- refactor data-link layer

- add dummy tp-uart dl
- add bau07b0 (copy of bau57B0; refactoring needed)

bau07B0.cpp

@@ -0,0 +1,303 @@
+#include "bau07B0.h"
+#include <string.h>
+#include <stdio.h>
+
+
+using namespace std;
+
+Bau07B0::Bau07B0(Platform& platform): _memoryReference((uint8_t*)&_deviceObj), _memory(platform), _addrTable(_memoryReference),
+    _assocTable(_memoryReference), _groupObjTable(_memoryReference), _appProgram(_memoryReference),
+    _platform(platform), _appLayer(_assocTable, *this),
+    _transLayer(_appLayer, _addrTable, _platform), _netLayer(_transLayer),
+    _dlLayer(_deviceObj, _addrTable, _netLayer, _platform)
+{
+    _appLayer.transportLayer(_transLayer);
+    _transLayer.networkLayer(_netLayer);
+    _netLayer.dataLinkLayer(_dlLayer);
+    _memory.addSaveRestore(&_deviceObj);
+    _memory.addSaveRestore(&_appProgram);
+    _memory.addSaveRestore(&_addrTable);
+    _memory.addSaveRestore(&_assocTable);
+    _memory.addSaveRestore(&_groupObjTable);
+}
+
+void Bau07B0::loop()
+{
+    _dlLayer.loop();
+    _transLayer.loop();
+    sendNextGroupTelegram();
+}
+
+void Bau07B0::sendNextGroupTelegram()
+{
+    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(!go.communicationEnable() || ! go.transmitEnable())
+            continue;
+
+        if (flag == WriteRequest)
+        {
+            uint8_t* data = go.valueRef();
+            _appLayer.groupValueWriteRequest(AckRequested, asap, go.priority(), NetworkLayerParameter, data,
+                go.sizeInTelegram());
+        }
+        else
+        {
+            _appLayer.groupValueReadRequest(AckRequested, asap, go.priority(), NetworkLayerParameter);
+        }
+
+        go.commFlag(Transmitting);
+
+        startIdx = asap + 1;
+        return;
+    }
+
+    startIdx = 1;
+}
+
+void Bau07B0::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);
+
+    go.commFlag(cfUpdate);
+    if (go.updateHandler)
+        go.updateHandler(go);
+}
+
+void Bau07B0::readMemory()
+{
+    _memory.readMemory();
+}
+
+DeviceObject& Bau07B0::deviceObject()
+{
+    return _deviceObj;
+}
+
+GroupObjectTableObject& Bau07B0::groupObjectTable()
+{
+    return _groupObjTable;
+}
+
+ApplicationProgramObject& Bau07B0::parameters()
+{
+    return _appProgram;
+}
+
+bool Bau07B0::configured()
+{
+    return _groupObjTable.loadState() == LS_LOADED
+        && _addrTable.loadState() == LS_LOADED
+        && _assocTable.loadState() == LS_LOADED
+        && _appProgram.loadState() == LS_LOADED;
+}
+
+bool Bau07B0::enabled()
+{
+    return _dlLayer.enabled();
+}
+
+void Bau07B0::enabled(bool value)
+{
+    _dlLayer.enabled(value);
+}
+
+void Bau07B0::memoryWriteIndication(Priority priority, HopCountType hopType, uint16_t asap, uint8_t number,
+    uint16_t memoryAddress, uint8_t * data)
+{
+    memcpy(_memoryReference + memoryAddress, data, number);
+    _memory.memoryModified();
+
+    if (_deviceObj.verifyMode())
+        memoryReadIndication(priority, hopType, asap, number, memoryAddress);
+}
+
+void Bau07B0::memoryReadIndication(Priority priority, HopCountType hopType, uint16_t asap, uint8_t number,
+    uint16_t memoryAddress)
+{
+    _appLayer.memoryReadResponse(AckRequested, priority, hopType, asap, number, memoryAddress,
+        _memoryReference + memoryAddress);
+}
+
+void Bau07B0::deviceDescriptorReadIndication(Priority priority, HopCountType hopType, uint16_t asap, uint8_t descriptorType)
+{
+    if (descriptorType != 0)
+        descriptorType = 0x3f;
+
+    uint8_t descriptor[] = { 0x07, 0xb0 };
+
+    _appLayer.deviceDescriptorReadResponse(AckRequested, priority, hopType, asap, descriptorType, descriptor);
+}
+
+void Bau07B0::restartRequestIndication(Priority priority, HopCountType hopType, uint16_t asap)
+{
+    // for platforms that don't really restart
+    _deviceObj.progMode(false);
+
+    // Flush the EEPROM before resetting
+    _memory.writeMemory();
+    _platform.restart();
+}
+
+void Bau07B0::authorizeIndication(Priority priority, HopCountType hopType, uint16_t asap, uint32_t key)
+{
+    _appLayer.authorizeResponse(AckRequested, priority, hopType, asap, 0);
+}
+
+void Bau07B0::userMemoryReadIndication(Priority priority, HopCountType hopType, uint16_t asap, uint8_t number, uint32_t memoryAddress)
+{
+    _appLayer.userMemoryReadResponse(AckRequested, priority, hopType, asap, number, memoryAddress,
+        _memoryReference + memoryAddress);
+}
+
+void Bau07B0::userMemoryWriteIndication(Priority priority, HopCountType hopType, uint16_t asap, uint8_t number, uint32_t memoryAddress, uint8_t* data)
+{
+    memcpy(_memoryReference + memoryAddress, data, number);
+    _memory.memoryModified();
+
+    if (_deviceObj.verifyMode())
+        userMemoryReadIndication(priority, hopType, asap, number, memoryAddress);
+}
+
+void Bau07B0::propertyDescriptionReadIndication(Priority priority, HopCountType hopType, uint16_t asap, 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);
+
+    _appLayer.propertyDescriptionReadResponse(AckRequested, priority, hopType, asap, objectIndex, pid, propertyIndex,
+        writeEnable, type, numberOfElements, access);
+}
+
+void Bau07B0::propertyValueWriteIndication(Priority priority, HopCountType hopType, uint16_t asap, 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, objectIndex, propertyId, numberOfElements, startIndex);
+}
+
+void Bau07B0::propertyValueReadIndication(Priority priority, HopCountType hopType, uint16_t asap, uint8_t objectIndex,
+    uint8_t propertyId, uint8_t numberOfElements, uint16_t startIndex)
+{
+    uint8_t size = 0;
+    uint32_t elementCount = numberOfElements;
+    InterfaceObject* obj = getInterfaceObject(objectIndex);
+    if (obj)
+    {
+        uint8_t elementSize = obj->propertySize((PropertyID)propertyId);
+        size = elementSize * numberOfElements;
+    }
+    else
+        elementCount = 0;
+
+    uint8_t data[size];
+    if(obj)
+        obj->readProperty((PropertyID)propertyId, startIndex, elementCount, data);
+    _appLayer.propertyValueReadResponse(AckRequested, priority, hopType, asap, objectIndex, propertyId, elementCount,
+        startIndex, data, size);
+}
+
+void Bau07B0::individualAddressReadIndication(HopCountType hopType)
+{
+    if (_deviceObj.progMode())
+        _appLayer.individualAddressReadResponse(AckRequested, hopType);
+}
+
+void Bau07B0::individualAddressWriteIndication(HopCountType hopType, uint16_t newaddress)
+{
+    if (_deviceObj.progMode())
+        _deviceObj.induvidualAddress(newaddress);
+}
+
+void Bau07B0::groupValueWriteLocalConfirm(AckType ack, uint16_t asap, Priority priority, HopCountType hopType, uint8_t * data, uint8_t dataLength, bool status)
+{
+    GroupObject& go = _groupObjTable.get(asap);
+    if (status)
+        go.commFlag(Ok);
+    else
+        go.commFlag(Error);
+}
+
+void Bau07B0::groupValueReadLocalConfirm(AckType ack, uint16_t asap, Priority priority, HopCountType hopType, bool status)
+{
+    GroupObject& go = _groupObjTable.get(asap);
+    if (status)
+        go.commFlag(Ok);
+    else
+        go.commFlag(Error);
+}
+
+void Bau07B0::groupValueReadIndication(uint16_t asap, Priority priority, HopCountType hopType)
+{
+    GroupObject& go = _groupObjTable.get(asap);
+    uint8_t* data = go.valueRef();
+    _appLayer.groupValueReadResponse(AckRequested, asap, priority, hopType, data, go.sizeInTelegram());
+}
+
+void Bau07B0::groupValueReadAppLayerConfirm(uint16_t asap, Priority priority, HopCountType hopType, uint8_t* data,
+    uint8_t dataLength)
+{
+    GroupObject& go = _groupObjTable.get(asap);
+
+    if (!go.communicationEnable() || !go.responseUpdateEnable())
+        return;
+
+    updateGroupObject(go, data, dataLength);
+}
+
+void Bau07B0::groupValueWriteIndication(uint16_t asap, Priority priority, HopCountType hopType, uint8_t * data, uint8_t dataLength)
+{
+    GroupObject& go = _groupObjTable.get(asap);
+
+    if (!go.communicationEnable() || !go.writeEnable())
+        return;
+
+    updateGroupObject(go, data, dataLength);
+}
+
+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;
+    default:
+        return nullptr;
+    }
+}

bau07B0.h

@@ -0,0 +1,75 @@
+#pragma once
+
+#include "bau.h"
+#include "device_object.h"
+#include "address_table_object.h"
+#include "association_table_object.h"
+#include "group_object_table_object.h"
+#include "application_program_object.h"
+#include "application_layer.h"
+#include "transport_layer.h"
+#include "network_layer.h"
+#include "tpuart_data_link_layer.h"
+#include "platform.h"
+#include "memory.h"
+
+class Bau07B0: protected BusAccessUnit
+{
+    using BusAccessUnit::memoryReadIndication;
+public:
+    Bau07B0(Platform& platform);
+    void loop();
+    DeviceObject& deviceObject();
+    GroupObjectTableObject& groupObjectTable();
+    ApplicationProgramObject& parameters();
+    bool configured();
+    bool enabled();
+    void enabled(bool value);
+    void readMemory();
+protected:
+    void memoryWriteIndication(Priority priority, HopCountType hopType, uint16_t asap, uint8_t number,
+        uint16_t memoryAddress, uint8_t* data) override;
+    void memoryReadIndication(Priority priority, HopCountType hopType, uint16_t asap, uint8_t number,
+        uint16_t memoryAddress) override;
+    void deviceDescriptorReadIndication(Priority priority, HopCountType hopType, uint16_t asap, uint8_t descriptorType);
+    void restartRequestIndication(Priority priority, HopCountType hopType, uint16_t asap);
+    void authorizeIndication(Priority priority, HopCountType hopType, uint16_t asap, uint32_t key);
+    void userMemoryReadIndication(Priority priority, HopCountType hopType, uint16_t asap, uint8_t number, uint32_t memoryAddress);
+    void userMemoryWriteIndication(Priority priority, HopCountType hopType, uint16_t asap, uint8_t number, 
+        uint32_t memoryAddress, uint8_t* memoryData);
+    void propertyDescriptionReadIndication(Priority priority, HopCountType hopType, uint16_t asap, uint8_t objectIndex, 
+        uint8_t propertyId, uint8_t propertyIndex);
+    void propertyValueWriteIndication(Priority priority, HopCountType hopType, uint16_t asap, uint8_t objectIndex, 
+        uint8_t propertyId, uint8_t numberOfElements, uint16_t startIndex, uint8_t* data, uint8_t length);
+    void propertyValueReadIndication(Priority priority, HopCountType hopType, uint16_t asap, uint8_t objectIndex, 
+        uint8_t propertyId, uint8_t numberOfElements, uint16_t startIndex);
+    void individualAddressReadIndication(HopCountType hopType);
+    void individualAddressWriteIndication(HopCountType hopType, uint16_t newaddress);
+    void groupValueWriteLocalConfirm(AckType ack, uint16_t asap, Priority priority, HopCountType hopType,
+        uint8_t* data, uint8_t dataLength, bool status);
+    void groupValueReadLocalConfirm(AckType ack, uint16_t asap, Priority priority, HopCountType hopType, bool status);
+    void groupValueReadIndication(uint16_t asap, Priority priority, HopCountType hopType);
+    void groupValueReadAppLayerConfirm(uint16_t asap, Priority priority, HopCountType hopType,
+        uint8_t* data, uint8_t dataLength);
+    void groupValueWriteIndication(uint16_t asap, Priority priority, HopCountType hopType,
+        uint8_t* data, uint8_t dataLength);
+    
+    InterfaceObject* getInterfaceObject(uint8_t idx);
+    void sendNextGroupTelegram();
+    void updateGroupObject(GroupObject& go, uint8_t* data, uint8_t length);
+private:
+    DeviceObject _deviceObj;
+    // pointer to first private variable as reference to memory read/write commands
+    uint8_t* _memoryReference;
+    Memory _memory;
+    AddressTableObject _addrTable;
+    AssociationTableObject _assocTable;
+    GroupObjectTableObject _groupObjTable;
+    ApplicationProgramObject _appProgram;
+    Platform& _platform;
+    ApplicationLayer _appLayer;
+    TransportLayer _transLayer;
+    NetworkLayer _netLayer;
+    TpUartDataLinkLayer _dlLayer;
+
+};

bau57B0.h

@@ -10,7 +10,7 @@
 #include "application_layer.h"
 #include "transport_layer.h"
 #include "network_layer.h"
-#include "data_link_layer.h"
+#include "ip_data_link_layer.h"
 #include "platform.h"
 #include "memory.h"
 
@@ -72,6 +72,6 @@ private:
     ApplicationLayer _appLayer;
     TransportLayer _transLayer;
     NetworkLayer _netLayer;
-    DataLinkLayer _dlLayer;
+    IpDataLinkLayer _dlLayer;
 
 };

bits.h

@@ -16,7 +16,8 @@
                    ((x)>> 8 & 0x0000FF00UL) | \
                    ((x)>>24 & 0x000000FFUL) )
 #define ntohl(x) htonl(x)
-#define printf 
+#define println SerialUSB.println
+#define print SerialUSB.print
 #else
 #include <Arduino.h>
 #include <user_interface.h>

data_link_layer.cpp

@@ -1,128 +1,31 @@
-/*
- *  bus.cpp - Low level EIB bus access.
- *
- *  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 "data_link_layer.h"
 
 #include "bits.h"
 #include "platform.h"
 #include "device_object.h"
 #include "address_table_object.h"
-#include "cemi_frame.h"
 
-#include <stdio.h>
-#include <string.h>
 
-#define KNXIP_HEADER_LEN 0x6
-#define KNXIP_PROTOCOL_VERSION 0x10
-
-#define ROUTING_INDICATION 0x0530
-
-#define KNXIP_MULTICAST_PORT 3671
-#define MIN_LEN_CEMI 10
-
-#ifdef DUMP_TELEGRAMS
-unsigned char telBuffer[32];
-uint32_t telLength = 0;
-#endif
-
-DataLinkLayer::DataLinkLayer(DeviceObject& devObj, AddressTableObject& addrTab, IpParameterObject& ipParam, 
+DataLinkLayer::DataLinkLayer(DeviceObject& devObj, AddressTableObject& addrTab, 
     NetworkLayer& layer, Platform& platform) :
-    _deviceObject(devObj), _groupAddressTable(addrTab), _ipParameters(ipParam), _networkLayer(layer), _platform(platform)
+    _deviceObject(devObj), _groupAddressTable(addrTab),  _networkLayer(layer), _platform(platform)
 {
 }
 
 void DataLinkLayer::dataRequest(AckType ack, AddressType addrType, uint16_t destinationAddr, FrameFormat format, Priority priority, NPDU& npdu)
 {
-    bool success = sendPacket(npdu, ack, destinationAddr, addrType, format, priority);
+    bool success = sendTelegram(npdu, ack, destinationAddr, addrType, format, priority);
     _networkLayer.dataConfirm(ack, addrType, destinationAddr, format, priority, npdu.frame().sourceAddress(), npdu, success);
 }
 
 void DataLinkLayer::systemBroadcastRequest(AckType ack, FrameFormat format, Priority priority, NPDU& npdu)
 {
-    bool success = sendPacket(npdu, ack, 0, GroupAddress, format, priority);
+    bool success = sendTelegram(npdu, ack, 0, GroupAddress, format, priority);
     _networkLayer.systemBroadcastConfirm(ack, format, priority, npdu.frame().sourceAddress(), npdu, success);
 }
 
-bool DataLinkLayer::sendPacket(NPDU &npdu, AckType ack, uint16_t destinationAddr, AddressType addrType, FrameFormat format, Priority priority)
+void DataLinkLayer::frameRecieved(CemiFrame & frame)
 {
-    CemiFrame& frame = npdu.frame();
-    frame.messageCode(L_data_ind);
-    frame.destinationAddress(destinationAddr);
-    frame.sourceAddress(_deviceObject.induvidualAddress());
-    frame.addressType(addrType);
-    frame.priority(priority);
-    frame.repetition(RepititionAllowed);
-
-    if (npdu.octetCount() <= 15)
-        frame.frameType(StandardFrame);
-    else
-        frame.frameType(format);
-
-
-    if (!frame.valid())
-    {
-        printf("invalid frame\n");
-        return false;
-    }
-
-
-    //if (frame.npdu().octetCount() > 0)
-    //{
-    //    print.print("-> DLL ");
-    //    frame.apdu().printPDU();
-    //}
-
-
-    uint16_t length = frame.totalLenght() + KNXIP_HEADER_LEN;
-    uint8_t* buffer = new uint8_t[length];
-    buffer[0] = KNXIP_HEADER_LEN;
-    buffer[1] = KNXIP_PROTOCOL_VERSION;
-    pushWord(ROUTING_INDICATION, buffer + 2);
-    pushWord(length, buffer + 4);
-
-    memcpy(buffer + KNXIP_HEADER_LEN, frame._data, frame.totalLenght());
-    
-    bool success = sendBytes(buffer, length);
-    // only send 50 packet per second: see KNX 3.2.6 p.6
-    _platform.mdelay(20);
-    delete[] buffer;
-    return success;
-}
-
-void DataLinkLayer::loop()
-{
-    if (!_enabled)
-        return;
-
-    uint8_t buffer[512];
-    int len = _platform.readBytes(buffer, 512);
-    if (len <= 0)
-        return;
-
-    if (len < KNXIP_HEADER_LEN)
-        return;
-    
-    if (buffer[0] != KNXIP_HEADER_LEN 
-        || buffer[1] != KNXIP_PROTOCOL_VERSION)
-        return;
-
-    uint16_t code;
-    popWord(code, buffer + 2);
-    if (code != ROUTING_INDICATION) // only routing indication for now
-        return;
-    
-    if (len < MIN_LEN_CEMI)
-        return;
-
-    //TODO: Check correct length (additions Info + apdu length)
-    CemiFrame frame(buffer + KNXIP_HEADER_LEN, len - KNXIP_HEADER_LEN);
     AckType ack = frame.ack();
     AddressType addrType = frame.addressType();
     uint16_t destination = frame.destinationAddress();
@@ -134,7 +37,7 @@ void DataLinkLayer::loop()
 
     if (source == ownAddr)
         _deviceObject.induvidualAddressDuplication(true);
-    
+
     if (addrType == GroupAddress && destination == 0)
         _networkLayer.systemBroadcastIndication(ack, type, npdu, priority, source);
     else
@@ -155,45 +58,38 @@ void DataLinkLayer::loop()
     }
 }
 
-void DataLinkLayer::enabled(bool value)
+bool DataLinkLayer::sendTelegram(NPDU & npdu, AckType ack, uint16_t destinationAddr, AddressType addrType, FrameFormat format, Priority priority)
 {
-    if (value && !_enabled)
+    CemiFrame& frame = npdu.frame();
+    frame.messageCode(L_data_ind);
+    frame.destinationAddress(destinationAddr);
+    frame.sourceAddress(_deviceObject.induvidualAddress());
+    frame.addressType(addrType);
+    frame.priority(priority);
+    frame.repetition(RepititionAllowed);
+
+    if (npdu.octetCount() <= 15)
+        frame.frameType(StandardFrame);
+    else
+        frame.frameType(format);
+
+
+    if (!frame.valid())
     {
-        _platform.setupMultiCast(_ipParameters.multicastAddress(), KNXIP_MULTICAST_PORT);
-        _enabled = true;
-        return;
-    }
-
-    if(!value && _enabled)
-    {
-        _platform.closeMultiCast();
-        _enabled = false;
-        return;
-    }
-}
-
-bool DataLinkLayer::enabled() const
-{
-    return _enabled;
-}
-
-
-bool DataLinkLayer::sendBytes(uint8_t* bytes, uint16_t length)
-{
-    if (!_enabled)
+        println("invalid frame\n");
         return false;
-
-#ifdef DUMP_TELEGRAMS_
-    {
-        print.print("QSD: ");
-        for (uint32_t i = 0; i <= length; ++i)
-        {
-            if (i) print.print(" ");
-            print.print(bytes[i], HEX, 2);
-        }
-        print.println();
     }
-#endif
 
-    return _platform.sendBytes(bytes, length);
-}
+    //if (frame.npdu().octetCount() > 0)
+    //{
+    //    print.print("-> DLL ");
+    //    frame.apdu().printPDU();
+    //}
+
+    return sendFrame(frame);
+}
+
+uint8_t* DataLinkLayer::frameData(CemiFrame& frame)
+{
+    return frame._data;
+}

data_link_layer.h

@@ -3,31 +3,29 @@
 #include <stdint.h>
 #include "device_object.h"
 #include "address_table_object.h"
-#include "ip_parameter_object.h"
 #include "knx_types.h"
 #include "network_layer.h"
 
 class DataLinkLayer
 {
 public:
-    DataLinkLayer(DeviceObject& devObj, AddressTableObject& addrTab, IpParameterObject& ipParam, NetworkLayer& layer, 
+    DataLinkLayer(DeviceObject& devObj, AddressTableObject& addrTab, NetworkLayer& layer, 
         Platform& platform);
 
     // from network layer
     void dataRequest(AckType ack, AddressType addrType, uint16_t destinationAddr, FrameFormat format, 
         Priority priority, NPDU& npdu);
     void systemBroadcastRequest(AckType ack, FrameFormat format, Priority priority, NPDU& npdu);
-    void loop();
-    void enabled(bool value);
-    bool enabled() const;
-private:
-    bool _enabled = false;
-    bool sendPacket(NPDU &npdu, AckType ack, uint16_t destinationAddr, AddressType addrType, FrameFormat format, Priority priority);
-    bool sendBytes(uint8_t* buffer, uint16_t length);
-
+    virtual void loop() = 0;
+    virtual void enabled(bool value) = 0;
+    virtual bool enabled() const = 0;
+protected:
+    void frameRecieved(CemiFrame& frame);
+    bool sendTelegram(NPDU &npdu, AckType ack, uint16_t destinationAddr, AddressType addrType, FrameFormat format, Priority priority);
+    virtual bool sendFrame(CemiFrame& frame) = 0;
+    uint8_t* frameData(CemiFrame& frame);
     DeviceObject& _deviceObject;
     AddressTableObject& _groupAddressTable;
-    IpParameterObject& _ipParameters;
     NetworkLayer& _networkLayer;
     Platform& _platform;
 };

ip_data_link_layer.cpp

@@ -0,0 +1,102 @@
+#include "ip_data_link_layer.h"
+
+#include "bits.h"
+#include "platform.h"
+#include "device_object.h"
+#include "address_table_object.h"
+#include "cemi_frame.h"
+
+#include <stdio.h>
+#include <string.h>
+
+#define KNXIP_HEADER_LEN 0x6
+#define KNXIP_PROTOCOL_VERSION 0x10
+
+#define ROUTING_INDICATION 0x0530
+
+#define KNXIP_MULTICAST_PORT 3671
+#define MIN_LEN_CEMI 10
+
+IpDataLinkLayer::IpDataLinkLayer(DeviceObject& devObj, AddressTableObject& addrTab, IpParameterObject& ipParam, 
+    NetworkLayer& layer, Platform& platform) : DataLinkLayer(devObj, addrTab, layer, platform), _ipParameters(ipParam)
+{
+}
+
+bool IpDataLinkLayer::sendFrame(CemiFrame& frame)
+{
+    uint16_t length = frame.totalLenght() + KNXIP_HEADER_LEN;
+    uint8_t* buffer = new uint8_t[length];
+    buffer[0] = KNXIP_HEADER_LEN;
+    buffer[1] = KNXIP_PROTOCOL_VERSION;
+    pushWord(ROUTING_INDICATION, buffer + 2);
+    pushWord(length, buffer + 4);
+
+    memcpy(buffer + KNXIP_HEADER_LEN, frameData(frame), frame.totalLenght());
+    
+    bool success = sendBytes(buffer, length);
+    // only send 50 packet per second: see KNX 3.2.6 p.6
+    _platform.mdelay(20);
+    delete[] buffer;
+    return success;
+}
+
+void IpDataLinkLayer::loop()
+{
+    if (!_enabled)
+        return;
+
+    uint8_t buffer[512];
+    int len = _platform.readBytes(buffer, 512);
+    if (len <= 0)
+        return;
+
+    if (len < KNXIP_HEADER_LEN)
+        return;
+    
+    if (buffer[0] != KNXIP_HEADER_LEN 
+        || buffer[1] != KNXIP_PROTOCOL_VERSION)
+        return;
+
+    uint16_t code;
+    popWord(code, buffer + 2);
+    if (code != ROUTING_INDICATION) // only routing indication for now
+        return;
+    
+    if (len < MIN_LEN_CEMI)
+        return;
+
+    //TODO: Check correct length (additions Info + apdu length)
+    CemiFrame frame(buffer + KNXIP_HEADER_LEN, len - KNXIP_HEADER_LEN);
+    frameRecieved(frame);
+}
+
+void IpDataLinkLayer::enabled(bool value)
+{
+    if (value && !_enabled)
+    {
+        _platform.setupMultiCast(_ipParameters.multicastAddress(), KNXIP_MULTICAST_PORT);
+        _enabled = true;
+        return;
+    }
+
+    if(!value && _enabled)
+    {
+        _platform.closeMultiCast();
+        _enabled = false;
+        return;
+    }
+}
+
+bool IpDataLinkLayer::enabled() const
+{
+    return _enabled;
+}
+
+
+bool IpDataLinkLayer::sendBytes(uint8_t* bytes, uint16_t length)
+{
+    if (!_enabled)
+        return false;
+
+    return _platform.sendBytes(bytes, length);
+}

ip_data_link_layer.h

@@ -0,0 +1,23 @@
+#pragma once
+
+#include <stdint.h>
+#include "data_link_layer.h"
+#include "ip_parameter_object.h"
+
+class IpDataLinkLayer: public DataLinkLayer
+{
+    using DataLinkLayer::_deviceObject;
+public:
+    IpDataLinkLayer(DeviceObject& devObj, AddressTableObject& addrTab, IpParameterObject& ipParam, NetworkLayer& layer, 
+        Platform& platform);
+
+    void loop();
+    void enabled(bool value);
+    bool enabled() const;
+private:
+    bool _enabled = false;
+    bool sendFrame(CemiFrame& frame);
+    bool sendBytes(uint8_t* buffer, uint16_t length);
+
+    IpParameterObject& _ipParameters;
+};

tpuart_data_link_layer.cpp

@@ -0,0 +1,74 @@
+#include "tpuart_data_link_layer.h"
+
+#include "bits.h"
+#include "platform.h"
+#include "device_object.h"
+#include "address_table_object.h"
+#include "cemi_frame.h"
+
+#include <stdio.h>
+#include <string.h>
+
+TpUartDataLinkLayer::TpUartDataLinkLayer(DeviceObject& devObj, AddressTableObject& addrTab,
+    NetworkLayer& layer, Platform& platform) : DataLinkLayer(devObj, addrTab, layer, platform)
+{
+}
+
+
+bool TpUartDataLinkLayer::sendFrame(CemiFrame& frame)
+{
+    uint16_t length = frame.totalLenght();
+    uint8_t* buffer = new uint8_t[length];
+
+    //TODO: Create TP standard frame or extended frame from cemi frame into buffer
+    
+    bool success = sendBytes(buffer, length);
+
+    delete[] buffer;
+    return success;
+}
+
+void TpUartDataLinkLayer::loop()
+{
+    if (!_enabled)
+        return;
+
+    uint8_t buffer[512];
+    int len = 0;
+    // TODO: implement receiving of frames
+
+    CemiFrame frame(buffer, len);
+    frameRecieved(frame);
+}
+
+void TpUartDataLinkLayer::enabled(bool value)
+{
+    if (value && !_enabled)
+    {
+        //TODO: implement setup of Serial + TPUART
+        _enabled = true;
+        return;
+    }
+
+    if(!value && _enabled)
+    {
+        //TODO: implement disable of TPUART
+        _enabled = false;
+        return;
+    }
+}
+
+bool TpUartDataLinkLayer::enabled() const
+{
+    return _enabled;
+}
+
+
+bool TpUartDataLinkLayer::sendBytes(uint8_t* bytes, uint16_t length)
+{
+    if (!_enabled)
+        return false;
+
+    //TODO: implement
+    return false;
+}

tpuart_data_link_layer.h

@@ -0,0 +1,20 @@
+#pragma once
+
+#include <stdint.h>
+#include "data_link_layer.h"
+
+class TpUartDataLinkLayer: public DataLinkLayer
+{
+    using DataLinkLayer::_deviceObject;
+public:
+    TpUartDataLinkLayer(DeviceObject& devObj, AddressTableObject& addrTab, NetworkLayer& layer,
+        Platform& platform);
+
+    void loop();
+    void enabled(bool value);
+    bool enabled() const;
+private:
+    bool _enabled = false;
+    bool sendFrame(CemiFrame& frame);
+    bool sendBytes(uint8_t* buffer, uint16_t length);
+};