2018-04-09 22:30:23 +02:00
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#include "transport_layer.h"
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#include "apdu.h"
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#include "cemi_frame.h"
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#include "network_layer.h"
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#include "application_layer.h"
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#include "platform.h"
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#include <stdio.h>
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TransportLayer::TransportLayer(ApplicationLayer& layer, AddressTableObject& gat, Platform& platform): _savedFrame(0),
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_savedFrameConnecting(0), _applicationLayer(layer), _groupAddressTable(gat), _platform(platform)
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{
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_currentState = Closed;
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}
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void TransportLayer::networkLayer(NetworkLayer& layer)
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{
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_networkLayer = &layer;
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}
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void TransportLayer::dataIndividualIndication(uint16_t destination, HopCountType hopType, Priority priority, uint16_t source, TPDU& tpdu)
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{
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//if (tpdu.apdu().length() > 0)
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//{
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// print.print("<- TL ");
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// tpdu.printPDU();
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// print.print("<- TL ");
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// tpdu.apdu().printPDU();
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//}
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uint8_t sequenceNo = tpdu.sequenceNumber();
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switch (tpdu.type())
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{
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case DataInduvidual:
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_applicationLayer.dataIndividualIndication(hopType, priority, source, tpdu.apdu());
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return;
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case DataConnected:
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if (source == _connectionAddress)
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{
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if (sequenceNo == _seqNoRecv)
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{
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//E4
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switch (_currentState)
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{
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case Closed:
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//A0 nothing
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break;
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case OpenIdle:
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case OpenWait:
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A2(source, priority, tpdu.apdu());
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break;
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case Connecting:
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_currentState = Closed;
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A6(destination);
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break;
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}
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}
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else if(sequenceNo == ((_seqNoRecv -1) & 0xF))
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{
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//E5
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switch (_currentState)
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{
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case Closed:
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//A0
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break;
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case OpenIdle:
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case OpenWait:
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case Connecting:
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A3(source, priority, tpdu);
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break;
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}
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}
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else
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{
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//E6
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switch (_currentState)
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{
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case Closed:
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//A0
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break;
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case OpenIdle:
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case OpenWait:
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A4(source, priority, tpdu);
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break;
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case Connecting:
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A6(destination);
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break;
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}
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}
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}
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else
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{
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//E7
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switch (_currentState)
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{
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case Closed:
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case OpenIdle:
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case OpenWait:
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//A0
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break;
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case Connecting:
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A10(source);
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break;
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}
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}
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break;
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case Connect:
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if (source == _connectionAddress)
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{
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//E0
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switch (_currentState)
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{
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case Closed:
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_currentState = OpenIdle;
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A1(source);
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break;
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case OpenWait:
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case OpenIdle:
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case Connecting:
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//A0: do nothing
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break;
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}
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}
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else
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{
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//E1
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switch (_currentState)
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{
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case Closed:
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_currentState = OpenIdle;
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A1(source);
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break;
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case OpenIdle:
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case OpenWait:
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case Connecting:
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A10(source);
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break;
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}
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}
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break;
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case Disconnect:
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if (source == _connectionAddress)
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{
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//E2
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switch (_currentState)
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{
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case Closed:
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//A0 do nothing
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break;
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case OpenIdle:
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case OpenWait:
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case Connecting:
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_currentState = Closed;
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A5(source);
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break;
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default:
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break;
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}
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}
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else
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{
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//E3
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//A0: do nothing
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}
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break;
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case Ack:
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if (source == _connectionAddress)
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{
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if (sequenceNo == _seqNoSend)
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{
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//E8
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switch (_currentState)
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{
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case Closed:
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case OpenIdle:
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//A0
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break;
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case OpenWait:
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_currentState = OpenIdle;
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A8();
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break;
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case Connecting:
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_currentState = Closed;
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A6(source);
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break;
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}
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}
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else
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{
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//E9
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switch (_currentState)
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{
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case Closed:
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case OpenIdle:
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//A0
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break;
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case OpenWait:
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case Connecting:
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_currentState = Closed;
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A6(source);
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break;
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}
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}
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}
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else
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{
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//E10
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switch (_currentState)
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{
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case Connecting:
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A10(source);
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break;
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}
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}
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break;
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case Nack:
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if (source == _connectionAddress)
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{
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if (sequenceNo != _seqNoSend)
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{
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//E11
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switch (_currentState)
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{
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case Closed:
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case OpenIdle:
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case OpenWait:
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//A0
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break;
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case Connecting:
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_currentState = Closed;
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A6(source);
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break;
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}
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}
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else
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{
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if (_repCount < _maxRepCount)
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{
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//E12
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switch (_currentState)
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{
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case Closed:
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//A0
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break;
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case Connecting:
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case OpenIdle:
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_currentState = Closed;
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A6(source);
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break;
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case OpenWait:
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A9();
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break;
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}
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}
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else
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{
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//E13
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switch (_currentState)
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{
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case Closed:
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//A0
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break;
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case OpenIdle:
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case OpenWait:
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case Connecting:
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_currentState = Closed;
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A6(source);
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break;
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}
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}
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}
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}
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else
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{
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//E14
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switch (_currentState)
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{
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case Closed:
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case OpenIdle:
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case OpenWait:
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//A0
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break;
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case Connecting:
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A10(source);
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break;
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default:
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break;
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}
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}
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break;
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default:
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break;
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}
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}
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void TransportLayer::dataIndividualConfirm(AckType ack, uint16_t destination, HopCountType hopType, Priority priority, TPDU& tpdu, bool status)
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{
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TpduType type = tpdu.type();
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switch (type)
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{
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case DataInduvidual:
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_applicationLayer.dataIndividualConfirm(ack, hopType, priority, destination, tpdu.apdu(), status);
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break;
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case DataConnected:
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//E22
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//A0: do nothing
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break;
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case Connect:
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if (status)
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{
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//E19
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switch (_currentState)
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{
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case Closed:
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case OpenIdle:
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case OpenWait:
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//A0: do nothing
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break;
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case Connecting:
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_currentState = OpenIdle;
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A13(destination);
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break;
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}
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}
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else
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{
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//E20
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switch (_currentState)
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{
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case Closed:
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case OpenIdle:
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case OpenWait:
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//A0: do nothing
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break;
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case Connecting:
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A5(destination);
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break;
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}
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}
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break;
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case Disconnect:
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//E21
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//A0: do nothing
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break;
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case Ack:
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//E23
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//A0: do nothing
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break;
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case Nack:
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//E24
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//A0: do nothing
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break;
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}
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}
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void TransportLayer::dataGroupIndication(uint16_t destination, HopCountType hopType, Priority priority, uint16_t source, TPDU& tpdu)
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{
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uint16_t tsap = _groupAddressTable.getTsap(destination);
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_applicationLayer.dataGroupIndication(hopType, priority, tsap, tpdu.apdu());
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}
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void TransportLayer::dataGroupConfirm(AckType ack, uint16_t source, uint16_t destination, HopCountType hopType, Priority priority, TPDU& tpdu, bool status)
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{
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_applicationLayer.dataGroupConfirm(ack, hopType, priority, destination, tpdu.apdu(), status);
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}
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void TransportLayer::dataBroadcastIndication(HopCountType hopType, Priority priority, uint16_t source, TPDU& tpdu)
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{
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_applicationLayer.dataBroadcastIndication(hopType, priority, source, tpdu.apdu());
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}
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void TransportLayer::dataBroadcastConfirm(AckType ack, HopCountType hopType, Priority priority, TPDU& tpdu, bool status)
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{
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_applicationLayer.dataBroadcastConfirm(ack, hopType, priority, tpdu.apdu(), status);
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}
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void TransportLayer::dataSystemBroadcastIndication(HopCountType hopType, Priority priority, uint16_t source, TPDU& tpdu)
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{
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_applicationLayer.dataSystemBroadcastIndication(hopType, priority, source, tpdu.apdu());
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}
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void TransportLayer::dataSystemBroadcastConfirm(AckType ack, HopCountType hopType, TPDU& tpdu, Priority priority, bool status)
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{
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_applicationLayer.dataSystemBroadcastConfirm(hopType, priority, tpdu.apdu(), status);
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}
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void TransportLayer::dataGroupRequest(AckType ack, HopCountType hopType, Priority priority, uint16_t tsap, APDU& apdu)
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{
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uint16_t groupAdress = _groupAddressTable.getGa(tsap);
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TPDU& tpdu = apdu.frame().tpdu();
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_networkLayer->dataGroupRequest(ack, groupAdress, hopType, priority, tpdu);
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}
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void TransportLayer::dataBroadcastRequest(AckType ack, HopCountType hopType, Priority priority, APDU& apdu)
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{
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TPDU& tpdu = apdu.frame().tpdu();
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_networkLayer->dataBroadcastRequest(ack, hopType, priority, tpdu);
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}
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void TransportLayer::dataSystemBroadcastRequest(AckType ack, HopCountType hopType, Priority priority, APDU& apdu)
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{
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TPDU& tpdu = apdu.frame().tpdu();
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return _networkLayer->dataSystemBroadcastRequest(ack, hopType, priority, tpdu);
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}
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void TransportLayer::dataIndividualRequest(AckType ack, HopCountType hopType, Priority priority, uint16_t destination, APDU& apdu)
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{
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|
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//print.print("-> TL ");
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//apdu.printPDU();
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TPDU& tpdu = apdu.frame().tpdu();
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_networkLayer->dataIndividualRequest(ack, destination, hopType, priority, tpdu);
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}
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void TransportLayer::connectRequest(uint16_t destination, Priority priority)
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{
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//E25
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switch (_currentState)
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{
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case Closed:
|
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_currentState = Connecting;
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A12(destination, priority);
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break;
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case OpenIdle:
|
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case OpenWait:
|
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case Connecting:
|
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_currentState = Closed;
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A6(destination);
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break;
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|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void TransportLayer::disconnectRequest(uint16_t tsap, Priority priority)
|
|
|
|
{
|
|
|
|
//E26
|
|
|
|
switch (_currentState)
|
|
|
|
{
|
|
|
|
case Closed:
|
|
|
|
A15(priority, tsap);
|
|
|
|
break;
|
|
|
|
case OpenIdle:
|
|
|
|
case OpenWait:
|
|
|
|
case Connecting:
|
|
|
|
_currentState = Closed;
|
|
|
|
A14(tsap, priority);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void TransportLayer::dataConnectedRequest(uint16_t tsap, Priority priority, APDU& apdu)
|
|
|
|
{
|
|
|
|
//print.print("-> TL ");
|
|
|
|
//apdu.printPDU();
|
|
|
|
//E15
|
|
|
|
switch (_currentState)
|
|
|
|
{
|
|
|
|
case Closed:
|
|
|
|
//A0
|
|
|
|
break;
|
|
|
|
case OpenIdle:
|
|
|
|
_currentState = OpenWait;
|
|
|
|
A7(priority, apdu);
|
|
|
|
break;
|
|
|
|
case OpenWait:
|
|
|
|
case Connecting:
|
|
|
|
A11(tsap, priority, apdu);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void TransportLayer::connectionTimeoutIndication()
|
|
|
|
{
|
|
|
|
//E16
|
|
|
|
switch (_currentState)
|
|
|
|
{
|
|
|
|
case Closed:
|
|
|
|
//A0: do nothing
|
|
|
|
break;
|
|
|
|
case OpenIdle:
|
|
|
|
case OpenWait:
|
|
|
|
case Connecting:
|
|
|
|
_currentState = Closed;
|
|
|
|
A6(_connectionAddress);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void TransportLayer::ackTimeoutIndication()
|
|
|
|
{
|
|
|
|
if (_repCount < _maxRepCount)
|
|
|
|
{
|
|
|
|
//E17
|
|
|
|
switch (_currentState)
|
|
|
|
{
|
|
|
|
case Closed:
|
|
|
|
case OpenIdle:
|
|
|
|
case Connecting:
|
|
|
|
//A0: do nothing
|
|
|
|
break;
|
|
|
|
case OpenWait:
|
|
|
|
A9();
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
//E18
|
|
|
|
switch (_currentState)
|
|
|
|
{
|
|
|
|
case Closed:
|
|
|
|
case OpenIdle:
|
|
|
|
case Connecting:
|
|
|
|
//A0: do nothing
|
|
|
|
break;
|
|
|
|
case OpenWait:
|
|
|
|
_currentState = Closed;
|
|
|
|
A6(_connectionAddress);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
void TransportLayer::loop()
|
|
|
|
{
|
|
|
|
uint32_t millis = _platform.millis();
|
|
|
|
if (_connectionTimeoutEnabled
|
|
|
|
&& (millis - _connectionTimeoutStartMillis) > _connectionTimeoutMillis)
|
|
|
|
connectionTimeoutIndication();
|
|
|
|
|
|
|
|
if (_ackTimeoutEnabled
|
|
|
|
&& (millis - _ackTimeoutStartMillis) > _ackTimeoutMillis)
|
|
|
|
ackTimeoutIndication();
|
|
|
|
|
|
|
|
if (_savedConnectingValid)
|
|
|
|
{
|
|
|
|
//retry saved event
|
|
|
|
_savedConnectingValid = false;
|
|
|
|
dataConnectedRequest(_savedTsapConnecting, _savedPriorityConnecting, _savedFrameConnecting.apdu());
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void TransportLayer::sendControlTelegram(TpduType pduType, uint8_t seqNo)
|
|
|
|
{
|
|
|
|
CemiFrame frame(0);
|
|
|
|
TPDU& tpdu = frame.tpdu();
|
|
|
|
tpdu.type(pduType);
|
|
|
|
tpdu.sequenceNumber(seqNo);
|
|
|
|
_networkLayer->dataIndividualRequest(AckRequested, _connectionAddress, NetworkLayerParameter,
|
|
|
|
SystemPriority, tpdu);
|
|
|
|
}
|
|
|
|
|
|
|
|
void TransportLayer::A0()
|
|
|
|
{
|
|
|
|
/* do nothing */
|
|
|
|
}
|
|
|
|
|
|
|
|
void TransportLayer::A1(uint16_t source)
|
|
|
|
{
|
|
|
|
_connectionAddress = source;
|
|
|
|
_applicationLayer.connectIndication(source);
|
|
|
|
_seqNoSend = 0;
|
|
|
|
_seqNoRecv = 0;
|
2018-04-11 23:15:18 +02:00
|
|
|
enableConnectionTimeout();
|
2018-04-09 22:30:23 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
void incSeqNr(uint8_t& seqNr)
|
|
|
|
{
|
|
|
|
seqNr += 1;
|
|
|
|
if (seqNr > 0xf)
|
|
|
|
seqNr = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
void TransportLayer::A2(uint16_t source, Priority priority, APDU& apdu)
|
|
|
|
{
|
|
|
|
sendControlTelegram(Ack, _seqNoRecv);
|
|
|
|
incSeqNr(_seqNoRecv);
|
|
|
|
_applicationLayer.dataConnectedIndication(priority, source, apdu);
|
|
|
|
enableConnectionTimeout();
|
|
|
|
}
|
|
|
|
|
|
|
|
void TransportLayer::A3(uint16_t source, Priority priority, TPDU& recTpdu)
|
|
|
|
{
|
|
|
|
sendControlTelegram(Ack, recTpdu.sequenceNumber());
|
|
|
|
enableConnectionTimeout();
|
|
|
|
}
|
|
|
|
|
|
|
|
void TransportLayer::A4(uint16_t source, Priority priority, TPDU& recTpdu)
|
|
|
|
{
|
|
|
|
sendControlTelegram(Nack, recTpdu.sequenceNumber());
|
|
|
|
enableConnectionTimeout();
|
|
|
|
}
|
|
|
|
|
|
|
|
void TransportLayer::A5(uint16_t tsap)
|
|
|
|
{
|
|
|
|
_applicationLayer.disconnectIndication(tsap);
|
|
|
|
disableConnectionTimeout();
|
|
|
|
disableAckTimeout();
|
|
|
|
}
|
|
|
|
|
|
|
|
void TransportLayer::A6(uint16_t tsap)
|
|
|
|
{
|
|
|
|
sendControlTelegram(Disconnect, 0);
|
|
|
|
_applicationLayer.disconnectIndication(tsap);
|
|
|
|
disableConnectionTimeout();
|
|
|
|
disableAckTimeout();
|
|
|
|
}
|
|
|
|
|
|
|
|
void TransportLayer::A7(Priority priority, APDU& apdu)
|
|
|
|
{
|
|
|
|
_savedPriority = priority;
|
|
|
|
_savedFrame = apdu.frame();
|
|
|
|
TPDU& tpdu = apdu.frame().tpdu();
|
|
|
|
tpdu.type(DataConnected);
|
|
|
|
tpdu.sequenceNumber(_seqNoSend);
|
|
|
|
_networkLayer->dataIndividualRequest(AckRequested, _connectionAddress, NetworkLayerParameter, priority, tpdu);
|
|
|
|
_repCount = 0;
|
|
|
|
enableAckTimeout();
|
|
|
|
enableConnectionTimeout();
|
|
|
|
}
|
|
|
|
|
|
|
|
void TransportLayer::A8()
|
|
|
|
{
|
|
|
|
disableAckTimeout();
|
|
|
|
incSeqNr(_seqNoSend);
|
|
|
|
_applicationLayer.dataConnectedConfirm(0);
|
|
|
|
enableConnectionTimeout();
|
|
|
|
}
|
|
|
|
|
|
|
|
void TransportLayer::A9()
|
|
|
|
{
|
|
|
|
TPDU& tpdu = _savedFrame.tpdu();
|
|
|
|
// tpdu is still initialized from last send
|
|
|
|
_networkLayer->dataIndividualRequest(AckRequested, _connectionAddress, NetworkLayerParameter, _savedPriority, tpdu);
|
|
|
|
_repCount += 1;
|
|
|
|
enableAckTimeout();
|
|
|
|
enableConnectionTimeout();
|
|
|
|
}
|
|
|
|
|
|
|
|
void TransportLayer::A10(uint16_t source)
|
|
|
|
{
|
|
|
|
CemiFrame frame(0);
|
|
|
|
TPDU& tpdu = frame.tpdu();
|
|
|
|
tpdu.type(Disconnect);
|
|
|
|
tpdu.sequenceNumber(0);
|
|
|
|
_networkLayer->dataIndividualRequest(AckRequested, source, NetworkLayerParameter, SystemPriority, tpdu);
|
|
|
|
}
|
|
|
|
|
|
|
|
void TransportLayer::A11(uint16_t tsap, Priority priority, APDU& apdu)
|
|
|
|
{
|
|
|
|
_savedTsapConnecting = tsap;
|
|
|
|
_savedPriorityConnecting = priority;
|
|
|
|
_savedFrameConnecting = apdu.frame();
|
|
|
|
_savedConnectingValid = true;
|
|
|
|
}
|
|
|
|
|
|
|
|
void TransportLayer::A12(uint16_t destination, Priority priority)
|
|
|
|
{
|
|
|
|
_connectionAddress = destination;
|
|
|
|
CemiFrame frame(0);
|
|
|
|
TPDU& tpdu = frame.tpdu();
|
|
|
|
tpdu.type(Connect);
|
|
|
|
_seqNoRecv = 0;
|
|
|
|
_seqNoSend = 0;
|
|
|
|
enableConnectionTimeout();
|
|
|
|
}
|
|
|
|
|
|
|
|
void TransportLayer::A13(uint16_t destination)
|
|
|
|
{
|
|
|
|
_applicationLayer.connectConfirm(destination, 0, true);
|
|
|
|
}
|
|
|
|
|
|
|
|
void TransportLayer::A14(uint16_t tsap, Priority priority)
|
|
|
|
{
|
|
|
|
CemiFrame frame(0);
|
|
|
|
TPDU& tpdu = frame.tpdu();
|
|
|
|
tpdu.type(Disconnect);
|
|
|
|
tpdu.sequenceNumber(0);
|
|
|
|
_networkLayer->dataIndividualRequest(AckRequested, _connectionAddress, NetworkLayerParameter, SystemPriority, tpdu);
|
|
|
|
_applicationLayer.disconnectConfirm(priority, tsap, true);
|
|
|
|
}
|
|
|
|
|
|
|
|
void TransportLayer::A15(Priority priority, uint16_t tsap)
|
|
|
|
{
|
|
|
|
_applicationLayer.disconnectConfirm(priority, tsap, true);
|
|
|
|
disableConnectionTimeout();
|
|
|
|
disableAckTimeout();
|
|
|
|
}
|
|
|
|
|
|
|
|
void TransportLayer::enableConnectionTimeout()
|
|
|
|
{
|
|
|
|
_connectionTimeoutStartMillis = _platform.millis();
|
|
|
|
_connectionTimeoutEnabled = true;
|
|
|
|
}
|
|
|
|
|
|
|
|
void TransportLayer::disableConnectionTimeout()
|
|
|
|
{
|
|
|
|
_connectionTimeoutEnabled = false;
|
|
|
|
}
|
|
|
|
|
|
|
|
void TransportLayer::enableAckTimeout()
|
|
|
|
{
|
|
|
|
_ackTimeoutStartMillis = _platform.millis();
|
|
|
|
_ackTimeoutEnabled = true;
|
|
|
|
}
|
|
|
|
|
|
|
|
void TransportLayer::disableAckTimeout()
|
|
|
|
{
|
|
|
|
_ackTimeoutEnabled = false;
|
|
|
|
}
|