425 lines
14 KiB
C++
425 lines
14 KiB
C++
#include "hciemulator.h"
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#define CHECKCHANGEDSET(Target,Value,Flag) if((Target)!=(Value)){Target=Value;Flag=true;}
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int hciloglevel = DEFAULTLOGLEVEL;
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#ifdef SOFTSERIAL
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#define Log(Level,Message) LogCore(Level,Message)
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#define Log3(Level,Message,Buffer, Len) LogCore(Level,Message,Buffer,Len)
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//LOGLEVEL
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void LogCore(int Level, const char* msg, const unsigned char * data=NULL, size_t datalen=0){
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if(Level>hciloglevel){
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return;
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}
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if(data!=NULL && datalen>0){
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String newmsg(msg);
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char str[4];
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for (size_t i = 0; i < datalen; i++){
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snprintf(str,sizeof(str),"%02x ", data[i]);
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newmsg+=str;
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}
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Serial.println(newmsg);
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}else{
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Serial.println(msg);
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}
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}
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#else
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#define Log(Level,Message)
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#define Log3(Level,Message,Buffer, Len)
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#endif
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int HCIEmulator::getLogLevel(){
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return hciloglevel;
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}
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void HCIEmulator::setLogLevel(int level){
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hciloglevel=level;
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}
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//modbus crc calculation borrowed from:
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//https://github.com/yaacov/ArduinoModbusSlave
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#define MODBUS_CRC_LENGTH 2
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#define readCRC(arr, length) word(arr[(length - MODBUS_CRC_LENGTH) + 1], arr[length - MODBUS_CRC_LENGTH])
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#define readUInt16(arr, index) word(arr[index], arr[index + 1])
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/**
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* Calculate the CRC of the passed byte array from zero up to the passed length.
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*
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* @param buffer The byte array containing the data.
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* @param length The length of the byte array.
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*
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* @return The calculated CRC as an unsigned 16 bit integer.
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*
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* Calculate and add the CRC.
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* uint16_t crc = Modbus::calculateCRC(_responseBuffer, _responseBufferLength - MODBUS_CRC_LENGTH);
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* _responseBuffer[_responseBufferLength - MODBUS_CRC_LENGTH] = crc & 0xFF;
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* _responseBuffer[(_responseBufferLength - MODBUS_CRC_LENGTH) + 1] = crc >> 8;
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*
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*
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* #define MODBUS_FRAME_SIZE 4
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* #define MODBUS_CRC_LENGTH 2
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* uint16_t crc = readCRC(_requestBuffer, _requestBufferLength);
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* #define readUInt16(arr, index) word(arr[index], arr[index + 1])
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* #define readCRC(arr, length) word(arr[(length - MODBUS_CRC_LENGTH) + 1], arr[length - MODBUS_CRC_LENGTH])
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*/
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uint16_t calculateCRC(uint8_t *buffer, int length)
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{
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int i, j;
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uint16_t crc = 0xFFFF;
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uint16_t tmp;
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// Calculate the CRC.
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for (i = 0; i < length; i++)
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{
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crc = crc ^ buffer[i];
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for (j = 0; j < 8; j++)
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{
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tmp = crc & 0x0001;
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crc = crc >> 1;
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if (tmp)
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{
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crc = crc ^ 0xA001;
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}
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}
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}
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return crc;
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}
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HCIEmulator::HCIEmulator(Stream * port) {
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m_state.valid = false;
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m_statemachine=WAITING;
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m_rxlen = m_txlen = 0;
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m_recvTime=m_lastStateTime=0;
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m_skipFrame=false;
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m_port = port;
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m_statusCallback = NULL;
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setLogLevel(DEFAULTLOGLEVEL);
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};
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void HCIEmulator::poll(){
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if(m_port==NULL) return;
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// receive Data
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if(m_port->available() >0)
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{
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m_rxlen+= m_port->readBytes((char*)(m_rxbuffer+m_rxlen), _min((int)(255-m_rxlen),m_port->available()));
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if(m_rxlen > 254)
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{
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Log(LL_ERROR,"RX Bufferoverflow, skip next Frame");
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Log3(LL_DEBUG,"Buffer Data: ", m_rxbuffer, m_rxlen);
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m_rxlen=0;
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m_skipFrame = true;
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}
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m_recvTime = micros();
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}
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// check frame, process frame
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if(m_rxlen>0 && (micros()-m_recvTime > T3_5))
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{
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// check last action timeout -> reset > then 2sec
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if(m_statemachine!= WAITING && m_lastStateTime+2000<millis()){
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m_statemachine = WAITING;
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}
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if(!m_skipFrame){
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processFrame();
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// send response
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if(m_txlen > 0){
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// fix crc
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uint16_t crc = calculateCRC(m_txbuffer, m_txlen - MODBUS_CRC_LENGTH);
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m_txbuffer[m_txlen - MODBUS_CRC_LENGTH] = crc & 0xFF;
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m_txbuffer[(m_txlen - MODBUS_CRC_LENGTH) + 1] = crc >> 8;
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// send data
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m_lastSendTime = micros()-m_recvTime;
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//Log(LL_DEBUG, ("ST:"+String(m_lastSendTime)).c_str());
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m_port->write(m_txbuffer, m_txlen);
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Log3(LL_DEBUG,"Response: ", m_txbuffer, m_txlen);
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m_txlen = 0;
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}
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}
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m_skipFrame = false;
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m_rxlen=0;
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}
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}
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void HCIEmulator::processFrame(){
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m_txlen = 0; // clear send buffer
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if(m_rxlen<5) {
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Log(LL_ERROR,"Frame skipped, invalid frame len");
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Log3(LL_ERROR,"Data:", m_rxbuffer,m_rxlen);
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return;
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}
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// check device id, pass only device id 2 and 0 (broadcast)
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if(m_rxbuffer[0] != BROADCASTID && m_rxbuffer[0] != DEVICEID){
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Log(LL_DEBUG,"Frame skipped, unsupported device id");
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Log3(LL_DEBUG,"Data:", m_rxbuffer,m_rxlen);
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return;
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}
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// check crc
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uint16_t crc = readCRC(m_rxbuffer, m_rxlen);
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if(crc != calculateCRC(m_rxbuffer,m_rxlen-MODBUS_CRC_LENGTH)){
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Log3(LL_ERROR,"Frame skipped, wrong crc", m_rxbuffer,m_rxlen);
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return;
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}
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Log3(LL_DEBUG,"Incomming Data: ", m_rxbuffer, m_rxlen);
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// dispatch modbus function
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switch(m_rxbuffer[1]){
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case 0x10:{ // Write Multiple registers
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if(m_rxlen == 0x1b && m_rxbuffer[0] == BROADCASTID)
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{
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processBroadcastStatusFrame();
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return;
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}
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break;
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}
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case 0x17:{ // Read/Write Multiple registers
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if(m_rxbuffer[0] == DEVICEID){
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switch(m_rxlen){
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case 0x11:{
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processDeviceStatusFrame();
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return;
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}
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case 0x13:
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processDeviceBusScanFrame();
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return;;
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}
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}
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break;
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}
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}
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Log3(LL_ERROR,"Frame skipped, unexpected data: ", m_rxbuffer, m_rxlen);
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}
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const unsigned char ResponseTemplate_Fcn17_Cmd03_L08 []= {0x02,0x17,0x10,0x3E,0x00,0x03,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x74,0x1B};
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const unsigned char ResponseTemplate_Fcn17_Cmd04_L02 []= {0x02,0x17,0x04,0x0F,0x00,0x04,0xFD,0x0A,0x72};
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void HCIEmulator::processDeviceStatusFrame(){
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if(m_rxlen==0x11){
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unsigned char counter = m_rxbuffer[11];
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unsigned char cmd = m_rxbuffer[12];
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if(m_rxbuffer[5] == 0x08){
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// expose internal state
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// 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16
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//0011: 02 17 9C B9 00 08 9C 41 00 02 04 3E 03 00 00 EB CC
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//res=> 02 17 10 3E 00 03 01 00 00 00 00 00 00 00 00 00 00 00 00 74 1B
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memcpy_P(m_txbuffer, ResponseTemplate_Fcn17_Cmd03_L08, sizeof(ResponseTemplate_Fcn17_Cmd03_L08));
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m_txbuffer[0] = m_rxbuffer[0];
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m_txbuffer[3] = counter;
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m_txbuffer[5] = cmd;
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m_txlen = sizeof(ResponseTemplate_Fcn17_Cmd03_L08);
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switch(m_statemachine)
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{
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// open Door
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case STARTOPENDOOR:
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m_txbuffer[7]= 0x02;
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m_txbuffer[8]= 0x10;
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m_statemachine = STARTOPENDOOR_RELEASE;
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m_lastStateTime = millis();
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break;
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case STARTOPENDOOR_RELEASE:
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if(m_lastStateTime+SIMULATEKEYPRESSDELAYMS<millis()){
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m_txbuffer[7]= 0x01;
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m_txbuffer[8]= 0x10;
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m_statemachine = WAITING;
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}
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break;
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// close Door
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case STARTCLOSEDOOR:
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m_txbuffer[7]= 0x02;
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m_txbuffer[8]= 0x20;
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m_statemachine = STARTCLOSEDOOR_RELEASE;
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m_lastStateTime = millis();
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break;
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case STARTCLOSEDOOR_RELEASE:
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if(m_lastStateTime+SIMULATEKEYPRESSDELAYMS<millis()){
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m_txbuffer[7]= 0x01;
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m_txbuffer[8]= 0x20;
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m_statemachine = WAITING;
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}
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break;
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// stop Door
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case STARTSTOPDOOR:
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m_txbuffer[7]= 0x02;
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m_txbuffer[8]= 0x40;
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m_statemachine = STARTSTOPDOOR_RELEASE;
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m_lastStateTime = millis();
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break;
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case STARTSTOPDOOR_RELEASE:
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if(m_lastStateTime+SIMULATEKEYPRESSDELAYMS<millis()){
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m_txbuffer[7]= 0x01;
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m_txbuffer[8]= 0x40;
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m_statemachine = WAITING;
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}
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break;
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// Ventilation
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case STARTVENTPOSITION:
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m_txbuffer[7]= 0x02;
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m_txbuffer[9]= 0x40;
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m_statemachine = STARTVENTPOSITION_RELEASE;
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m_lastStateTime = millis();
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break;
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case STARTVENTPOSITION_RELEASE:
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if(m_lastStateTime+SIMULATEKEYPRESSDELAYMS<millis()){
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m_txbuffer[7]= 0x01;
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m_txbuffer[9]= 0x40;
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m_statemachine = WAITING;
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}
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break;
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// Half Position
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case STARTOPENDOORHALF:
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m_txbuffer[7]= 0x02;
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m_txbuffer[9]= 0x04;
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m_statemachine = STARTOPENDOORHALF_RELEASE;
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m_lastStateTime = millis();
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break;
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case STARTOPENDOORHALF_RELEASE:
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if(m_lastStateTime+SIMULATEKEYPRESSDELAYMS<millis()){
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m_txbuffer[7]= 0x01;
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m_txbuffer[9]= 0x04;
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m_statemachine = WAITING;
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}
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break;
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// Toggle Lamp
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case STARTTOGGLELAMP:
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m_txbuffer[7]= 0x10;
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m_txbuffer[9]= 0x02;
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m_statemachine = STARTTOGGLELAMP_RELEASE;
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m_lastStateTime = millis();
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break;
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case STARTTOGGLELAMP_RELEASE:
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if(m_lastStateTime+SIMULATEKEYPRESSDELAYMS<millis()){
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m_txbuffer[7]= 0x08;
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m_txbuffer[9]= 0x02;
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m_statemachine = WAITING;
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}
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break;
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case WAITING:
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break;
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}
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return;
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}
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else if(m_rxbuffer[5] == 0x02){
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// 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16
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//0011: 02 17 9C B9 00 02 9C 41 00 02 04 0F 04 17 00 7B 21
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//res=> 02 17 04 0F 00 04 FD 0A 72
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memcpy_P(m_txbuffer, ResponseTemplate_Fcn17_Cmd04_L02, sizeof(ResponseTemplate_Fcn17_Cmd04_L02));
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m_txbuffer[0] = m_rxbuffer[0];
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m_txbuffer[3] = counter;
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m_txbuffer[5] = cmd;
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m_txlen = sizeof(ResponseTemplate_Fcn17_Cmd04_L02);
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return;
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}
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}
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Log3(LL_ERROR,"Frame skipped, unexpected data: ", m_rxbuffer, m_rxlen);
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}
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const unsigned char ResponseTemplate_Fcn17_Cmd02_L05 []= {0x02,0x17,0x0a,0x00,0x00,0x02,0x05,0x04,0x30,0x10,0xff,0xa8,0x45,0x0e,0xdf};
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void HCIEmulator::processDeviceBusScanFrame(){
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// 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16
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//0013: 02 17 9C B9 00 05 9C 41 00 03 06 00 02 00 00 01 02 f8 35
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//res=> 02 17 0a 00 00 02 05 04 30 10 ff a8 45 0e df
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unsigned char counter = m_rxbuffer[11];
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unsigned char cmd = m_rxbuffer[12];
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memcpy_P(m_txbuffer, ResponseTemplate_Fcn17_Cmd02_L05, sizeof(ResponseTemplate_Fcn17_Cmd02_L05));
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m_txbuffer[0] = m_rxbuffer[0];
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m_txbuffer[3] = counter;
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m_txbuffer[5] = cmd;
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m_txlen = sizeof(ResponseTemplate_Fcn17_Cmd02_L05);
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Log(LL_INFO,"Busscan received");
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}
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void HCIEmulator::processBroadcastStatusFrame(){
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//001B: 00 10 9D 31 00 09 12 64 00 00 00 40 60 00 00 00 00 00 00 00 00 00 01 00 00 CA 22
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bool hasChanged = false;
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CHECKCHANGEDSET(m_state.lampOn,m_rxbuffer[20] == 0x14,hasChanged);
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CHECKCHANGEDSET(m_state.doorCurrentPosition,m_rxbuffer[10],hasChanged);
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CHECKCHANGEDSET(m_state.doorTargetPosition, m_rxbuffer[9],hasChanged);
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CHECKCHANGEDSET(m_state.doorState, m_rxbuffer[11],hasChanged);
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CHECKCHANGEDSET(m_state.reserved, m_rxbuffer[17],hasChanged);
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CHECKCHANGEDSET(m_state.valid, true,hasChanged);
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if(hasChanged){
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Log3(LL_INFO,"New State: ",m_rxbuffer,m_rxlen);
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if(m_statusCallback != NULL){
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m_statusCallback(m_state);
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}
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}
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}
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void HCIEmulator::openDoor(){
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if(m_statemachine != WAITING){
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return;
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}
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m_lastStateTime = millis();
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m_statemachine = STARTOPENDOOR;
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}
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void HCIEmulator::openDoorHalf(){
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if(m_statemachine != WAITING){
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return;
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}
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m_lastStateTime = millis();
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m_statemachine = STARTOPENDOORHALF;
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}
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void HCIEmulator::closeDoor(){
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if(m_statemachine != WAITING){
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return;
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}
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m_lastStateTime = millis();
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m_statemachine = STARTCLOSEDOOR;
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}
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void HCIEmulator::stopDoor(){
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if(m_statemachine != WAITING){
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return;
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}
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m_lastStateTime = millis();
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m_statemachine = STARTSTOPDOOR;
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}
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void HCIEmulator::toggleLamp(){
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if(m_statemachine != WAITING){
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return;
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}
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m_lastStateTime = millis();
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m_statemachine = STARTTOGGLELAMP;
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}
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void HCIEmulator::ventilationPosition(){
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if(m_statemachine != WAITING){
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return;
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}
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m_lastStateTime = millis();
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m_statemachine = STARTVENTPOSITION;
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}
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void HCIEmulator::onStatusChanged(callback_function_t handler) {
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m_statusCallback = handler;
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} |