memory.addSaveRestore(&_addrTable);
+    _memory.addSaveRestore(&_assocTable);
+#ifdef USE_DATASECURE
+    _memory.addSaveRestore(&_secIfObj);
+#endif
+}
+
+ApplicationLayer& BauSystemBDevice::applicationLayer()
+{
+    return _appLayer;
+}
+
+GroupObjectTableObject& BauSystemBDevice::groupObjectTable()
+{
+    return _groupObjTable;
+}
+
+void BauSystemBDevice::loop()
+{
+    _transLayer.loop();
+    sendNextGroupTelegram();
+    nextRestartState();
+#ifdef USE_DATASECURE
+    _appLayer.loop();
+#endif
+    _memory.loop();
+}
+
+void BauSystemBDevice::sendNextGroupTelegram()
+{
+    if (!configured())
+        return;
+
+    static uint16_t startIdx = 1;
+
+    GroupObjectTableObject& table = _groupObjTable;
+    uint16_t objCount = table.entryCount();
+
+    for (uint16_t asap = startIdx; asap <= objCount; asap++)
+    {
+        GroupObject& go = table.get(asap);
+
+        ComFlag flag = go.commFlag();
+
+        if (flag != ReadRequest && flag != WriteRequest)
+            continue;
+
+        if (flag == WriteRequest)
+        {
+#ifdef SMALL_GROUPOBJECT
+            GroupObject::processClassCallback(go);
+#else
+            GroupObjectUpdatedHandler handler = go.callback();
+
+            if (handler)
+                handler(go);
+
+#endif
+        }
+
+        if (!go.communicationEnable())
+        {
+            go.commFlag(Ok);
+            continue;
+        }
+
+        SecurityControl goSecurity;
+        goSecurity.toolAccess = false; // Secured group communication never uses the toolkey. ETS knows all keys, also the group keys.
+
+#ifdef USE_DATASECURE
+        // Get security flags from Security Interface Object for this group object
+        goSecurity.dataSecurity = _secIfObj.getGroupObjectSecurity(asap);
+#else
+        goSecurity.dataSecurity = DataSecurity::None;
+#endif
+
+        if (flag == WriteRequest && go.transmitEnable())
+        {
+            uint8_t* data = go.valueRef();
+            _appLayer.groupValueWriteRequest(AckRequested, asap, go.priority(), NetworkLayerParameter, goSecurity, data,
+                                             go.sizeInTelegram());
+        }
+        else if (flag == ReadRequest)
+        {
+            _appLayer.groupValueReadRequest(AckRequested, asap, go.priority(), NetworkLayerParameter, goSecurity);
+        }
+
+        go.commFlag(Transmitting);
+
+        startIdx = asap + 1;
+        return;
+    }
+
+    startIdx = 1;
+}
+
+void BauSystemBDevice::updateGroupObject(GroupObject& go, uint8_t* data, uint8_t length)
+{
+    uint8_t* goData = go.valueRef();
+
+    if (length != go.valueSize())
+    {
+        go.commFlag(Error);
+        return;
+    }
+
+    memcpy(goData, data, length);
+
+    if (go.commFlag() != WriteRequest)
+    {
+        go.commFlag(Updated);
+#ifdef SMALL_GROUPOBJECT
+        GroupObject::processClassCallback(go);
+#else
+        GroupObjectUpdatedHandler handler = go.callback();
+
+        if (handler)
+            handler(go);
+
+#endif
+    }
+    else
+    {
+        go.commFlag(Updated);
+    }
+}
+
+bool BauSystemBDevice::configured()
+{
+    // _configured is set to true initially, if the device was configured with ETS it will be set to true after restart
+
+    if (!_configured)
+        return false;
+
+    _configured = _groupObjTable.loadState() == LS_LOADED
+                  && _addrTable.loadState() == LS_LOADED
+                  && _assocTable.loadState() == LS_LOADED
+                  && _appProgram.loadState() == LS_LOADED;
+
+#ifdef USE_DATASECURE
+    _configured &= _secIfObj.loadState() == LS_LOADED;
+#endif
+
+    return _configured;
+}
+
+void BauSystemBDevice::doMasterReset(EraseCode eraseCode, uint8_t channel)
+{
+    BauSystemB::doMasterReset(eraseCode, channel);
+
+    _addrTable.masterReset(eraseCode, channel);
+    _assocTable.masterReset(eraseCode, channel);
+    _groupObjTable.masterReset(eraseCode, channel);
+#ifdef USE_DATASECURE
+    _secIfObj.masterReset(eraseCode, channel);
+#endif
+}
+
+void BauSystemBDevice::groupValueWriteLocalConfirm(AckType ack, uint16_t asap, Priority priority, HopCountType hopType, const SecurityControl& secCtrl, uint8_t* data, uint8_t dataLength, bool status)
+{
+    GroupObject& go = _groupObjTable.get(asap);
+
+    if (status)
+        go.commFlag(Ok);
+    else
+        go.commFlag(Error);
+}
+
+void BauSystemBDevice::groupValueReadLocalConfirm(AckType ack, uint16_t asap, Priority priority, HopCountType hopType, const SecurityControl& secCtrl, bool status)
+{
+    GroupObject& go = _groupObjTable.get(asap);
+
+    if (status)
+        go.commFlag(Ok);
+    else
+        go.commFlag(Error);
+}
+
+void BauSystemBDevice::groupValueReadIndication(uint16_t asap, Priority priority, HopCountType hopType, const SecurityControl& secCtrl)
+{
+#ifdef USE_DATASECURE
+    DataSecurity requiredGoSecurity;
+
+    // Get security flags from Security Interface Object for this group object
+    requiredGoSecurity = _secIfObj.getGroupObjectSecurity(asap);
+
+    if (secCtrl.dataSecurity != requiredGoSecurity)
+    {
+        println("GroupValueRead: access denied due to wrong security flags");
+        return;
+    }
+
+#endif
+
+    GroupObject& go = _groupObjTable.get(asap);
+
+    if (!go.communicationEnable() || !go.readEnable())
+        return;
+
+    uint8_t* data = go.valueRef();
+    _appLayer.groupValueReadResponse(AckRequested, asap, priority, hopType, secCtrl, data, go.sizeInTelegram());
+}
+
+void BauSystemBDevice::groupValueReadAppLayerConfirm(uint16_t asap, Priority priority, HopCountType hopType, const SecurityControl& secCtrl, uint8_t* data,
+        uint8_t dataLength)
+{
+    GroupObject& go = _groupObjTable.get(asap);
+
+    if (!go.communicationEnable() || !go.responseUpdateEnable())
+        return;
+
+    updateGroupObject(go, data, dataLength);
+}
+
+void BauSystemBDevice::groupValueWriteIndication(uint16_t asap, Priority priority, HopCountType hopType, const SecurityControl& secCtrl, uint8_t* data, uint8_t dataLength)
+{
+#ifdef USE_DATASECURE
+    DataSecurity requiredGoSecurity;
+
+    // Get security flags from Security Interface Object for this group object
+    requiredGoSecurity = _secIfObj.getGroupObjectSecurity(asap);
+
+    if (secCtrl.dataSecurity != requiredGoSecurity)
+    {
+        println("GroupValueWrite: access denied due to wrong security flags");
+        return;
+    }
+
+#endif
+    GroupObject& go = _groupObjTable.get(asap);
+
+    if (!go.communicationEnable() || !go.writeEnable())
+        return;
+
+    updateGroupObject(go, data, dataLength);
+}

components/knx/src/knx/bau_systemB_device.h

@@ -0,0 +1,57 @@
+#pragma once
+
+#include "config.h"
+#include "bau_systemB.h"
+#include "device_object.h"
+#include "address_table_object.h"
+#include "association_table_object.h"
+#include "group_object_table_object.h"
+#include "security_interface_object.h"
+#include "application_program_object.h"
+#include "application_layer.h"
+#include "secure_application_layer.h"
+#include "transport_layer.h"
+#include "network_layer_device.h"
+#include "data_link_layer.h"
+#include "platform.h"
+#include "memory.h"
+
+class BauSystemBDevice : public BauSystemB
+{
+    public:
+        BauSystemBDevice(Platform& platform);
+        void loop() override;
+        bool configured() override;
+        GroupObjectTableObject& groupObjectTable();
+
+    protected:
+        ApplicationLayer& applicationLayer() override;
+
+        void groupValueWriteLocalConfirm(AckType ack, uint16_t asap, Priority priority, HopCountType hopType, const SecurityControl& secCtrl,
+                                         uint8_t* data, uint8_t dataLength, bool status) override;
+        void groupValueReadLocalConfirm(AckType ack, uint16_t asap, Priority priority, HopCountType hopType, const SecurityControl& secCtrl, bool status) override;
+        void groupValueReadIndication(uint16_t asap, Priority priority, HopCountType hopType, const SecurityControl& secCtrl) override;
+        void groupValueReadAppLayerConfirm(uint16_t asap, Priority priority, HopCountType hopType, const SecurityControl& secCtrl,
+                                           uint8_t* data, uint8_t dataLength) override;
+        void groupValueWriteIndication(uint16_t asap, Priority priority, HopCountType hopType, const SecurityControl& secCtrl,
+                                       uint8_t* data, uint8_t dataLength) override;
+
+        void sendNextGroupTelegram();
+        void updateGroupObject(GroupObject& go, uint8_t* data, uint8_t length);
+
+        void doMasterReset(EraseCode eraseCode, uint8_t channel) override;
+
+        AddressTableObject _addrTable;
+        AssociationTableObject _assocTable;
+        GroupObjectTableObject _groupObjTable;
+#ifdef USE_DATASECURE
+        SecureApplicationLayer _appLayer;
+        SecurityInterfaceObject _secIfObj;
+#else
+        ApplicationLayer _appLayer;
+#endif
+        TransportLayer _transLayer;
+        NetworkLayerDevice _netLayer;
+
+        bool _configured = true;
+};

components/knx/src/knx/bits.cpp

@@ -0,0 +1,364 @@
+#include "bits.h"
+#include <cstring> // for memcpy()
+
+const uint8_t* popByte(uint8_t& b, const uint8_t* data)
+{
+    b = *data;
+    data += 1;
+    return data;
+}
+
+#ifndef KNX_NO_PRINT
+void printHex(const char* suffix, const uint8_t* data, size_t length, bool newline)
+{
+    print(suffix);
+
+    for (size_t i = 0; i < length; i++)
+    {
+        if (data[i] < 0x10)
+        {
+            print("0");
+        }
+
+        print(data[i], HEX);
+        print(" ");
+    }
+
+    if (newline)
+    {
+        println();
+    }
+}
+#endif
+
+const uint8_t* popWord(uint16_t& w, const uint8_t* data)
+{
+    w = getWord(data);
+    data += 2;
+    return data;
+}
+
+const uint8_t* popInt(uint32_t& i, const uint8_t* data)
+{
+    i = getInt(data);
+    data += 4;
+    return data;
+}
+
+const uint8_t* popByteArray(uint8_t* dst, uint32_t size, const uint8_t* data)
+{
+    for (uint32_t i = 0; i < size; i++)
+        dst[i] = data[i];
+
+    data += size;
+    return data;
+}
+
+uint8_t* pushByte(uint8_t b, uint8_t* data)
+{
+    data[0] = b;
+    data += 1;
+    return data;
+}
+
+uint8_t* pushWord(uint16_t w, uint8_t* data)
+{
+    data[0] = ((w >> 8) & 0xff);
+    data[1] = (w & 0xff);
+    data += 2;
+    return data;
+}
+
+uint8_t* pushInt(uint32_t i, uint8_t* data)
+{
+    data[0] = ((i >> 24) & 0xff);
+    data[1] = ((i >> 16) & 0xff);
+    data[2] = ((i >> 8) & 0xff);
+    data[3] = (i & 0xff);
+    data += 4;
+    return data;
+}
+
+uint8_t* pushByteArray(const uint8_t* src, uint32_t size, uint8_t* data)
+{
+    for (uint32_t i = 0; i < size; i++)
+        data[i] = src[i];
+
+    data += size;
+    return data;
+}
+
+uint16_t getWord(const uint8_t* data)
+{
+    return (data[0] << 8) + data[1];
+}
+
+uint32_t getInt(const uint8_t* data)
+{
+    return (data[0] << 24) + (data[1] << 16) + (data[2] << 8) + data[3];
+}
+
+void sixBytesFromUInt64(uint64_t num, uint8_t* toByteArray)
+{
+    toByteArray[0] = ((num >> 40) & 0xff);
+    toByteArray[1] = ((num >> 32) & 0xff);
+    toByteArray[2] = ((num >> 24) & 0xff);
+    toByteArray[3] = ((num >> 16) & 0xff);
+    toByteArray[4] = ((num >> 8) & 0xff);
+    toByteArray[5] = (num & 0xff);
+}
+
+uint64_t sixBytesToUInt64(uint8_t* data)
+{
+    uint64_t l = 0;
+
+    for (uint8_t i = 0; i < 6; i++)
+    {
+        l = (l << 8) + data[i];
+    }
+
+    return l;
+}
+
+// The CRC of the Memory Control Block Table Property is a CRC16-CCITT with the following
+// parameters:
+// Width = 16 bit
+// Truncated polynomial = 1021h
+// Initial value = FFFFh
+// Input date is NOT reflected.
+// Output CRC is NOT reflected.
+// No XOR is performed on the output CRC.
+// EXAMPLE The correct CRC16-CCITT of the string ‘123456789’ is E5CCh.
+
+uint16_t crc16Ccitt(uint8_t* input, uint16_t length)
+{
+    uint32_t polynom = 0x1021;
+
+    uint32_t result = 0xffff;
+
+    for (uint32_t i = 0; i < 8 * ((uint32_t)length + 2); i++)
+    {
+        result <<= 1;
+        uint32_t nextBit;
+        nextBit = ((i / 8) < length) ? ((input[i / 8] >> (7 - (i % 8))) & 0x1) : 0;
+        result |= nextBit;
+
+        if ((result & 0x10000) != 0)
+            result ^= polynom;
+    }
+
+    return result & 0xffff;
+}
+
+uint16_t crc16Dnp(uint8_t* input, uint16_t length)
+{
+    // CRC-16-DNP
+    // generator polynomial = 2^16 + 2^13 + 2^12 + 2^11 + 2^10 + 2^8 + 2^6 + 2^5 + 2^2 + 2^0
+    uint32_t pn = 0x13d65; // 1 0011 1101 0110 0101
+
+    // for much data, using a lookup table would be a way faster CRC calculation
+    uint32_t crc = 0;
+
+    for (uint32_t i = 0; i < length; i++)
+    {
+        uint8_t bite = input[i] & 0xff;
+
+        for (uint8_t b = 8; b -- > 0;)
+        {
+            bool bit = ((bite >> b) & 1) == 1;
+            bool one = (crc >> 15 & 1) == 1;
+            crc <<= 1;
+
+            if (one ^ bit)
+                crc ^= pn;
+        }
+    }
+
+    return (~crc) & 0xffff;
+}
+
+// Produce Arduino print and println in ESP IDF for ESP32 family using printf().
+#ifndef ARDUINO
+#ifdef ESP_PLATFORM
+    // Helper function to print a number in binary format
+    static void print_binary(unsigned long long n)
+    {
+        if (n == 0)
+        {
+            printf("0");
+            return;
+        }
+
+        // Buffer for the maximum possible bits in an unsigned long long
+        char binary_string[65];
+        int i = 0;
+        while (n > 0)
+        {
+            binary_string[i++] = (n % 2) + '0';
+            n /= 2;
+        }
+        binary_string[i] = '\0';
+
+        // Reverse the string to get the correct binary representation
+        for (int j = 0; j < i / 2; ++j)
+        {
+            char temp = binary_string[j];
+            binary_string[j] = binary_string[i - j - 1];
+            binary_string[i - j - 1] = temp;
+        }
+        printf("%s", binary_string);
+    }
+
+// --- print function implementations ---
+
+void print(const char str[]) {
+    printf("%s", str);
+}
+
+void print(char c) {
+    printf("%c", c);
+}
+
+void print(unsigned char b, int base) {
+    if (base == BIN) {
+        print_binary(b);
+    } else if (base == DEC) {
+        printf("%u", (unsigned int)b);
+    } else if (base == HEX) {
+        printf("%x", (unsigned int)b);
+    } else if (base == OCT) {
+        printf("%o", (unsigned int)b);
+    }
+}
+
+void print(int n, int base) {
+    if (base == BIN) {
+        print_binary(n);
+    } else if (base == DEC) {
+        printf("%d", n);
+    } else if (base == HEX) {
+        printf("%x", n);
+    } else if (base == OCT) {
+        printf("%o", n);
+    }
+}
+
+void print(unsigned int n, int base) {
+    if (base == BIN) {
+        print_binary(n);
+    } else if (base == DEC) {
+        printf("%u", n);
+    } else if (base == HEX) {
+        printf("%x", n);
+    } else if (base == OCT) {
+        printf("%o", n);
+    }
+}
+
+void print(long n, int base) {
+    if (base == BIN) {
+        print_binary(n);
+    } else if (base == DEC) {
+        printf("%ld", n);
+    } else if (base == HEX) {
+        printf("%lx", n);
+    } else if (base == OCT) {
+        printf("%lo", n);
+    }
+}
+
+void print(unsigned long n, int base) {
+    if (base == BIN) {
+        print_binary(n);
+    } else if (base == DEC) {
+        printf("%lu", n);
+    } else if (base == HEX) {
+        printf("%lx", n);
+    } else if (base == OCT) {
+        printf("%lo", n);
+    }
+}
+
+void print(long long n, int base) {
+    if (base == BIN) {
+        print_binary(n);
+    } else if (base == DEC) {
+        printf("%lld", n);
+    } else if (base == HEX) {
+        printf("%llx", n);
+    } else if (base == OCT) {
+        printf("%llo", n);
+    }
+}
+
+void print(unsigned long long n, int base) {
+    if (base == BIN) {
+        print_binary(n);
+    } else if (base == DEC) {
+        printf("%llu", n);
+    } else if (base == HEX) {
+        printf("%llx", n);
+    } else if (base == OCT) {
+        printf("%llo", n);
+    }
+}
+
+void print(double n) {
+    printf("%f", n);
+}
+
+void println(void) {
+    printf("\n");
+}
+
+void println(const char c[]) {
+    print(c);
+    println();
+}
+
+void println(char c) {
+    print(c);
+    println();
+}
+
+void println(unsigned char b, int base) {
+    print(b, base);
+    println();
+}
+
+void println(int num, int base) {
+    print(num, base);
+    println();
+}
+
+void println(unsigned int num, int base) {
+    print(num, base);
+    println();
+}
+
+void println(long num, int base) {
+    print(num, base);
+    println();
+}
+
+void println(unsigned long num, int base) {
+    print(num, base);
+    println();
+}
+
+void println(long long num, int base) {
+    print(num, base);
+    println();
+}
+
+void println(unsigned long long num, int base) {
+    print(num, base);
+    println();
+}
+
+void println(double num) {
+    print(num);
+    println();
+}
+#endif // ESP_PLATFORM
+#endif // !ARDUINO

components/knx/src/knx/bits.h

@@ -0,0 +1,161 @@
+#pragma  once
+
+#include <cstddef>
+#include <cstdint>
+
+#if defined(__linux__)
+    #include <arpa/inet.h>
+#elif defined(ARDUINO_ARCH_SAMD) || defined(ARDUINO_ARCH_STM32) || defined (DeviceFamily_CC13X0)
+    #define getbyte(x,n) (*(((uint8_t*)&(x))+n))
+    #define htons(x)  ( (getbyte(x,0)<<8) | getbyte(x,1) )
+    #define htonl(x) ( (getbyte(x,0)<<24) | (getbyte(x,1)<<16) | (getbyte(x,2)<<8) | getbyte(x,3) )
+    #define ntohs(x) htons(x)
+    #define ntohl(x) htonl(x)
+#elif defined(LIBRETINY)
+    #include <lwip/udp.h>
+    #define htons(x) lwip_htons(x)
+    #define htonl(x) lwip_htonl(x)
+#endif
+
+#if defined(ARDUINO_ARCH_SAMD) || defined(ARDUINO_ARCH_RP2040) || defined(ARDUINO_ARCH_STM32) || defined(LIBRETINY)
+    #include <Arduino.h>
+#elif defined(ARDUINO_ARCH_ESP8266)
+    #include <Arduino.h>
+    #include <user_interface.h>
+#elif defined(ARDUINO_ARCH_ESP32)
+    #include <Arduino.h>
+    #include <esp_wifi.h>
+#elif defined(ESP_PLATFORM)
+    #include <lwip/inet.h>
+    #include <driver/gpio.h>
+    // // Define Arduino-like macros if needed for compatibility
+
+    #define lowByte(val) ((val)&255)
+    #define highByte(val) (((val) >> ((sizeof(val) - 1) << 3)) & 255)
+    #define bitRead(val, bitno) (((val) >> (bitno)) & 1)
+    #define DEC 10
+    #define HEX 16
+    #define OCT  8
+    #define BIN  2
+    #define LOW  0
+    #define HIGH 1
+    #define CHANGE GPIO_INTR_ANYEDGE
+    #define FALLING GPIO_INTR_NEGEDGE
+    #define RISING GPIO_INTR_POSEDGE
+    // Implement or map Arduino-like functions if needed
+    uint32_t millis();
+    typedef void (*IsrFuncPtr)(void); // Arduino-style
+    typedef void (*EspIsrFuncPtr)(void*); // ESP-IDF-style
+    void attachInterrupt(uint32_t pin, IsrFuncPtr callback, uint32_t mode);
+#else // Non-Arduino platforms
+    #define lowByte(val) ((val)&255)
+    #define highByte(val) (((val) >> ((sizeof(val) - 1) << 3)) & 255)
+    #define bitRead(val, bitno) (((val) >> (bitno)) & 1)
+
+    // print functions are implemented in the platform files
+    #define DEC 10
+    #define HEX 16
+
+    #define INPUT (0x0)
+    #define OUTPUT (0x1)
+    #define INPUT_PULLUP (0x2)
+    #define INPUT_PULLDOWN (0x3)
+
+    #define LOW (0x0)
+    #define HIGH (0x1)
+    #define CHANGE 2
+    #define FALLING 3
+    #define RISING 4
+
+    void delay(uint32_t millis);
+    void delayMicroseconds (unsigned int howLong);
+    uint32_t millis();
+    void pinMode(uint32_t dwPin, uint32_t dwMode);
+    void digitalWrite(uint32_t dwPin, uint32_t dwVal);
+    uint32_t digitalRead(uint32_t dwPin);
+    typedef void (*voidFuncPtr)(void);
+    void attachInterrupt(uint32_t pin, voidFuncPtr callback, uint32_t mode);
+#endif
+
+#ifndef MIN
+    #define MIN(a, b) ((a < b) ? (a) : (b))
+#endif
+
+#ifndef MAX
+    #define MAX(a, b) ((a > b) ? (a) : (b))
+#endif
+
+#ifndef ABS
+    #define ABS(x)    ((x > 0) ? (x) : (-x))
+#endif
+
+#ifndef KNX_NO_PRINT
+    void print(const char[]);
+    void print(char);
+    void print(unsigned char, int = DEC);
+    void print(int, int = DEC);
+    void print(unsigned int, int = DEC);
+    void print(long, int = DEC);
+    void print(unsigned long, int = DEC);
+    void print(long long, int = DEC);
+    void print(unsigned long long, int = DEC);
+    void print(double);
+
+    void println(const char[]);
+    void println(char);
+    void println(unsigned char, int = DEC);
+    void println(int, int = DEC);
+    void println(unsigned int, int = DEC);
+    void println(long, int = DEC);
+    void println(unsigned long, int = DEC);
+    void println(long long, int = DEC);
+    void println(unsigned long long, int = DEC);
+    void println(double);
+    void println(void);
+
+    void printHex(const char* suffix, const uint8_t* data, size_t length, bool newline = true);
+#else
+    #define print(...)      do {} while(0)
+    #define println(...)    do {} while(0)
+    #define printHex(...)   do {} while(0)
+#endif
+
+#ifdef KNX_ACTIVITYCALLBACK
+    #define KNX_ACTIVITYCALLBACK_DIR 0x00
+    #define KNX_ACTIVITYCALLBACK_DIR_RECV 0x00
+    #define KNX_ACTIVITYCALLBACK_DIR_SEND 0x01
+    #define KNX_ACTIVITYCALLBACK_IPUNICAST 0x02
+    #define KNX_ACTIVITYCALLBACK_NET 0x04
+#endif
+
+const uint8_t* popByte(uint8_t& b, const uint8_t* data);
+const uint8_t* popWord(uint16_t& w, const uint8_t* data);
+const uint8_t* popInt(uint32_t& i, const uint8_t* data);
+const uint8_t* popByteArray(uint8_t* dst, uint32_t size, const uint8_t* data);
+uint8_t* pushByte(uint8_t b, uint8_t* data);
+uint8_t* pushWord(uint16_t w, uint8_t* data);
+uint8_t* pushInt(uint32_t i, uint8_t* data);
+uint8_t* pushByteArray(const uint8_t* src, uint32_t size, uint8_t* data);
+uint16_t getWord(const uint8_t* data);
+uint32_t getInt(const uint8_t* data);
+
+void sixBytesFromUInt64(uint64_t num, uint8_t* toByteArray);
+uint64_t sixBytesToUInt64(uint8_t* data);
+
+uint16_t crc16Ccitt(uint8_t* input, uint16_t length);
+uint16_t crc16Dnp(uint8_t* input, uint16_t length);
+
+enum ParameterFloatEncodings
+{
+    Float_Enc_DPT9 = 0,          // 2 Byte. See Chapter 3.7.2 section 3.10 (Datapoint Types 2-Octet Float Value)
+    Float_Enc_IEEE754Single = 1, // 4 Byte. C++ float
+    Float_Enc_IEEE754Double = 2, // 8 Byte. C++ double
+};
+
+
+#if defined(ARDUINO_ARCH_SAMD)
+    // temporary undef until framework-arduino-samd > 1.8.9 is released. See https://github.com/arduino/ArduinoCore-samd/pull/399 for a PR should will probably address this
+    #undef max
+    #undef min
+    // end of temporary undef
+#endif

components/knx/src/knx/callback_property.h

@@ -0,0 +1,39 @@
+#pragma once
+
+#include "property.h"
+
+class InterfaceObject;
+
+template <class T> class CallbackProperty : public Property
+{
+    public:
+        CallbackProperty(T* io, PropertyID id, bool writeEnable, PropertyDataType type, uint16_t maxElements,
+                         uint8_t access, uint8_t (*readCallback)(T*, uint16_t, uint8_t, uint8_t*),
+                         uint8_t (*writeCallback)(T*, uint16_t, uint8_t, const uint8_t*))
+            : Property(id, writeEnable, type, maxElements, access),
+              _interfaceObject(io), _readCallback(readCallback), _writeCallback(writeCallback)
+        {}
+        CallbackProperty(T* io, PropertyID id, bool writeEnable, PropertyDataType type, uint16_t maxElements,
+                         uint8_t access, uint8_t (*readCallback)(T*, uint16_t, uint8_t, uint8_t*))
+            : Property(id, writeEnable, type, maxElements, access), _interfaceObject(io), _readCallback(readCallback)
+        {}
+
+        uint8_t read(uint16_t start, uint8_t count, uint8_t* data) const override
+        {
+            if (count == 0 || _readCallback == nullptr || start > _maxElements || start + count > _maxElements + 1)
+                return 0;
+
+            return _readCallback(_interfaceObject, start, count, data);
+        }
+        uint8_t write(uint16_t start, uint8_t count, const uint8_t* data) override
+        {
+            if (count == 0 || start > _maxElements || start + count > _maxElements + 1 || _writeCallback == nullptr)
+                return 0;
+
+            return _writeCallback(_interfaceObject, start, count, data);
+        }
+    private:
+        T* _interfaceObject = nullptr;
+        uint8_t (*_readCallback)(T*, uint16_t, uint8_t, uint8_t*) = nullptr;
+        uint8_t (*_writeCallback)(T*, uint16_t, uint8_t, const uint8_t*) = nullptr;
+};

components/knx/src/knx/cemi_frame.cpp

@@ -0,0 +1,403 @@
+#include "cemi_frame.h"
+#include "bits.h"
+#include "string.h"
+#include <stdio.h>
+
+/*
+cEMI Frame Format
+
+              +--------+--------+--------+--------+---------+---------+--------+---------+
+              |                               _data                                      |
+              +--------+--------+--------+--------+---------+---------+--------+---------+
+              |                               LPDU                                       |
+              +--------+--------+--------+--------+---------+---------+--------+---------+
+                                                                      |           NPDU   |
+    +---------+--------+--------+--------+--------+---------+---------+--------+---------+
+    | Header  |  Msg   |Add.Info| Ctrl 1 | Ctrl 2 | Source  | Dest.   |  Data  |   TPDU  |
+    |         | Code   | Length |        |        | Address | Address | Length |   APDU  |
+    +---------+--------+--------+--------+--------+---------+---------+--------+---------+
+      6 bytes   1 byte   1 byte   1 byte   1 byte   2 bytes   2 bytes   1 byte   n bytes
+
+        Header          = See below the structure of a cEMI header
+        Message Code    = See below. On Appendix A is the list of all existing EMI and cEMI codes
+        Add.Info Length = 0x00 - no additional info
+        Control Field 1 =
+        Control Field 2 =
+        Source Address  = 0x0000 - filled in by router/gateway with its source address which is
+                          part of the KNX subnet
+        Dest. Address   = KNX group or individual address (2 byte)
+        Data Length     = Number of bytes of data in the APDU excluding the TPCI/APCI bits
+        APDU            = Application Protocol Data Unit - the actual payload including transport
+                          protocol control information (TPCI), application protocol control
+                          information (APCI) and data passed as an argument from higher layers of
+                          the KNX communication stack
+
+Control Field 1
+
+          Bit  |
+         ------+---------------------------------------------------------------
+           7   | Frame Type  - 0x0 for extended frame
+               |               0x1 for standard frame
+         ------+---------------------------------------------------------------
+           6   | Reserved
+               |
+         ------+---------------------------------------------------------------
+           5   | Repeat Flag - 0x0 repeat frame on medium in case of an error
+               |               0x1 do not repeat
+         ------+---------------------------------------------------------------
+           4   | System Broadcast - 0x0 system broadcast
+               |                    0x1 broadcast
+         ------+---------------------------------------------------------------
+           3   | Priority    - 0x0 system
+               |               0x1 normal
+         ------+               0x2 urgent
+           2   |               0x3 low
+               |
+         ------+---------------------------------------------------------------
+           1   | Acknowledge Request - 0x0 no ACK requested
+               | (L_Data.req)          0x1 ACK requested
+         ------+---------------------------------------------------------------
+           0   | Confirm      - 0x0 no error
+               | (L_Data.con) - 0x1 error
+         ------+---------------------------------------------------------------
+
+         Control Field 2
+
+          Bit  |
+         ------+---------------------------------------------------------------
+           7   | Destination Address Type - 0x0 individual address
+               |                          - 0x1 group address
+         ------+---------------------------------------------------------------
+          6-4  | Hop Count (0-7)
+         ------+---------------------------------------------------------------
+          3-0  | Extended Frame Format - 0x0 standard frame
+         ------+---------------------------------------------------------------
+*/
+
+CemiFrame::CemiFrame(uint8_t* data, uint16_t length)
+    : _npdu(data + data[1] + NPDU_LPDU_DIFF, *this),
+      _tpdu(data + data[1] + TPDU_LPDU_DIFF, *this),
+      _apdu(data + data[1] + APDU_LPDU_DIFF, *this)
+{
+    _data = data;
+    _ctrl1 = data + data[1] + CEMI_HEADER_SIZE;
+    _length = length;
+}
+
+CemiFrame::CemiFrame(uint8_t apduLength)
+    : _data(buffer),
+      _npdu(_data + NPDU_LPDU_DIFF, *this),
+      _tpdu(_data + TPDU_LPDU_DIFF, *this),
+      _apdu(_data + APDU_LPDU_DIFF, *this)
+{
+    _ctrl1 = _data + CEMI_HEADER_SIZE;
+
+    memset(_data, 0, apduLength + APDU_LPDU_DIFF);
+    _ctrl1[0] |= Broadcast;
+    _npdu.octetCount(apduLength);
+    _length = _npdu.length() + NPDU_LPDU_DIFF;
+}
+
+CemiFrame::CemiFrame(const CemiFrame& other)
+    : _data(buffer),
+      _npdu(_data + NPDU_LPDU_DIFF, *this),
+      _tpdu(_data + TPDU_LPDU_DIFF, *this),
+      _apdu(_data + APDU_LPDU_DIFF, *this)
+{
+    _ctrl1 = _data + CEMI_HEADER_SIZE;
+    _length = other._length;
+
+    memcpy(_data, other._data, other.totalLenght());
+}
+
+CemiFrame& CemiFrame::operator=(CemiFrame other)
+{
+    _length = other._length;
+    _data = buffer;
+    _ctrl1 = _data + CEMI_HEADER_SIZE;
+    memcpy(_data, other._data, other.totalLenght());
+    _npdu._data = _data + NPDU_LPDU_DIFF;
+    _tpdu._data = _data + TPDU_LPDU_DIFF;
+    _apdu._data = _data + APDU_LPDU_DIFF;
+    return *this;
+}
+
+
+MessageCode CemiFrame::messageCode() const
+{
+    return (MessageCode)_data[0];
+}
+
+void CemiFrame::messageCode(MessageCode msgCode)
+{
+    _data[0] = msgCode;
+}
+
+uint16_t CemiFrame::totalLenght() const
+{
+    return _length;
+}
+
+uint16_t CemiFrame::telegramLengthtTP() const
+{
+    if (frameType() == StandardFrame)
+        return totalLenght() - 2; /*-AddInfo -MsgCode - only one CTRL + CRC, */
+    else
+        return totalLenght() - 1; /*-AddInfo -MsgCode + CRC, */
+}
+
+void CemiFrame::fillTelegramTP(uint8_t* data)
+{
+    uint16_t len = telegramLengthtTP();
+
+    if (frameType() == StandardFrame)
+    {
+        uint8_t octet5 = (_ctrl1[1] & 0xF0) | (_ctrl1[6] & 0x0F);
+        data[0] = _ctrl1[0]; //CTRL
+        memcpy(data + 1, _ctrl1 + 2, 4); // SA, DA
+        data[5] = octet5; // LEN; Hopcount, ..
+        memcpy(data + 6, _ctrl1 + 7, len - 7); // APDU
+    }
+    else
+    {
+        memcpy(data, _ctrl1, len - 1);
+    }
+
+    data[len - 1] = calcCrcTP(data, len - 1);
+}
+
+#ifdef USE_RF
+
+uint16_t CemiFrame::telegramLengthtRF() const
+{
+    return totalLenght() - 3;
+}
+
+void CemiFrame::fillTelegramRF(uint8_t* data)
+{
+    uint16_t len = telegramLengthtRF();
+
+    // We prepare the actual KNX telegram for RF here only.
+    // The packaging into blocks with CRC16 (Format based on FT3 Data Link Layer (IEC 870-5))
+    // is done in the RF Data Link Layer code.
+    // RF always uses the Extended Frame Format. However, the length field is missing (right before the APDU)
+    // as there is already a length field at the beginning of the raw RF frame which is also used by the
+    // physical layer to control the HW packet engine of the transceiver.
+
+    data[0] = _ctrl1[1] & 0x0F; // KNX CTRL field for RF (bits 3..0 EFF only), bits 7..4 are set to 0 for asynchronous RF frames
+    memcpy(data + 1, _ctrl1 + 2, 4); // SA, DA
+    data[5] = (_ctrl1[1] & 0xF0) | ((_rfLfn & 0x7) << 1) | ((_ctrl1[0] & 0x10) >> 4); // L/NPCI field: AT, Hopcount, LFN, AET
+    memcpy(data + 6, _ctrl1 + 7, len - 6); // APDU
+
+    //printHex("cEMI_fill: ", &data[0], len);
+}
+#endif
+uint8_t* CemiFrame::data()
+{
+    return _data;
+}
+
+uint16_t CemiFrame::dataLength()
+{
+    return _length;
+}
+
+uint8_t CemiFrame::calcCrcTP(uint8_t* buffer, uint16_t len)
+{
+    uint8_t crc = 0xFF;
+
+    for (uint16_t i = 0; i < len; i++)
+        crc ^= buffer[i];
+
+    return crc;
+}
+
+FrameFormat CemiFrame::frameType() const
+{
+    return (FrameFormat)(_ctrl1[0] & StandardFrame);
+}
+
+void CemiFrame::frameType(FrameFormat type)
+{
+    _ctrl1[0] &= ~StandardFrame;
+    _ctrl1[0] |= type;
+}
+
+Repetition CemiFrame::repetition() const
+{
+    return (Repetition)(_ctrl1[0] & RepetitionAllowed);
+}
+
+void CemiFrame::repetition(Repetition rep)
+{
+    _ctrl1[0] &= ~RepetitionAllowed;
+    _ctrl1[0] |= rep;
+}
+
+SystemBroadcast CemiFrame::systemBroadcast() const
+{
+    return (SystemBroadcast)(_ctrl1[0] & Broadcast);
+}
+
+void CemiFrame::systemBroadcast(SystemBroadcast value)
+{
+    _ctrl1[0] &= ~Broadcast;
+    _ctrl1[0] |= value;
+}
+
+Priority CemiFrame::priority() const
+{
+    return (Priority)(_ctrl1[0] & LowPriority);
+}
+
+void CemiFrame::priority(Priority value)
+{
+    _ctrl1[0] &= ~LowPriority;
+    _ctrl1[0] |= value;
+}
+
+AckType CemiFrame::ack() const
+{
+    return (AckType)(_ctrl1[0] & AckRequested);
+}
+
+void CemiFrame::ack(AckType value)
+{
+    _ctrl1[0] &= ~AckRequested;
+    _ctrl1[0] |= value;
+}
+
+Confirm CemiFrame::confirm() const
+{
+    return (Confirm)(_ctrl1[0] & ConfirmError);
+}
+
+void CemiFrame::confirm(Confirm value)
+{
+    _ctrl1[0] &= ~ConfirmError;
+    _ctrl1[0] |= value;
+}
+
+AddressType CemiFrame::addressType() const
+{
+    return (AddressType)(_ctrl1[1] & GroupAddress);
+}
+
+void CemiFrame::addressType(AddressType value)
+{
+    _ctrl1[1] &= ~GroupAddress;
+    _ctrl1[1] |= value;
+}
+
+uint8_t CemiFrame::hopCount() const
+{
+    return ((_ctrl1[1] >> 4) & 0x7);
+}
+
+void CemiFrame::hopCount(uint8_t value)
+{
+    _ctrl1[1] &= ~(0x7 << 4);
+    _ctrl1[1] |= ((value & 0x7) << 4);
+}
+
+uint16_t CemiFrame::sourceAddress() const
+{
+    uint16_t addr;
+    popWord(addr, _ctrl1 + 2);
+    return addr;
+}
+
+void CemiFrame::sourceAddress(uint16_t value)
+{
+    pushWord(value, _ctrl1 + 2);
+}
+
+uint16_t CemiFrame::destinationAddress() const
+{
+    uint16_t addr;
+    popWord(addr, _ctrl1 + 4);
+    return addr;
+}
+
+void CemiFrame::destinationAddress(uint16_t value)
+{
+    pushWord(value, _ctrl1 + 4);
+}
+#ifdef USE_RF
+uint8_t* CemiFrame::rfSerialOrDoA() const
+{
+    return _rfSerialOrDoA;
+}
+
+void CemiFrame::rfSerialOrDoA(const uint8_t* rfSerialOrDoA)
+{
+    _rfSerialOrDoA = (uint8_t*)rfSerialOrDoA;
+}
+
+uint8_t CemiFrame::rfInfo() const
+{
+    return _rfInfo;
+}
+
+void CemiFrame::rfInfo(uint8_t rfInfo)
+{
+    _rfInfo = rfInfo;
+}
+
+uint8_t CemiFrame::rfLfn() const
+{
+    return _rfLfn;
+}
+
+void CemiFrame::rfLfn(uint8_t rfLfn)
+{
+    _rfLfn = rfLfn;
+}
+#endif
+NPDU& CemiFrame::npdu()
+{
+    return _npdu;
+}
+
+TPDU& CemiFrame::tpdu()
+{
+    return _tpdu;
+}
+
+APDU& CemiFrame::apdu()
+{
+    return _apdu;
+}
+
+bool CemiFrame::valid() const
+{
+    uint8_t addInfoLen = _data[1];
+    uint8_t apduLen = _data[_data[1] + NPDU_LPDU_DIFF];
+
+    if (_length != 0 && _length != (addInfoLen + apduLen + NPDU_LPDU_DIFF + 2))
+    {
+        print("length issue, length: ");
+        print(_length);
+        print(" addInfoLen: ");
+        print(addInfoLen);
+        print(" apduLen: ");
+        print(apduLen);
+        print(" expected length: ");
+        println(addInfoLen + apduLen + NPDU_LPDU_DIFF + 2);
+        printHex("Frame: ", _data, _length, true);
+
+        return false;
+    }
+
+    if ((_ctrl1[0] & 0x40) > 0 // Bit 6 has do be 0
+            || (_ctrl1[1] & 0xF) > 0 // only standard or extended frames
+            || _npdu.octetCount() == 0xFF // not allowed
+            || (_npdu.octetCount() > 15 && frameType() == StandardFrame)
+       )
+    {
+        print("Other issue");
+        return false;
+    }
+
+    return true;
+}

components/knx/src/knx/cemi_frame.h

@@ -0,0 +1,94 @@
+#pragma once
+
+#include "knx_types.h"
+#include "stdint.h"
+#include "npdu.h"
+#include "tpdu.h"
+#include "apdu.h"
+#include "config.h"
+
+#define NPDU_LPDU_DIFF 8
+#define TPDU_NPDU_DIFF 1
+#define APDU_TPDU_DIFF 0
+#define TPDU_LPDU_DIFF (TPDU_NPDU_DIFF + NPDU_LPDU_DIFF)
+#define APDU_LPDU_DIFF (APDU_TPDU_DIFF + TPDU_NPDU_DIFF + NPDU_LPDU_DIFF)
+
+// Mesg Code and additional info length
+#define CEMI_HEADER_SIZE 2
+
+class CemiFrame
+{
+        friend class DataLinkLayer;
+
+    public:
+        CemiFrame(uint8_t* data, uint16_t length);
+        CemiFrame(uint8_t apduLength);
+        CemiFrame(const CemiFrame& other);
+        CemiFrame& operator=(CemiFrame other);
+
+        MessageCode messageCode() const;
+        void messageCode(MessageCode value);
+        uint16_t totalLenght() const;
+        uint16_t telegramLengthtTP() const;
+        void fillTelegramTP(uint8_t* data);
+        uint16_t telegramLengthtRF() const;
+        void fillTelegramRF(uint8_t* data);
+        uint8_t* data();
+        uint16_t dataLength();
+
+        FrameFormat frameType() const;
+        void frameType(FrameFormat value);
+        Repetition repetition() const;
+        void repetition(Repetition value);
+        SystemBroadcast systemBroadcast() const;
+        void systemBroadcast(SystemBroadcast value);
+        Priority priority() const;
+        void priority(Priority value);
+        AckType ack() const;
+        void ack(AckType value);
+        Confirm confirm() const;
+        void confirm(Confirm value);
+        AddressType addressType() const;
+        void addressType(AddressType value);
+        uint8_t hopCount() const;
+        void hopCount(uint8_t value);
+        uint16_t sourceAddress() const;
+        void sourceAddress(uint16_t value);
+        uint16_t destinationAddress() const;
+        void destinationAddress(uint16_t value);
+
+#ifdef USE_RF
+        // only for RF medium
+        uint8_t* rfSerialOrDoA() const;
+        void rfSerialOrDoA(const uint8_t* rfSerialOrDoA);
+        uint8_t rfInfo() const;
+        void rfInfo(uint8_t rfInfo);
+        uint8_t rfLfn() const;
+        void rfLfn(uint8_t rfInfo);
+#endif
+        NPDU& npdu();
+        TPDU& tpdu();
+        APDU& apdu();
+
+        uint8_t calcCrcTP(uint8_t* buffer, uint16_t len);
+        bool valid() const;
+
+    private:
+        uint8_t buffer[0xff + NPDU_LPDU_DIFF] = {0}; //only valid of add info is zero
+        uint8_t* _data = 0;
+        uint8_t* _ctrl1 = 0;
+        NPDU _npdu;
+        TPDU _tpdu;
+        APDU _apdu;
+        uint16_t _length = 0; // only set if created from byte array
+
+#ifdef USE_RF
+        // FIXME: integrate this propery in _data
+        // only for RF medium
+        uint8_t* _rfSerialOrDoA = 0;
+        uint8_t  _rfInfo = 0;
+        uint8_t  _rfLfn = 0xFF; // RF Data Link layer frame number
+#endif
+
+        uint8_t _sourceInterfaceIndex;
+};

components/knx/src/knx/cemi_server.cpp

@@ -0,0 +1,443 @@
+#include "config.h"
+#ifdef USE_CEMI_SERVER
+
+#include "cemi_server.h"
+#include "cemi_frame.h"
+#include "bau_systemB.h"
+#include "usb_tunnel_interface.h"
+#include "data_link_layer.h"
+#include "string.h"
+#include "bits.h"
+#include <stdio.h>
+
+CemiServer::CemiServer(BauSystemB& bau)
+    : _bau(bau)
+#ifdef USE_USB
+    ,
+      _usbTunnelInterface(*this,
+                          _bau.deviceObject().maskVersion(),
+                          _bau.deviceObject().manufacturerId())
+#endif
+{
+    // The cEMI server will hand out the device address + 1 to the cEMI client (e.g. ETS),
+    // so that the device and the cEMI client/server connection(tunnel) can operate simultaneously.
+    _clientAddress = _bau.deviceObject().individualAddress() + 1;
+}
+
+void CemiServer::dataLinkLayer(DataLinkLayer& layer)
+{
+    _dataLinkLayer = &layer;
+}
+
+#ifdef KNX_TUNNELING
+void CemiServer::dataLinkLayerPrimary(DataLinkLayer& layer)
+{
+    _dataLinkLayerPrimary = &layer;
+}
+
+#endif
+uint16_t CemiServer::clientAddress() const
+{
+    return _clientAddress;
+}
+
+void CemiServer::clientAddress(uint16_t value)
+{
+    _clientAddress = value;
+}
+
+void CemiServer::dataConfirmationToTunnel(CemiFrame& frame)
+{
+    MessageCode backupMsgCode = frame.messageCode();
+
+    frame.messageCode(L_data_con);
+
+#ifdef KNX_LOG_TUNNELING
+    print("L_data_con: src: ");
+    print(frame.sourceAddress(), HEX);
+    print(" dst: ");
+    print(frame.destinationAddress(), HEX);
+
+    printHex(" frame: ", frame.data(), frame.dataLength());
+#endif
+
+#ifdef USE_USB
+    _usbTunnelInterface.sendCemiFrame(frame);
+#elif defined(KNX_TUNNELING)
+    _dataLinkLayerPrimary->dataConfirmationToTunnel(frame);
+#endif
+
+    frame.messageCode(backupMsgCode);
+}
+
+void CemiServer::dataIndicationToTunnel(CemiFrame& frame)
+{
+#ifdef USE_RF
+    bool isRf = _dataLinkLayer->mediumType() == DptMedium::KNX_RF;
+    uint8_t data[frame.dataLength() + (isRf ? 10 : 0)];
+#else
+    uint8_t data[frame.dataLength()];
+#endif
+
+#ifdef USE_RF
+
+    if (isRf)
+    {
+        data[0] = L_data_ind;     // Message Code
+        data[1] = 0x0A;           // Total additional info length
+        data[2] = 0x02;           // RF add. info: type
+        data[3] = 0x08;           // RF add. info: length
+        data[4] = frame.rfInfo(); // RF add. info: info field (batt ok, bidir)
+        pushByteArray(frame.rfSerialOrDoA(), 6, &data[5]); // RF add. info:Serial or Domain Address
+        data[11] = frame.rfLfn(); // RF add. info: link layer frame number
+        memcpy(&data[12], &((frame.data())[2]), frame.dataLength() - 2);
+    }
+    else
+    {
+#endif
+        memcpy(&data[0], frame.data(), frame.dataLength());
+#ifdef USE_RF
+    }
+
+#endif
+
+    CemiFrame tmpFrame(data, sizeof(data));
+
+#ifdef KNX_LOG_TUNNELING
+    print("ToTunnel ");
+    print("L_data_ind: src: ");
+    print(tmpFrame.sourceAddress(), HEX);
+    print(" dst: ");
+    print(tmpFrame.destinationAddress(), HEX);
+
+    printHex(" frame: ", tmpFrame.data(), tmpFrame.dataLength());
+#endif
+    tmpFrame.apdu().type();
+
+#ifdef USE_USB
+    _usbTunnelInterface.sendCemiFrame(tmpFrame);
+#elif defined(KNX_TUNNELING)
+    _dataLinkLayerPrimary->dataIndicationToTunnel(frame);
+#endif
+}
+
+void CemiServer::frameReceived(CemiFrame& frame)
+{
+    switch (frame.messageCode())
+    {
+        case L_data_req:
+        {
+            handleLData(frame);
+            break;
+        }
+
+        case M_PropRead_req:
+        {
+            handleMPropRead(frame);
+            break;
+        }
+
+        case M_PropWrite_req:
+        {
+            handleMPropWrite(frame);
+            break;
+        }
+
+        case M_FuncPropCommand_req:
+        {
+            println("M_FuncPropCommand_req not implemented");
+            break;
+        }
+
+        case M_FuncPropStateRead_req:
+        {
+            println("M_FuncPropStateRead_req not implemented");
+            break;
+        }
+
+        case M_Reset_req:
+        {
+            handleMReset(frame);
+            break;
+        }
+
+        // we should never receive these: server -> client
+        case L_data_con:
+        case L_data_ind:
+        case M_PropInfo_ind:
+        case M_PropRead_con:
+        case M_PropWrite_con:
+        case M_FuncPropCommand_con:
+
+        //case M_FuncPropStateRead_con: // same value as M_FuncPropCommand_con
+        case M_Reset_ind:
+        default:
+            break;
+    }
+}
+
+void CemiServer::handleLData(CemiFrame& frame)
+{
+    // Fill in the cEMI client address if the client sets
+    // source address to 0.
+#ifndef KNX_TUNNELING
+    //We already set the correct IA
+    if (frame.sourceAddress() == 0x0000)
+    {
+        frame.sourceAddress(_clientAddress);
+    }
+
+#endif
+
+#ifdef USE_RF
+
+    if (_dataLinkLayer->mediumType() == DptMedium::KNX_RF)
+    {
+        // Check if we have additional info for RF
+        if (((frame.data())[1] == 0x0A) && // Additional info total length: we only handle one additional info of type RF
+                ((frame.data())[2] == 0x02) && // Additional info type: RF
+                ((frame.data())[3] == 0x08) )  // Additional info length of type RF: 8 bytes (fixed)
+        {
+            frame.rfInfo((frame.data())[4]);
+
+            // Use the values provided in the RF additonal info
+            if ( ((frame.data())[5] != 0x00) || ((frame.data())[6] != 0x00) || ((frame.data())[7] != 0x00) ||
+                    ((frame.data())[8] != 0x00) || ((frame.data())[9] != 0x00) || ((frame.data())[10] != 0x00) )
+            {
+                frame.rfSerialOrDoA(&((frame.data())[5]));
+            } // else leave the nullptr as it is
+
+            frame.rfLfn((frame.data())[11]);
+        }
+
+        // If the cEMI client does not provide a link layer frame number (LFN),
+        // we use our own counter.
+        // Note: There is another link layer frame number counter inside the RF data link layer class!
+        //       That counter is solely for the local application!
+        //       If we set a LFN here, the data link layer counter is NOT used!
+        if (frame.rfLfn() == 0xFF)
+        {
+            // Set Data Link Layer Frame Number
+            frame.rfLfn(_frameNumber);
+            // Link Layer frame number counts 0..7
+            _frameNumber = (_frameNumber + 1) & 0x7;
+        }
+    }
+
+#endif
+
+#ifdef KNX_LOG_TUNNELING
+    print("L_data_req: src: ");
+    print(frame.sourceAddress(), HEX);
+    print(" dst: ");
+    print(frame.destinationAddress(), HEX);
+    printHex(" frame: ", frame.data(), frame.dataLength());
+#endif
+    _dataLinkLayer->dataRequestFromTunnel(frame);
+}
+
+void CemiServer::handleMPropRead(CemiFrame& frame)
+{
+#ifdef KNX_LOG_TUNNELING
+    print("M_PropRead_req: ");
+#endif
+
+    uint16_t objectType;
+    popWord(objectType, &frame.data()[1]);
+    uint8_t objectInstance = frame.data()[3];
+    uint8_t propertyId = frame.data()[4];
+    uint8_t numberOfElements = frame.data()[5] >> 4;
+    uint16_t startIndex = frame.data()[6] | ((frame.data()[5] & 0x0F) << 8);
+    uint8_t* data = nullptr;
+    uint32_t dataSize = 0;
+
+#ifdef KNX_LOG_TUNNELING
+    print("ObjType: ");
+    print(objectType, DEC);
+    print(" ObjInst: ");
+    print(objectInstance, DEC);
+    print(" PropId: ");
+    print(propertyId, DEC);
+    print(" NoE: ");
+    print(numberOfElements, DEC);
+    print(" startIdx: ");
+    print(startIndex, DEC);
+#endif
+
+    // propertyValueRead() allocates memory for the data! Needs to be deleted again!
+    _bau.propertyValueRead((ObjectType)objectType, objectInstance, propertyId, numberOfElements, startIndex, &data, dataSize);
+
+    // Patch result for device address in device object
+    // The cEMI server will hand out the device address + 1 to the cEMI client (e.g. ETS),
+    // so that the device and the cEMI client/server connection(tunnel) can operate simultaneously.
+    // KNX IP Interfaces which offer multiple simultaneous tunnel connections seem to operate the same way.
+    // Each tunnel has its own cEMI client address which is based on the main device address.
+    if (((ObjectType) objectType == OT_DEVICE) &&
+            (propertyId == PID_DEVICE_ADDR) &&
+            (numberOfElements == 1))
+    {
+        data[0] = (uint8_t) (_clientAddress & 0xFF);
+    }
+    else if (((ObjectType) objectType == OT_DEVICE) &&
+             (propertyId == PID_SUBNET_ADDR) &&
+             (numberOfElements == 1))
+    {
+        data[0] = (uint8_t) ((_clientAddress >> 8) & 0xFF);
+    }
+
+    if (data && dataSize && numberOfElements)
+    {
+#ifdef KNX_LOG_TUNNELING
+        printHex(" <- data: ", data, dataSize);
+#endif
+
+        // Prepare positive response
+        uint8_t responseData[7 + dataSize];
+        memcpy(responseData, frame.data(), 7);
+        memcpy(&responseData[7], data, dataSize);
+
+        CemiFrame responseFrame(responseData, sizeof(responseData));
+        responseFrame.messageCode(M_PropRead_con);
+#ifdef USE_USB
+        _usbTunnelInterface.sendCemiFrame(responseFrame);
+#elif defined(KNX_TUNNELING)
+        _dataLinkLayerPrimary->dataRequestToTunnel(responseFrame);
+#endif
+        delete[] data;
+    }
+    else
+    {
+        // Prepare negative response
+        uint8_t responseData[7 + 1];
+        memcpy(responseData, frame.data(), sizeof(responseData));
+        responseData[7] = Void_DP; // Set cEMI error code
+        responseData[5] = 0; // Set Number of elements to zero
+
+        printHex(" <- error: ", &responseData[7], 1);
+        println("");
+
+        CemiFrame responseFrame(responseData, sizeof(responseData));
+        responseFrame.messageCode(M_PropRead_con);
+#ifdef USE_USB
+        _usbTunnelInterface.sendCemiFrame(responseFrame);
+#elif defined(KNX_TUNNELING)
+        _dataLinkLayerPrimary->dataRequestToTunnel(responseFrame);
+#endif
+    }
+}
+
+void CemiServer::handleMPropWrite(CemiFrame& frame)
+{
+    print("M_PropWrite_req: ");
+
+    uint16_t objectType;
+    popWord(objectType, &frame.data()[1]);
+    uint8_t objectInstance = frame.data()[3];
+    uint8_t propertyId = frame.data()[4];
+    uint8_t numberOfElements = frame.data()[5] >> 4;
+    uint16_t startIndex = frame.data()[6] | ((frame.data()[5] & 0x0F) << 8);
+    uint8_t* requestData = &frame.data()[7];
+    uint32_t requestDataSize = frame.dataLength() - 7;
+
+    print("ObjType: ");
+    print(objectType, DEC);
+    print(" ObjInst: ");
+    print(objectInstance, DEC);
+    print(" PropId: ");
+    print(propertyId, DEC);
+    print(" NoE: ");
+    print(numberOfElements, DEC);
+    print(" startIdx: ");
+    print(startIndex, DEC);
+
+    printHex(" -> data: ", requestData, requestDataSize);
+
+    // Patch request for device address in device object
+    if (((ObjectType) objectType == OT_DEVICE) &&
+            (propertyId == PID_DEVICE_ADDR) &&
+            (numberOfElements == 1))
+    {
+        // Temporarily store new cEMI client address in memory
+        // We also be sent back if the client requests it again
+        _clientAddress = (_clientAddress & 0xFF00) | requestData[0];
+        print("cEMI client address: ");
+        println(_clientAddress, HEX);
+    }
+    else if (((ObjectType) objectType == OT_DEVICE) &&
+             (propertyId == PID_SUBNET_ADDR) &&
+             (numberOfElements == 1))
+    {
+        // Temporarily store new cEMI client address in memory
+        // We also be sent back if the client requests it again
+        _clientAddress = (_clientAddress & 0x00FF) | (requestData[0] << 8);
+        print("cEMI client address: ");
+        println(_clientAddress, HEX);
+    }
+    else
+    {
+        _bau.propertyValueWrite((ObjectType)objectType, objectInstance, propertyId, numberOfElements, startIndex, requestData, requestDataSize);
+    }
+
+    if (numberOfElements)
+    {
+        // Prepare positive response
+        uint8_t responseData[7];
+        memcpy(responseData, frame.data(), sizeof(responseData));
+
+        println(" <- no error");
+
+        CemiFrame responseFrame(responseData, sizeof(responseData));
+        responseFrame.messageCode(M_PropWrite_con);
+#ifdef USE_USB
+        _usbTunnelInterface.sendCemiFrame(responseFrame);
+#elif defined(KNX_TUNNELING)
+        _dataLinkLayerPrimary->dataRequestToTunnel(responseFrame);
+#endif
+    }
+    else
+    {
+        // Prepare negative response
+        uint8_t responseData[7 + 1];
+        memcpy(responseData, frame.data(), sizeof(responseData));
+        responseData[7] = Illegal_Command; // Set cEMI error code
+        responseData[5] = 0; // Set Number of elements to zero
+
+        printHex(" <- error: ", &responseData[7], 1);
+        println("");
+
+        CemiFrame responseFrame(responseData, sizeof(responseData));
+        responseFrame.messageCode(M_PropWrite_con);
+#ifdef USE_USB
+        _usbTunnelInterface.sendCemiFrame(responseFrame);
+#elif defined(KNX_TUNNELING)
+        _dataLinkLayerPrimary->dataRequestToTunnel(responseFrame);
+#endif
+    }
+}
+
+void CemiServer::handleMReset(CemiFrame& frame)
+{
+    println("M_Reset_req: sending M_Reset_ind");
+    // A real device reset does not work for USB or KNXNET/IP.
+    // Thus, M_Reset_ind is NOT mandatory for USB and KNXNET/IP.
+    // We just save all data to the EEPROM
+    _bau.writeMemory();
+    // Prepare response
+    uint8_t responseData[1];
+    CemiFrame responseFrame(responseData, sizeof(responseData));
+    responseFrame.messageCode(M_Reset_ind);
+#ifdef USE_USB
+    _usbTunnelInterface.sendCemiFrame(responseFrame);
+#elif defined(KNX_TUNNELING)
+    _dataLinkLayerPrimary->dataRequestToTunnel(responseFrame);
+#endif
+}
+
+void CemiServer::loop()
+{
+#ifdef USE_USB
+    _usbTunnelInterface.loop();
+#endif
+}
+
+#endif

components/knx/src/knx/cemi_server.h

@@ -0,0 +1,68 @@
+#pragma once
+
+#include "config.h"
+#ifdef USE_CEMI_SERVER
+
+#include <stdint.h>
+#include "knx_types.h"
+#include "usb_tunnel_interface.h"
+
+class BauSystemB;
+class DataLinkLayer;
+class CemiFrame;
+
+/**
+ * This is an implementation of the cEMI server as specified in @cite knx:3/6/3.
+ * Overview on page 57.
+ * It provides methods for the BusAccessUnit to do different things and translates this
+ * call to an cEMI frame and calls the correct method of the data link layer.
+ * It also takes calls from data link layer, decodes the submitted cEMI frames and calls the corresponding
+ * methods of the BusAccessUnit class.
+ */
+class CemiServer
+{
+    public:
+        /**
+         * The constructor.
+         * @param bau methods are called here depending of the content of the APDU
+         */
+        CemiServer(BauSystemB& bau);
+
+        void dataLinkLayer(DataLinkLayer& layer);
+#ifdef KNX_TUNNELING
+        void dataLinkLayerPrimary(DataLinkLayer& layer);
+#endif
+
+        // from data link layer
+        // Only L_Data service
+        void dataIndicationToTunnel(CemiFrame& frame);
+        void dataConfirmationToTunnel(CemiFrame& frame);
+
+        // From tunnel interface
+        void frameReceived(CemiFrame& frame);
+
+        uint16_t clientAddress() const;
+        void clientAddress(uint16_t value);
+
+        void loop();
+
+    private:
+        uint16_t _clientAddress = 0;
+        uint8_t _frameNumber = 0;
+
+        void handleLData(CemiFrame& frame);
+        void handleMPropRead(CemiFrame& frame);
+        void handleMPropWrite(CemiFrame& frame);
+        void handleMReset(CemiFrame& frame);
+
+        DataLinkLayer* _dataLinkLayer = nullptr;
+#ifdef KNX_TUNNELING
+        DataLinkLayer* _dataLinkLayerPrimary = nullptr;
+#endif
+        BauSystemB& _bau;
+#ifdef USE_USB
+        UsbTunnelInterface _usbTunnelInterface;
+#endif
+};
+
+#endif

components/knx/src/knx/cemi_server_object.cpp

@@ -0,0 +1,61 @@
+#include "config.h"
+#ifdef USE_CEMI_SERVER
+
+#include <cstring>
+#include "cemi_server_object.h"
+#include "bits.h"
+#include "data_property.h"
+
+CemiServerObject::CemiServerObject()
+{
+    Property* properties[] =
+    {
+        new DataProperty( PID_OBJECT_TYPE, false, PDT_UNSIGNED_INT, 1, ReadLv3 | WriteLv0, (uint16_t)OT_CEMI_SERVER ),
+        new DataProperty( PID_MEDIUM_TYPE, false, PDT_BITSET16, 1, ReadLv3 | WriteLv0, (uint16_t)0),
+        new DataProperty( PID_COMM_MODE, false, PDT_ENUM8, 1, ReadLv3 | WriteLv0, (uint16_t)0),
+        new DataProperty( PID_COMM_MODES_SUPPORTED, false, PDT_BITSET16, 1, ReadLv3 | WriteLv0, (uint16_t)0x100),
+        new DataProperty( PID_MEDIUM_AVAILABILITY, false, PDT_BITSET16, 1, ReadLv3 | WriteLv0, (uint16_t)0),
+        // cEMI additional info types supported by this cEMI server: only 0x02 (RF Control Octet and Serial Number or DoA)
+        new DataProperty( PID_ADD_INFO_TYPES, false, PDT_ENUM8, 1, ReadLv3 | WriteLv0, (uint8_t)0x02)
+    };
+    initializeProperties(sizeof(properties), properties);
+}
+
+void CemiServerObject::setMediumTypeAsSupported(DptMedium dptMedium)
+{
+    uint16_t mediaTypesSupported;
+    property(PID_MEDIUM_TYPE)->read(mediaTypesSupported);
+
+    switch (dptMedium)
+    {
+        case DptMedium::KNX_IP:
+            mediaTypesSupported |= 1 << 1;
+            break;
+
+        case DptMedium::KNX_RF:
+            mediaTypesSupported |= 1 << 4;
+            break;
+
+        case DptMedium::KNX_TP1:
+            mediaTypesSupported |= 1 << 5;
+            break;
+
+        case DptMedium::KNX_PL110:
+            mediaTypesSupported |= 1 << 2;
+            break;
+    }
+
+    property(PID_MEDIUM_TYPE)->write(mediaTypesSupported);
+    // We also set the medium as available too
+    property(PID_MEDIUM_AVAILABILITY)->write(mediaTypesSupported);
+}
+
+void CemiServerObject::clearSupportedMediaTypes()
+{
+    property(PID_MEDIUM_TYPE)->write((uint16_t) 0);
+    // We also set the medium as not available too
+    property(PID_MEDIUM_AVAILABILITY)->write((uint16_t) 0);
+}
+
+#endif
+

components/knx/src/knx/cemi_server_object.h

@@ -0,0 +1,17 @@
+#pragma once
+
+#include "config.h"
+#ifdef USE_CEMI_SERVER
+
+#include "interface_object.h"
+
+class CemiServerObject: public InterfaceObject
+{
+    public:
+        CemiServerObject();
+
+        void setMediumTypeAsSupported(DptMedium dptMedium);
+        void clearSupportedMediaTypes();
+};
+
+#endif

components/knx/src/knx/config.h

@@ -0,0 +1,84 @@
+#pragma once
+
+#ifndef NO_KNX_CONFIG
+
+    #ifdef ARDUINO_ARCH_SAMD
+        #define SPI_SS_PIN 10
+        #define GPIO_GDO2_PIN 9
+        #define GPIO_GDO0_PIN 7
+    #else                    // Linux Platform (Raspberry Pi)
+        #define SPI_SS_PIN 8     // GPIO 8  (SPI_CE0_N) -> WiringPi: 10 -> Pin number on header: 24
+        #define GPIO_GDO2_PIN 25 // GPIO 25 (GPIO_GEN6) -> WiringPi: 6  -> Pin number on header: 22
+        #define GPIO_GDO0_PIN 24 // GPIO 24 (GPIO_GEN5) -> WiringPi: 5  -> Pin number on header: 18
+    #endif
+
+    // Normal devices
+    // TP1: 0x07B0
+    // RF: 0x27B0
+    // IP: 0x57B0
+    //#define MASK_VERSION 0x07B0
+    //#define MASK_VERSION 0x27B0
+    //#define MASK_VERSION 0x57B0
+
+    // Couplers
+    // IP/TP1: 0x091A
+    // TP1/RF: 0x2920
+    //#define MASK_VERSION 0x091A
+    //#define MASK_VERSION 0x2920
+
+    // Data Linklayer Driver Options
+    #if MASK_VERSION == 0x07B0
+        #define USE_TP
+    #endif
+
+    #if MASK_VERSION == 0x27B0
+        #define USE_RF
+    #endif
+
+    #if MASK_VERSION == 0x57B0
+        #define USE_IP
+    #endif
+
+    #if MASK_VERSION == 0x091A
+        #define USE_TP
+        #define USE_IP
+    #endif
+
+    #if MASK_VERSION == 0x2920
+        #define USE_TP
+        #define USE_RF
+    #endif
+
+    // cEMI options
+    //#define USE_USB
+    //#define USE_CEMI_SERVER
+    #if defined(USE_USB) || defined(KNX_TUNNELING)
+        #define USE_CEMI_SERVER
+    #endif
+
+    // KNX Data Secure Options
+    // Define via a compiler -D flag if required
+    // #define USE_DATASECURE
+
+    // option to have GroupObjects (KO in German) use 8 bytes mangement information RAM instead of 19 bytes
+    // see knx-demo-small-go for example
+    // this option might be also set via compiler flag -DSMALL_GROUPOBJECT if required
+    //#define SMALL_GROUPOBJECT
+
+    // Some defines to reduce footprint
+    // Do not perform conversion from KNXValue(const char*) to other types, it mainly avoids the expensive strtod
+    //#define KNX_NO_STRTOx_CONVERSION
+    // Do not print messages
+    //#define KNX_NO_PRINT
+    // Do not use SPI (Arduino variants)
+    //#define KNX_NO_SPI
+    // Do not use the default UART (Arduino variants), it must be defined by ArduinoPlatform::knxUart
+    // (combined with other flags (HWSERIAL_NONE for stm32) - avoid allocation of RX/TX buffers for all serial lines)
+    //#define KNX_NO_DEFAULT_UART
+
+#endif
+
+#if !defined(MASK_VERSION)
+    #error MASK_VERSION must be defined! See config.h for possible values!
+#endif
+

components/knx/src/knx/data_link_layer.cpp

@@ -0,0 +1,309 @@
+#include "data_link_layer.h"
+
+#include "bits.h"
+#include "platform.h"
+#include "device_object.h"
+#include "cemi_server.h"
+#include "cemi_frame.h"
+
+
+void DataLinkLayerCallbacks::activity(uint8_t info)
+{
+    if (_activityCallback)
+        _activityCallback(info);
+}
+
+void DataLinkLayerCallbacks::setActivityCallback(ActivityCallback activityCallback)
+{
+    _activityCallback = activityCallback;
+}
+
+DataLinkLayer::DataLinkLayer(DeviceObject& devObj, NetworkLayerEntity& netLayerEntity, Platform& platform) :
+    _deviceObject(devObj), _networkLayerEntity(netLayerEntity), _platform(platform)
+{
+#ifdef KNX_ACTIVITYCALLBACK
+    _netIndex = netLayerEntity.getEntityIndex();
+#endif
+}
+
+#ifdef USE_CEMI_SERVER
+
+void DataLinkLayer::cemiServer(CemiServer& cemiServer)
+{
+    _cemiServer = &cemiServer;
+}
+
+#ifdef KNX_TUNNELING
+void DataLinkLayer::dataRequestToTunnel(CemiFrame& frame)
+{
+    println("default dataRequestToTunnel");
+}
+
+void DataLinkLayer::dataConfirmationToTunnel(CemiFrame& frame)
+{
+    println("default dataConfirmationToTunnel");
+}
+
+void DataLinkLayer::dataIndicationToTunnel(CemiFrame& frame)
+{
+    println("default dataIndicationToTunnel");
+}
+
+bool DataLinkLayer::isTunnelAddress(uint16_t addr)
+{
+    println("default IsTunnelAddress");
+    return false;
+}
+#endif
+
+void DataLinkLayer::dataRequestFromTunnel(CemiFrame& frame)
+{
+    _cemiServer->dataConfirmationToTunnel(frame);
+
+    frame.messageCode(L_data_ind);
+
+    // Send to local stack ( => cemiServer for potential other tunnel and network layer for routing)
+    frameReceived(frame);
+
+#ifdef KNX_TUNNELING
+    // TunnelOpti
+    // Optimize performance when receiving unicast data over tunnel wich is not meant to be used on the physical TP line
+    // dont send to knx when
+    // frame is individual adressed AND
+    // destionation == PA of Tunnel-Server  OR
+    // destination == PA of a Tunnel OR (TODO)
+    // destination is not the TP/secondary line/segment but IP/primary (TODO)
+
+    if (frame.addressType() == AddressType::IndividualAddress)
+    {
+        if (frame.destinationAddress() == _deviceObject.individualAddress())
+            return;
+
+        if (isRoutedPA(frame.destinationAddress()))
+            return;
+
+        if (isTunnelingPA(frame.destinationAddress()))
+            return;
+    }
+
+#endif
+
+    // Send to KNX medium
+    sendFrame(frame);
+}
+#endif
+
+void DataLinkLayer::dataRequest(AckType ack, AddressType addrType, uint16_t destinationAddr, uint16_t sourceAddr, FrameFormat format, Priority priority, NPDU& npdu)
+{
+    // Normal data requests and broadcasts will always be transmitted as (domain) broadcast with domain address for open media (e.g. RF medium)
+    // The domain address "simulates" a closed medium (such as TP) on an open medium (such as RF or PL)
+    // See 3.2.5 p.22
+    sendTelegram(npdu, ack, destinationAddr, addrType, sourceAddr, format, priority, Broadcast);
+}
+
+void DataLinkLayer::systemBroadcastRequest(AckType ack, FrameFormat format, Priority priority, NPDU& npdu, uint16_t sourceAddr)
+{
+    // System Broadcast requests will always be transmitted as broadcast with KNX serial number for open media (e.g. RF medium)
+    // See 3.2.5 p.22
+    sendTelegram(npdu, ack, 0, GroupAddress, sourceAddr, format, priority, SysBroadcast);
+}
+
+void DataLinkLayer::dataConReceived(CemiFrame& frame, bool success)
+{
+    MessageCode backupMsgCode = frame.messageCode();
+    frame.messageCode(L_data_con);
+    frame.confirm(success ? ConfirmNoError : ConfirmError);
+    AckType ack = frame.ack();
+    AddressType addrType = frame.addressType();
+    uint16_t destination = frame.destinationAddress();
+    uint16_t source = frame.sourceAddress();
+    FrameFormat type = frame.frameType();
+    Priority priority = frame.priority();
+    NPDU& npdu = frame.npdu();
+    SystemBroadcast systemBroadcast = frame.systemBroadcast();
+
+#ifdef USE_CEMI_SERVER
+
+    // if the confirmation was caused by a tunnel request then
+    // do not send it to the local stack
+    if (frame.sourceAddress() == _cemiServer->clientAddress())
+    {
+        // Stop processing here and do NOT send it the local network layer
+        return;
+    }
+
+#endif
+
+    if (addrType == GroupAddress && destination == 0)
+        if (systemBroadcast == SysBroadcast)
+            _networkLayerEntity.systemBroadcastConfirm(ack, type, priority, source, npdu, success);
+        else
+            _networkLayerEntity.broadcastConfirm(ack, type, priority, source, npdu, success);
+    else
+        _networkLayerEntity.dataConfirm(ack, addrType, destination, type, priority, source, npdu, success);
+
+    frame.messageCode(backupMsgCode);
+}
+
+void DataLinkLayer::frameReceived(CemiFrame& frame)
+{
+    AckType ack = frame.ack();
+    AddressType addrType = frame.addressType();
+    uint16_t destination = frame.destinationAddress();
+    uint16_t source = frame.sourceAddress();
+    FrameFormat type = frame.frameType();
+    Priority priority = frame.priority();
+    NPDU& npdu = frame.npdu();
+    uint16_t ownAddr = _deviceObject.individualAddress();
+    SystemBroadcast systemBroadcast = frame.systemBroadcast();
+
+#ifdef USE_CEMI_SERVER
+    // Do not send our own message back to the tunnel
+#ifdef KNX_TUNNELING
+
+    //we dont need to check it here
+    // send inbound frames to the tunnel if we are the secondary (TP) interface
+    if ( _networkLayerEntity.getEntityIndex() == 1)
+        _cemiServer->dataIndicationToTunnel(frame);
+
+#else
+
+    if (frame.sourceAddress() != _cemiServer->clientAddress())
+    {
+        _cemiServer->dataIndicationToTunnel(frame);
+    }
+
+#endif
+#endif
+
+    // print("Frame received destination: ");
+    // print(destination, 16);
+    // println();
+    // print("frameReceived: frame valid? :");
+    // println(npdu.frame().valid() ? "true" : "false");
+    if (source == ownAddr)
+        _deviceObject.individualAddressDuplication(true);
+
+    if (addrType == GroupAddress && destination == 0)
+    {
+        if (systemBroadcast == SysBroadcast)
+            _networkLayerEntity.systemBroadcastIndication(ack, type, npdu, priority, source);
+        else
+            _networkLayerEntity.broadcastIndication(ack, type, npdu, priority, source);
+    }
+    else
+    {
+        _networkLayerEntity.dataIndication(ack, addrType, destination, type, npdu, priority, source);
+    }
+}
+
+bool DataLinkLayer::sendTelegram(NPDU& npdu, AckType ack, uint16_t destinationAddr, AddressType addrType, uint16_t sourceAddr, FrameFormat format, Priority priority, SystemBroadcast systemBroadcast, bool doNotRepeat)
+{
+    CemiFrame& frame = npdu.frame();
+    // print("Send telegram frame valid ?: ");
+    // println(frame.valid()?"true":"false");
+    frame.messageCode(L_data_ind);
+    frame.destinationAddress(destinationAddr);
+    frame.sourceAddress(sourceAddr);
+    frame.addressType(addrType);
+    frame.priority(priority);
+    frame.repetition(doNotRepeat ? NoRepitiion : RepetitionAllowed);
+    frame.systemBroadcast(systemBroadcast);
+
+    if (npdu.octetCount() <= 15)
+        frame.frameType(StandardFrame);
+    else
+        frame.frameType(format);
+
+
+    if (!frame.valid())
+    {
+        println("invalid frame");
+        return false;
+    }
+
+    //    if (frame.npdu().octetCount() > 0)
+    //    {
+    //        _print("<- DLL ");
+    //        frame.apdu().printPDU();
+    //    }
+
+    bool sendTheFrame = true;
+    bool success = true;
+
+#ifdef KNX_TUNNELING
+    // TunnelOpti
+    // Optimize performance when sending unicast data over tunnel wich is not meant to be used on the physical TP line
+    // dont send to knx when
+    // a) we are the secondary interface (e.g. TP) AND
+    // b) destination == PA of a Tunnel (TODO)
+
+    if (_networkLayerEntity.getEntityIndex() == 1 && addrType == AddressType::IndividualAddress)   // don't send to tp if we are the secondary (TP) interface AND the destination is a tunnel-PA
+    {
+        if (isTunnelingPA(destinationAddr))
+            sendTheFrame = false;
+    }
+
+#endif
+
+    // The data link layer might be an open media link layer
+    // and will setup rfSerialOrDoA, rfInfo and rfLfn that we also
+    // have to send through the cEMI server tunnel
+    // Thus, reuse the modified cEMI frame as "frame" is only passed by reference here!
+    if (sendTheFrame)
+        success = sendFrame(frame);
+
+#ifdef USE_CEMI_SERVER
+    CemiFrame tmpFrame(frame.data(), frame.totalLenght());
+    // We can just copy the pointer for rfSerialOrDoA as sendFrame() sets
+    // a pointer to const uint8_t data in either device object (serial) or
+    // RF medium object (domain address)
+#ifdef USE_RF
+    tmpFrame.rfSerialOrDoA(frame.rfSerialOrDoA());
+    tmpFrame.rfInfo(frame.rfInfo());
+    tmpFrame.rfLfn(frame.rfLfn());
+#endif
+    tmpFrame.confirm(ConfirmNoError);
+
+    if (_networkLayerEntity.getEntityIndex() == 1)   // only send to tunnel if we are the secondary (TP) interface
+        _cemiServer->dataIndicationToTunnel(tmpFrame);
+
+#endif
+
+    return success;
+}
+
+uint8_t* DataLinkLayer::frameData(CemiFrame& frame)
+{
+    return frame._data;
+}
+
+#ifdef KNX_TUNNELING
+bool DataLinkLayer::isTunnelingPA(uint16_t pa)
+{
+    uint8_t numAddresses = 0;
+    uint16_t* addresses = _ipParameters->additionalIndivualAddresses(numAddresses);
+
+    for (uint8_t i = 0; i < numAddresses; i++)
+    {
+        if (pa == addresses[i])
+            return true;
+    }
+
+    return false;
+}
+
+bool DataLinkLayer::isRoutedPA(uint16_t pa)
+{
+    uint16_t ownpa = _deviceObject.individualAddress();
+    uint16_t own_sm;
+
+    if ((ownpa & 0x0F00) == 0x0)
+        own_sm = 0xF000;
+    else
+        own_sm = 0xFF00;
+
+    return (pa & own_sm) != ownpa;
+}
+#endif
+

components/knx/src/knx/data_link_layer.h

@@ -0,0 +1,77 @@
+#pragma once
+
+#include "config.h"
+
+#include <stdint.h>
+#include "device_object.h"
+#include "knx_types.h"
+#include "network_layer_entity.h"
+#ifdef KNX_TUNNELING
+    #include "ip_parameter_object.h"
+#endif
+#include "cemi_server.h"
+#include "bau.h"
+
+class Platform;
+
+typedef void (*ActivityCallback)(uint8_t info);
+
+class DataLinkLayerCallbacks
+{
+    protected:
+        ActivityCallback _activityCallback = nullptr;
+    public:
+        virtual ~DataLinkLayerCallbacks() = default;
+        virtual void activity(uint8_t info);
+        virtual void setActivityCallback(ActivityCallback activityCallback);
+};
+
+class DataLinkLayer
+{
+    public:
+        DataLinkLayer(DeviceObject& devObj, NetworkLayerEntity& netLayerEntity,
+                      Platform& platform);
+
+#ifdef USE_CEMI_SERVER
+        // from tunnel
+        void cemiServer(CemiServer& cemiServer);
+        void dataRequestFromTunnel(CemiFrame& frame);
+#ifdef KNX_TUNNELING
+        virtual void dataRequestToTunnel(CemiFrame& frame);
+        virtual void dataConfirmationToTunnel(CemiFrame& frame);
+        virtual void dataIndicationToTunnel(CemiFrame& frame);
+        virtual bool isTunnelAddress(uint16_t addr);
+        void ipParameterObject(IpParameterObject* object);
+#endif
+#endif
+
+        // from network layer
+        void dataRequest(AckType ack, AddressType addrType, uint16_t destinationAddr, uint16_t sourceAddr, FrameFormat format,
+                         Priority priority, NPDU& npdu);
+        void systemBroadcastRequest(AckType ack, FrameFormat format, Priority priority, NPDU& npdu, uint16_t sourceAddr);
+        virtual void loop() = 0;
+        virtual void enabled(bool value) = 0;
+        virtual bool enabled() const = 0;
+        virtual DptMedium mediumType() const = 0;
+
+    protected:
+        void frameReceived(CemiFrame& frame);
+        void dataConReceived(CemiFrame& frame, bool success);
+        bool sendTelegram(NPDU& npdu, AckType ack, uint16_t destinationAddr, AddressType addrType, uint16_t sourceAddr, FrameFormat format, Priority priority, SystemBroadcast systemBroadcast, bool doNotRepeat = false);
+        virtual bool sendFrame(CemiFrame& frame) = 0;
+        uint8_t* frameData(CemiFrame& frame);
+        DeviceObject& _deviceObject;
+        NetworkLayerEntity& _networkLayerEntity;
+        Platform& _platform;
+#ifdef USE_CEMI_SERVER
+        CemiServer* _cemiServer;
+#endif
+#ifdef KNX_ACTIVITYCALLBACK
+        uint8_t _netIndex = 0;
+#endif
+#ifdef KNX_TUNNELING
+        bool isTunnelingPA(uint16_t pa);
+        bool isRoutedPA(uint16_t pa);
+        IpParameterObject* _ipParameters;
+#endif
+};

components/knx/src/knx/data_property.cpp

@@ -0,0 +1,168 @@
+#include "data_property.h"
+#include "bits.h"
+
+#include <cstring>
+
+uint8_t DataProperty::read(uint16_t start, uint8_t count, uint8_t* data) const
+{
+    if (start == 0)
+    {
+        pushWord(_currentElements, data);
+        return 1;
+    }
+
+    if (count == 0 || _currentElements == 0 || start > _currentElements || count > _currentElements - start + 1)
+        return 0;
+
+
+    // we start counting with zero
+    start -= 1;
+
+    // data is already big enough to hold the data
+    memcpy(data, _data + (start * ElementSize()), count * ElementSize());
+
+    return count;
+}
+
+uint8_t DataProperty::write(uint16_t start, uint8_t count, const uint8_t* data)
+{
+    if (count == 0 || start > _maxElements || start + count > _maxElements + 1)
+        return 0;
+
+    if (start == 0)
+    {
+        if (count == 1 && data[0] == 0 && data[1] == 0)
+        {
+            // reset _data
+            _currentElements = 0;
+
+            if (_data)
+            {
+                delete[] _data;
+                _data = nullptr;
+            }
+
+            return 1;
+        }
+        else
+            return 0;
+    }
+
+    // we start counting with zero
+    start -= 1;
+
+    if (start + count > _currentElements)
+    {
+        // reallocate memory for _data
+        uint8_t* oldData = _data;
+        size_t oldDataSize = _currentElements * ElementSize();
+
+        size_t newDataSize = (start + count) * ElementSize();
+        _data = new uint8_t[newDataSize];
+        memset(_data, 0, newDataSize);
+
+        if (oldData != nullptr)
+        {
+            memcpy(_data, oldData, oldDataSize);
+            delete[] oldData;
+        }
+
+        _currentElements = start + count;
+    }
+
+    memcpy(_data + (start * ElementSize()), data, count * ElementSize());
+
+    return count;
+}
+
+DataProperty::DataProperty(PropertyID id, bool writeEnable, PropertyDataType type,
+                           uint16_t maxElements, uint8_t access)
+    : Property(id, writeEnable, type, maxElements, access)
+{}
+
+DataProperty::~DataProperty()
+{
+    if (_data)
+        delete[] _data;
+}
+
+DataProperty::DataProperty(PropertyID id, bool writeEnable, PropertyDataType type,
+                           uint16_t maxElements, uint8_t access, uint16_t value)
+    : Property(id, writeEnable, type, maxElements, access)
+{
+    Property::write(value);
+}
+
+DataProperty::DataProperty(PropertyID id, bool writeEnable, PropertyDataType type,
+                           uint16_t maxElements, uint8_t access, uint32_t value)
+    : Property(id, writeEnable, type, maxElements, access)
+{
+    Property::write(value);
+}
+
+DataProperty::DataProperty(PropertyID id, bool writeEnable, PropertyDataType type,
+                           uint16_t maxElements, uint8_t access, uint8_t value)
+    : Property(id, writeEnable, type, maxElements, access)
+{
+    Property::write(value);
+}
+
+DataProperty::DataProperty(PropertyID id, bool writeEnable, PropertyDataType type,
+                           uint16_t maxElements, uint8_t access, const uint8_t* value)
+    : Property(id, writeEnable, type, maxElements, access)
+{
+    Property::write(value);
+}
+
+uint16_t DataProperty::saveSize()
+{
+    return sizeof(_currentElements) + _maxElements * ElementSize();
+}
+
+
+const uint8_t* DataProperty::restore(const uint8_t* buffer)
+{
+    uint16_t elements = 0;
+    buffer = popWord(elements, buffer);
+
+    if (elements != _currentElements)
+    {
+        if (_data != nullptr)
+            delete[] _data;
+
+        _data = new uint8_t[elements * ElementSize()];
+        _currentElements = elements;
+    }
+
+    if (elements > 0)
+        buffer = popByteArray(_data, elements * ElementSize(), buffer);
+
+    return buffer;
+}
+
+
+uint8_t* DataProperty::save(uint8_t* buffer)
+{
+    buffer = pushWord(_currentElements, buffer);
+
+    if (_currentElements > 0)
+        buffer = pushByteArray(_data, _currentElements * ElementSize(), buffer);
+
+    return buffer;
+}
+
+
+const uint8_t* DataProperty::data()
+{
+    return _data;
+}
+
+const uint8_t* DataProperty::data(uint16_t elementIndex)
+{
+    if ((elementIndex == 0) || (elementIndex > _currentElements))
+        return nullptr;
+
+    elementIndex -= 1; // Starting from 0
+    uint16_t offset = elementIndex * ElementSize();
+    return _data + offset;
+}

components/knx/src/knx/data_property.h

@@ -0,0 +1,25 @@
+#pragma once
+
+#include "property.h"
+
+class DataProperty : public Property
+{
+    public:
+        DataProperty(PropertyID id, bool writeEnable, PropertyDataType type, uint16_t maxElements, uint8_t access);
+        DataProperty(PropertyID id, bool writeEnable, PropertyDataType type, uint16_t maxElements, uint8_t access, uint8_t value);
+        DataProperty(PropertyID id, bool writeEnable, PropertyDataType type, uint16_t maxElements, uint8_t access, uint16_t value);
+        DataProperty(PropertyID id, bool writeEnable, PropertyDataType type, uint16_t maxElements, uint8_t access, uint32_t value);
+        DataProperty(PropertyID id, bool writeEnable, PropertyDataType type, uint16_t maxElements, uint8_t access, const uint8_t* value);
+        ~DataProperty() override;
+        uint8_t read(uint16_t start, uint8_t count, uint8_t* data) const override;
+        uint8_t write(uint16_t start, uint8_t count, const uint8_t* data) override;
+        uint8_t* save(uint8_t* buffer) override;
+        const uint8_t* restore(const uint8_t* buffer) override;
+        uint16_t saveSize() override;
+        const uint8_t* data();
+        const uint8_t* data(uint16_t elementIndex);
+
+    private:
+        uint16_t _currentElements = 0;
+        uint8_t* _data = nullptr;
+};

components/knx/src/knx/datapoint_types.cpp

@@ -0,0 +1,64 @@
+/*
+ *  datapoint_types.h - Conversion functions for datapoint types.
+ *
+ *  Copyright (c) 2014 Stefan Taferner <stefan.taferner@gmx.at>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 3 as
+ *  published by the Free Software Foundation.
+ */
+
+#include "datapoint_types.h"
+#include <stdint.h>
+
+// Sign for a negative DPT9 float value
+#define DPT_FLOAT_NEG_SIGN 0x8000
+
+
+uint16_t dptToFloat(int32_t value)
+{
+    uint16_t exp = 0;
+
+    if (value < -67108864 || value > 67076096)
+        return 0x7fff;
+
+    if (value < 0)
+    {
+        while (value < -2048)
+        {
+            value >>= 1;
+            ++exp;
+        }
+
+        return DPT_FLOAT_NEG_SIGN | (((int32_t) value) & 2047) | (exp << 11);
+    }
+    else
+    {
+        while (value > 2047)
+        {
+            value >>= 1;
+            ++exp;
+        }
+
+        return value | (exp << 11);
+    }
+}
+
+int32_t dptFromFloat(uint16_t dptValue)
+{
+    uint16_t exp = (dptValue >> 11) & 15;
+    int32_t value;
+
+    if (dptValue == 0x7fff)
+        return INVALID_DPT_FLOAT;
+
+    if (dptValue >= 0x8000)
+        value = dptValue | (-1L & ~2047);
+    else
+        value = dptValue & 2047;
+
+    for (; exp; --exp)
+        value <<= 1;
+
+    return value;
+}

components/knx/src/knx/datapoint_types.h

@@ -0,0 +1,37 @@
+/*
+ *  datapoint_types.h - Conversion functions for datapoint types.
+ *
+ *  Copyright (c) 2014 Stefan Taferner <stefan.taferner@gmx.at>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 3 as
+ *  published by the Free Software Foundation.
+ */
+
+#pragma once
+#include <stdint.h>
+
+/**
+ * An invalid 2 uint8_t float (DPT9/EIS5).
+ * To be used for dptToFloat() and dptFromFloat().
+ */
+#define INVALID_DPT_FLOAT  2147483647U
+
+/**
+ * Convert a value from uint32_t to 2 uint8_t float (DPT9/EIS5). The possible range
+ * of the values is -67108864 to 67076096.
+ *
+ * @param value - the value to convert.
+ *                Use INVALID_DPT_FLOAT for the DPT9 "invalid data" value.
+ * @return The 2 uint8_t float (DPT9/EIS5).
+ */
+uint16_t dptToFloat(int32_t value);
+
+/**
+ * Convert a value from 2 uint8_t float (DPT9/EIS5) to integer.
+ *
+ * @param dptValue - the 2 uint8_t float (DPT9/EIS5) to convert
+ * @return The value as integer, or INVALID_DPT_FLOAT for the
+ *         DPT9 "invalid data" value.
+ */
+int32_t dptFromFloat(uint16_t dptValue);

components/knx/src/knx/device_object.cpp

@@ -0,0 +1,294 @@
+#include <cstring>
+#include "device_object.h"
+#include "bits.h"
+#include "data_property.h"
+#include "callback_property.h"
+#include "config.h"
+
+#define LEN_KNX_SERIAL 6
+
+DeviceObject::DeviceObject()
+{
+    // Default to KNXA (0xFA)
+    // Note: ETS does not accept a SN 00FA00000000 in data secure mode.
+    //       ETS says that 00FA00000000 looks "suspicious" in the log file.
+    uint8_t serialNumber[] = {0x00, 0xFA, 0x01, 0x02, 0x03, 0x04};
+    uint8_t hardwareType[] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
+
+    Property* properties[] =
+    {
+        new DataProperty(PID_OBJECT_TYPE, false, PDT_UNSIGNED_INT, 1, ReadLv3 | WriteLv0, (uint16_t)OT_DEVICE),
+        new DataProperty(PID_SERIAL_NUMBER, false, PDT_GENERIC_06, 1, ReadLv3 | WriteLv0, serialNumber),
+        new CallbackProperty<DeviceObject>(this, PID_MANUFACTURER_ID, false, PDT_UNSIGNED_INT, 1, ReadLv3 | WriteLv0,
+                                           [](DeviceObject * io, uint16_t start, uint8_t count, uint8_t* data) -> uint8_t
+        {
+            if (start == 0)
+            {
+                uint16_t currentNoOfElements = 1;
+                pushWord(currentNoOfElements, data);
+                return 1;
+            }
+
+            pushByteArray(io->propertyData(PID_SERIAL_NUMBER), 2, data);
+            return 1;
+        }),
+        new DataProperty(PID_DEVICE_CONTROL, true, PDT_BITSET8, 1, ReadLv3 | WriteLv3, (uint8_t)0),
+        new DataProperty(PID_ORDER_INFO, false, PDT_GENERIC_10, 1, ReadLv3 | WriteLv0),
+        new DataProperty(PID_VERSION, false, PDT_VERSION, 1, ReadLv3 | WriteLv0, (uint16_t)3),
+        new DataProperty(PID_ROUTING_COUNT, true, PDT_UNSIGNED_CHAR, 1, ReadLv3 | WriteLv3, (uint8_t)(6 << 4)),
+        new CallbackProperty<DeviceObject>(this, PID_PROG_MODE, true, PDT_BITSET8, 1, ReadLv3 | WriteLv3,
+                                           [](DeviceObject * io, uint16_t start, uint8_t count, uint8_t* data) -> uint8_t
+        {
+            if (start == 0)
+            {
+                uint16_t currentNoOfElements = 1;
+                pushWord(currentNoOfElements, data);
+                return 1;
+            }
+
+            *data = io->_prgMode;
+            return 1;
+        },
+        [](DeviceObject * io, uint16_t start, uint8_t count, const uint8_t* data) -> uint8_t
+        {
+            if (start == 0)
+                return 1;
+
+            io->_prgMode = *data;
+            return 1;
+        }),
+        new DataProperty(PID_MAX_APDU_LENGTH, false, PDT_UNSIGNED_INT, 1, ReadLv3 | WriteLv0, (uint16_t)254),
+        new CallbackProperty<DeviceObject>(this, PID_SUBNET_ADDR, false, PDT_UNSIGNED_CHAR, 1, ReadLv3 | WriteLv0,
+                                           [](DeviceObject * io, uint16_t start, uint8_t count, uint8_t* data) -> uint8_t
+        {
+            if (start == 0)
+            {
+                uint16_t currentNoOfElements = 1;
+                pushWord(currentNoOfElements, data);
+                return 1;
+            }
+
+            *data = ((io->_ownAddress >> 8) & 0xff);
+
+            return 1;
+        }),
+        new CallbackProperty<DeviceObject>(this, PID_DEVICE_ADDR, false, PDT_UNSIGNED_CHAR, 1, ReadLv3 | WriteLv0,
+                                           [](DeviceObject * io, uint16_t start, uint8_t count, uint8_t* data) -> uint8_t
+        {
+            if (start == 0)
+            {
+                uint16_t currentNoOfElements = 1;
+                pushWord(currentNoOfElements, data);
+                return 1;
+            }
+
+            *data = (io->_ownAddress & 0xff);
+            return 1;
+        }),
+        new DataProperty(PID_IO_LIST, false, PDT_UNSIGNED_INT, 8, ReadLv3 | WriteLv0),
+        new DataProperty(PID_HARDWARE_TYPE, true, PDT_GENERIC_06, 1, ReadLv3 | WriteLv3, hardwareType),
+        new DataProperty(PID_DEVICE_DESCRIPTOR, false, PDT_GENERIC_02, 1, ReadLv3 | WriteLv0),
+#ifdef USE_RF
+        new DataProperty(PID_RF_DOMAIN_ADDRESS_CEMI_SERVER, true, PDT_GENERIC_06, 1, ReadLv3 | WriteLv3),
+#endif
+    };
+    initializeProperties(sizeof(properties), properties);
+}
+
+uint8_t* DeviceObject::save(uint8_t* buffer)
+{
+    buffer = pushWord(_ownAddress, buffer);
+    return InterfaceObject::save(buffer);
+}
+
+const uint8_t* DeviceObject::restore(const uint8_t* buffer)
+{
+    buffer = popWord(_ownAddress, buffer);
+    return InterfaceObject::restore(buffer);
+}
+
+uint16_t DeviceObject::saveSize()
+{
+    return 2 + InterfaceObject::saveSize();
+}
+
+uint16_t DeviceObject::individualAddress()
+{
+    return _ownAddress;
+}
+
+void DeviceObject::individualAddress(uint16_t value)
+{
+    _ownAddress = value;
+}
+
+#define USER_STOPPED  0x1
+#define OWN_ADDR_DUPL 0x2
+#define VERIFY_MODE   0x4
+#define SAFE_STATE    0x8
+
+
+void DeviceObject::individualAddressDuplication(bool value)
+{
+    Property* prop = property(PID_DEVICE_CONTROL);
+    uint8_t data;
+    prop->read(data);
+
+    if (value)
+        data |= OWN_ADDR_DUPL;
+    else
+        data &= ~OWN_ADDR_DUPL;
+
+    prop->write(data);
+}
+
+bool DeviceObject::verifyMode()
+{
+    Property* prop = property(PID_DEVICE_CONTROL);
+    uint8_t data;
+    prop->read(data);
+    return (data & VERIFY_MODE) > 0;
+}
+
+void DeviceObject::verifyMode(bool value)
+{
+    Property* prop = property(PID_DEVICE_CONTROL);
+    uint8_t data;
+    prop->read(data);
+
+    if (value)
+        data |= VERIFY_MODE;
+    else
+        data &= ~VERIFY_MODE;
+
+    prop->write(data);
+}
+
+bool DeviceObject::progMode()
+{
+    return _prgMode == 1;
+}
+
+void DeviceObject::progMode(bool value)
+{
+    if (value)
+        _prgMode = 1;
+    else
+        _prgMode = 0;
+}
+
+uint16_t DeviceObject::manufacturerId()
+{
+    uint16_t manufacturerId;
+    popWord(manufacturerId, propertyData(PID_SERIAL_NUMBER));
+    return manufacturerId;
+}
+
+void DeviceObject::manufacturerId(uint16_t value)
+{
+    uint8_t data[LEN_KNX_SERIAL];
+    memcpy(data, propertyData(PID_SERIAL_NUMBER), LEN_KNX_SERIAL);
+    pushWord(value, data);
+    propertyValue(PID_SERIAL_NUMBER, data);
+}
+
+uint32_t DeviceObject::bauNumber()
+{
+    uint32_t bauNumber;
+    popInt(bauNumber, propertyData(PID_SERIAL_NUMBER) + 2);
+    return bauNumber;
+}
+
+void DeviceObject::bauNumber(uint32_t value)
+{
+    uint8_t data[LEN_KNX_SERIAL];
+    memcpy(data, propertyData(PID_SERIAL_NUMBER), LEN_KNX_SERIAL);
+    pushInt(value, data + 2);
+    propertyValue(PID_SERIAL_NUMBER, data);
+}
+
+const uint8_t* DeviceObject::orderNumber()
+{
+    DataProperty* prop = (DataProperty*)property(PID_ORDER_INFO);
+    return prop->data();
+}
+
+void DeviceObject::orderNumber(const uint8_t* value)
+{
+    Property* prop = property(PID_ORDER_INFO);
+    prop->write(value);
+}
+
+const uint8_t* DeviceObject::hardwareType()
+{
+    DataProperty* prop = (DataProperty*)property(PID_HARDWARE_TYPE);
+    return prop->data();
+}
+
+void DeviceObject::hardwareType(const uint8_t* value)
+{
+    Property* prop = property(PID_HARDWARE_TYPE);
+    prop->write(value);
+}
+
+uint16_t DeviceObject::version()
+{
+    Property* prop = property(PID_VERSION);
+    uint16_t value;
+    prop->read(value);
+    return value;
+}
+
+void DeviceObject::version(uint16_t value)
+{
+    Property* prop = property(PID_VERSION);
+    prop->write(value);
+}
+
+uint16_t DeviceObject::maskVersion()
+{
+    Property* prop = property(PID_DEVICE_DESCRIPTOR);
+    uint16_t value;
+    prop->read(value);
+    return value;
+}
+
+void DeviceObject::maskVersion(uint16_t value)
+{
+    Property* prop = property(PID_DEVICE_DESCRIPTOR);
+    prop->write(value);
+}
+
+uint16_t DeviceObject::maxApduLength()
+{
+    Property* prop = property(PID_MAX_APDU_LENGTH);
+    uint16_t value;
+    prop->read(value);
+    return value;
+}
+
+void DeviceObject::maxApduLength(uint16_t value)
+{
+    Property* prop = property(PID_MAX_APDU_LENGTH);
+    prop->write(value);
+}
+
+const uint8_t* DeviceObject::rfDomainAddress()
+{
+    DataProperty* prop = (DataProperty*)property(PID_RF_DOMAIN_ADDRESS_CEMI_SERVER);
+    return prop->data();
+}
+
+void DeviceObject::rfDomainAddress(uint8_t* value)
+{
+    Property* prop = property(PID_RF_DOMAIN_ADDRESS_CEMI_SERVER);
+    prop->write(value);
+}
+
+uint8_t DeviceObject::defaultHopCount()
+{
+    Property* prop = property(PID_ROUTING_COUNT);
+    uint8_t value;
+    prop->read(value);
+    return (value >> 4) & 0x07;
+}

components/knx/src/knx/device_object.h

@@ -0,0 +1,51 @@
+#pragma once
+
+#include "interface_object.h"
+
+#define LEN_HARDWARE_TYPE 6
+
+class DeviceObject: public InterfaceObject
+{
+public:
+    // increase this version anytime DeviceObject-API changes 
+    // the following value represents the serialized representation of DeviceObject.
+    const uint16_t apiVersion = 1;
+    
+    DeviceObject();
+    uint8_t* save(uint8_t* buffer) override;
+    const uint8_t* restore(const uint8_t* buffer) override;
+    uint16_t saveSize() override;
+
+        uint16_t individualAddress();
+        void individualAddress(uint16_t value);
+
+        void individualAddressDuplication(bool value);
+        bool verifyMode();
+        void verifyMode(bool value);
+        bool progMode();
+        void progMode(bool value);
+        uint16_t manufacturerId();
+        void manufacturerId(uint16_t value);
+        uint32_t bauNumber();
+        void bauNumber(uint32_t value);
+        const uint8_t* orderNumber();
+        void orderNumber(const uint8_t* value);
+        const uint8_t* hardwareType();
+        void hardwareType(const uint8_t* value);
+        uint16_t version();
+        void version(uint16_t value);
+        uint16_t maskVersion();
+        void maskVersion(uint16_t value);
+        uint16_t maxApduLength();
+        void maxApduLength(uint16_t value);
+        const uint8_t* rfDomainAddress();
+        void rfDomainAddress(uint8_t* value);
+        uint8_t defaultHopCount();
+    private:
+        uint8_t _prgMode = 0;
+#if MASK_VERSION == 0x091A || MASK_VERSION == 0x2920
+        uint16_t _ownAddress = 0xFF00; // 15.15.0; couplers have 15.15.0 as default PA
+#else
+        uint16_t _ownAddress = 0xFFFF; // 15.15.255;
+#endif
+};

components/knx/src/knx/dpt.cpp

@@ -0,0 +1,23 @@
+#include "dpt.h"
+
+#include "bits.h"
+
+Dpt::Dpt()
+{}
+
+Dpt::Dpt(short mainGroup, short subGroup, short index /* = 0 */)
+    : mainGroup(mainGroup), subGroup(subGroup), index(index)
+{
+    if (subGroup == 0 && (mainGroup < 14 || mainGroup > 16))
+        println("WARNING: You used an invalid Dpt *.0");
+}
+
+bool Dpt::operator==(const Dpt& other) const
+{
+    return other.mainGroup == mainGroup && other.subGroup == subGroup && other.index == index;
+}
+
+bool Dpt::operator!=(const Dpt& other) const
+{
+    return !(other == *this);
+}

components/knx/src/knx/dpt.h

@@ -0,0 +1,373 @@
+#pragma once
+
+#define DPT_Switch Dpt(1, 1)
+#define DPT_Bool Dpt(1, 2)
+#define DPT_Enable Dpt(1, 3)
+#define DPT_Ramp Dpt(1, 4)
+#define DPT_Alarm Dpt(1, 5)
+#define DPT_BinaryValue Dpt(1, 6)
+#define DPT_Step Dpt(1, 7)
+#define DPT_UpDown Dpt(1, 8)
+#define DPT_OpenClose Dpt(1, 9)
+#define DPT_Start Dpt(1, 10)
+#define DPT_State Dpt(1, 11)
+#define DPT_Invert Dpt(1, 12)
+#define DPT_DimSendStyle Dpt(1, 13)
+#define DPT_InputSource Dpt(1, 14)
+#define DPT_Reset Dpt(1, 15)
+#define DPT_Ack Dpt(1, 16)
+#define DPT_Trigger Dpt(1, 17)
+#define DPT_Occupancy Dpt(1, 18)
+#define DPT_Window_Door Dpt(1, 19)
+#define DPT_LogicalFunction Dpt(1, 21)
+#define DPT_Scene_AB Dpt(1, 22)
+#define DPT_ShutterBlinds_Mode Dpt(1, 23)
+#define DPT_Heat_Cool Dpt(1, 100)
+#define DPT_Switch_Control Dpt(2, 1)
+#define DPT_Bool_Control Dpt(2, 2)
+#define DPT_Enable_Control Dpt(2, 3)
+#define DPT_Ramp_Control Dpt(2, 4)
+#define DPT_Alarm_Control Dpt(2, 5)
+#define DPT_BinaryValue_Control Dpt(2, 6)
+#define DPT_Step_Control Dpt(2, 7)
+#define DPT_Direction1_Control Dpt(2, 8)
+#define DPT_Direction2_Control Dpt(2, 9)
+#define DPT_Start_Control Dpt(2, 10)
+#define DPT_State_Control Dpt(2, 11)
+#define DPT_Invert_Control Dpt(2, 12)
+#define DPT_Control_Dimming Dpt(3, 7)
+#define DPT_Control_Blinds Dpt(3, 8)
+#define DPT_Char_ASCII Dpt(4, 1)
+#define DPT_Char_8859_1 Dpt(4, 2)
+#define DPT_Scaling Dpt(5, 1)
+#define DPT_Angle Dpt(5, 3)
+#define DPT_Percent_U8 Dpt(5, 4)
+#define DPT_DecimalFactor Dpt(5, 5)
+#define DPT_Tariff Dpt(5, 6)
+#define DPT_Value_1_Ucount Dpt(5, 10)
+#define DPT_Percent_V8 Dpt(6, 1)
+#define DPT_Value_1_Count Dpt(6, 10)
+#define DPT_Status_Mode3 Dpt(6, 20)
+#define DPT_Value_2_Ucount Dpt(7, 1)
+#define DPT_TimePeriodMsec Dpt(7, 2)
+#define DPT_TimePeriod10MSec Dpt(7, 3)
+#define DPT_TimePeriod100MSec Dpt(7, 4)
+#define DPT_TimePeriodSec Dpt(7, 5)
+#define DPT_TimePeriodMin Dpt(7, 6)
+#define DPT_TimePeriodHrs Dpt(7, 7)
+#define DPT_PropDataType Dpt(7, 10)
+#define DPT_Length_mm Dpt(7, 11)
+#define DPT_UElCurrentmA Dpt(7, 12)
+#define DPT_Brightness Dpt(7, 13)
+#define DPT_Value_2_Count Dpt(8, 1)
+#define DPT_DeltaTimeMsec Dpt(8, 2)
+#define DPT_DeltaTime10MSec Dpt(8, 3)
+#define DPT_DeltaTime100MSec Dpt(8, 4)
+#define DPT_DeltaTimeSec Dpt(8, 5)
+#define DPT_DeltaTimeMin Dpt(8, 6)
+#define DPT_DeltaTimeHrs Dpt(8, 7)
+#define DPT_Percent_V16 Dpt(8, 10)
+#define DPT_Rotation_Angle Dpt(8, 11)
+#define DPT_Value_Temp Dpt(9, 1)
+#define DPT_Value_Tempd Dpt(9, 2)
+#define DPT_Value_Tempa Dpt(9, 3)
+#define DPT_Value_Lux Dpt(9, 4)
+#define DPT_Value_Wsp Dpt(9, 5)
+#define DPT_Value_Pres Dpt(9, 6)
+#define DPT_Value_Humidity Dpt(9, 7)
+#define DPT_Value_AirQuality Dpt(9, 8)
+#define DPT_Value_Time1 Dpt(9, 10)
+#define DPT_Value_Time2 Dpt(9, 11)
+#define DPT_Value_Volt Dpt(9, 20)
+#define DPT_Value_Curr Dpt(9, 21)
+#define DPT_PowerDensity Dpt(9, 22)
+#define DPT_KelvinPerPercent Dpt(9, 23)
+#define DPT_Power Dpt(9, 24)
+#define DPT_Value_Volume_Flow Dpt(9, 25)
+#define DPT_Rain_Amount Dpt(9, 26)
+#define DPT_Value_Temp_F Dpt(9, 27)
+#define DPT_Value_Wsp_kmh Dpt(9, 28)
+#define DPT_TimeOfDay Dpt(10, 1, 1)
+#define DPT_Date Dpt(11, 1)
+#define DPT_Value_4_Ucount Dpt(12, 1)
+#define DPT_Value_4_Count Dpt(13, 1)
+#define DPT_FlowRate_m3_per_h Dpt(13, 2)
+#define DPT_ActiveEnergy Dpt(13, 10)
+#define DPT_ApparantEnergy Dpt(13, 11)
+#define DPT_ReactiveEnergy Dpt(13, 12)
+#define DPT_ActiveEnergy_kWh Dpt(13, 13)
+#define DPT_ApparantEnergy_kVAh Dpt(13, 14)
+#define DPT_ReactiveEnergy_kVARh Dpt(13, 15)
+#define DPT_LongDeltaTimeSec Dpt(13, 100)
+#define DPT_Value_Acceleration Dpt(14, 0)
+#define DPT_Value_Acceleration_Angular Dpt(14, 1)
+#define DPT_Value_Activation_Energy Dpt(14, 2)
+#define DPT_Value_Activity Dpt(14, 3)
+#define DPT_Value_Mol Dpt(14, 4)
+#define DPT_Value_Amplitude Dpt(14, 5)
+#define DPT_Value_AngleRad Dpt(14, 6)
+#define DPT_Value_AngleDeg Dpt(14, 7)
+#define DPT_Value_Angular_Momentum Dpt(14, 8)
+#define DPT_Value_Angular_Velocity Dpt(14, 9)
+#define DPT_Value_Area Dpt(14, 10)
+#define DPT_Value_Capacitance Dpt(14, 11)
+#define DPT_Value_Charge_DensitySurface Dpt(14, 12)
+#define DPT_Value_Charge_DensityVolume Dpt(14, 13)
+#define DPT_Value_Compressibility Dpt(14, 14)
+#define DPT_Value_Conductance Dpt(14, 15)
+#define DPT_Value_Electrical_Conductivity Dpt(14, 16)
+#define DPT_Value_Density Dpt(14, 17)
+#define DPT_Value_Electric_Charge Dpt(14, 18)
+#define DPT_Value_Electric_Current Dpt(14, 19)
+#define DPT_Value_Electric_CurrentDensity Dpt(14, 20)
+#define DPT_Value_Electric_DipoleMoment Dpt(14, 21)
+#define DPT_Value_Electric_Displacement Dpt(14, 22)
+#define DPT_Value_Electric_FieldStrength Dpt(14, 23)
+#define DPT_Value_Electric_Flux Dpt(14, 24)
+#define DPT_Value_Electric_FluxDensity Dpt(14, 25)
+#define DPT_Value_Electric_Polarization Dpt(14, 26)
+#define DPT_Value_Electric_Potential Dpt(14, 27)
+#define DPT_Value_Electric_PotentialDifference Dpt(14, 28)
+#define DPT_Value_ElectromagneticMoment Dpt(14, 29)
+#define DPT_Value_Electromotive_Force Dpt(14, 30)
+#define DPT_Value_Energy Dpt(14, 31)
+#define DPT_Value_Force Dpt(14, 32)
+#define DPT_Value_Frequency Dpt(14, 33)
+#define DPT_Value_Angular_Frequency Dpt(14, 34)
+#define DPT_Value_Heat_Capacity Dpt(14, 35)
+#define DPT_Value_Heat_FlowRate Dpt(14, 36)
+#define DPT_Value_Heat_Quantity Dpt(14, 37)
+#define DPT_Value_Impedance Dpt(14, 38)
+#define DPT_Value_Length Dpt(14, 39)
+#define DPT_Value_Light_Quantity Dpt(14, 40)
+#define DPT_Value_Luminance Dpt(14, 41)
+#define DPT_Value_Luminous_Flux Dpt(14, 42)
+#define DPT_Value_Luminous_Intensity Dpt(14, 43)
+#define DPT_Value_Magnetic_FieldStrength Dpt(14, 44)
+#define DPT_Value_Magnetic_Flux Dpt(14, 45)
+#define DPT_Value_Magnetic_FluxDensity Dpt(14, 46)
+#define DPT_Value_Magnetic_Moment Dpt(14, 47)
+#define DPT_Value_Magnetic_Polarization Dpt(14, 48)
+#define DPT_Value_Magnetization Dpt(14, 49)
+#define DPT_Value_MagnetomotiveForce Dpt(14, 50)
+#define DPT_Value_Mass Dpt(14, 51)
+#define DPT_Value_MassFlux Dpt(14, 52)
+#define DPT_Value_Momentum Dpt(14, 53)
+#define DPT_Value_Phase_AngleRad Dpt(14, 54)
+#define DPT_Value_Phase_AngleDeg Dpt(14, 55)
+#define DPT_Value_Power Dpt(14, 56)
+#define DPT_Value_Power_Factor Dpt(14, 57)
+#define DPT_Value_Pressure Dpt(14, 58)
+#define DPT_Value_Reactance Dpt(14, 59)
+#define DPT_Value_Resistance Dpt(14, 60)
+#define DPT_Value_Resistivity Dpt(14, 61)
+#define DPT_Value_SelfInductance Dpt(14, 62)
+#define DPT_Value_SolidAngle Dpt(14, 63)
+#define DPT_Value_Sound_Intensity Dpt(14, 64)
+#define DPT_Value_Speed Dpt(14, 65)
+#define DPT_Value_Stress Dpt(14, 66)
+#define DPT_Value_Surface_Tension Dpt(14, 67)
+#define DPT_Value_Common_Temperature Dpt(14, 68)
+#define DPT_Value_Absolute_Temperature Dpt(14, 69)
+#define DPT_Value_TemperatureDifference Dpt(14, 70)
+#define DPT_Value_Thermal_Capacity Dpt(14, 71)
+#define DPT_Value_Thermal_Conductivity Dpt(14, 72)
+#define DPT_Value_ThermoelectricPower Dpt(14, 73)
+#define DPT_Value_Time Dpt(14, 74)
+#define DPT_Value_Torque Dpt(14, 75)
+#define DPT_Value_Volume Dpt(14, 76)
+#define DPT_Value_Volume_Flux Dpt(14, 77)
+#define DPT_Value_Weight Dpt(14, 78)
+#define DPT_Value_Work Dpt(14, 79)
+#define DPT_Value_ApparentPower Dpt(14, 80)
+#define DPT_Access_Data Dpt(15, 0)
+#define DPT_String_ASCII Dpt(16, 0)
+#define DPT_String_8859_1 Dpt(16, 1)
+#define DPT_SceneNumber Dpt(17, 1)
+#define DPT_SceneControl Dpt(18, 1)
+#define DPT_DateTime Dpt(19, 1)
+#define DPT_SCLOMode Dpt(20, 1)
+#define DPT_BuildingMode Dpt(20, 2)
+#define DPT_OccMode Dpt(20, 3)
+#define DPT_Priority Dpt(20, 4)
+#define DPT_LightApplicationMode Dpt(20, 5)
+#define DPT_ApplicationArea Dpt(20, 6)
+#define DPT_AlarmClassType Dpt(20, 7)
+#define DPT_PSUMode Dpt(20, 8)
+#define DPT_ErrorClass_System Dpt(20, 11)
+#define DPT_ErrorClass_HVAC Dpt(20, 12)
+#define DPT_Time_Delay Dpt(20, 13)
+#define DPT_Beaufort_Wind_Force_Scale Dpt(20, 14)
+#define DPT_SensorSelect Dpt(20, 17)
+#define DPT_ActuatorConnectType Dpt(20, 20)
+#define DPT_FuelType Dpt(20, 100)
+#define DPT_BurnerType Dpt(20, 101)
+#define DPT_HVACMode Dpt(20, 102)
+#define DPT_DHWMode Dpt(20, 103)
+#define DPT_LoadPriority Dpt(20, 104)
+#define DPT_HVACContrMode Dpt(20, 105)
+#define DPT_HVACEmergMode Dpt(20, 106)
+#define DPT_ChangeoverMode Dpt(20, 107)
+#define DPT_ValveMode Dpt(20, 108)
+#define DPT_DamperMode Dpt(20, 109)
+#define DPT_HeaterMode Dpt(20, 110)
+#define DPT_FanMode Dpt(20, 111)
+#define DPT_MasterSlaveMode Dpt(20, 112)
+#define DPT_StatusRoomSetp Dpt(20, 113)
+#define DPT_ADAType Dpt(20, 120)
+#define DPT_BackupMode Dpt(20, 121)
+#define DPT_StartSynchronization Dpt(20, 122)
+#define DPT_Behaviour_Lock_Unlock Dpt(20, 600)
+#define DPT_Behaviour_Bus_Power_Up_Down Dpt(20, 601)
+#define DPT_DALI_Fade_Time Dpt(20, 602)
+#define DPT_BlinkingMode Dpt(20, 603)
+#define DPT_LightControlMode Dpt(20, 604)
+#define DPT_SwitchPBModel Dpt(20, 605)
+#define DPT_PBAction Dpt(20, 606)
+#define DPT_DimmPBModel Dpt(20, 607)
+#define DPT_SwitchOnMode Dpt(20, 608)
+#define DPT_LoadTypeSet Dpt(20, 609)
+#define DPT_LoadTypeDetected Dpt(20, 610)
+#define DPT_SABExceptBehaviour Dpt(20, 801)
+#define DPT_SABBehaviour_Lock_Unlock Dpt(20, 802)
+#define DPT_SSSBMode Dpt(20, 803)
+#define DPT_BlindsControlMode Dpt(20, 804)
+#define DPT_CommMode Dpt(20, 1000)
+#define DPT_AddInfoTypes Dpt(20, 1001)
+#define DPT_RF_ModeSelect Dpt(20, 1002)
+#define DPT_RF_FilterSelect Dpt(20, 1003)
+#define DPT_StatusGen Dpt(21, 1)
+#define DPT_Device_Control Dpt(21, 2)
+#define DPT_ForceSign Dpt(21, 100)
+#define DPT_ForceSignCool Dpt(21, 101)
+#define DPT_StatusRHC Dpt(21, 102)
+#define DPT_StatusSDHWC Dpt(21, 103)
+#define DPT_FuelTypeSet Dpt(21, 104)
+#define DPT_StatusRCC Dpt(21, 105)
+#define DPT_StatusAHU Dpt(21, 106)
+#define DPT_LightActuatorErrorInfo Dpt(21, 601)
+#define DPT_RF_ModeInfo Dpt(21, 1000)
+#define DPT_RF_FilterInfo Dpt(21, 1001)
+#define DPT_Channel_Activation_8 Dpt(21, 1010)
+#define DPT_StatusDHWC Dpt(22, 100)
+#define DPT_StatusRHCC Dpt(22, 101)
+#define DPT_Media Dpt(22, 1000)
+#define DPT_Channel_Activation_16 Dpt(22, 1010)
+#define DPT_OnOff_Action Dpt(23, 1)
+#define DPT_Alarm_Reaction Dpt(23, 2)
+#define DPT_UpDown_Action Dpt(23, 3)
+#define DPT_HVAC_PB_Action Dpt(23, 102)
+#define DPT_VarString_8859_1 Dpt(24, 1)
+#define DPT_DoubleNibble Dpt(25, 1000)
+#define DPT_SceneInfo Dpt(26, 1)
+#define DPT_CombinedInfoOnOff Dpt(27, 1)
+#define DPT_UTF_8 Dpt(28, 1)
+#define DPT_ActiveEnergy_V64 Dpt(29, 10)
+#define DPT_ApparantEnergy_V64 Dpt(29, 11)
+#define DPT_ReactiveEnergy_V64 Dpt(29, 12)
+#define DPT_Channel_Activation_24 Dpt(30, 1010)
+#define DPT_PB_Action_HVAC_Extended Dpt(31, 101)
+#define DPT_Heat_Cool_Z Dpt(200, 100)
+#define DPT_BinaryValue_Z Dpt(200, 101)
+#define DPT_HVACMode_Z Dpt(201, 100)
+#define DPT_DHWMode_Z Dpt(201, 102)
+#define DPT_HVACContrMode_Z Dpt(201, 104)
+#define DPT_EnablH_Cstage_Z Dpt(201, 105)
+#define DPT_BuildingMode_Z Dpt(201, 107)
+#define DPT_OccMode_Z Dpt(201, 108)
+#define DPT_HVACEmergMode_Z Dpt(201, 109)
+#define DPT_RelValue_Z Dpt(202, 1)
+#define DPT_UCountValue8_Z Dpt(202, 2)
+#define DPT_TimePeriodMsec_Z Dpt(203, 2)
+#define DPT_TimePeriod10Msec_Z Dpt(203, 3)
+#define DPT_TimePeriod100Msec_Z Dpt(203, 4)
+#define DPT_TimePeriodSec_Z Dpt(203, 5)
+#define DPT_TimePeriodMin_Z Dpt(203, 6)
+#define DPT_TimePeriodHrs_Z Dpt(203, 7)
+#define DPT_UFlowRateLiter_per_h_Z Dpt(203, 11)
+#define DPT_UCountValue16_Z Dpt(203, 12)
+#define DPT_UElCurrent_Z Dpt(203, 13)
+#define DPT_PowerKW_Z Dpt(203, 14)
+#define DPT_AtmPressureAbs_Z Dpt(203, 15)
+#define DPT_PercentU16_Z Dpt(203, 17)
+#define DPT_HVACAirQual_Z Dpt(203, 100)
+#define DPT_WindSpeed_Z Dpt(203, 101)
+#define DPT_SunIntensity_Z Dpt(203, 102)
+#define DPT_HVACAirFlowAbs_Z Dpt(203, 104)
+#define DPT_RelSignedValue_Z Dpt(204, 1)
+#define DPT_DeltaTimeMsec_Z Dpt(205, 2)
+#define DPT_DeltaTime10Msec_Z Dpt(205, 3)
+#define DPT_DeltaTime100Msec_Z Dpt(205, 4)
+#define DPT_DeltaTimeSec_Z Dpt(205, 5)
+#define DPT_DeltaTimeMin_Z Dpt(205, 6)
+#define DPT_DeltaTimeHrs_Z Dpt(205, 7)
+#define DPT_Percent_V16_Z Dpt(205, 17)
+#define DPT_TempHVACAbs_Z Dpt(205, 100)
+#define DPT_TempHVACRel_Z Dpt(205, 101)
+#define DPT_HVACAirFlowRel_Z Dpt(205, 102)
+#define DPT_HVACModeNext Dpt(206, 100)
+#define DPT_DHWModeNext Dpt(206, 102)
+#define DPT_OccModeNext Dpt(206, 104)
+#define DPT_BuildingModeNext Dpt(206, 105)
+#define DPT_StatusBUC Dpt(207, 100)
+#define DPT_LockSign Dpt(207, 101)
+#define DPT_ValueDemBOC Dpt(207, 102)
+#define DPT_ActPosDemAbs Dpt(207, 104)
+#define DPT_StatusAct Dpt(207, 105)
+#define DPT_StatusLightingActuator Dpt(207, 600)
+#define DPT_StatusHPM Dpt(209, 100)
+#define DPT_TempRoomDemAbs Dpt(209, 101)
+#define DPT_StatusCPM Dpt(209, 102)
+#define DPT_StatusWTC Dpt(209, 103)
+#define DPT_TempFlowWaterDemAbs Dpt(210, 100)
+#define DPT_EnergyDemWater Dpt(211, 100)
+#define DPT_TempRoomSetpSetShift_3 Dpt(212, 100)
+#define DPT_TempRoomSetpSet_3 Dpt(212, 101)
+#define DPT_TempRoomSetpSet_4 Dpt(213, 100)
+#define DPT_TempDHWSetpSet_4 Dpt(213, 101)
+#define DPT_TempRoomSetpSetShift_4 Dpt(213, 102)
+#define DPT_PowerFlowWaterDemHPM Dpt(214, 100)
+#define DPT_PowerFlowWaterDemCPM Dpt(214, 101)
+#define DPT_StatusBOC Dpt(215, 100)
+#define DPT_StatusCC Dpt(215, 101)
+#define DPT_SpecHeatProd Dpt(216, 100)
+#define DPT_Version Dpt(217, 1)
+#define DPT_VolumeLiter_Z Dpt(218, 1)
+#define DPT_FlowRate_m3_per_h_Z Dpt(218, 2)
+#define DPT_AlarmInfo Dpt(219, 1)
+#define DPT_TempHVACAbsNext Dpt(220, 100)
+#define DPT_SerNum Dpt(221, 1)
+#define DPT_TempRoomSetpSetF16_3 Dpt(222, 100)
+#define DPT_TempRoomSetpSetShiftF16_3 Dpt(222, 101)
+#define DPT_EnergyDemAir Dpt(223, 100)
+#define DPT_TempSupplyAirSetpSet Dpt(224, 100)
+#define DPT_ScalingSpeed Dpt(225, 1)
+#define DPT_Scaling_Step_Time Dpt(225, 2)
+#define DPT_TariffNext Dpt(225, 3)
+#define DPT_MeteringValue Dpt(229, 1)
+#define DPT_MBus_Address Dpt(230, 1000)
+#define DPT_Locale_ASCII Dpt(231, 1)
+#define DPT_Colour_RGB Dpt(232, 600)
+#define DPT_LanguageCodeAlpha2_ASCII Dpt(234, 1)
+#define DPT_RegionCodeAlpha2_ASCII Dpt(234, 2)
+#define DPT_Tariff_ActiveEnergy Dpt(235, 1)
+#define DPT_Prioritised_Mode_Control Dpt(236, 1)
+#define DPT_DALI_Control_Gear_Diagnostic Dpt(237, 600)
+#define DPT_SceneConfig Dpt(238, 1)
+#define DPT_DALI_Diagnostics Dpt(238, 600)
+#define DPT_FlaggedScaling Dpt(239, 1)
+#define DPT_CombinedPosition Dpt(240, 800)
+#define DPT_StatusSAB Dpt(241, 800)
+#define DPT_Colour_RGBW Dpt(251, 600)
+
+class Dpt
+{
+    public:
+        Dpt();
+        Dpt(short mainGroup, short subGroup, short index = 0);
+        unsigned short mainGroup;
+        unsigned short subGroup;
+        unsigned short index;
+        bool operator==(const Dpt& other) const;
+        bool operator!=(const Dpt& other) const;
+};

components/knx/src/knx/dptconvert.h

@@ -0,0 +1,149 @@
+/*
+    KNX client library - internals
+    Copyright (C) 2005-2011 Martin Koegler <mkoegler@auto.tuwien.ac.at>
+    Copyright (C) 2014 Patrik Pfaffenbauer <patrik.pfaffenbauer@p3.co.at>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    In addition to the permissions in the GNU General Public License,
+    you may link the compiled version of this file into combinations
+    with other programs, and distribute those combinations without any
+    restriction coming from the use of this file. (The General Public
+    License restrictions do apply in other respects; for example, they
+    cover modification of the file, and distribution when not linked into
+    a combine executable.)
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#pragma once
+
+#include <cstdint>
+
+#include "dpt.h"
+#include "knx_value.h"
+
+/**
+ * Converts the KNX Payload given by the specific DPT and puts the value in the KNXValue struc
+ */
+bool KNX_Decode_Value(uint8_t* payload, size_t payload_length, const Dpt& datatype, KNXValue& value);
+
+/**
+ * Converts the KNXValue struct to the KNX Payload as the specific DPT
+ */
+bool KNX_Encode_Value(const KNXValue& value, uint8_t* payload, size_t payload_length, const Dpt& datatype);
+
+//KNX to internal
+bool busValueToBinary(const uint8_t* payload, size_t payload_length, const Dpt& datatype, KNXValue& value);
+bool busValueToBinaryControl(const uint8_t* payload, size_t payload_length, const Dpt& datatype, KNXValue& value);
+bool busValueToStepControl(const uint8_t* payload, size_t payload_length, const Dpt& datatype, KNXValue& value);
+bool busValueToCharacter(const uint8_t* payload, size_t payload_length, const Dpt& datatype, KNXValue& value);
+bool busValueToUnsigned8(const uint8_t* payload, size_t payload_length, const Dpt& datatype, KNXValue& value);
+bool busValueToSigned8(const uint8_t* payload, size_t payload_length, const Dpt& datatype, KNXValue& value);
+bool busValueToStatusAndMode(const uint8_t* payload, size_t payload_length, const Dpt& datatype, KNXValue& value);
+bool busValueToUnsigned16(const uint8_t* payload, size_t payload_length, const Dpt& datatype, KNXValue& value);
+bool busValueToTimePeriod(const uint8_t* payload, size_t payload_length, const Dpt& datatype, KNXValue& value);
+bool busValueToSigned16(const uint8_t* payload, size_t payload_length, const Dpt& datatype, KNXValue& value);
+bool busValueToTimeDelta(const uint8_t* payload, size_t payload_length, const Dpt& datatype, KNXValue& value);
+bool busValueToFloat16(const uint8_t* payload, size_t payload_length, const Dpt& datatype, KNXValue& value);
+bool busValueToTime(const uint8_t* payload, size_t payload_length, const Dpt& datatype, KNXValue& value);
+bool busValueToDate(const uint8_t* payload, size_t payload_length, const Dpt& datatype, KNXValue& value);
+bool busValueToUnsigned32(const uint8_t* payload, size_t payload_length, const Dpt& datatype, KNXValue& value);
+bool busValueToSigned32(const uint8_t* payload, size_t payload_length, const Dpt& datatype, KNXValue& value);
+bool busValueToLongTimePeriod(const uint8_t* payload, size_t payload_length, const Dpt& datatype, KNXValue& value);
+bool busValueToFloat32(const uint8_t* payload, size_t payload_length, const Dpt& datatype, KNXValue& value);
+bool busValueToAccess(const uint8_t* payload, size_t payload_length, const Dpt& datatype, KNXValue& value);
+bool busValueToString(const uint8_t* payload, size_t payload_length, const Dpt& datatype, KNXValue& value);
+bool busValueToScene(const uint8_t* payload, size_t payload_length, const Dpt& datatype, KNXValue& value);
+bool busValueToSceneControl(const uint8_t* payload, size_t payload_length, const Dpt& datatype, KNXValue& value);
+bool busValueToSceneInfo(const uint8_t* payload, size_t payload_length, const Dpt& datatype, KNXValue& value);
+bool busValueToSceneConfig(const uint8_t* payload, size_t payload_length, const Dpt& datatype, KNXValue& value);
+bool busValueToDateTime(const uint8_t* payload, size_t payload_length, const Dpt& datatype, KNXValue& value);
+bool busValueToUnicode(const uint8_t* payload, size_t payload_length, const Dpt& datatype, KNXValue& value);
+bool busValueToSigned64(const uint8_t* payload, size_t payload_length, const Dpt& datatype, KNXValue& value);
+bool busValueToAlarmInfo(const uint8_t* payload, size_t payload_length, const Dpt& datatype, KNXValue& value);
+bool busValueToSerialNumber(const uint8_t* payload, size_t payload_length, const Dpt& datatype, KNXValue& value);
+bool busValueToVersion(const uint8_t* payload, size_t payload_length, const Dpt& datatype, KNXValue& value);
+bool busValueToScaling(const uint8_t* payload, size_t payload_length, const Dpt& datatype, KNXValue& value);
+bool busValueToTariff(const uint8_t* payload, size_t payload_length, const Dpt& datatype, KNXValue& value);
+bool busValueToLocale(const uint8_t* payload, size_t payload_length, const Dpt& datatype, KNXValue& value);
+bool busValueToRGB(const uint8_t* payload, size_t payload_length, const Dpt& datatype, KNXValue& value);
+bool busValueToRGBW(const uint8_t* payload, size_t payload_length, const Dpt& datatype, KNXValue& value);
+bool busValueToFlaggedScaling(const uint8_t* payload, size_t payload_length, const Dpt& datatype, KNXValue& value);
+bool busValueToActiveEnergy(const uint8_t* payload, size_t payload_length, const Dpt& datatype, KNXValue& value);
+
+//Internal to KNX
+bool valueToBusValueBinary(const KNXValue& value, uint8_t* payload, size_t payload_length, const Dpt& datatype);
+bool valueToBusValueBinaryControl(const KNXValue& value, uint8_t* payload, size_t payload_length, const Dpt& datatype);
+bool valueToBusValueStepControl(const KNXValue& value, uint8_t* payload, size_t payload_length, const Dpt& datatype);
+bool valueToBusValueCharacter(const KNXValue& value, uint8_t* payload, size_t payload_length, const Dpt& datatype);
+bool valueToBusValueUnsigned8(const KNXValue& value, uint8_t* payload, size_t payload_length, const Dpt& datatype);
+bool valueToBusValueSigned8(const KNXValue& value, uint8_t* payload, size_t payload_length, const Dpt& datatype);
+bool valueToBusValueStatusAndMode(const KNXValue& value, uint8_t* payload, size_t payload_length, const Dpt& datatype);
+bool valueToBusValueUnsigned16(const KNXValue& value, uint8_t* payload, size_t payload_length, const Dpt& datatype);
+bool valueToBusValueTimePeriod(const KNXValue& value, uint8_t* payload, size_t payload_length, const Dpt& datatype);
+bool valueToBusValueSigned16(const KNXValue& value, uint8_t* payload, size_t payload_length, const Dpt& datatype);
+bool valueToBusValueTimeDelta(const KNXValue& value, uint8_t* payload, size_t payload_length, const Dpt& datatype);
+bool valueToBusValueFloat16(const KNXValue& value, uint8_t* payload, size_t payload_length, const Dpt& datatype);
+bool valueToBusValueTime(const KNXValue& value, uint8_t* payload, size_t payload_length, const Dpt& datatype);
+bool valueToBusValueDate(const KNXValue& value, uint8_t* payload, size_t payload_length, const Dpt& datatype);
+bool valueToBusValueUnsigned32(const KNXValue& value, uint8_t* payload, size_t payload_length, const Dpt& datatype);
+bool valueToBusValueSigned32(const KNXValue& value, uint8_t* payload, size_t payload_length, const Dpt& datatype);
+bool valueToBusValueLongTimePeriod(const KNXValue& value, uint8_t* payload, size_t payload_length, const Dpt& datatype);
+bool valueToBusValueFloat32(const KNXValue& value, uint8_t* payload, size_t payload_length, const Dpt& datatype);
+bool valueToBusValueAccess(const KNXValue& value, uint8_t* payload, size_t payload_length, const Dpt& datatype);
+bool valueToBusValueString(const KNXValue& value, uint8_t* payload, size_t payload_length, const Dpt& datatype);
+bool valueToBusValueScene(const KNXValue& value, uint8_t* payload, size_t payload_length, const Dpt& datatype);
+bool valueToBusValueSceneControl(const KNXValue& value, uint8_t* payload, size_t payload_length, const Dpt& datatype);
+bool valueToBusValueSceneInfo(const KNXValue& value, uint8_t* payload, size_t payload_length, const Dpt& datatype);
+bool valueToBusValueSceneConfig(const KNXValue& value, uint8_t* payload, size_t payload_length, const Dpt& datatype);
+bool valueToBusValueDateTime(const KNXValue& value, uint8_t* payload, size_t payload_length, const Dpt& datatype);
+bool valueToBusValueUnicode(const KNXValue& value, uint8_t* payload, size_t payload_length, const Dpt& datatype);
+bool valueToBusValueSigned64(const KNXValue& value, uint8_t* payload, size_t payload_length, const Dpt& datatype);
+bool valueToBusValueAlarmInfo(const KNXValue& value, uint8_t* payload, size_t payload_length, const Dpt& datatype);
+bool valueToBusValueSerialNumber(const KNXValue& value, uint8_t* payload, size_t payload_length, const Dpt& datatype);
+bool valueToBusValueVersion(const KNXValue& value, uint8_t* payload, size_t payload_length, const Dpt& datatype);
+bool valueToBusValueScaling(const KNXValue& value, uint8_t* payload, size_t payload_length, const Dpt& datatype);
+bool valueToBusValueTariff(const KNXValue& value, uint8_t* payload, size_t payload_length, const Dpt& datatype);
+bool valueToBusValueLocale(const KNXValue& value, uint8_t* payload, size_t payload_length, const Dpt& datatype);
+bool valueToBusValueRGB(const KNXValue& value, uint8_t* payload, size_t payload_length, const Dpt& datatype);
+bool valueToBusValueRGBW(const KNXValue& value, uint8_t* payload, size_t payload_length, const Dpt& datatype);
+bool valueToBusValueFlaggedScaling(const KNXValue& value, uint8_t* payload, size_t payload_length, const Dpt& datatype);
+bool valueToBusValueActiveEnergy(const KNXValue& value, uint8_t* payload, size_t payload_length, const Dpt& datatype);
+
+//Payload manipulation
+bool bitFromPayload(const uint8_t* payload, int index);
+uint8_t unsigned8FromPayload(const uint8_t* payload, int index);
+int8_t signed8FromPayload(const uint8_t* payload, int index);
+uint16_t unsigned16FromPayload(const uint8_t* payload, int index);
+int16_t signed16FromPayload(const uint8_t* payload, int index);
+uint32_t unsigned32FromPayload(const uint8_t* payload, int index);
+int32_t signed32FromPayload(const uint8_t* payload, int index);
+uint64_t unsigned64FromPayload(const uint8_t* payload, int index);
+double float16FromPayload(const uint8_t* payload, int index);
+float float32FromPayload(const uint8_t* payload, int index);
+double float64FromPayload(const uint8_t* payload, int index);
+int64_t signed64FromPayload(const uint8_t* payload, int index);
+uint8_t bcdFromPayload(const uint8_t* payload, int index);
+
+void bitToPayload(uint8_t* payload, size_t payload_length, int index, bool value);
+void unsigned8ToPayload(uint8_t* payload, size_t payload_length, int index, uint8_t value, uint8_t mask);    //mask 0xFF
+void signed8ToPayload(uint8_t* payload, size_t payload_length, int index, int8_t value, uint8_t mask);       //mask 0xFF
+void unsigned16ToPayload(uint8_t* payload, size_t payload_length, int index, uint16_t value, uint16_t mask); //mask 0xFFFF
+void signed16ToPayload(uint8_t* payload, size_t payload_length, int index, int16_t value, uint16_t mask);    //mask 0xFFFF
+void unsigned32ToPayload(uint8_t* payload, size_t payload_length, int index, uint32_t value, uint32_t mask); //mask = 0xFFFFFFFF
+void signed32ToPayload(uint8_t* payload, size_t payload_length, int index, int32_t value, uint32_t mask);    //mask  = 0xFFFFFFFF
+void float16ToPayload(uint8_t* payload, size_t payload_length, int index, double value, uint16_t mask);      //mask = 0xFFFF
+void float32ToPayload(uint8_t* payload, size_t payload_length, int index, double value, uint32_t mask);      //mask  = 0xFFFFFFFF
+void signed64ToPayload(uint8_t* payload, size_t payload_length, int index, int64_t value, uint64_t mask);    //mask = UINT64_C(0xFFFFFFFFFFFFFFFF)
+void bcdToPayload(uint8_t* payload, size_t payload_length, int index, uint8_t value);

components/knx/src/knx/function_property.h

@@ -0,0 +1,53 @@
+#pragma once
+
+#include "property.h"
+
+class InterfaceObject;
+
+template <class T> class FunctionProperty : public Property
+{
+    public:
+        FunctionProperty(T* io, PropertyID id,
+                         void (*commandCallback)(T*, uint8_t*, uint8_t, uint8_t*, uint8_t&),
+                         void (*stateCallback)(T*, uint8_t*, uint8_t, uint8_t*, uint8_t&))
+            : Property(id, false, PDT_FUNCTION, 1, ReadLv0 | WriteLv0), _interfaceObject(io), _commandCallback(commandCallback), _stateCallback(stateCallback)
+              /* max_elements is set to 1, read and write level any value so we use Lv0, see 3.3.7 Application Layer p.68 */
+        {}
+
+        uint8_t read(uint16_t start, uint8_t count, uint8_t* data) const override
+        {
+            return 0;
+        }
+
+        uint8_t write(uint16_t start, uint8_t count, const uint8_t* data) override
+        {
+            return 0;
+        }
+
+        void command(uint8_t* data, uint8_t length, uint8_t* resultData, uint8_t& resultLength) override
+        {
+            if (length == 0 || _commandCallback == nullptr )
+            {
+                resultLength = 0;
+                return;
+            }
+
+            _commandCallback(_interfaceObject, data, length, resultData, resultLength);
+        }
+
+        void state(uint8_t* data, uint8_t length, uint8_t* resultData, uint8_t& resultLength) override
+        {
+            if (length == 0 || _stateCallback == nullptr )
+            {
+                resultLength = 0;
+                return;
+            }
+
+            _stateCallback(_interfaceObject, data, length, resultData, resultLength);
+        }
+
+    private:
+        T* _interfaceObject = nullptr;
+        void (*_commandCallback)(T*, uint8_t*, uint8_t, uint8_t*, uint8_t&) = nullptr;
+        void (*_stateCallback)(T*, uint8_t*, uint8_t, uint8_t*, uint8_t&) = nullptr;
+};

components/knx/src/knx/group_object.cpp

@@ -0,0 +1,356 @@
+#include "group_object.h"
+#include "bits.h"
+#include "string.h"
+#include "datapoint_types.h"
+#include "group_object_table_object.h"
+
+#ifdef SMALL_GROUPOBJECT
+    GroupObjectUpdatedHandler GroupObject::_updateHandlerStatic = 0;
+#endif
+GroupObjectTableObject* GroupObject::_table = 0;
+
+GroupObject::GroupObject()
+{
+    _data = 0;
+    _uninitialized = true;
+    _commFlag = Uninitialized;
+    _dataLength = 0;
+#ifndef SMALL_GROUPOBJECT
+    _updateHandler = 0;
+#endif
+}
+
+GroupObject::~GroupObject()
+{
+    if (_data)
+        delete[] _data;
+}
+
+bool GroupObject::responseUpdateEnable()
+{
+    if (!_table)
+        return false;
+
+    return bitRead(ntohs(_table->_tableData[_asap]), 15) > 0;
+}
+
+bool GroupObject::transmitEnable()
+{
+    if (!_table)
+        return false;
+
+    return bitRead(ntohs(_table->_tableData[_asap]), 14) > 0 ;
+}
+
+bool GroupObject::valueReadOnInit()
+{
+    if (!_table)
+        return false;
+
+    return bitRead(ntohs(_table->_tableData[_asap]), 13) > 0;
+}
+
+bool GroupObject::writeEnable()
+{
+    if (!_table)
+        return false;
+
+    return bitRead(ntohs(_table->_tableData[_asap]), 12) > 0 ;
+}
+
+bool GroupObject::readEnable()
+{
+    if (!_table)
+        return false;
+
+    // we forbid reading of new (uninitialized) go
+    if (_uninitialized)
+        return false;
+
+    return bitRead(ntohs(_table->_tableData[_asap]), 11) > 0;
+}
+
+bool GroupObject::communicationEnable()
+{
+    if (!_table)
+        return false;
+
+    return bitRead(ntohs(_table->_tableData[_asap]), 10) > 0;
+}
+
+
+Priority GroupObject::priority()
+{
+    if (!_table)
+        return LowPriority;
+
+    return (Priority)((ntohs(_table->_tableData[_asap]) >> 6) & (3 << 2)) ;
+}
+
+uint8_t* GroupObject::valueRef()
+{
+    return _data;
+}
+
+uint16_t GroupObject::asap()
+{
+    return _asap;
+}
+
+size_t GroupObject::goSize()
+{
+    size_t size = sizeInTelegram();
+
+    if (size == 0)
+        return 1;
+
+    return size;
+}
+
+// see knxspec 3.5.1 p. 178
+size_t GroupObject::asapValueSize(uint8_t code) const
+{
+    if (code < 7)
+        return 0;
+
+    if (code < 8)
+        return 1;
+
+    if (code < 11 || (code > 20 && code < 255))
+        return code - 6;
+
+    switch (code)
+    {
+        case 11:
+            return 6;
+
+        case 12:
+            return 8;
+
+        case 13:
+            return 10;
+
+        case 14:
+            return 14;
+
+        case 15:
+            return 5;
+
+        case 16:
+            return 7;
+
+        case 17:
+            return 9;
+
+        case 18:
+            return 11;
+
+        case 19:
+            return 12;
+
+        case 20:
+            return 13;
+
+        case 255:
+            return 252;
+    }
+
+    return -1;
+}
+
+
+ComFlag GroupObject::commFlag()
+{
+    return _commFlag;
+}
+
+void GroupObject::commFlag(ComFlag value)
+{
+    _commFlag = value;
+
+    if (value == WriteRequest || value == Updated || value == Ok)
+        _uninitialized = false;
+}
+
+bool GroupObject::initialized()
+{
+    return !_uninitialized;
+}
+
+void GroupObject::requestObjectRead()
+{
+    commFlag(ReadRequest);
+}
+
+void GroupObject::objectWritten()
+{
+    commFlag(WriteRequest);
+}
+
+size_t GroupObject::valueSize()
+{
+    return _dataLength;
+}
+
+size_t GroupObject::sizeInTelegram()
+{
+    uint8_t code = lowByte(ntohs(_table->_tableData[_asap]));
+    return asapValueSize(code);
+}
+
+size_t GroupObject::sizeInMemory() const
+{
+    uint8_t code = lowByte(ntohs(_table->_tableData[_asap]));
+    size_t result = asapValueSize(code);
+
+    if (result == 0)
+        return 1;
+
+    if (code == 14)
+        return 14 + 1;
+
+    return result;
+}
+
+#ifdef SMALL_GROUPOBJECT
+GroupObjectUpdatedHandler GroupObject::classCallback()
+{
+    return _updateHandlerStatic;
+}
+
+void GroupObject::classCallback(GroupObjectUpdatedHandler handler)
+{
+    _updateHandlerStatic = handler;
+}
+
+void GroupObject::processClassCallback(GroupObject& ko)
+{
+    if (_updateHandlerStatic != 0)
+        _updateHandlerStatic(ko);
+}
+
+#else
+void GroupObject::callback(GroupObjectUpdatedHandler handler)
+{
+    _updateHandler = handler;
+}
+
+
+GroupObjectUpdatedHandler GroupObject::callback()
+{
+    return _updateHandler;
+}
+#endif
+
+bool GroupObject::value(const KNXValue& value, const Dpt& type)
+{
+    if (valueNoSend(value, type))
+    {
+        // write on successful conversion/setting value only
+        objectWritten();
+        return true;
+    }
+    return false;
+}
+
+
+KNXValue GroupObject::value(const Dpt& type)
+{
+    KNXValue value = "";
+    KNX_Decode_Value(_data, _dataLength, type, value);
+    return value;
+}
+
+bool GroupObject::tryValue(KNXValue& value, const Dpt& type)
+{
+    return KNX_Decode_Value(_data, _dataLength, type, value);
+}
+
+#ifndef SMALL_GROUPOBJECT
+void GroupObject::dataPointType(Dpt value)
+{
+    _datapointType = value;
+}
+
+
+Dpt GroupObject::dataPointType()
+{
+    return _datapointType;
+}
+
+
+bool GroupObject::tryValue(KNXValue& value)
+{
+    return tryValue(value, _datapointType);
+}
+
+
+bool GroupObject::value(const KNXValue& value)
+{
+    return this->value(value, _datapointType);
+}
+
+
+KNXValue GroupObject::value()
+{
+    return value(_datapointType);
+}
+
+
+bool GroupObject::valueNoSend(const KNXValue& value)
+{
+    return valueNoSend(value, _datapointType);
+}
+#endif
+
+bool GroupObject::valueNoSend(const KNXValue& value, const Dpt& type)
+{
+    const bool encodingDone = KNX_Encode_Value(value, _data, _dataLength, type);
+
+    // initialize on succesful conversion only
+    if (encodingDone && _uninitialized)
+        commFlag(Ok);
+
+    return encodingDone;
+}
+
+bool GroupObject::valueNoSendCompare(const KNXValue& value, const Dpt& type)
+{
+    if (_uninitialized)
+    {
+        // always set first value
+        return valueNoSend(value, type);
+    }
+    else
+    {
+        // convert new value to given DPT
+        uint8_t newData[_dataLength];
+        memset(newData, 0, _dataLength);
+        const bool encodingDone = KNX_Encode_Value(value, newData, _dataLength, type);
+        if (!encodingDone)
+        {
+            // value conversion to DPT failed
+            // do NOT update the value of the KO!
+            return false;
+        }
+
+        // check for change in converted value / update value on change only
+        const bool dataChanged = memcmp(_data, newData, _dataLength);
+
+        if (dataChanged)
+            memcpy(_data, newData, _dataLength);
+
+        return dataChanged;
+    }
+}
+
+bool GroupObject::valueCompare(const KNXValue& value, const Dpt& type)
+{
+    if (valueNoSendCompare(value, type))
+    {
+        objectWritten();
+        return true;
+    }
+
+    return false;
+}

components/knx/src/knx/group_object.h

@@ -0,0 +1,287 @@
+#pragma once
+
+#include <stddef.h>
+#include <stdint.h>
+#include "knx_types.h"
+#include "dptconvert.h"
+
+class GroupObjectTableObject;
+
+enum ComFlag : uint8_t
+{
+    Updated = 0,      //!< Group object was updated
+    ReadRequest = 1,  //!< Read was requested but was not processed
+    WriteRequest = 2, //!< Write was requested but was not processed
+    Transmitting = 3, //!< Group Object is processed a the moment (read or write)
+    Ok = 4,           //!< read or write request were send successfully
+    Error = 5,        //!< there was an error on processing a request
+    Uninitialized = 6 //!< uninitialized Group Object, its value is not valid
+};
+
+class GroupObject;
+
+#ifndef HAS_FUNCTIONAL
+    #if defined(__linux__) || defined(ARDUINO_ARCH_ESP32) || defined(ESP_PLATFORM) || defined(ARDUINO_ARCH_STM32) || defined (ARDUINO_ARCH_SAMD) || defined (ARDUINO_ARCH_RP2040) || defined(LIBRETINY)
+        #define HAS_FUNCTIONAL    1
+    #else
+        #define HAS_FUNCTIONAL   0
+    #endif
+#endif
+
+#if HAS_FUNCTIONAL
+    #include <functional>
+    typedef std::function<void(GroupObject&)> GroupObjectUpdatedHandler;
+#else
+    typedef void (*GroupObjectUpdatedHandler)(GroupObject& go);
+#endif
+
+/**
+ * This class represents a single group object. In german they are called "Kommunikationsobjekt" or "KO".
+ */
+class GroupObject
+{
+        friend class GroupObjectTableObject;
+        GroupObject(const GroupObject& other) = delete;
+    public:
+        /**
+         * The constructor.
+         */
+        GroupObject();
+        /**
+         * The destructor.
+         */
+        virtual ~GroupObject();
+        // config flags from ETS
+        /**
+         * Check if the update flag (U) was set. (A-flag in german)
+         */
+        bool responseUpdateEnable();
+        /**
+         * Check if the transmit flag (T) was set. (UE-flag in german)
+         */
+        bool transmitEnable();
+        /**
+         * Check if the initialisation flag (I) was set.
+         */
+        bool valueReadOnInit();
+        /**
+         * Check if the write flag (W) was set. (S-flag in german)
+         */
+        bool writeEnable();
+        /**
+         * Check if the read flag (R) was set. (L-flag in german)
+         */
+        bool readEnable();
+        /**
+         * Check if the communication flag (C) was set. (K-flag in german)
+         */
+        bool communicationEnable();
+
+        /**
+         * Get the priority of the group object.
+         */
+        Priority priority();
+
+        /**
+         * Return the current state of the group object. See ::ComFlag
+         */
+        ComFlag commFlag();
+        /**
+         * Set the current state of the group object. Application code should only use this to set the state to ::Ok after
+         * reading a ::Updated to mark the changed group object as processed. This is optional.
+         */
+        void commFlag(ComFlag value);
+
+        /**
+         * Check if the group object contains a valid value assigned from bus or from application program
+         */
+        bool initialized();
+
+        /**
+        * Request the read of a communication object. Calling this function triggers the
+        * sending of a read-group-value telegram, to read the value of the communication
+        * object from the bus.
+        *
+        * When the answer is received, the communication object's value will be updated.
+        *
+        * This sets the state of the group objecte to ::ReadRequest
+        */
+        void requestObjectRead();
+        /**
+        * Mark a communication object as written. Calling this
+        * function triggers the sending of a write-group-value telegram.
+        *
+        * This sets the state of the group object to ::WriteRequest
+        */
+        void objectWritten();
+
+        /**
+         * returns the size of the group object in Byte. For Group objects with size smaller than 1 byte (for example Dpt 1) this method
+         * will return 1.
+         */
+        size_t valueSize();
+        /**
+         * returns the size of the group object in Byte as it is in a telegram. For Group objects with size smaller than 1 byte (for example Dpt 1) this method
+         * will return 0.
+         */
+        size_t sizeInTelegram();
+        /**
+         * returns the size of the group object in the heap memory of the group object. The function returns the same value as goSize(),
+         * exept fot the 14 byte string type to reserve one byte of a \0 terminator character.
+         */
+        size_t sizeInMemory() const;
+        /**
+         * returns the pointer to the value of the group object. This can be used if a datapoint type is not supported or if you want do
+         * your own conversion.
+         */
+        uint8_t* valueRef();
+        /**
+         * returns the Application Service Access Point of the group object. In reality this is just the number of the group object.
+         * (in german "KO-Nr")
+         */
+        uint16_t asap();
+
+#ifndef SMALL_GROUPOBJECT
+        /**
+         * register a callback for this group object. The registered callback will be called if the group object was changed from the bus.
+         */
+        void callback(GroupObjectUpdatedHandler handler);
+        /**
+         * returns the registered callback
+         */
+        GroupObjectUpdatedHandler callback();
+#endif
+        /**
+         * return the current value of the group object.
+         * @param type the datapoint type used for the conversion. If this doesn't fit to the group object the returned value is invalid.
+         */
+        KNXValue value(const Dpt& type);
+        /**
+         * set the current value of the group object and changes the state of the group object to ::WriteRequest.
+         * @param value the value the group object is set to
+         * @param type the datapoint type used for the conversion.
+         *
+         * The parameters must fit the group object. Otherwise it will stay unchanged.
+         *
+         * @returns true if the value was converted successfully to the datapoint type and the group object was updated.
+         */
+        bool value(const KNXValue& value, const Dpt& type);
+
+        /**
+         * Check if the value (after conversion to dpt) will differ from current value of the group object and changes the state of the group object to ::WriteRequest if different.
+         * Use this method only, when the value should not be sent if it was not changed, otherwise value(const KNXValue&, const Dpt&) will do the same (without overhead for comparing)
+         * @param value the value the group object is set to
+         * @param type the datapoint type used for the conversion.
+         *
+         * The parameters must fit the group object. Otherwise it will stay unchanged.
+         *
+         * @returns true if the value of the group object has changed, false if conversion results in same value as stored in group object or failed.
+         */
+        bool valueCompare(const KNXValue& value, const Dpt& type);
+
+        /**
+         * set the current value of the group objectand show success.
+         * @param value the value the group object is set to
+         * @param type the datapoint type used for the conversion.
+         *
+         * The parameters must fit the group object. Otherwise it will stay unchanged.
+         *
+         * @returns true if value was converted successfully to the datapoint type and the group object was updated.
+         */
+        bool valueNoSend(const KNXValue& value, const Dpt& type);
+
+        /**
+         * Check if the value (after conversion to dpt) will differ from current value of the group object and update if necessary.
+         * Use this method only, when the value change is relevant, otherwise valueNoSend(const KNXValue&, const Dpt&) will do the same (without overhead for comparing)
+         * @param value the value the group object is set to
+         * @param type the datapoint type used for the conversion.
+         *
+         * The parameters must fit the group object. Otherwise it will stay unchanged.
+         *
+         * @returns true if the value of the group object has changed, false if conversion results in same value as stored in group object or failed.
+         */
+        bool valueNoSendCompare(const KNXValue& value, const Dpt& type);
+
+        /**
+         * set the current value of the group object.
+         * @param value the value the group object is set to
+         * @param type the datapoint type used for the conversion.
+         *
+         * The parameters must fit the group object. Otherwise it will stay unchanged.
+         *
+         * @returns true if the value of the group object was changed successfully.
+         */
+        bool tryValue(KNXValue& value, const Dpt& type);
+
+#ifndef SMALL_GROUPOBJECT
+        /**
+         * return the current value of the group object. The datapoint type must be set with dataPointType(). Otherwise the returned
+         * value is invalid.
+         */
+        KNXValue value();
+        /**
+         * set the current value of the group object and changes the state of the group object to ::WriteRequest.
+         * @param value the value the group object is set to
+         *
+         * The parameters must fit the group object and dhe datapoint type must be set with dataPointType(). Otherwise it will stay unchanged.
+         *
+         * @returns true if the value was converted successfully to the datapoint type and the group object was updated.
+         */
+        bool value(const KNXValue& value);
+        /**
+         * set the current value of the group object.
+         * @param value the value the group object is set to
+         *
+         * The parameters must fit the group object and the datapoint type must be set with dataPointType(). Otherwise it will stay unchanged.
+         *
+         * @returns true if the value was converted successfully to the datapoint type and the group object was updated.
+         */
+        bool valueNoSend(const KNXValue& value);
+        /**
+         * set the current value of the group object.
+         * @param value the value the group object is set to
+         *
+         * The parameters must fit the group object and dhe datapoint type must be set with dataPointType(). Otherwise it will stay unchanged.
+         *
+         * @returns true if the value of the group object was changed successfully.
+         */
+        bool tryValue(KNXValue& value);
+
+        /**
+         * returns the currently configured datapoint type.
+         */
+        Dpt dataPointType();
+        /**
+         * sets the datapoint type of the group object.
+         */
+        void dataPointType(Dpt value);
+#else
+        /**
+         * Alternative callback processing: register one global callback for all group object.
+         * The registered callback will be called if any group object was changed from the bus.
+         * The callback method has to dispatch to the correct handler for this group object.
+         */
+        static GroupObjectUpdatedHandler classCallback();
+        static void classCallback(GroupObjectUpdatedHandler handler);
+        static void processClassCallback(GroupObject& ko);
+#endif
+
+    private:
+        // class members
+        static GroupObjectTableObject* _table;
+#ifdef SMALL_GROUPOBJECT
+        static GroupObjectUpdatedHandler _updateHandlerStatic;
+#endif
+
+        size_t asapValueSize(uint8_t code) const;
+        size_t goSize();
+        uint16_t _asap = 0;
+        bool _uninitialized : 1;
+        ComFlag _commFlag : 7;
+        uint8_t* _data = 0;
+        uint8_t _dataLength = 0;
+#ifndef SMALL_GROUPOBJECT
+        GroupObjectUpdatedHandler _updateHandler;
+        Dpt _datapointType;
+#endif
+};

components/knx/src/knx/group_object_table_object.cpp

@@ -0,0 +1,131 @@
+#include <cstring>
+
+#include "group_object_table_object.h"
+#include "group_object.h"
+#include "bits.h"
+#include "data_property.h"
+
+GroupObjectTableObject::GroupObjectTableObject(Memory& memory)
+    : TableObject(memory)
+{
+    Property* properties[]
+    {
+        new DataProperty(PID_OBJECT_TYPE, false, PDT_UNSIGNED_INT, 1, ReadLv3 | WriteLv0, (uint16_t)OT_GRP_OBJ_TABLE)
+    };
+    TableObject::initializeProperties(sizeof(properties), properties);
+}
+
+GroupObjectTableObject::~GroupObjectTableObject()
+{
+    freeGroupObjects();
+}
+
+uint16_t GroupObjectTableObject::entryCount()
+{
+    if (loadState() != LS_LOADED)
+        return 0;
+
+    return ntohs(_tableData[0]);
+}
+
+GroupObject& GroupObjectTableObject::get(uint16_t asap)
+{
+    return _groupObjects[asap - 1];
+}
+
+const uint8_t* GroupObjectTableObject::restore(const uint8_t* buffer)
+{
+    buffer = TableObject::restore(buffer);
+
+    _tableData = (uint16_t*)data();
+    initGroupObjects();
+
+    return buffer;
+}
+
+GroupObject& GroupObjectTableObject::nextUpdatedObject(bool& valid)
+{
+    static uint16_t startIdx = 1;
+
+    uint16_t objCount = entryCount();
+
+    for (uint16_t asap = startIdx; asap <= objCount; asap++)
+    {
+        GroupObject& go = get(asap);
+
+        if (go.commFlag() == Updated)
+        {
+            go.commFlag(Ok);
+            startIdx = asap + 1;
+            valid = true;
+            return go;
+        }
+    }
+
+    startIdx = 1;
+    valid = false;
+    return get(1);
+}
+
+void GroupObjectTableObject::groupObjects(GroupObject* objs, uint16_t size)
+{
+    freeGroupObjects();
+    _groupObjects = objs;
+    _groupObjectCount = size;
+    initGroupObjects();
+}
+
+void GroupObjectTableObject::beforeStateChange(LoadState& newState)
+{
+    TableObject::beforeStateChange(newState);
+
+    if (newState != LS_LOADED)
+        return;
+
+    _tableData = (uint16_t*)data();
+
+    if (!initGroupObjects())
+    {
+        newState = LS_ERROR;
+        TableObject::errorCode(E_SOFTWARE_FAULT);
+    }
+}
+
+bool GroupObjectTableObject::initGroupObjects()
+{
+    if (!_tableData)
+        return false;
+
+    freeGroupObjects();
+
+    uint16_t goCount = ntohs(_tableData[0]);
+
+    _groupObjects = new GroupObject[goCount];
+    _groupObjectCount = goCount;
+
+    for (uint16_t asap = 1; asap <= goCount; asap++)
+    {
+        GroupObject& go = _groupObjects[asap - 1];
+        go._asap = asap;
+        go._table = this;
+
+        go._dataLength = go.goSize();
+        size_t sizeInMemory = go.sizeInMemory();
+        go._data = new uint8_t[sizeInMemory];
+        memset(go._data, 0, sizeInMemory);
+
+        if (go.valueReadOnInit())
+            go.requestObjectRead();
+    }
+
+    return true;
+}
+
+void GroupObjectTableObject::freeGroupObjects()
+{
+    if (_groupObjects)
+        delete[] _groupObjects;
+
+    _groupObjectCount = 0;
+    _groupObjects = 0;
+}

components/knx/src/knx/group_object_table_object.h

@@ -0,0 +1,29 @@
+#pragma once
+
+#include "table_object.h"
+#include "group_object.h"
+
+class GroupObjectTableObject : public TableObject
+{
+        friend class GroupObject;
+
+    public:
+        GroupObjectTableObject(Memory& memory);
+        virtual ~GroupObjectTableObject();
+        uint16_t entryCount();
+        GroupObject& get(uint16_t asap);
+        GroupObject& nextUpdatedObject(bool& valid);
+        void groupObjects(GroupObject* objs, uint16_t size);
+
+        const uint8_t* restore(const uint8_t* buffer) override;
+
+    protected:
+        void beforeStateChange(LoadState& newState) override;
+
+    private:
+        void freeGroupObjects();
+        bool initGroupObjects();
+        uint16_t* _tableData = 0;
+        GroupObject* _groupObjects = 0;
+        uint16_t _groupObjectCount = 0;
+};

components/knx/src/knx/interface_object.cpp

@@ -0,0 +1,232 @@
+#include <cstring>
+
+#include "interface_object.h"
+#include "data_property.h"
+
+InterfaceObject::~InterfaceObject()
+{
+    if (_properties != nullptr)
+        delete[] _properties;
+}
+
+void InterfaceObject::readPropertyDescription(uint8_t& propertyId, uint8_t& propertyIndex, bool& writeEnable, uint8_t& type, uint16_t& numberOfElements, uint8_t& access)
+{
+    uint8_t count = _propertyCount;
+
+    numberOfElements = 0;
+
+    if (_properties == nullptr || count == 0)
+        return;
+
+    Property* prop = nullptr;
+
+    // from KNX spec. 03.03.07 Application Layer (page 56) - 3.4.3.3  A_PropertyDescription_Read-service
+    // Summary: either propertyId OR propertyIndex, but not both at the same time
+    if (propertyId != 0)
+    {
+        for (uint8_t i = 0; i < count; i++)
+        {
+            Property* p = _properties[i];
+
+            if (p->Id() != propertyId)
+                continue;
+
+            prop = p;
+            propertyIndex = i;
+            break;
+        }
+    }
+    else
+    {
+        // If propertyId is zero, propertyIndex shall be used.
+        // Response: propertyIndex of received A_PropertyDescription_Read
+        if (propertyIndex < count)
+        {
+            prop = _properties[propertyIndex];
+        }
+    }
+
+    if (prop != nullptr)
+    {
+        propertyId = prop->Id();
+        writeEnable = prop->WriteEnable();
+        type = prop->Type();
+        numberOfElements = prop->MaxElements();
+        access = prop->Access();
+    }
+}
+
+void InterfaceObject::masterReset(EraseCode eraseCode, uint8_t channel)
+{
+    // every interface object shall implement this
+    // However, for the time being we provide an empty default implementation
+}
+
+void InterfaceObject::readPropertyLength(PropertyID id, uint16_t& length)
+{
+    uint8_t count = 1;
+    uint16_t propval = 0;
+    readProperty(id, 0, count, (uint8_t*)&propval);
+
+    if (count == 0)
+    {
+        length = 0;
+        return;
+    }
+
+    length = ntohs(propval);
+}
+
+void InterfaceObject::readProperty(PropertyID id, uint16_t start, uint8_t& count, uint8_t* data)
+{
+    Property* prop = property(id);
+
+    if (prop == nullptr)
+    {
+        count = 0;
+        return;
+    }
+
+    count = prop->read(start, count, data);
+}
+
+void InterfaceObject::writeProperty(PropertyID id, uint16_t start, uint8_t* data, uint8_t& count)
+{
+    Property* prop = property(id);
+
+    if (prop == nullptr)
+    {
+        count = 0;
+        return;
+    }
+
+    count = prop->write(start, count, data);
+}
+
+uint8_t InterfaceObject::propertySize(PropertyID id)
+{
+    Property* prop = property(id);
+
+    if (prop == nullptr)
+    {
+        return 0;
+    }
+
+    return prop->ElementSize();
+}
+
+void InterfaceObject::command(PropertyID id, uint8_t* data, uint8_t length, uint8_t* resultData, uint8_t& resultLength)
+{
+    Property* prop = property(id);
+
+    if (prop == nullptr)
+    {
+        resultLength = 0;
+        return;
+    }
+
+    prop->command(data, length, resultData, resultLength);
+}
+
+void InterfaceObject::state(PropertyID id, uint8_t* data, uint8_t length, uint8_t* resultData, uint8_t& resultLength)
+{
+    Property* prop = property(id);
+
+    if (prop == nullptr)
+    {
+        resultLength = 0;
+        return;
+    }
+
+    prop->state(data, length, resultData, resultLength);
+}
+
+void InterfaceObject::initializeProperties(size_t propertiesSize, Property** properties)
+{
+    _propertyCount = propertiesSize / sizeof(Property*);
+    _properties = new Property*[_propertyCount];
+    memcpy(_properties, properties, propertiesSize);
+}
+
+
+Property* InterfaceObject::property(PropertyID id)
+{
+    for (int i = 0; i < _propertyCount; i++)
+        if (_properties[i]->Id() == id)
+            return _properties[i];
+
+    return nullptr;
+}
+
+
+uint8_t* InterfaceObject::save(uint8_t* buffer)
+{
+    for (int i = 0; i < _propertyCount; i++)
+    {
+        Property* prop = _properties[i];
+
+        if (!prop->WriteEnable())
+            continue;
+
+        buffer = prop->save(buffer);
+    }
+
+    return buffer;
+}
+
+
+const uint8_t* InterfaceObject::restore(const uint8_t* buffer)
+{
+    for (int i = 0; i < _propertyCount; i++)
+    {
+        Property* prop = _properties[i];
+
+        if (!prop->WriteEnable())
+            continue;
+
+        buffer = prop->restore(buffer);
+    }
+
+    return buffer;
+}
+
+
+uint16_t InterfaceObject::saveSize()
+{
+    uint16_t size = 0;
+
+    for (int i = 0; i < _propertyCount; i++)
+    {
+        Property* prop = _properties[i];
+
+        if (!prop->WriteEnable())
+            continue;
+
+        size += prop->saveSize();
+    }
+
+    return size;
+}
+
+
+const Property* InterfaceObject::property(PropertyID id) const
+{
+    for (int i = 0; i < _propertyCount; i++)
+        if (_properties[i]->Id() == id)
+            return _properties[i];
+
+    return nullptr;
+}
+
+
+const uint8_t* InterfaceObject::propertyData(PropertyID id)
+{
+    DataProperty* prop = (DataProperty*)property(id);
+    return prop->data();
+}
+
+const uint8_t* InterfaceObject::propertyData(PropertyID id, uint16_t elementIndex)
+{
+    DataProperty* prop = (DataProperty*)property(id);
+    return prop->data(elementIndex);
+}

components/knx/src/knx/interface_object.h

@@ -0,0 +1,210 @@
+#pragma once
+
+#include <stddef.h>
+#include "property.h"
+#include "save_restore.h"
+#include "knx_types.h"
+#include "bits.h"
+
+/** Enum for the type of an interface object. See Section 2.2 of knx:3/7/3 */
+enum ObjectType
+{
+    /** Device object. */
+    OT_DEVICE = 0,
+
+    /** Address table object. */
+    OT_ADDR_TABLE = 1,
+
+    /** Association table object. */
+    OT_ASSOC_TABLE = 2,
+
+    /** Application program object. */
+    OT_APPLICATION_PROG = 3,
+
+    /** Interface program object. */
+    OT_INTERFACE_PROG = 4,
+
+    /** KNX - Object Associationtable. */
+    OT_OJB_ASSOC_TABLE = 5,
+
+    /** Router Object */
+    OT_ROUTER = 6,
+
+    /** LTE Address Routing Table Object */
+    OT_LTE_ADDR_ROUTING_TABLE = 7,
+
+    /** cEMI Server Object */
+    OT_CEMI_SERVER = 8,
+
+    /** Group Object Table Object */
+    OT_GRP_OBJ_TABLE = 9,
+
+    /** Polling Master */
+    OT_POLLING_MASTER = 10,
+
+    /** KNXnet/IP Parameter Object */
+    OT_IP_PARAMETER = 11,
+
+    /** Reserved. Shall not be used. */
+    OT_RESERVED = 12,
+
+    /** File Server Object */
+    OT_FILE_SERVER = 13,
+
+    /** Security Interface Object */
+    OT_SECURITY = 17,
+
+    /** RF Medium Object */
+    OT_RF_MEDIUM = 19,
+
+    /** Dummy so this enum is 16bit */
+    OT_DUMMY = 0xFFFF
+};
+
+/**
+ * This class represents and interface object. See section 4 of @cite knx:3/4/1.
+ */
+class InterfaceObject : public SaveRestore
+{
+    public:
+        /**
+         * Destructor
+         */
+        virtual ~InterfaceObject();
+        /**
+         * Read length of a property of the interface object. See section 4.8.4.2 of @cite knx:3/4/1.
+         *
+         * @param id id of the property to read
+         *
+         * @param[out] length length of the requested property
+         */
+        virtual void readPropertyLength(PropertyID id, uint16_t& length);
+        /**
+         * Read a property of the interface object. See section 4.8.4.2 of @cite knx:3/4/1.
+         *
+         * @param id id of the property to read
+         *
+         * @param start (for properties with multiple values) at which element should we start
+         *
+         * @param[in, out] count how many values should be read. If there is a problem (e.g. property does not exist)
+         *        this value is set to 0.
+         *
+         * @param[out] data The requested data of the property.
+         */
+        virtual void readProperty(PropertyID id, uint16_t start, uint8_t& count, uint8_t* data);
+        /**
+         * Write property of the interface object. If the interface object does not have the property this
+         * method does nothing. See section 4.8.4.4 of @cite knx:3/4/1.
+         *
+         * @param id id of the property to write
+         *
+         * @param start (for properties with multiple values) at which element should we start
+         *
+         * @param[in, out] count how many values should be written. If there is a problem (e.g. property does not exist)
+         *        this value is set to 0.
+         *
+         * @param[in] data The data that should be written.
+         */
+        virtual void writeProperty(PropertyID id, uint16_t start, uint8_t* data, uint8_t& count);
+        /**
+         * Gets the size of of property in bytes.
+         *
+         * @param id of the property to get the size of
+         *
+         * @returns the size in byte or 0 if the interface object does not have the property
+         */
+        virtual uint8_t propertySize(PropertyID id);
+        /**
+         * Call command of a function property of the interface object. Property type must be PDT_FUNCTION
+         *
+         * @param id id of the property to call
+         *
+         * @param[in] length The size of the data buffer
+         *
+         * @param[in] data The argument data for the function
+         *
+         * @param[out] resultLength The size of the result data buffer
+         *
+         * @param[out] resultData The result data for the function
+         */
+        virtual void command(PropertyID id, uint8_t* data, uint8_t length, uint8_t* resultData, uint8_t& resultLength);
+        /**
+         * Get state of a function property of the interface object. Property type must be PDT_FUNCTION
+         *
+         * @param id id of the property to call
+         *
+         * @param[in] length The size of the data buffer
+         *
+         * @param[in] data The argument data for the function
+         *
+         * @param[out] resultLength The size of the result data buffer
+         *
+         * @param[out] resultData The result data for the function
+         */
+        virtual void state(PropertyID id, uint8_t* data, uint8_t length, uint8_t* resultData, uint8_t& resultLength);
+        /**
+         * Read the Description of a property of the interface object. The output parameters are only valid if nuberOfElements is not zero.
+         *
+         * @param[in,out] propertyId The id of the property of which to read the description of. If this parameter is not zero
+         *        propertyIndex paramter is ignored as input and the corrrect index of the property is written to it. If this
+         *        parameter is zero the ::PropertyID of the property specified by propertyIndex is written to it.
+         *
+         * @param[in,out] propertyIndex The index of the property of the interface object of which to read the description of.
+         *        only used for input if propertyId is not set. Otherwise the index of the property specified by propertyId is written to it.
+         *
+         * @param[out] writeEnable Can the property be written to.
+         *
+         * @param[out] type the ::PropertyDataType of the property
+         *
+         * @param[out] numberOfElements the number of elements of the property. Zero if the interface object does not have the requested property.
+         *
+         * @param[out] access the ::AccessLevel necessary to read/write the property.
+         */
+        void readPropertyDescription(uint8_t& propertyId, uint8_t& propertyIndex, bool& writeEnable, uint8_t& type, uint16_t& numberOfElements, uint8_t& access);
+
+        // every interface object shall implement this
+        // However, for the time being we provide an empty default implementation
+        virtual void masterReset(EraseCode eraseCode, uint8_t channel);
+
+        /**
+         * Gets property with PropertyID id if it exists and nullptr otherwise.
+         */
+        Property* property(PropertyID id);
+
+        template <typename T>
+        T propertyValue(PropertyID id)
+        {
+            const Property* prop = property(id);
+
+            T value = 0;
+            prop->read(value);
+            return value;
+        }
+
+        template <typename T>
+        void propertyValue(PropertyID id, T value)
+        {
+            Property* prop = property(id);
+            prop->write(value);
+        }
+
+        const uint8_t* propertyData(PropertyID id);
+        const uint8_t* propertyData(PropertyID id, uint16_t elementIndex);
+        /**
+         * Gets const property with PropertyID id if it exists and nullptr otherwise.
+         */
+        const Property* property(PropertyID id) const;
+
+        uint8_t* save(uint8_t* buffer) override;
+        const uint8_t* restore(const uint8_t* buffer) override;
+        uint16_t saveSize() override;
+
+    protected:
+        /**
+         * Intializes the Property-array the the supplied values.
+         */
+        virtual void initializeProperties(size_t propertiesSize, Property** properties);
+
+        Property** _properties = nullptr;
+        uint8_t _propertyCount = 0;
+};

components/knx/src/knx/ip_data_link_layer.h

@@ -0,0 +1,59 @@
+#pragma once
+
+#include "config.h"
+#ifdef USE_IP
+
+#include <stdint.h>
+#include "data_link_layer.h"
+#include "ip_parameter_object.h"
+#include "knx_ip_tunnel_connection.h"
+#include "service_families.h"
+
+class IpDataLinkLayer : public DataLinkLayer
+{
+        using DataLinkLayer::_deviceObject;
+
+    public:
+        IpDataLinkLayer(DeviceObject& devObj, IpParameterObject& ipParam, NetworkLayerEntity& netLayerEntity,
+                        Platform& platform, DataLinkLayerCallbacks* dllcb = nullptr);
+
+        void loop();
+        void enabled(bool value);
+        bool enabled() const;
+        DptMedium mediumType() const override;
+#ifdef KNX_TUNNELING
+        void dataRequestToTunnel(CemiFrame& frame) override;
+        void dataConfirmationToTunnel(CemiFrame& frame) override;
+        void dataIndicationToTunnel(CemiFrame& frame) override;
+        bool isTunnelAddress(uint16_t addr) override;
+        bool isSentToTunnel(uint16_t address, bool isGrpAddr);
+#endif
+
+    private:
+        bool _enabled = false;
+        uint8_t _frameCount[10] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
+        uint8_t _frameCountBase = 0;
+        uint32_t _frameCountTimeBase = 0;
+        bool sendFrame(CemiFrame& frame);
+#ifdef KNX_TUNNELING
+        void sendFrameToTunnel(KnxIpTunnelConnection* tunnel, CemiFrame& frame);
+        void loopHandleConnectRequest(uint8_t* buffer, uint16_t length, uint32_t& src_addr, uint16_t& src_port);
+        void loopHandleConnectionStateRequest(uint8_t* buffer, uint16_t length);
+        void loopHandleDisconnectRequest(uint8_t* buffer, uint16_t length);
+        void loopHandleDescriptionRequest(uint8_t* buffer, uint16_t length);
+        void loopHandleDeviceConfigurationRequest(uint8_t* buffer, uint16_t length);
+        void loopHandleTunnelingRequest(uint8_t* buffer, uint16_t length);
+#endif
+#if KNX_SERVICE_FAMILY_CORE >= 2
+        void loopHandleSearchRequestExtended(uint8_t* buffer, uint16_t length);
+#endif
+        bool sendBytes(uint8_t* buffer, uint16_t length);
+        bool isSendLimitReached();
+        IpParameterObject& _ipParameters;
+        DataLinkLayerCallbacks* _dllcb;
+#ifdef KNX_TUNNELING
+    KnxIpTunnelConnection tunnels[KNX_TUNNELING];
+    uint8_t _lastChannelId = 0;
+#endif
+};
+#endif

components/knx/src/knx/ip_host_protocol_address_information.cpp

@@ -0,0 +1,48 @@
+#include "ip_host_protocol_address_information.h"
+#include "bits.h"
+#ifdef USE_IP
+IpHostProtocolAddressInformation::IpHostProtocolAddressInformation(uint8_t* data)
+    : _data(data)
+{}
+
+
+uint8_t IpHostProtocolAddressInformation::length() const
+{
+    return *_data;
+}
+
+void IpHostProtocolAddressInformation::length(uint8_t value)
+{
+    *_data = value;
+}
+
+HostProtocolCode IpHostProtocolAddressInformation::code() const
+{
+    return (HostProtocolCode)_data[1];
+}
+
+void IpHostProtocolAddressInformation::code(HostProtocolCode value)
+{
+    _data[1] = value;
+}
+
+uint32_t IpHostProtocolAddressInformation::ipAddress() const
+{
+    return getInt(_data + 2);
+}
+
+void IpHostProtocolAddressInformation::ipAddress(uint32_t value)
+{
+    pushInt(value, _data + 2);
+}
+
+uint16_t IpHostProtocolAddressInformation::ipPortNumber() const
+{
+    return getWord(_data + 6);
+}
+
+void IpHostProtocolAddressInformation::ipPortNumber(uint16_t value)
+{
+    pushWord(value, _data + 6);
+}
+#endif

components/knx/src/knx/ip_host_protocol_address_information.h

@@ -0,0 +1,33 @@
+#pragma once
+
+#include <cstdint>
+#include "config.h"
+
+enum HostProtocolCode : uint8_t
+{
+    IPV4_UDP = 1,
+    IPV4_TCP = 2
+};
+
+#ifdef USE_IP
+
+#define LEN_IPHPAI 8
+#define LEN_CRD 4
+
+class IpHostProtocolAddressInformation
+{
+    public:
+        IpHostProtocolAddressInformation(uint8_t* data);
+        uint8_t length() const;
+        void length(uint8_t value);
+        HostProtocolCode code() const;
+        void code(HostProtocolCode value);
+        uint32_t ipAddress() const;
+        void ipAddress(uint32_t value);
+        uint16_t ipPortNumber() const;
+        void ipPortNumber(uint16_t value);
+
+    private:
+        uint8_t* _data;
+};
+#endif

components/knx/src/knx/ip_parameter_object.cpp

@@ -0,0 +1,143 @@
+#include "ip_parameter_object.h"
+#ifdef USE_IP
+#include "device_object.h"
+#include "platform.h"
+#include "bits.h"
+#include "data_property.h"
+#include "callback_property.h"
+
+// 224.0.23.12
+#define DEFAULT_MULTICAST_ADDR ((uint32_t)0xE000170C)
+
+IpParameterObject::IpParameterObject(DeviceObject& deviceObject, Platform& platform): _deviceObject(deviceObject),
+    _platform(platform)
+{
+    Property* properties[] =
+    {
+        new DataProperty(PID_OBJECT_TYPE, false, PDT_UNSIGNED_INT, 1, ReadLv3 | WriteLv0, (uint16_t)OT_IP_PARAMETER),
+        new DataProperty(PID_PROJECT_INSTALLATION_ID, true, PDT_UNSIGNED_INT, 1, ReadLv3 | WriteLv3),
+        new CallbackProperty<IpParameterObject>(this, PID_KNX_INDIVIDUAL_ADDRESS, true, PDT_UNSIGNED_INT, 1, ReadLv3 | WriteLv3,
+                                                [](IpParameterObject * io, uint16_t start, uint8_t count, uint8_t* data) -> uint8_t
+        {
+            if (start == 0)
+            {
+                uint16_t currentNoOfElements = 1;
+                pushWord(currentNoOfElements, data);
+                return 1;
+            }
+            // TODO: get property of deviceobject and use it
+            pushWord(io->_deviceObject.individualAddress(), data);
+            return 1;
+        },
+        [](IpParameterObject * io, uint16_t start, uint8_t count, const uint8_t* data) -> uint8_t
+        {
+            io->_deviceObject.individualAddress(getWord(data));
+            return 1;
+        }),
+#ifdef KNX_TUNNELING
+        new DataProperty(PID_ADDITIONAL_INDIVIDUAL_ADDRESSES, true, PDT_UNSIGNED_INT, KNX_TUNNELING, ReadLv3 | WriteLv3),
+        new DataProperty(PID_CUSTOM_RESERVED_TUNNELS_CTRL, true, PDT_UNSIGNED_CHAR, KNX_TUNNELING, ReadLv3 | WriteLv3), // custom propertiy to control the stacks behaviour for reserverd tunnels, not in Spec (PID >= 200)
+        new DataProperty(PID_CUSTOM_RESERVED_TUNNELS_IP, true, PDT_UNSIGNED_LONG, KNX_TUNNELING, ReadLv3 | WriteLv3), // custom propertiy to control the stacks behaviour for reserverd tunnels, not in Spec (PID >= 200)
+#endif
+        new DataProperty(PID_CURRENT_IP_ASSIGNMENT_METHOD, false, PDT_UNSIGNED_CHAR, 0, ReadLv3 | WriteLv3),
+        new DataProperty(PID_IP_ASSIGNMENT_METHOD, true, PDT_UNSIGNED_CHAR, 1, ReadLv3 | WriteLv3),
+        new DataProperty(PID_IP_CAPABILITIES, true, PDT_BITSET8, 0, ReadLv3 | WriteLv1),    // must be set by application due to capabilities of the used ip stack
+        new CallbackProperty<IpParameterObject>(this, PID_CURRENT_IP_ADDRESS, false, PDT_UNSIGNED_LONG, 1, ReadLv3 | WriteLv0,
+                                                [](IpParameterObject * io, uint16_t start, uint8_t count, uint8_t* data) -> uint8_t
+        {
+            if (start == 0)
+            {
+                uint16_t currentNoOfElements = 1;
+                pushWord(currentNoOfElements, data);
+                return 1;
+            }
+
+            pushInt(htonl(io->_platform.currentIpAddress()), data);
+            return 1;
+        }),
+        new CallbackProperty<IpParameterObject>(this, PID_CURRENT_SUBNET_MASK, false, PDT_UNSIGNED_LONG, 1, ReadLv3 | WriteLv0,
+                                                [](IpParameterObject * io, uint16_t start, uint8_t count, uint8_t* data) -> uint8_t
+        {
+            if (start == 0)
+            {
+                uint16_t currentNoOfElements = 1;
+                pushWord(currentNoOfElements, data);
+                return 1;
+            }
+
+            pushInt(htonl(io->_platform.currentSubnetMask()), data);
+            return 1;
+        }),
+        new CallbackProperty<IpParameterObject>(this, PID_CURRENT_DEFAULT_GATEWAY, false, PDT_UNSIGNED_LONG, 1, ReadLv3 | WriteLv0,
+                                                [](IpParameterObject * io, uint16_t start, uint8_t count, uint8_t* data) -> uint8_t
+        {
+            if (start == 0)
+            {
+                uint16_t currentNoOfElements = 1;
+                pushWord(currentNoOfElements, data);
+                return 1;
+            }
+
+            pushInt(htonl(io->_platform.currentDefaultGateway()), data);
+            return 1;
+        }),
+        new DataProperty(PID_IP_ADDRESS, true, PDT_UNSIGNED_LONG, 1, ReadLv3 | WriteLv3),
+        new DataProperty(PID_SUBNET_MASK, true, PDT_UNSIGNED_LONG, 1, ReadLv3 | WriteLv3),
+        new DataProperty(PID_DEFAULT_GATEWAY, true, PDT_UNSIGNED_LONG, 1, ReadLv3 | WriteLv3),
+        new CallbackProperty<IpParameterObject>(this, PID_MAC_ADDRESS, false, PDT_GENERIC_06, 1, ReadLv3 | WriteLv0,
+                                                [](IpParameterObject * io, uint16_t start, uint8_t count, uint8_t* data) -> uint8_t
+        {
+            if (start == 0)
+            {
+                uint16_t currentNoOfElements = 1;
+                pushWord(currentNoOfElements, data);
+                return 1;
+            }
+
+            io->_platform.macAddress(data);
+            return 1;
+        }),
+        new CallbackProperty<IpParameterObject>(this, PID_SYSTEM_SETUP_MULTICAST_ADDRESS, false, PDT_UNSIGNED_LONG, 1, ReadLv3 | WriteLv0,
+                                                [](IpParameterObject * io, uint16_t start, uint8_t count, uint8_t* data) -> uint8_t
+        {
+            if (start == 0)
+            {
+                uint16_t currentNoOfElements = 1;
+                pushWord(currentNoOfElements, data);
+                return 1;
+            }
+
+            pushInt(DEFAULT_MULTICAST_ADDR, data);
+            return 1;
+        }),
+        new DataProperty(PID_ROUTING_MULTICAST_ADDRESS, true, PDT_UNSIGNED_LONG, 1, ReadLv3 | WriteLv3, DEFAULT_MULTICAST_ADDR),
+        new DataProperty(PID_TTL, true, PDT_UNSIGNED_CHAR, 1, ReadLv3 | WriteLv3, (uint8_t)16),
+        new CallbackProperty<IpParameterObject>(this, PID_KNXNETIP_DEVICE_CAPABILITIES, false, PDT_BITSET16, 1, ReadLv3 | WriteLv0,
+                                                [](IpParameterObject * io, uint16_t start, uint8_t count, uint8_t* data) -> uint8_t
+        {
+            if (start == 0)
+            {
+                uint16_t currentNoOfElements = 1;
+                pushWord(currentNoOfElements, data);
+                return 1;
+            }
+
+            pushWord(0x1, data);
+            return 1;
+        }),
+        new DataProperty(PID_FRIENDLY_NAME, true, PDT_UNSIGNED_CHAR, 30, ReadLv3 | WriteLv3)
+    };
+    initializeProperties(sizeof(properties), properties);
+}
+
+uint16_t* IpParameterObject::additionalIndivualAddresses(uint8_t& numAddresses)
+{
+#ifdef KNX_TUNNELING
+    numAddresses = KNX_TUNNELING;
+#else
+    numAddresses = 0;
+#endif
+    return (uint16_t*) propertyData(PID_ADDITIONAL_INDIVIDUAL_ADDRESSES);
+}
+
+#endif

components/knx/src/knx/ip_parameter_object.h

@@ -0,0 +1,20 @@
+#pragma once
+
+#include "config.h"
+#ifdef USE_IP
+#include "interface_object.h"
+#include "device_object.h"
+#include "platform.h"
+
+#define KNXIP_MULTICAST_PORT 3671
+
+class IpParameterObject : public InterfaceObject
+{
+    public:
+        IpParameterObject(DeviceObject& deviceObject, Platform& platform);
+        uint16_t* additionalIndivualAddresses(uint8_t& numAddresses);
+    private:
+        DeviceObject& _deviceObject;
+        Platform& _platform;
+};
+#endif

components/knx/src/knx/knx_ip_ch.cpp

@@ -0,0 +1,48 @@
+#include "knx_ip_ch.h"
+#ifdef USE_IP
+KnxIpCH::KnxIpCH(uint8_t* data) : _data(data)
+{}
+
+KnxIpCH::~KnxIpCH()
+{}
+
+uint8_t KnxIpCH::length() const
+{
+    return *_data;
+}
+
+void KnxIpCH::length(uint8_t value)
+{
+    *_data = value;
+}
+
+void KnxIpCH::channelId(uint8_t value)
+{
+    _data[1] = value;
+}
+
+uint8_t KnxIpCH::channelId() const
+{
+    return _data[1];
+}
+
+void KnxIpCH::sequenceCounter(uint8_t value)
+{
+    _data[2] = value;
+}
+
+uint8_t KnxIpCH::sequenceCounter() const
+{
+    return _data[2];
+}
+
+void KnxIpCH::status(uint8_t value)
+{
+    _data[3] = value;
+}
+
+uint8_t KnxIpCH::status() const
+{
+    return _data[3];
+}
+#endif

components/knx/src/knx/knx_ip_ch.h

@@ -0,0 +1,28 @@
+#pragma once
+
+#include <cstdint>
+#include "config.h"
+
+#ifdef USE_IP
+
+#define LEN_CH 4
+
+// Connection Header
+class KnxIpCH
+{
+    public:
+        KnxIpCH(uint8_t* data);
+        virtual ~KnxIpCH();
+        void channelId(uint8_t channelId);
+        uint8_t channelId() const;
+        void sequenceCounter(uint8_t sequenceCounter);
+        uint8_t sequenceCounter() const;
+        void status(uint8_t status);
+        uint8_t status() const;
+        void length(uint8_t value);
+        uint8_t length() const;
+
+    protected:
+        uint8_t* _data = 0;
+};
+#endif

components/knx/src/knx/knx_ip_config_dib.cpp

@@ -0,0 +1,95 @@
+#include "knx_ip_config_dib.h"
+
+#ifdef USE_IP
+KnxIpConfigDIB::KnxIpConfigDIB(uint8_t* data, bool isCurrent) : KnxIpDIB(data)
+{
+    _isCurrent = isCurrent;
+}
+
+uint32_t KnxIpConfigDIB::address()
+{
+    uint32_t addr = 0;
+    popInt(addr, _data + 2);
+    return addr;
+}
+
+void KnxIpConfigDIB::address(uint32_t addr)
+{
+    pushInt(addr, _data + 2);
+}
+
+uint32_t KnxIpConfigDIB::subnet()
+{
+    uint32_t addr = 0;
+    popInt(addr, _data + 6);
+    return addr;
+}
+
+void KnxIpConfigDIB::subnet(uint32_t addr)
+{
+    pushInt(addr, _data + 6);
+}
+
+uint32_t KnxIpConfigDIB::gateway()
+{
+    uint32_t addr = 0;
+    popInt(addr, _data + 10);
+    return addr;
+}
+
+void KnxIpConfigDIB::gateway(uint32_t addr)
+{
+    pushInt(addr, _data + 10);
+}
+
+uint32_t KnxIpConfigDIB::dhcp()
+{
+    if (!_isCurrent)
+        return 0;
+
+    uint32_t addr = 0;
+    popInt(addr, _data + 14);
+    return addr;
+}
+
+void KnxIpConfigDIB::dhcp(uint32_t addr)
+{
+    if (!_isCurrent)
+        return;
+
+    pushInt(addr, _data + 14);
+}
+
+uint8_t KnxIpConfigDIB::info1()
+{
+    if (_isCurrent)
+        return _data[14];
+    else
+        return _data[18];
+}
+
+void KnxIpConfigDIB::info1(uint8_t addr)
+{
+    if (_isCurrent)
+        _data[14] = addr;
+    else
+        _data[18] = addr;
+}
+
+uint8_t KnxIpConfigDIB::info2()
+{
+    if (_isCurrent)
+        return _data[15];
+    else
+        return _data[19];
+}
+
+void KnxIpConfigDIB::info2(uint8_t addr)
+{
+    if (_isCurrent)
+        _data[15] = addr;
+    else
+        _data[19] = addr;
+}
+
+#endif

components/knx/src/knx/knx_ip_config_dib.h

@@ -0,0 +1,28 @@
+#pragma once
+#include "knx_ip_dib.h"
+#include "bits.h"
+
+#ifdef USE_IP
+#define LEN_IP_CONFIG_DIB 16
+#define LEN_IP_CURRENT_CONFIG_DIB 20
+
+class KnxIpConfigDIB : public KnxIpDIB
+{
+    public:
+        KnxIpConfigDIB(uint8_t* data, bool isCurrent = false);
+        uint32_t address();
+        void address(uint32_t addr);
+        uint32_t subnet();
+        void subnet(uint32_t addr);
+        uint32_t gateway();
+        void gateway(uint32_t addr);
+        uint32_t dhcp();
+        void dhcp(uint32_t addr);
+        uint8_t info1();
+        void info1(uint8_t addr);
+        uint8_t info2();
+        void info2(uint8_t addr);
+    private:
+        bool _isCurrent = false;
+};
+#endif

components/knx/src/knx/knx_ip_config_request.cpp

@@ -0,0 +1,17 @@
+#include "knx_ip_config_request.h"
+#ifdef USE_IP
+KnxIpConfigRequest::KnxIpConfigRequest(uint8_t* data, uint16_t length)
+    : KnxIpFrame(data, length), _frame(data + LEN_KNXIP_HEADER + LEN_CH, length - LEN_KNXIP_HEADER - LEN_CH), _ch(data + LEN_KNXIP_HEADER)
+{
+}
+
+CemiFrame& KnxIpConfigRequest::frame()
+{
+    return _frame;
+}
+
+KnxIpCH& KnxIpConfigRequest::connectionHeader()
+{
+    return _ch;
+}
+#endif

components/knx/src/knx/knx_ip_config_request.h

@@ -0,0 +1,17 @@
+#pragma once
+
+#include "knx_ip_frame.h"
+#include "knx_ip_ch.h"
+#include "ip_host_protocol_address_information.h"
+#ifdef USE_IP
+class KnxIpConfigRequest : public KnxIpFrame
+{
+    public:
+        KnxIpConfigRequest(uint8_t* data, uint16_t length);
+        CemiFrame& frame();
+        KnxIpCH& connectionHeader();
+    private:
+        CemiFrame _frame;
+        KnxIpCH _ch;
+};
+#endif

components/knx/src/knx/knx_ip_connect_request.cpp

@@ -0,0 +1,21 @@
+#include "knx_ip_connect_request.h"
+#ifdef USE_IP
+KnxIpConnectRequest::KnxIpConnectRequest(uint8_t* data, uint16_t length)
+    : KnxIpFrame(data, length), _hpaiCtrl(data + LEN_KNXIP_HEADER), _hpaiData(data + LEN_KNXIP_HEADER + LEN_IPHPAI), _cri(data + LEN_KNXIP_HEADER + 2 * LEN_IPHPAI)
+{
+}
+
+
+IpHostProtocolAddressInformation& KnxIpConnectRequest::hpaiCtrl()
+{
+    return _hpaiCtrl;
+}
+IpHostProtocolAddressInformation& KnxIpConnectRequest::hpaiData()
+{
+    return _hpaiData;
+}
+KnxIpCRI& KnxIpConnectRequest::cri()
+{
+    return _cri;
+}
+#endif

components/knx/src/knx/knx_ip_connect_request.h

@@ -0,0 +1,19 @@
+#pragma once
+
+#include "knx_ip_frame.h"
+#include "knx_ip_cri.h"
+#include "ip_host_protocol_address_information.h"
+#ifdef USE_IP
+class KnxIpConnectRequest : public KnxIpFrame
+{
+    public:
+        KnxIpConnectRequest(uint8_t* data, uint16_t length);
+        IpHostProtocolAddressInformation& hpaiCtrl();
+        IpHostProtocolAddressInformation& hpaiData();
+        KnxIpCRI& cri();
+    private:
+        IpHostProtocolAddressInformation _hpaiCtrl;
+        IpHostProtocolAddressInformation _hpaiData;
+        KnxIpCRI _cri;
+};
+#endif

components/knx/src/knx/knx_ip_connect_response.cpp

@@ -0,0 +1,46 @@
+#include "knx_ip_connect_response.h"
+#ifdef USE_IP
+
+KnxIpConnectResponse::KnxIpConnectResponse(IpParameterObject& parameters, uint16_t address, uint16_t port, uint8_t channel, uint8_t type)
+    : KnxIpFrame(LEN_KNXIP_HEADER + 1 /*Channel*/ + 1 /*Status*/ + LEN_IPHPAI + ((type == 4) ? 4 : 2)),
+      _controlEndpoint(_data + LEN_KNXIP_HEADER + 1 /*Channel*/ + 1 /*Status*/),
+      _crd(_data + LEN_KNXIP_HEADER + 1 /*Channel*/ + 1 /*Status*/ + LEN_IPHPAI)
+{
+    serviceTypeIdentifier(ConnectResponse);
+
+    _data[LEN_KNXIP_HEADER] = channel;
+
+    _controlEndpoint.length(LEN_IPHPAI);
+    _controlEndpoint.code(IPV4_UDP);
+    _controlEndpoint.ipAddress(parameters.propertyValue<uint32_t>(PID_CURRENT_IP_ADDRESS));
+    _controlEndpoint.ipPortNumber(KNXIP_MULTICAST_PORT);
+
+    _crd.length((type == 4) ? 4 : 2); //TunnelConnectionResponse length = 4; ConfigConnectionResponse length = 2;
+    _crd.type(type);
+    if(type == 4) // only fill address when it is a TunnelConnectionResponse
+        _crd.address(address);
+}
+
+KnxIpConnectResponse::KnxIpConnectResponse(uint8_t channel, uint8_t errorCode)
+    : KnxIpFrame(LEN_KNXIP_HEADER + 1 /*Channel*/ + 1 /*Status*/),
+      _controlEndpoint(nullptr),
+      _crd(nullptr)
+{
+    serviceTypeIdentifier(ConnectResponse);
+
+    _data[LEN_KNXIP_HEADER] = channel;
+    _data[LEN_KNXIP_HEADER + 1] = errorCode;
+}
+
+
+IpHostProtocolAddressInformation& KnxIpConnectResponse::controlEndpoint()
+{
+    return _controlEndpoint;
+}
+
+KnxIpCRD& KnxIpConnectResponse::crd()
+{
+    return _crd;
+}
+
+#endif

components/knx/src/knx/knx_ip_connect_response.h

@@ -0,0 +1,45 @@
+#pragma once
+
+#include "knx_ip_frame.h"
+#include "knx_ip_crd.h"
+#include "ip_host_protocol_address_information.h"
+#include "knx_ip_device_information_dib.h"
+#include "knx_ip_supported_service_dib.h"
+#include "ip_parameter_object.h"
+#ifdef USE_IP
+
+enum KnxIpConnectionRequestErrorCodes
+{
+    E_NO_ERROR = 0,
+
+    E_HOST_PROTOCOL_TYPE = 0x01,
+    E_VERSION_NOT_SUPPORTED = 0x02,
+    E_SEQUENCE_NUMBER = 0x04,
+
+    E_ERROR = 0x0F,
+
+    E_CONNECTION_ID = 0x21,
+    E_CONNECTION_TYPE = 0x22,
+    E_CONNECTION_OPTION = 0x23,
+    E_NO_MORE_CONNECTIONS = 0x24,
+    E_DATA_CONNECTION = 0x26,
+    E_KNX_CONNECTION = 0x27,
+    E_AUTHORISATION_ERROR = 0x28,
+    E_TUNNELING_LAYER = 0x29,
+    E_NO_TUNNELLING_ADDRESS = 0x2D,
+    E_CONNECTION_IN_USE = 0x2E
+};
+
+class KnxIpConnectResponse : public KnxIpFrame
+{
+    public:
+        KnxIpConnectResponse(IpParameterObject& parameters, uint16_t address, uint16_t port, uint8_t channel, uint8_t type);
+        KnxIpConnectResponse(uint8_t channel, uint8_t errorCode);
+        IpHostProtocolAddressInformation& controlEndpoint();
+        KnxIpCRD& crd();
+    private:
+        IpHostProtocolAddressInformation _controlEndpoint;
+        KnxIpCRD _crd;
+};
+
+#endif

components/knx/src/knx/knx_ip_crd.cpp

@@ -0,0 +1,41 @@
+#include "knx_ip_crd.h"
+#ifdef USE_IP
+KnxIpCRD::KnxIpCRD(uint8_t* data) : _data(data)
+{}
+
+KnxIpCRD::~KnxIpCRD()
+{}
+
+uint8_t KnxIpCRD::length() const
+{
+    return *_data;
+}
+
+void KnxIpCRD::length(uint8_t value)
+{
+    *_data = value;
+}
+
+uint8_t KnxIpCRD::type() const
+{
+    return _data[1];
+}
+
+void KnxIpCRD::type(uint8_t value)
+{
+    _data[1] = value;
+}
+
+uint16_t KnxIpCRD::address() const
+{
+    uint16_t addr = _data[3];
+    addr |= _data[2] << 8;
+    return addr;
+}
+
+void KnxIpCRD::address(uint16_t value)
+{
+    _data[2] = value >> 8;
+    _data[3] = value & 0xFF;
+}
+#endif

components/knx/src/knx/knx_ip_crd.h

@@ -0,0 +1,23 @@
+#pragma once
+
+#include <cstdint>
+#include "config.h"
+
+#ifdef USE_IP
+
+class KnxIpCRD
+{
+    public:
+        KnxIpCRD(uint8_t* data);
+        virtual ~KnxIpCRD();
+        void address(uint16_t addr);
+        uint16_t address() const;
+        void type(uint8_t addr);
+        uint8_t type() const;
+        uint8_t length() const;
+        void length(uint8_t value);
+
+    protected:
+        uint8_t* _data = 0;
+};
+#endif

components/knx/src/knx/knx_ip_cri.cpp

@@ -0,0 +1,38 @@
+#include "knx_ip_cri.h"
+#ifdef USE_IP
+KnxIpCRI::KnxIpCRI(uint8_t* data) : _data(data)
+{}
+
+KnxIpCRI::~KnxIpCRI()
+{}
+
+uint8_t KnxIpCRI::length() const
+{
+    return *_data;
+}
+
+void KnxIpCRI::length(uint8_t value)
+{
+    *_data = value;
+}
+
+ConnectionType KnxIpCRI::type() const
+{
+    return (ConnectionType)_data[1];
+}
+
+void KnxIpCRI::type(ConnectionType value)
+{
+    _data[1] = value;
+}
+
+uint8_t KnxIpCRI::layer() const
+{
+    return _data[2];
+}
+
+void KnxIpCRI::layer(uint8_t value)
+{
+    _data[2] = value;
+}
+#endif

components/knx/src/knx/knx_ip_cri.h

@@ -0,0 +1,36 @@
+#pragma once
+
+#include <cstdint>
+#include "config.h"
+
+#ifdef USE_IP
+
+#define LEN_CRI 4
+
+//TODO vervollständigen
+enum ConnectionType : uint8_t
+{
+    DEVICE_MGMT_CONNECTION = 3,
+    TUNNEL_CONNECTION = 4,
+    REMLOG_CONNECTION = 6,
+    REMCONF_CONNECTION = 7,
+    OBJSVR_CONNECTION = 8
+};
+
+// Connection Request Information
+class KnxIpCRI
+{
+    public:
+        KnxIpCRI(uint8_t* data);
+        virtual ~KnxIpCRI();
+        ConnectionType type() const;
+        void type(ConnectionType value);
+        void layer(uint8_t layer);
+        uint8_t layer() const;
+        uint8_t length() const;
+        void length(uint8_t value);
+
+    protected:
+        uint8_t* _data = 0;
+};
+#endif

components/knx/src/knx/knx_ip_description_request.cpp

@@ -0,0 +1,13 @@
+#include "knx_ip_description_request.h"
+#ifdef USE_IP
+KnxIpDescriptionRequest::KnxIpDescriptionRequest(uint8_t* data, uint16_t length)
+    : KnxIpFrame(data, length), _hpaiCtrl(data + LEN_KNXIP_HEADER)
+{
+}
+
+
+IpHostProtocolAddressInformation& KnxIpDescriptionRequest::hpaiCtrl()
+{
+    return _hpaiCtrl;
+}
+#endif

components/knx/src/knx/knx_ip_description_request.h

@@ -0,0 +1,15 @@
+#pragma once
+
+#include "knx_ip_frame.h"
+#include "knx_ip_cri.h"
+#include "ip_host_protocol_address_information.h"
+#ifdef USE_IP
+class KnxIpDescriptionRequest : public KnxIpFrame
+{
+    public:
+        KnxIpDescriptionRequest(uint8_t* data, uint16_t length);
+        IpHostProtocolAddressInformation& hpaiCtrl();
+    private:
+        IpHostProtocolAddressInformation _hpaiCtrl;
+};
+#endif

components/knx/src/knx/knx_ip_description_response.cpp

@@ -0,0 +1,72 @@
+#include "knx_ip_description_response.h"
+#ifdef USE_IP
+
+#define LEN_SERVICE_FAMILIES 2
+#if MASK_VERSION == 0x091A
+    #ifdef KNX_TUNNELING
+        #define LEN_SERVICE_DIB (2 + 4 * LEN_SERVICE_FAMILIES)
+    #else
+        #define LEN_SERVICE_DIB (2 + 3 * LEN_SERVICE_FAMILIES)
+    #endif
+#else
+    #ifdef KNX_TUNNELING
+        #define LEN_SERVICE_DIB (2 + 3 * LEN_SERVICE_FAMILIES)
+    #else
+        #define LEN_SERVICE_DIB (2 + 2 * LEN_SERVICE_FAMILIES)
+    #endif
+#endif
+
+KnxIpDescriptionResponse::KnxIpDescriptionResponse(IpParameterObject& parameters, DeviceObject& deviceObject)
+    : KnxIpFrame(LEN_KNXIP_HEADER + LEN_DEVICE_INFORMATION_DIB + LEN_SERVICE_DIB),
+      _deviceInfo(_data + LEN_KNXIP_HEADER),
+      _supportedServices(_data + LEN_KNXIP_HEADER + LEN_DEVICE_INFORMATION_DIB)
+{
+    serviceTypeIdentifier(DescriptionResponse);
+
+    _deviceInfo.length(LEN_DEVICE_INFORMATION_DIB);
+    _deviceInfo.code(DEVICE_INFO);
+#if MASK_VERSION == 0x57B0
+    _deviceInfo.medium(0x20); //MediumType is IP (for IP-Only Devices)
+#else
+    _deviceInfo.medium(0x02); //MediumType is TP
+#endif
+    _deviceInfo.status(deviceObject.progMode());
+    _deviceInfo.individualAddress(parameters.propertyValue<uint16_t>(PID_KNX_INDIVIDUAL_ADDRESS));
+    _deviceInfo.projectInstallationIdentifier(parameters.propertyValue<uint16_t>(PID_PROJECT_INSTALLATION_ID));
+    _deviceInfo.serialNumber(deviceObject.propertyData(PID_SERIAL_NUMBER));
+    _deviceInfo.routingMulticastAddress(parameters.propertyValue<uint32_t>(PID_ROUTING_MULTICAST_ADDRESS));
+    //_deviceInfo.routingMulticastAddress(0);
+
+    uint8_t mac_address[LEN_MAC_ADDRESS] = {0};
+    Property* prop = parameters.property(PID_MAC_ADDRESS);
+    prop->read(mac_address);
+    _deviceInfo.macAddress(mac_address);
+
+    uint8_t friendlyName[LEN_FRIENDLY_NAME] = {0};
+    prop = parameters.property(PID_FRIENDLY_NAME);
+    prop->read(1, LEN_FRIENDLY_NAME, friendlyName);
+    _deviceInfo.friendlyName(friendlyName);
+
+    _supportedServices.length(LEN_SERVICE_DIB);
+    _supportedServices.code(SUPP_SVC_FAMILIES);
+    _supportedServices.serviceVersion(Core, 1);
+    _supportedServices.serviceVersion(DeviceManagement, 1);
+#ifdef KNX_TUNNELING
+    _supportedServices.serviceVersion(Tunnelling, 1);
+#endif
+#if MASK_VERSION == 0x091A
+    _supportedServices.serviceVersion(Routing, 1);
+#endif
+}
+
+KnxIpDeviceInformationDIB& KnxIpDescriptionResponse::deviceInfo()
+{
+    return _deviceInfo;
+}
+
+
+KnxIpSupportedServiceDIB& KnxIpDescriptionResponse::supportedServices()
+{
+    return _supportedServices;
+}
+#endif

components/knx/src/knx/knx_ip_description_response.h

@@ -0,0 +1,21 @@
+#pragma once
+
+#include "knx_ip_frame.h"
+#include "ip_host_protocol_address_information.h"
+#include "knx_ip_device_information_dib.h"
+#include "knx_ip_supported_service_dib.h"
+#include "ip_parameter_object.h"
+#ifdef USE_IP
+
+class KnxIpDescriptionResponse : public KnxIpFrame
+{
+    public:
+        KnxIpDescriptionResponse(IpParameterObject& parameters, DeviceObject& deviceObj);
+        KnxIpDeviceInformationDIB& deviceInfo();
+        KnxIpSupportedServiceDIB& supportedServices();
+    private:
+        KnxIpDeviceInformationDIB _deviceInfo;
+        KnxIpSupportedServiceDIB _supportedServices;
+};
+
+#endif

components/knx/src/knx/knx_ip_device_information_dib.cpp

@@ -0,0 +1,102 @@
+#include "knx_ip_device_information_dib.h"
+#include "bits.h"
+
+#ifdef USE_IP
+KnxIpDeviceInformationDIB::KnxIpDeviceInformationDIB(uint8_t* data) : KnxIpDIB(data)
+{}
+
+uint8_t KnxIpDeviceInformationDIB::medium() const
+{
+    return _data[2];
+}
+
+
+void KnxIpDeviceInformationDIB::medium(uint8_t value)
+{
+    _data[2] = value;
+}
+
+
+uint8_t KnxIpDeviceInformationDIB::status() const
+{
+    return _data[3];
+}
+
+
+void KnxIpDeviceInformationDIB::status(uint8_t value)
+{
+    _data[3] = value;
+}
+
+
+uint16_t KnxIpDeviceInformationDIB::individualAddress() const
+{
+    return getWord(_data + 4);
+}
+
+
+void KnxIpDeviceInformationDIB::individualAddress(uint16_t value)
+{
+    pushWord(value, _data + 4);
+}
+
+
+uint16_t KnxIpDeviceInformationDIB::projectInstallationIdentifier() const
+{
+    return getWord(_data + 6);
+}
+
+
+void KnxIpDeviceInformationDIB::projectInstallationIdentifier(uint16_t value)
+{
+    pushWord(value, _data + 6);
+}
+
+
+const uint8_t* KnxIpDeviceInformationDIB::serialNumber() const
+{
+    return _data + 8;
+}
+
+
+void KnxIpDeviceInformationDIB::serialNumber(const uint8_t* value)
+{
+    pushByteArray(value, LEN_SERIAL_NUMBER, _data + 8);
+}
+
+
+uint32_t KnxIpDeviceInformationDIB::routingMulticastAddress() const
+{
+    return getInt(_data + 14);
+}
+
+
+void KnxIpDeviceInformationDIB::routingMulticastAddress(uint32_t value)
+{
+    pushInt(value, _data + 14);
+}
+
+
+const uint8_t* KnxIpDeviceInformationDIB::macAddress() const
+{
+    return _data + 18;
+}
+
+
+void KnxIpDeviceInformationDIB::macAddress(const uint8_t* value)
+{
+    pushByteArray(value, LEN_MAC_ADDRESS, _data + 18);
+}
+
+
+const uint8_t* KnxIpDeviceInformationDIB::friendlyName() const
+{
+    return _data + 24;
+}
+
+
+void KnxIpDeviceInformationDIB::friendlyName(const uint8_t* value)
+{
+    pushByteArray(value, LEN_FRIENDLY_NAME, _data + 24);
+}
+#endif

components/knx/src/knx/knx_ip_device_information_dib.h

@@ -0,0 +1,32 @@
+#pragma once
+#include "knx_ip_dib.h"
+
+#ifdef USE_IP
+#define LEN_DEVICE_INFORMATION_DIB 54
+#define LEN_SERIAL_NUMBER 6
+#define LEN_MAC_ADDRESS 6
+#define LEN_FRIENDLY_NAME 30
+
+class KnxIpDeviceInformationDIB : public KnxIpDIB
+{
+    public:
+        KnxIpDeviceInformationDIB(uint8_t* data);
+        uint8_t medium() const;
+        void medium(uint8_t value);
+        uint8_t status() const;
+        void status(uint8_t value);
+        uint16_t individualAddress() const;
+        void individualAddress(uint16_t value);
+        uint16_t projectInstallationIdentifier() const;
+        void projectInstallationIdentifier(uint16_t value);
+        const uint8_t* serialNumber() const;
+        void serialNumber(const uint8_t* value);
+        uint32_t routingMulticastAddress() const;
+        void routingMulticastAddress(uint32_t value);
+        const uint8_t* macAddress() const;
+        void macAddress(const uint8_t* value);
+        const uint8_t* friendlyName() const;
+        void friendlyName(const uint8_t* value);
+};
+
+#endif

components/knx/src/knx/knx_ip_dib.cpp

@@ -0,0 +1,28 @@
+#include "knx_ip_dib.h"
+#ifdef USE_IP
+KnxIpDIB::KnxIpDIB(uint8_t* data) : _data(data)
+{}
+
+KnxIpDIB::~KnxIpDIB()
+{}
+
+uint8_t KnxIpDIB::length() const
+{
+    return *_data;
+}
+
+void KnxIpDIB::length(uint8_t value)
+{
+    *_data = value;
+}
+
+DescriptionTypeCode KnxIpDIB::code() const
+{
+    return (DescriptionTypeCode)_data[1];
+}
+
+void KnxIpDIB::code(DescriptionTypeCode value)
+{
+    _data[1] = value;
+}
+#endif