application_layer.cpp

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#include "application_layer.h"
#include "transport_layer.h"
#include "cemi_frame.h"
#include "association_table_object.h"
#include "apdu.h"
#include "bau.h"
#include "string.h"
#include "bits.h"
#include <stdio.h>
 
const SecurityControl ApplicationLayer::noSecurity {.toolAccess = false, .dataSecurity = DataSecurity::None};
 
ApplicationLayer::ApplicationLayer(BusAccessUnit& bau) : _bau(bau)
{
}
 
void ApplicationLayer::transportLayer(TransportLayer& layer)
{
    _transportLayer = &layer;
}
 
void ApplicationLayer::associationTableObject(AssociationTableObject& assocTable)
{
    _assocTable = &assocTable;
}
 
#pragma region TL Callbacks
 
void ApplicationLayer::dataGroupIndication(HopCountType hopType, Priority priority, uint16_t tsap, APDU& apdu)
{
    dataGroupIndication(hopType, priority, tsap, apdu, noSecurity);
}
 
void ApplicationLayer::dataGroupIndication(HopCountType hopType, Priority priority, uint16_t tsap, APDU& apdu, const SecurityControl& secCtrl)
{
    if (_assocTable == nullptr)
        return;
 
    uint8_t len = apdu.length();
    uint8_t dataArray[len];
    uint8_t* data = dataArray;
    memcpy(data, apdu.data(), len);
 
    if (len == 1)
    {
        //less than six bit are encoded in first byte
        *data &= 0x3f;
    }
    else
    {
        data += 1;
        len -= 1;
    }
 
    uint16_t startIdx = 0;
    int32_t asap = _assocTable->nextAsap(tsap, startIdx);
 
    for (; asap != -1; asap = _assocTable->nextAsap(tsap, startIdx))
    {
        switch (apdu.type())
        {
            case GroupValueRead:
                _bau.groupValueReadIndication(asap, priority, hopType, secCtrl);
                break;
 
            case GroupValueResponse:
                _bau.groupValueReadAppLayerConfirm(asap, priority, hopType, secCtrl, data, len);
                break;
 
            case GroupValueWrite:
                _bau.groupValueWriteIndication(asap, priority, hopType, secCtrl, data, len);
 
            default:
                /* other apdutypes are not valid here. If they appear do nothing */
                break;
        }
    }
}
 
void ApplicationLayer::dataGroupConfirm(AckType ack, HopCountType hopType, Priority priority, uint16_t tsap, APDU& apdu, bool status)
{
    dataGroupConfirm(ack, hopType, priority, tsap, apdu, noSecurity, status);
}
 
void ApplicationLayer::dataGroupConfirm(AckType ack, HopCountType hopType, Priority priority,  uint16_t tsap, APDU& apdu, const SecurityControl& secCtrl, bool status)
{
    switch (apdu.type())
    {
        case GroupValueRead:
            if (_savedAsapReadRequest > 0)
                _bau.groupValueReadLocalConfirm(ack, _savedAsapReadRequest, priority, hopType, secCtrl, status);
 
            _savedAsapReadRequest = 0;
            break;
 
        case GroupValueResponse:
            if (_savedAsapResponse > 0)
                _bau.groupValueReadResponseConfirm(ack, _savedAsapResponse, priority, hopType, secCtrl, apdu.data(), apdu.length() - 1, status);
 
            _savedAsapResponse = 0;
            break;
 
        case GroupValueWrite:
            if (_savedAsapWriteRequest > 0)
                _bau.groupValueWriteLocalConfirm(ack, _savedAsapWriteRequest, priority, hopType, secCtrl, apdu.data(), apdu.length() - 1, status);
 
            _savedAsapWriteRequest = 0;
            break;
 
        default:
            print("datagroup-confirm: unhandled APDU-Type: ");
            println(apdu.type());
    }
}
 
void ApplicationLayer::dataBroadcastIndication(HopCountType hopType, Priority priority, uint16_t source, APDU& apdu)
{
    dataBroadcastIndication(hopType, priority, source, apdu, noSecurity);
}
 
void ApplicationLayer::dataBroadcastIndication(HopCountType hopType, Priority priority, uint16_t source, APDU& apdu, const SecurityControl& secCtrl)
{
    uint8_t* data = apdu.data();
 
    switch (apdu.type())
    {
        case IndividualAddressWrite:
        {
            uint16_t newAddress;
            popWord(newAddress, data + 1);
            _bau.individualAddressWriteIndication(hopType, secCtrl, newAddress);
            break;
        }
 
        case IndividualAddressRead:
            _bau.individualAddressReadIndication(hopType, secCtrl);
            break;
 
        case IndividualAddressResponse:
            _bau.individualAddressReadAppLayerConfirm(hopType, secCtrl, apdu.frame().sourceAddress());
            break;
 
        case IndividualAddressSerialNumberRead:
        {
            uint8_t* knxSerialNumber = &data[1];
            _bau.individualAddressSerialNumberReadIndication(priority, hopType, secCtrl, knxSerialNumber);
            break;
        }
 
        case IndividualAddressSerialNumberResponse:
        {
            uint16_t domainAddress;
            popWord(domainAddress, data + 7);
            _bau.individualAddressSerialNumberReadAppLayerConfirm(hopType, secCtrl, data + 1, apdu.frame().sourceAddress(),
                    domainAddress);
            break;
        }
 
        case IndividualAddressSerialNumberWrite:
        {
            uint8_t* knxSerialNumber = &data[1];
            uint16_t newIndividualAddress;
            popWord(newIndividualAddress, &data[7]);
            _bau.individualAddressSerialNumberWriteIndication(priority, hopType, secCtrl, newIndividualAddress, knxSerialNumber);
            break;
        }
 
        default:
            print("Broadcast-indication: unhandled APDU-Type: ");
            println(apdu.type());
            break;
    }
}
 
void ApplicationLayer::dataBroadcastConfirm(AckType ack, HopCountType hopType, Priority priority, APDU& apdu, bool status)
{
    dataBroadcastConfirm(ack, hopType, priority, apdu, noSecurity, status);
}
 
void ApplicationLayer::dataBroadcastConfirm(AckType ack, HopCountType hopType, Priority priority, APDU& apdu, const SecurityControl& secCtrl, bool status)
{
    uint8_t* data = apdu.data();
 
    switch (apdu.type())
    {
        case IndividualAddressWrite:
        {
            uint16_t newAddress;
            popWord(newAddress, data + 1);
            _bau.individualAddressWriteLocalConfirm(ack, hopType, secCtrl, newAddress, status);
            break;
        }
 
        case IndividualAddressRead:
            _bau.individualAddressReadLocalConfirm(ack, hopType, secCtrl, status);
            break;
 
        case IndividualAddressResponse:
            _bau.individualAddressReadResponseConfirm(ack, hopType, secCtrl, status);
            break;
 
        case IndividualAddressSerialNumberRead:
            _bau.individualAddressSerialNumberReadLocalConfirm(ack, hopType, secCtrl, data + 1, status);
            break;
 
        case IndividualAddressSerialNumberResponse:
        {
            uint16_t domainAddress;
            popWord(domainAddress, data + 7);
            _bau.individualAddressSerialNumberReadResponseConfirm(ack, hopType, secCtrl, data + 1, domainAddress, status);
            break;
        }
 
        case IndividualAddressSerialNumberWrite:
        {
            uint16_t newAddress;
            popWord(newAddress, data + 7);
            _bau.individualAddressSerialNumberWriteLocalConfirm(ack, hopType, secCtrl, data + 1, newAddress, status);
            break;
        }
 
        default:
            print("Broadcast-confirm: unhandled APDU-Type: ");
            println(apdu.type());
            break;
    }
}
 
void ApplicationLayer::dataSystemBroadcastIndication(HopCountType hopType, Priority priority, uint16_t source, APDU& apdu)
{
    dataSystemBroadcastIndication(hopType, priority, source, apdu, noSecurity);
}
 
void ApplicationLayer::dataSystemBroadcastIndication(HopCountType hopType, Priority priority, uint16_t source, APDU& apdu, const SecurityControl& secCtrl)
{
    const uint8_t* data = apdu.data();
 
    switch (apdu.type())
    {
        // TODO: testInfo could be of any length
        case SystemNetworkParameterRead:
        {
            uint16_t objectType;
            uint16_t propertyId;
            uint8_t testInfo[2];
            popWord(objectType, data + 1);
            popWord(propertyId, data + 3);
            popByte(testInfo[0], data + 4);
            popByte(testInfo[1], data + 5);
            propertyId = (propertyId >> 4) & 0x0FFF;
            testInfo[0] &= 0x0F;
            _bau.systemNetworkParameterReadIndication(priority, hopType, secCtrl, objectType, propertyId, testInfo, sizeof(testInfo));
            break;
        }
 
        case DomainAddressSerialNumberWrite:
        {
            const uint8_t* knxSerialNumber = &data[1];
            const uint8_t* domainAddress = &data[7];
            _bau.domainAddressSerialNumberWriteIndication(priority, hopType, secCtrl, domainAddress, knxSerialNumber);
            break;
        }
 
        case DomainAddressSerialNumberRead:
        {
            const uint8_t* knxSerialNumber = &data[1];
            _bau.domainAddressSerialNumberReadIndication(priority, hopType, secCtrl, knxSerialNumber);
            break;
        }
 
        default:
            print("SystemBroadcast-indication: unhandled APDU-Type: ");
            println(apdu.type());
            break;
    }
}
 
void ApplicationLayer::dataSystemBroadcastConfirm(HopCountType hopType, Priority priority, APDU& apdu, bool status)
{
    dataSystemBroadcastConfirm(hopType, priority, apdu, noSecurity, status);
}
 
void ApplicationLayer::dataSystemBroadcastConfirm(HopCountType hopType, Priority priority, APDU& apdu, const SecurityControl& secCtrl, bool status)
{
    const uint8_t* data = apdu.data();
 
    switch (apdu.type())
    {
        // TODO: testInfo could be of any length
        case SystemNetworkParameterRead:
        {
            uint16_t objectType;
            uint16_t propertyId;
            uint8_t testInfo[2];
            popWord(objectType, data + 1);
            popWord(propertyId, data + 3);
            popByte(testInfo[0], data + 4);
            popByte(testInfo[1], data + 5);
            propertyId = (propertyId >> 4) & 0x0FFF;
            testInfo[0] &= 0x0F;
            _bau.systemNetworkParameterReadLocalConfirm(priority, hopType, secCtrl, objectType, propertyId, testInfo, sizeof(testInfo), status);
            break;
        }
 
        case DomainAddressSerialNumberWrite:
        {
            const uint8_t* knxSerialNumber = &data[1];
            const uint8_t* domainAddress = &data[7];
            _bau.domainAddressSerialNumberWriteLocalConfirm(priority, hopType, secCtrl, domainAddress, knxSerialNumber, status);
            break;
        }
 
        case DomainAddressSerialNumberRead:
        {
            const uint8_t* knxSerialNumber = &data[1];
            _bau.domainAddressSerialNumberReadLocalConfirm(priority, hopType, secCtrl, knxSerialNumber, status);
            break;
        }
 
        default:
            print("SystemBroadcast-confirm: unhandled APDU-Type: ");
            println(apdu.type());
            break;
    }
}
 
void ApplicationLayer::dataIndividualIndication(HopCountType hopType, Priority priority, uint16_t source, APDU& apdu)
{
    dataIndividualIndication(hopType, priority, source, apdu, noSecurity);
}
 
void ApplicationLayer::dataIndividualIndication(HopCountType hopType, Priority priority, uint16_t tsap, APDU& apdu, const SecurityControl& secCtrl)
{
    individualIndication(hopType, priority, tsap, apdu, secCtrl);
}
 
void ApplicationLayer::dataIndividualConfirm(AckType ack, HopCountType hopType, Priority priority, uint16_t tsap, APDU& apdu, bool status)
{
    dataIndividualConfirm(ack, hopType, priority, tsap, apdu, noSecurity, status);
}
 
void ApplicationLayer::dataIndividualConfirm(AckType ack, HopCountType hopType, Priority priority, uint16_t tsap, APDU& apdu, const SecurityControl& secCtrl, bool status)
{
    individualConfirm(ack, hopType, priority, tsap, apdu, secCtrl, status);
}
 
void ApplicationLayer::connectIndication(uint16_t tsap)
{
    _connectedTsap = tsap;
}
 
void ApplicationLayer::connectConfirm(uint16_t destination, uint16_t tsap, bool status)
{
    if (status)
    {
        _connectedTsap = tsap;
        _bau.connectConfirm(tsap);
    }
    else
        _connectedTsap = -1;
}
 
void ApplicationLayer::disconnectIndication(uint16_t tsap)
{
    _connectedTsap = -1;
}
 
void ApplicationLayer::disconnectConfirm(Priority priority, uint16_t tsap, bool status)
{
    _connectedTsap = -1;
}
 
void ApplicationLayer::dataConnectedIndication(Priority priority, uint16_t tsap, APDU& apdu)
{
    dataConnectedIndication(priority, tsap, apdu, noSecurity);
}
 
void ApplicationLayer::dataConnectedIndication(Priority priority, uint16_t tsap, APDU& apdu, const SecurityControl& secCtrl)
{
    individualIndication(NetworkLayerParameter, priority, tsap, apdu, secCtrl);
}
 
void ApplicationLayer::dataConnectedConfirm(uint16_t tsap)
{
    dataConnectedConfirm(tsap, noSecurity);
}
 
void ApplicationLayer::dataConnectedConfirm(uint16_t tsap, const SecurityControl& secCtrl)
{
    //FIXME: implement dataConnectedConfirm DataSecurity
}
#pragma endregion
void ApplicationLayer::groupValueReadRequest(AckType ack, uint16_t asap, Priority priority, HopCountType hopType, const SecurityControl& secCtrl)
{
    if (_assocTable == nullptr)
        return;
 
    _savedAsapReadRequest = asap;
    CemiFrame frame(1);
    APDU& apdu = frame.apdu();
    apdu.type(GroupValueRead);
 
    int32_t value = _assocTable->translateAsap(asap);
 
    if (value < 0)
        return; // there is no tsap in association table for this asap
 
    uint16_t tsap = (uint16_t)value;
 
    // first to bus then to itself
    dataGroupRequest(ack, hopType, priority, tsap, apdu, secCtrl);
    dataGroupIndication(hopType, priority, tsap, apdu, secCtrl);
}
 
void ApplicationLayer::groupValueReadResponse(AckType ack, uint16_t asap, Priority priority, HopCountType hopType, const SecurityControl& secCtrl, uint8_t* data, uint8_t dataLength)
{
    _savedAsapResponse = asap;
    groupValueSend(GroupValueResponse, ack, asap, priority, hopType, secCtrl, data, dataLength);
}
 
void ApplicationLayer::groupValueWriteRequest(AckType ack, uint16_t asap, Priority priority, HopCountType hopType, const SecurityControl& secCtrl, uint8_t* data, uint8_t dataLength)
{
    _savedAsapWriteRequest = asap;
    groupValueSend(GroupValueWrite, ack, asap, priority, hopType, secCtrl, data, dataLength);
}
 
void ApplicationLayer::individualAddressWriteRequest(AckType ack, HopCountType hopType, const SecurityControl& secCtrl, uint16_t newaddress)
{
    CemiFrame frame(3);
    APDU& apdu = frame.apdu();
    apdu.type(IndividualAddressWrite);
    uint8_t* apduData = apdu.data();
    pushWord(newaddress, apduData + 1);
    dataBroadcastRequest(ack, hopType, SystemPriority, apdu, secCtrl);
}
 
void ApplicationLayer::individualAddressReadRequest(AckType ack, HopCountType hopType, const SecurityControl& secCtrl)
{
    CemiFrame frame(1);
    APDU& apdu = frame.apdu();
    apdu.type(IndividualAddressRead);
    dataBroadcastRequest(ack, hopType, SystemPriority, apdu, secCtrl);
}
 
void ApplicationLayer::individualAddressReadResponse(AckType ack, HopCountType hopType, const SecurityControl& secCtrl)
{
    CemiFrame frame(1);
    APDU& apdu = frame.apdu();
    apdu.type(IndividualAddressResponse);
    dataBroadcastRequest(ack, hopType, SystemPriority, apdu, secCtrl);
}
 
void ApplicationLayer::individualAddressSerialNumberReadRequest(AckType ack, HopCountType hopType, const SecurityControl& secCtrl, uint8_t* serialNumber)
{
    CemiFrame frame(7);
    APDU& apdu = frame.apdu();
    apdu.type(IndividualAddressSerialNumberRead);
    uint8_t* data = apdu.data() + 1;
    memcpy(data, serialNumber, 6);
    dataBroadcastRequest(ack, hopType, SystemPriority, apdu, secCtrl);
}
 
void ApplicationLayer::individualAddressSerialNumberReadResponse(AckType ack, HopCountType hopType, const SecurityControl& secCtrl,
        uint8_t* serialNumber, uint16_t domainAddress)
{
    CemiFrame frame(7);
    APDU& apdu = frame.apdu();
    apdu.type(IndividualAddressSerialNumberResponse);
    uint8_t* data = apdu.data() + 1;
    memcpy(data, serialNumber, 6);
    data += 6;
    pushWord(domainAddress, data);
    dataBroadcastRequest(ack, hopType, SystemPriority, apdu, secCtrl);
}
 
void ApplicationLayer::individualAddressSerialNumberWriteRequest(AckType ack, HopCountType hopType, const SecurityControl& secCtrl, uint8_t* serialNumber,
        uint16_t newaddress)
{
    CemiFrame frame(13);
    APDU& apdu = frame.apdu();
    apdu.type(IndividualAddressSerialNumberWrite);
    uint8_t* data = apdu.data() + 1;
    memcpy(data, serialNumber, 6);
    data += 6;
    pushWord(newaddress, data);
    dataBroadcastRequest(ack, hopType, SystemPriority, apdu, secCtrl);
}
 
void ApplicationLayer::deviceDescriptorReadRequest(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl,
        uint8_t descriptorType)
{
    CemiFrame frame(1);
    APDU& apdu = frame.apdu();
    apdu.type(DeviceDescriptorRead);
    uint8_t* data = apdu.data();
    *data |= (descriptorType & 0x3f);
 
    individualSend(ack, hopType, priority, asap, apdu, secCtrl);
}
 
void ApplicationLayer::deviceDescriptorReadResponse(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl,
        uint8_t descriptorType, uint8_t* deviceDescriptor)
{
    uint8_t length = 0;
 
    switch (descriptorType)
    {
        case 0:
            length = 3;
            break;
 
        case 2:
            length = 14;
            break;
 
        default:
            length = 1;
            descriptorType = 0x3f;
            break;
    }
 
    CemiFrame frame(length);
    APDU& apdu = frame.apdu();
    apdu.type(DeviceDescriptorResponse);
    uint8_t* data = apdu.data();
    *data |= (descriptorType & 0x3f);
 
    if (length > 1)
        memcpy(data + 1, deviceDescriptor, length - 1);
 
    individualSend(ack, hopType, priority, asap, apdu, secCtrl);
}
 
void ApplicationLayer::connectRequest(uint16_t destination, Priority priority)
{
    _transportLayer->connectRequest(destination, priority);
}
 
void ApplicationLayer::disconnectRequest(Priority priority)
{
    _transportLayer->disconnectRequest(_connectedTsap, priority);
}
 
void ApplicationLayer::restartRequest(AckType ack, Priority priority, HopCountType hopType, const SecurityControl& secCtrl)
{
    CemiFrame frame(1);
    APDU& apdu = frame.apdu();
    apdu.type(Restart);
 
    individualSend(ack, hopType, priority, _connectedTsap, apdu, secCtrl);
}
 
void ApplicationLayer::restartResponse(AckType ack, Priority priority, HopCountType hopType, const SecurityControl& secCtrl, uint8_t errorCode, uint16_t processTime)
{
    CemiFrame frame(4);
    APDU& apdu = frame.apdu();
    apdu.type(Restart);
    uint8_t* data = apdu.data();
    data[0] |= (1 << 5) | 1; // Set response bit and a restart type of "master reset". Only the master reset sends a response.
    data[1] = errorCode;
    data[2] = processTime >> 8;
    data[3] = processTime & 0xFF;
 
    individualSend(ack, hopType, priority, _connectedTsap, apdu, secCtrl);
}
 
//TODO: ApplicationLayer::systemNetworkParameterReadRequest()
void ApplicationLayer::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)
{
    CemiFrame frame(testInfoLength + testResultLength + 3 + 1); // PID and testInfo share an octet (+3) and +1 for APCI byte(?)
    APDU& apdu = frame.apdu();
    apdu.type(SystemNetworkParameterResponse);
    uint8_t* data = apdu.data() + 1;
 
    pushWord(objectType, data);
    pushWord((propertyId << 4) & 0xFFF0, data + 2);                             // Reserved bits for test_info are always 0
    uint8_t* pData = pushByteArray(&testInfo[1], testInfoLength - 1, data + 4); // TODO: upper reserved bits (testInfo + 0) have to put into the lower bits of data + 3
    memcpy(pData, testResult, testResultLength);
 
    //apdu.printPDU();
 
    dataSystemBroadcastRequest(AckDontCare, hopType, SystemPriority, apdu, secCtrl);
}
 
//TODO: ApplicationLayer::domainAddressSerialNumberWriteRequest()
//TODO: ApplicationLayer::domainAddressSerialNumberReadRequest()
void ApplicationLayer::domainAddressSerialNumberReadResponse(Priority priority, HopCountType hopType, const SecurityControl& secCtrl, const uint8_t* rfDoA,
        const uint8_t* knxSerialNumber)
{
    CemiFrame frame(13);
    APDU& apdu = frame.apdu();
    apdu.type(DomainAddressSerialNumberResponse);
 
    uint8_t* data = apdu.data() + 1;
 
    memcpy(data, knxSerialNumber, 6);
    memcpy(data + 6, rfDoA, 6);
 
    //apdu.printPDU();
 
    dataSystemBroadcastRequest(AckDontCare, hopType, SystemPriority, apdu, secCtrl);
}
 
//TODO: ApplicationLayer::IndividualAddressSerialNumberWriteRequest()
//TODO: ApplicationLayer::IndividualAddressSerialNumberReadRequest()
void ApplicationLayer::IndividualAddressSerialNumberReadResponse(Priority priority, HopCountType hopType, const SecurityControl& secCtrl, const uint8_t* domainAddress,
        const uint8_t* knxSerialNumber)
{
    CemiFrame frame(11);
    APDU& apdu = frame.apdu();
    apdu.type(IndividualAddressSerialNumberResponse);
 
    uint8_t* data = apdu.data() + 1;
 
    memcpy(data, knxSerialNumber, 6);
    memcpy(data + 6, domainAddress, 2);
 
    //apdu.printPDU();
 
    dataBroadcastRequest(AckDontCare, hopType, SystemPriority, apdu, secCtrl);
}
 
void ApplicationLayer::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)
{
    CemiFrame frame(5);
    APDU& apdu = frame.apdu();
    apdu.type(PropertyValueRead);
    uint8_t* data = apdu.data();
    data += 1;
    data = pushByte(objectIndex, data);
    data = pushByte(propertyId, data);
    pushWord(startIndex & 0xfff, data);
    *data &= ((numberOfElements & 0xf) << 4);
 
    individualSend(ack, hopType, priority, asap, apdu, secCtrl);
}
 
void ApplicationLayer::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)
{
    propertyDataSend(PropertyValueResponse, ack, priority, hopType, asap, secCtrl, objectIndex, propertyId, numberOfElements,
                     startIndex, data, length);
}
 
void ApplicationLayer::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)
{
    propertyExtDataSend(PropertyValueExtResponse, ack, priority, hopType, asap, secCtrl, objectType, objectInstance, propertyId, numberOfElements,
                        startIndex, data, length);
}
 
void ApplicationLayer::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)
{
    uint8_t noOfElem = (returnCode != ReturnCodes::Success) ? 0 : numberOfElements;
    propertyExtDataSend(PropertyValueExtWriteConResponse, ack, priority, hopType, asap, secCtrl, objectType, objectInstance, propertyId, noOfElem,
                        startIndex, &returnCode, 1);
}
 
void ApplicationLayer::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)
{
    propertyDataSend(PropertyValueWrite, ack, priority, hopType, asap, secCtrl, objectIndex, propertyId, numberOfElements,
                     startIndex, data, length);
}
 
void ApplicationLayer::adcReadResponse(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl,
                                       uint8_t channelNr, uint8_t readCount, int16_t value)
{
    CemiFrame frame(4);
    APDU& apdu = frame.apdu();
    apdu.type(ADCResponse);
    uint8_t* data = apdu.data();
 
    data[0] |= (channelNr & 0b111111);
    data[1] = readCount;
    data[2] = value >> 8;
    data[3] = value & 0xFF;
 
    if (asap == _connectedTsap)
        dataConnectedRequest(asap, priority, apdu, secCtrl);
    else
        dataIndividualRequest(ack, hopType, priority, asap, apdu, secCtrl);
}
 
void ApplicationLayer::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)
{
    CemiFrame frame(3 + resultLength);
    APDU& apdu = frame.apdu();
    apdu.type(FunctionPropertyStateResponse);
    uint8_t* data = apdu.data() + 1;
 
    data[0] = objectIndex;
    data[1] = propertyId;
 
    if (resultLength > 0)
        memcpy(&data[2], resultData, resultLength);
 
    if (asap == _connectedTsap)
        dataConnectedRequest(asap, priority, apdu, secCtrl);
    else
        dataIndividualRequest(ack, hopType, priority, asap, apdu, secCtrl);
}
 
void ApplicationLayer::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)
{
    CemiFrame frame(5 + resultLength + 1);
    APDU& apdu = frame.apdu();
    apdu.type(FunctionPropertyExtStateResponse);
    uint8_t* data = apdu.data() + 1;
 
    data[0] = ((uint16_t)objectType) >> 8;
    data[1] = ((uint16_t)objectType) & 0xFF;
    data[2] = objectInstance >> 4;
    data[3] = ((objectInstance & 0x0F) << 4) | (propertyId >> 8);
    data[4] = (propertyId & 0xFF);
 
    // data[5] must contain the return code
    if (resultLength > 0)
        memcpy(&data[5], resultData, resultLength);
 
    if (asap == _connectedTsap)
        dataConnectedRequest(asap, priority, apdu, secCtrl);
    else
        dataIndividualRequest(ack, hopType, priority, asap, apdu, secCtrl);
}
 
void ApplicationLayer::propertyDescriptionReadRequest(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl,
        uint8_t objectIndex, uint8_t propertyId, uint8_t propertyIndex)
{
    CemiFrame frame(4);
    APDU& apdu = frame.apdu();
    apdu.type(PropertyDescriptionRead);
    uint8_t* data = apdu.data();
    data[1] = objectIndex;
    data[2] = propertyId;
    data[3] = propertyIndex;
    individualSend(ack, hopType, priority, asap, apdu, secCtrl);
}
 
void ApplicationLayer::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)
{
    CemiFrame frame(8);
    APDU& apdu = frame.apdu();
    apdu.type(PropertyDescriptionResponse);
    uint8_t* data = apdu.data();
    data[1] = objectIndex;
    data[2] = propertyId;
    data[3] = propertyIndex;
 
    if (writeEnable)
        data[4] |= 0x80;
 
    data[4] |= (type & 0x3f);
    pushWord(maxNumberOfElements & 0xfff, data + 5);
    data[7] = access;
    individualSend(ack, hopType, priority, asap, apdu, secCtrl);
}
 
void ApplicationLayer::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)
{
    CemiFrame frame(16);
    APDU& apdu = frame.apdu();
    apdu.type(PropertyExtDescriptionResponse);
    uint8_t* data = apdu.data();
 
    data[1] = (objectType & 0xff00) >> 8;
    data[2] = (objectType & 0x00ff);
 
    data[3] = (objectInstance & 0x0ff0) >> 4;
    data[4] = (objectInstance & 0x000f) << 4 | (propertyId & 0x0f00) >> 8;
    data[5] = (propertyId & 0x00ff);
 
    data[6] = (descriptionType & 0x000f) << 4 | (propertyIndex & 0x0f00) >> 8;
    data[7] = (propertyIndex & 0x00ff);
    data[8] = 0; // DataPointType ??
    data[9] = 0; // DataPointType ??
    data[10] = 0; // DataPointType ??
    data[11] = 0; // DataPointType ??
 
    if (writeEnable)
        data[12] |= 0x80;
 
    data[12] |= (type & 0x3f);
 
    pushWord(maxNumberOfElements & 0xfff, data + 13);
    data[15] = access;
    individualSend(ack, hopType, priority, asap, apdu, secCtrl);
}
 
void ApplicationLayer::memoryReadRequest(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
        uint16_t memoryAddress)
{
    CemiFrame frame(3);
    APDU& apdu = frame.apdu();
    apdu.type(MemoryRead);
    uint8_t* data = apdu.data();
    *data |= (number & 0x3f);
    pushWord(memoryAddress, data + 1);
    individualSend(ack, hopType, priority, asap, apdu, secCtrl);
}
 
void ApplicationLayer::memoryReadResponse(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
        uint16_t memoryAddress, uint8_t* memoryData)
{
    memorySend(MemoryResponse, ack, priority, hopType, asap, secCtrl, number, memoryAddress, memoryData);
}
 
void ApplicationLayer::memoryRouterReadResponse(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
        uint16_t memoryAddress, uint8_t* memoryData)
{
    memoryRouterSend(MemoryRouterReadResponse, ack, priority, hopType, asap, secCtrl, number, memoryAddress, memoryData);
}
 
void ApplicationLayer::memoryRoutingTableReadResponse(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
        uint16_t memoryAddress, uint8_t* memoryData)
{
    memoryRoutingTableSend(RoutingTableReadResponse, ack, priority, hopType, asap, secCtrl, number, memoryAddress, memoryData);
}
 
void ApplicationLayer::memoryExtReadResponse(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, ReturnCodes code,
        uint8_t number, uint32_t memoryAddress, uint8_t* memoryData)
{
    CemiFrame frame(5 +  number);
    APDU& apdu = frame.apdu();
    apdu.type(MemoryExtReadResponse);
    uint8_t* data = apdu.data();
    data[1] = code;
    data[2] = (memoryAddress >> 16);
    data[3] = (memoryAddress >> 8);
    data[4] = (memoryAddress & 0xFF);
 
    memcpy(&data[5], memoryData, number);
 
    individualSend(ack, hopType, priority, asap, apdu, secCtrl);
}
 
void ApplicationLayer::memoryExtWriteResponse(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, ReturnCodes code,
        uint8_t number, uint32_t memoryAddress, uint8_t* memoryData)
{
    bool withCrc = code == ReturnCodes::SuccessWithCrc;
 
    CemiFrame frame(5 +  (withCrc ? 2 : 0));
    APDU& apdu = frame.apdu();
    apdu.type(MemoryExtWriteResponse);
    uint8_t* data = apdu.data();
    data[1] = code;
    data[2] = (memoryAddress >> 16);
    data[3] = (memoryAddress >> 8);
    data[4] = (memoryAddress & 0xFF);
 
    if (withCrc)
    {
        uint16_t crc = crc16Ccitt(memoryData, number);
        data[5] = crc >> 8;
        data[6] = crc & 0xFF;
    }
 
    individualSend(ack, hopType, priority, asap, apdu, secCtrl);
}
 
void ApplicationLayer::memoryWriteRequest(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl,
        uint8_t number, uint16_t memoryAddress, uint8_t* data)
{
    memorySend(MemoryWrite, ack, priority, hopType, asap, secCtrl, number, memoryAddress, data);
}
 
void ApplicationLayer::userMemoryReadRequest(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl,
        uint8_t number, uint32_t memoryAddress)
{
    CemiFrame frame(4);
    APDU& apdu = frame.apdu();
    apdu.type(UserMemoryRead);
    uint8_t* data = apdu.data();
    data[1] |= (number & 0xf);
    data[1] |= ((memoryAddress >> 12) & 0xf0);
    pushWord(memoryAddress & 0xff, data + 2);
    individualSend(ack, hopType, priority, asap, apdu, secCtrl);
}
 
void ApplicationLayer::userMemoryReadResponse(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl,
        uint8_t number, uint32_t memoryAddress, uint8_t* memoryData)
{
    userMemorySend(UserMemoryResponse, ack, priority, hopType, asap, secCtrl, number, memoryAddress, memoryData);
}
 
void ApplicationLayer::userMemoryWriteRequest(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl,
        uint8_t number, uint32_t memoryAddress, uint8_t* memoryData)
{
    userMemorySend(UserMemoryWrite, ack, priority, hopType, asap, secCtrl, number, memoryAddress, memoryData);
}
 
void ApplicationLayer::userManufacturerInfoReadRequest(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl)
{
    CemiFrame frame(1);
    APDU& apdu = frame.apdu();
    apdu.type(UserManufacturerInfoRead);
    individualSend(ack, hopType, priority, asap, apdu, secCtrl);
}
 
void ApplicationLayer::userManufacturerInfoReadResponse(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl,
        uint8_t* info)
{
    CemiFrame frame(4);
    APDU& apdu = frame.apdu();
    apdu.type(UserMemoryRead);
    uint8_t* data = apdu.data();
    memcpy(data + 1, info, 3);
    individualSend(ack, hopType, priority, asap, apdu, secCtrl);
}
 
void ApplicationLayer::authorizeRequest(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint32_t key)
{
    CemiFrame frame(6);
    APDU& apdu = frame.apdu();
    apdu.type(AuthorizeRequest);
    uint8_t* data = apdu.data();
    pushInt(key, data + 2);
    individualSend(ack, hopType, priority, asap, apdu, secCtrl);
}
 
void ApplicationLayer::authorizeResponse(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t level)
{
    CemiFrame frame(2);
    APDU& apdu = frame.apdu();
    apdu.type(AuthorizeResponse);
    uint8_t* data = apdu.data();
    data[1] = level;
    individualSend(ack, hopType, priority, asap, apdu, secCtrl);
}
 
void ApplicationLayer::keyWriteRequest(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t level, uint32_t key)
{
    CemiFrame frame(6);
    APDU& apdu = frame.apdu();
    apdu.type(KeyWrite);
    uint8_t* data = apdu.data();
    data[1] = level;
    pushInt(key, data + 2);
    individualSend(ack, hopType, priority, asap, apdu, secCtrl);
}
 
void ApplicationLayer::keyWriteResponse(AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t level)
{
    CemiFrame frame(6);
    APDU& apdu = frame.apdu();
    apdu.type(KeyResponse);
    uint8_t* data = apdu.data();
    data[1] = level;
    individualSend(ack, hopType, priority, asap, apdu, secCtrl);
}
 
void ApplicationLayer::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)
{
    CemiFrame frame(5 + length);
    APDU& apdu = frame.apdu();
    apdu.type(type);
    uint8_t* apduData = apdu.data();
    apduData += 1;
    apduData = pushByte(objectIndex, apduData);
    apduData = pushByte(propertyId, apduData);
    pushWord(startIndex & 0xfff, apduData);
    *apduData |= ((numberOfElements & 0xf) << 4);
    apduData += 2;
 
    if (length > 0)
        memcpy(apduData, data, length);
 
    if (asap == _connectedTsap)
        dataConnectedRequest(asap, priority, apdu, secCtrl);
    else
        dataIndividualRequest(ack, hopType, priority, asap, apdu, secCtrl);
}
 
void ApplicationLayer::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)
{
    CemiFrame frame(9 + length);
    APDU& apdu = frame.apdu();
    apdu.type(type);
    uint8_t* apduData = apdu.data();
    apduData += 1;
 
    apduData[0] = ((uint16_t)objectType) >> 8;
    apduData[1] = ((uint16_t)objectType) & 0xFF;
    apduData[2] = objectInstance >> 4;
    apduData[3] = ((objectInstance & 0x0F) << 4) | (propertyId >> 8);
    apduData[4] = (propertyId & 0xFF);
    apduData[5] = numberOfElements;
    apduData[6] = (startIndex & 0x0FFF) >> 8;
    apduData[7] = startIndex & 0xFF;
 
    if (length > 0)
        memcpy(apduData + 8, data, length);
 
    if (asap == _connectedTsap)
        dataConnectedRequest(asap, priority, apdu, secCtrl);
    else
        dataIndividualRequest(ack, hopType, priority, asap, apdu, secCtrl);
}
 
void ApplicationLayer::groupValueSend(ApduType type, AckType ack, uint16_t asap, Priority priority, HopCountType hopType, const SecurityControl& secCtrl,
                                      uint8_t* data,  uint8_t& dataLength)
{
    if (_assocTable == nullptr)
        return;
 
    CemiFrame frame(dataLength + 1);
    APDU& apdu = frame.apdu();
    apdu.type(type);
    uint8_t* apdudata = apdu.data();
 
    if (dataLength == 0)
    {
        // data size is six bit or less. So store in first byte
        *apdudata &= ~0x3f;
        *apdudata |= (*data & 0x3f);
    }
    else
    {
        memcpy(apdudata + 1, data, dataLength);
    }
 
    // no need to check if there is a tsap. This is a response, so the read got through
    uint16_t tsap = (uint16_t)_assocTable->translateAsap(asap);
    dataGroupRequest(ack, hopType, priority, tsap, apdu, secCtrl);
    dataGroupIndication(hopType, priority, tsap, apdu, secCtrl);
}
 
void ApplicationLayer::memorySend(ApduType type, AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
                                  uint16_t memoryAddress, uint8_t* memoryData)
{
    CemiFrame frame(3 + number);
    APDU& apdu = frame.apdu();
    apdu.type(type);
    uint8_t* data = apdu.data();
    *data |= (number & 0x3f);
    pushWord(memoryAddress, data + 1);
 
    if (number > 0)
        memcpy(data + 3, memoryData, number);
 
    individualSend(ack, hopType, priority, asap, apdu, secCtrl);
}
 
void ApplicationLayer::memoryRouterSend(ApduType type, AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
                                        uint16_t memoryAddress, uint8_t* memoryData)
{
    CemiFrame frame(4 + number);
    APDU& apdu = frame.apdu();
    apdu.type(type);
    uint8_t* data = apdu.data();
    data[1] |= (number & 0xf);
    pushWord(memoryAddress & 0xffff, data + 2);
 
    if (number > 0)
        memcpy(data + 4, memoryData, number);
 
    individualSend(ack, hopType, priority, asap, apdu, secCtrl);
}
 
void ApplicationLayer::memoryRoutingTableSend(ApduType type, AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
        uint16_t memoryAddress, uint8_t* memoryData)
{
    CemiFrame frame(4 + number);
    APDU& apdu = frame.apdu();
    apdu.type(type);
    uint8_t* data = apdu.data();
    data[1] |= (number & 0xf);
    pushWord(memoryAddress & 0xffff, data + 2);
 
    if (number > 0)
        memcpy(data + 4, memoryData, number);
 
    individualSend(ack, hopType, priority, asap, apdu, secCtrl);
}
 
void ApplicationLayer::userMemorySend(ApduType type, AckType ack, Priority priority, HopCountType hopType, uint16_t asap, const SecurityControl& secCtrl, uint8_t number,
                                      uint32_t memoryAddress, uint8_t* memoryData)
{
    CemiFrame frame(4 + number);
    APDU& apdu = frame.apdu();
    apdu.type(type);
    uint8_t* data = apdu.data();
    data[1] |= (number & 0xf);
    data[1] |= ((memoryAddress >> 12) & 0xf0);
    pushWord(memoryAddress & 0xffff, data + 2);
 
    if (number > 0)
        memcpy(data + 4, memoryData, number);
 
    individualSend(ack, hopType, priority, asap, apdu, secCtrl);
}
 
void ApplicationLayer::individualIndication(HopCountType hopType, Priority priority, uint16_t tsap, APDU& apdu, const SecurityControl& secCtrl)
{
    uint8_t* data = apdu.data();
 
    switch (apdu.type())
    {
        case DeviceDescriptorRead:
            _bau.deviceDescriptorReadIndication(priority, hopType, tsap, secCtrl, *data & 0x3f);
            break;
 
        case DeviceDescriptorResponse:
            _bau.deviceDescriptorReadAppLayerConfirm(priority, hopType, tsap, secCtrl, *data & 0x3f, data + 1);
            break;
 
        case Restart:
        case RestartMasterReset:
        {
            // These reserved bits must be 0
            uint8_t reservedBits = data[0] & 0x1e;
 
            if (reservedBits != 0)
                return;
 
            // handle erase code for factory reset (setting FDSK again as toolkey, etc.)
            RestartType restartType = (RestartType) (data[0] & 0x3f);
            EraseCode eraseCode = EraseCode::Void;
            uint8_t channel = 0;
 
            if (restartType == RestartType::MasterReset)
            {
                eraseCode = (EraseCode) data[1];
                channel = data[2];
            }
 
            _bau.restartRequestIndication(priority, hopType, tsap, secCtrl, restartType, eraseCode, channel);
            break;
        }
 
        case PropertyValueRead:
        {
            uint16_t startIndex;
            popWord(startIndex, data + 3);
            startIndex &= 0xfff;
            _bau.propertyValueReadIndication(priority, hopType, tsap, secCtrl, data[1], data[2], data[3] >> 4, startIndex);
            break;
        }
 
        case PropertyValueResponse:
        {
            uint16_t startIndex;
            popWord(startIndex, data + 3);
            startIndex &= 0xfff;
            _bau.propertyValueReadAppLayerConfirm(priority, hopType, tsap, secCtrl, data[1], data[2], data[3] >> 4,
                                                  startIndex, data + 5, apdu.length() - 5);
            break;
        }
 
        case PropertyValueWrite:
        {
            uint16_t startIndex;
            popWord(startIndex, data + 3);
            startIndex &= 0xfff;
            _bau.propertyValueWriteIndication(priority, hopType, tsap, secCtrl, data[1], data[2], data[3] >> 4,
                                              startIndex, data + 5, apdu.length() - 5);
            break;
        }
 
        case PropertyValueExtRead:
        {
            ObjectType objectType = (ObjectType)(((data[1] & 0xff) << 8) | (data[2] & 0xff));
            uint8_t objectInstance = ((data[3] & 0xff) << 4) | ((data[4] & 0xff) >> 4);
            uint16_t propertyId = ((data[4] & 0xf) << 8) | (data[5] & 0xff);
            uint8_t numberOfElements = data[6];
            uint16_t startIndex = ((data[7] & 0xf) << 8) | (data[8] & 0xff);
            _bau.propertyValueExtReadIndication(priority, hopType, tsap, secCtrl, objectType, objectInstance, propertyId, numberOfElements, startIndex);
            break;
        }
 
        case PropertyValueExtWriteCon:
        case PropertyValueExtWriteUnCon:
        {
            ObjectType objectType = (ObjectType)(((data[1] & 0xff) << 8) | (data[2] & 0xff));
            uint8_t objectInstance = ((data[3] & 0xff) << 4) | ((data[4] & 0xff) >> 4);
            uint16_t propertyId = ((data[4] & 0xf) << 8) | (data[5] & 0xff);
            uint8_t numberOfElements = data[6];
            uint16_t startIndex = ((data[7] & 0xf) << 8) | (data[8] & 0xff);
            bool confirmed = (apdu.type() == PropertyValueExtWriteCon);
            _bau.propertyValueExtWriteIndication(priority, hopType, tsap, secCtrl, objectType, objectInstance, propertyId, numberOfElements, startIndex,
                                                 data + 9, apdu.length() - 9, confirmed);
            break;
        }
 
        case FunctionPropertyCommand:
            _bau.functionPropertyCommandIndication(priority, hopType, tsap, secCtrl, data[1], data[2], &data[3], apdu.length() - 3); //TODO: check length
            break;
 
        case FunctionPropertyState:
            _bau.functionPropertyStateIndication(priority, hopType, tsap, secCtrl, data[1], data[2], &data[3], apdu.length() - 3); //TODO: check length
            break;
 
        case FunctionPropertyExtCommand:
        {
            ObjectType objectType = (ObjectType)(((data[1] & 0xff) << 8) | (data[2] & 0xff));
            uint8_t objectInstance = ((data[3] & 0xff) << 4) | ((data[4] & 0xff) >> 4);
            uint16_t propertyId = ((data[4] & 0xf) << 8) | (data[5] & 0xff);
            uint8_t* functionInput = &data[6];
            _bau.functionPropertyExtCommandIndication(priority, hopType, tsap, secCtrl, objectType, objectInstance, propertyId, functionInput, apdu.length() - 6);
            break;
        }
 
        case FunctionPropertyExtState:
        {
            ObjectType objectType = (ObjectType)(((data[1] & 0xff) << 8) | (data[2] & 0xff));
            uint8_t objectInstance = ((data[3] & 0xff) << 4) | ((data[4] & 0xff) >> 4);
            uint16_t propertyId = ((data[4] & 0xf) << 8) | (data[5] & 0xff);
            uint8_t* functionInput = &data[6];
            _bau.functionPropertyExtStateIndication(priority, hopType, tsap, secCtrl, objectType, objectInstance, propertyId, functionInput, apdu.length() - 6);
            break;
        }
 
        case PropertyDescriptionRead:
            _bau.propertyDescriptionReadIndication(priority, hopType, tsap, secCtrl, data[1], data[2], data[3]);
            break;
 
        case PropertyExtDescriptionRead:
        {
            ObjectType objectType = (ObjectType)(((data[1] & 0xff) << 8) | (data[2] & 0xff));
            uint16_t objectInstance = ((data[3] & 0xff) << 4) | ((data[4] & 0xf0) >> 4);
            uint16_t propertyId = ((data[4] & 0x0f) << 8) | (data[5] & 0xff);
            uint8_t descriptionType = (data[6] & 0xf0) >> 4;
            uint16_t propertyIndex = ((data[7] & 0x0f) << 8) | (data[8] & 0xff);
 
            _bau.propertyExtDescriptionReadIndication(priority, hopType, tsap, secCtrl, objectType, objectInstance, propertyId, descriptionType, propertyIndex);
            break;
        }
 
        case PropertyDescriptionResponse:
            _bau.propertyDescriptionReadAppLayerConfirm(priority, hopType, tsap, secCtrl, data[1], data[2], data[3],
                    (data[4] & 0x80) > 0, data[4] & 0x3f, getWord(data + 5) & 0xfff, data[7]);
            break;
 
        case MemoryRead:
            _bau.memoryReadIndication(priority, hopType, tsap, secCtrl, data[0] & 0x3f, getWord(data + 1));
            break;
 
        case MemoryResponse:
            _bau.memoryReadAppLayerConfirm(priority, hopType, tsap, secCtrl, data[0] & 0x3f, getWord(data + 1), data + 3);
            break;
 
        case MemoryWrite:
            _bau.memoryWriteIndication(priority, hopType, tsap, secCtrl, data[0] & 0x3f, getWord(data + 1), data + 3);
            break;
 
        // EC
        case MemoryRouterWrite:
            print("MemoryRouterWrite: ");
            _bau.memoryRouterWriteIndication(priority, hopType, tsap, secCtrl, data[1], getWord(data + 2), data + 4);
            break;
 
        case MemoryRouterReadResponse:
            _bau.memoryRouterReadAppLayerConfirm(priority, hopType, tsap, secCtrl, data[1], getWord(data + 2), data + 4);
            break;
 
        case RoutingTableOpen:
            println("Received OpenRoutingTable APDU, doing nothing");
            break;
 
        case RoutingTableRead:
            _bau.memoryRoutingTableReadIndication(priority, hopType, tsap, secCtrl, data[1], getWord(data + 2));
            break;
 
        case RoutingTableReadResponse:
            _bau.memoryRoutingTableReadAppLayerConfirm(priority, hopType, tsap, secCtrl, data[1], getWord(data + 2), data + 4);
            break;
 
        case RoutingTableWrite:
            _bau.memoryRoutingTableWriteIndication(priority, hopType, tsap, secCtrl, data[1], getWord(data + 2), data + 4);
            break;
 
        // end EC
 
        case MemoryExtRead:
        {
            uint8_t number = data[1];
            uint32_t memoryAddress =  ((data[2] & 0xff) << 16) | ((data[3] & 0xff) << 8) | (data[4] & 0xff);
            _bau.memoryExtReadIndication(priority, hopType, tsap, secCtrl, number, memoryAddress);
            break;
        }
 
        //case MemoryExtReadResponse:
        //    _bau.memoryExtReadAppLayerConfirm(priority, hopType, tsap, secCtrl, data[0], getInt(data + 1), data + 4); // TODO return code
        //    break;
        case MemoryExtWrite:
        {
            uint8_t number = data[1];
            uint32_t memoryAddress =  ((data[2] & 0xff) << 16) | ((data[3] & 0xff) << 8) | (data[4] & 0xff);
            _bau.memoryExtWriteIndication(priority, hopType, tsap, secCtrl, number, memoryAddress, data + 5);
            break;
        }
 
        //case MemoryExtWriteResponse:
        //    _bau.memoryExtWriteAppLayerConfirm(priority, hopType, tsap, secCtrl, data[0] & 0x3f, getWord(data + 1), data + 3); // TODO return code
        //    break;
        case UserMemoryRead:
        {
            uint32_t address = ((data[1] & 0xf0) << 12) + (data[2] << 8) + data[3];
            _bau.userMemoryReadIndication(priority, hopType, tsap, secCtrl, data[1] & 0xf, address);
            break;
        }
 
        case UserMemoryResponse:
        {
            uint32_t address = ((data[1] & 0xf0) << 12) + (data[2] << 8) + data[3];
            _bau.userMemoryReadAppLayerConfirm(priority, hopType, tsap, secCtrl, data[1] & 0xf, address, data + 4);
            break;
        }
 
        case UserMemoryWrite:
        {
            uint32_t address = ((data[1] & 0xf0) << 12) + (data[2] << 8) + data[3];
            _bau.userMemoryWriteIndication(priority, hopType, tsap, secCtrl, data[1] & 0xf, address, data + 4);
            break;
        }
 
        case UserManufacturerInfoRead:
            _bau.userManufacturerInfoIndication(priority, hopType, tsap, secCtrl);
            break;
 
        case UserManufacturerInfoResponse:
            _bau.userManufacturerInfoAppLayerConfirm(priority, hopType, tsap, secCtrl, data + 1);
            break;
 
        case AuthorizeRequest:
            _bau.authorizeIndication(priority, hopType, tsap, secCtrl, getInt(data + 2));
            break;
 
        case AuthorizeResponse:
            _bau.authorizeAppLayerConfirm(priority, hopType, tsap, secCtrl, data[1]);
            break;
 
        case KeyWrite:
            _bau.keyWriteIndication(priority, hopType, tsap, secCtrl, data[1], getInt(data + 2));
            break;
 
        case KeyResponse:
            _bau.keyWriteAppLayerConfirm(priority, hopType, tsap, secCtrl, data[1]);
            break;
 
        case ADCRead:
        {
            //Since we don't have an adc for bus voltage, we just send zero as readCount
            uint8_t channelNr = data[0] & 0b111111;
            this->adcReadResponse(AckRequested, priority, hopType, tsap, secCtrl, channelNr, 0, 0);
            break;
        }
 
        default:
            print("Individual-indication: unhandled APDU-Type: ");
            apdu.printPDU();
    }
}
 
void ApplicationLayer::individualConfirm(AckType ack, HopCountType hopType, Priority priority, uint16_t tsap, APDU& apdu, const SecurityControl& secCtrl, bool status)
{
    uint8_t* data = apdu.data();
 
    switch (apdu.type())
    {
        case DeviceDescriptorRead:
            _bau.deviceDescriptorReadLocalConfirm(ack, priority, hopType, tsap, secCtrl, *data & 0x3f, status);
            break;
 
        case DeviceDescriptorResponse:
            _bau.deviceDescriptorReadResponseConfirm(ack, priority, hopType, tsap, secCtrl, *data & 0x3f, data + 1, status);
            break;
 
        case Restart:
            _bau.restartRequestLocalConfirm(ack, priority, hopType, tsap, secCtrl, status);
            break;
 
        case PropertyValueRead:
        {
            uint16_t startIndex;
            popWord(startIndex, data + 3);
            startIndex &= 0xfff;
            _bau.propertyValueReadLocalConfirm(ack, priority, hopType, tsap, secCtrl, data[1], data[2], data[3] >> 4,
                                               startIndex, status);
            break;
        }
 
        case PropertyValueResponse:
        {
            uint16_t startIndex;
            popWord(startIndex, data + 3);
            startIndex &= 0xfff;
            _bau.propertyValueReadResponseConfirm(ack, priority, hopType, tsap, secCtrl, data[1], data[2], data[3] >> 4,
                                                  startIndex, data + 5, apdu.length() - 5, status);
            break;
        }
 
        case PropertyValueWrite:
        {
            uint16_t startIndex;
            popWord(startIndex, data + 3);
            startIndex &= 0xfff;
            _bau.propertyValueWriteLocalConfirm(ack, priority, hopType, tsap, secCtrl, data[1], data[2], data[3] >> 4,
                                                startIndex, data + 5, apdu.length() - 5, status);
            break;
        }
 
        case PropertyDescriptionRead:
            _bau.propertyDescriptionReadLocalConfirm(ack, priority, hopType, tsap, secCtrl, data[1], data[2], data[3], status);
            break;
 
        case PropertyExtDescriptionRead:
            _bau.propertyExtDescriptionReadLocalConfirm(ack, priority, hopType, tsap, secCtrl, data[1], data[2], data[3], status);
            break;
 
        case PropertyDescriptionResponse:
            _bau.propertyDescriptionReadResponseConfirm(ack, priority, hopType, tsap, secCtrl, data[1], data[2], data[3],
                    (data[4] & 0x80) > 0, data[4] & 0x3f, getWord(data + 5) & 0xfff, data[7], status);
            break;
 
        case MemoryRead:
            _bau.memoryReadLocalConfirm(ack, priority, hopType, tsap, secCtrl, data[0] & 0x3f, getWord(data + 1), status);
            break;
 
        case MemoryResponse:
            _bau.memoryReadResponseConfirm(ack, priority, hopType, tsap, secCtrl, data[0] & 0x3f, getWord(data + 1), data + 3, status);
            break;
 
        case MemoryWrite:
            _bau.memoryWriteLocalConfirm(ack, priority, hopType, tsap, secCtrl, data[0] & 0x3f, getWord(data + 1), data + 3, status);
            break;
 
        case MemoryExtRead:
            _bau.memoryExtReadLocalConfirm(ack, priority, hopType, tsap, secCtrl, data[0] & 0x3f, getWord(data + 1), status);
            break;
 
        case MemoryExtReadResponse:
            _bau.memoryExtReadResponseConfirm(ack, priority, hopType, tsap, secCtrl, data[0] & 0x3f, getWord(data + 1), data + 3, status);
            break;
 
        case MemoryExtWrite:
            _bau.memoryExtWriteLocalConfirm(ack, priority, hopType, tsap, secCtrl, data[0] & 0x3f, getWord(data + 1), data + 3, status);
            break;
 
        case MemoryExtWriteResponse:
            _bau.memoryExtWriteResponseConfirm(ack, priority, hopType, tsap, secCtrl, data[0] & 0x3f, getWord(data + 1), data + 3, status);
            break;
 
        case UserMemoryRead:
        {
            uint32_t address = ((data[1] & 0xf0) << 12) + (data[2] << 8) + data[3];
            _bau.memoryReadLocalConfirm(ack, priority, hopType, tsap, secCtrl, data[1] & 0xf, address, status);
            break;
        }
 
        case UserMemoryResponse:
        {
            uint32_t address = ((data[1] & 0xf0) << 12) + (data[2] << 8) + data[3];
            _bau.memoryReadResponseConfirm(ack, priority, hopType, tsap, secCtrl, data[1] & 0xf, address, data + 4, status);
            break;
        }
 
        case UserMemoryWrite:
        {
            uint32_t address = ((data[1] & 0xf0) << 12) + (data[2] << 8) + data[3];
            _bau.memoryWriteLocalConfirm(ack, priority, hopType, tsap, secCtrl, data[1] & 0xf, address, data + 4, status);
            break;
        }
 
        case UserManufacturerInfoRead:
            _bau.userManufacturerInfoLocalConfirm(ack, priority, hopType, tsap, secCtrl, status);
            break;
 
        case UserManufacturerInfoResponse:
            _bau.userManufacturerInfoResponseConfirm(ack, priority, hopType, tsap, secCtrl, data + 1, status);
            break;
 
        case AuthorizeRequest:
            _bau.authorizeLocalConfirm(ack, priority, hopType, tsap, secCtrl, getInt(data + 2), status);
            break;
 
        case AuthorizeResponse:
            _bau.authorizeResponseConfirm(ack, priority, hopType, tsap, secCtrl, data[1], status);
            break;
 
        case KeyWrite:
            _bau.keyWriteLocalConfirm(ack, priority, hopType, tsap, secCtrl, data[1], getInt(data + 2), status);
            break;
 
        case KeyResponse:
            _bau.keyWriteResponseConfirm(ack, priority, hopType, tsap, secCtrl, data[1], status);
            break;
 
        default:
            print("Individual-confirm: unhandled APDU-Type: ");
            println(apdu.type());
    }
}
 
void ApplicationLayer::individualSend(AckType ack, HopCountType hopType, Priority priority, uint16_t asap, APDU& apdu, const SecurityControl& secCtrl)
{
    if (asap == _connectedTsap)
        dataConnectedRequest(asap, priority, apdu, secCtrl);
    else
        dataIndividualRequest(ack, hopType, priority, asap, apdu, secCtrl);
}
 
bool ApplicationLayer::isConnected()
{
    return (_connectedTsap >= 0);
}
 
void ApplicationLayer::dataGroupRequest(AckType ack, HopCountType hopType, Priority priority, uint16_t tsap, APDU& apdu, const SecurityControl& secCtrl)
{
    (void)secCtrl; // We do not need security related information in the plain application layer
    _transportLayer->dataGroupRequest(ack, hopType, priority, tsap, apdu);
}
void ApplicationLayer::dataBroadcastRequest(AckType ack, HopCountType hopType, Priority priority, APDU& apdu, const SecurityControl& secCtrl)
{
    (void)secCtrl; // We do not need security related information in the plain application layer
    _transportLayer->dataBroadcastRequest(ack, hopType, SystemPriority, apdu);
}
void ApplicationLayer::dataSystemBroadcastRequest(AckType ack, HopCountType hopType, Priority priority, APDU& apdu, const SecurityControl& secCtrl)
{
    (void)secCtrl; // We do not need security related information in the plain application layer
    _transportLayer->dataSystemBroadcastRequest(ack, hopType, SystemPriority, apdu);
}
void ApplicationLayer::dataIndividualRequest(AckType ack, HopCountType hopType, Priority priority, uint16_t destination, APDU& apdu, const SecurityControl& secCtrl)
{
    (void)secCtrl; // We do not need security related information in the plain application layer
    _transportLayer->dataIndividualRequest(ack, hopType, priority, destination, apdu);
}
void ApplicationLayer::dataConnectedRequest(uint16_t tsap, Priority priority, APDU& apdu, const SecurityControl& secCtrl)
{
    (void)secCtrl; // We do not need security related information in the plain application layer
    // apdu must be valid until it was confirmed
    _transportLayer->dataConnectedRequest(tsap, priority, apdu);
}