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Diff: mbedInterface/mbedInterface.cpp
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbedInterface/mbedInterface.cpp Tue May 19 15:45:42 2015 +0000 @@ -0,0 +1,362 @@ +#include "mbedInterface.h" +#include "mbed.h" + + + +//-------------------------------------------------------------- +//-------------------------------------------------------------- +//This section is required for all custom harware interfaces + +//globals defined in hardwareInterface.cpp +extern uint32_t timeKeeper; //the master clock +extern bool resetTimer; +extern bool clockSlave; +extern bool changeToSlave; +extern bool changeToStandAlone; +extern outputStream textDisplay; + +int externalIncrementMod = 30; +int externalIncrementCounter = 0; + + +#ifdef MBED_RF +//Karpova version---------------------------------------- +//Uses DB9->RJ45 connector to map the following channels: +//1: P28 Clock Signal In +//2: P27 Data Signal In +//3: P20 FiberLED Out Signal +//4: 5V +//5: GND +//6: P6 NC +//7: P7 NC +//8: P8 NC + +DigitalOut mainLED(LED1); +DigitalOut secondaryLED(LED2); + +bool lightOn = false; +bool lightOn2 = false; +int pulseCounter = 0; +uint32_t lastPulse = 0; +uint32_t currentRFTime = 0; +uint32_t lastRFTime = 0; +uint32_t timeKeeperAtCurrentRFTime = 0; +uint32_t timeKeeperAtLastRFTime = 0; +int RFSyncCounter = 0; +bool RFSyncReadable = false; +bool RFSyncWritable = true; + +//Recieve clock signal from RF system +InterruptIn RFClock(p28); +DigitalIn RFData(p27); + + +void callback_RFClock(void) { + + //if this amount of time has passed since the last pulse, we have a new timestamp + if ((timeKeeper-lastPulse) > 4) { + + //make sure the previous timestamp was 32 pulses + //if so, update lastRFTime + //we only process every 100th stamp (once every 10 seconds with 10 Hz timestamps) + if ((pulseCounter == 31) && (RFSyncCounter == 99)){ + if (RFSyncWritable) { + lastRFTime = currentRFTime; + timeKeeperAtLastRFTime = timeKeeperAtCurrentRFTime; + RFSyncReadable = true; + RFSyncWritable = false; + } + } + + pulseCounter = 0; + currentRFTime = 0; + timeKeeperAtCurrentRFTime = timeKeeper; + RFSyncCounter = (RFSyncCounter+1)%100; + + + if (lightOn) { + mainLED = 0; + lightOn = false; + } else { + mainLED = 1; + lightOn = true; + } + } else { + if (pulseCounter < 32) { + currentRFTime = (currentRFTime | ( RFData.read() << pulseCounter)); + pulseCounter++; + } + } + lastPulse = timeKeeper; +} + +//------------------------------------------------------------ +#endif + + + +//------------------------------------------------------------------------ +//------------------------------------------------------------------------ + +//MBED-specific stuff +//--------------------------------------------------------------------- + +//translate pin numbers to hardware pins +PinName outPins[NUMPORTS] = {p11,p13,p15,p18,p21,p23,p25,p29,p20}; +PinName inPins[NUMPORTS] = {p12,p14,p16,p17,p22,p24,p26,p30,p7}; + + + +//The sound output uses a SmartWav device and their simple serial library +SMARTWAV sWav(p9,p10,p19); //(TX,RX,Reset); + +//This is the callback for the MBED timer +extern "C" void TIMER0_IRQHandler (void) { + + if((LPC_TIM0->IR & 0x01) == 0x01) { // if MR0 interrupt, proceed + + LPC_TIM0->IR |= 1 << 0; // Clear MR0 interrupt flag + timeKeeper++; + + if (resetTimer) { + timeKeeper = 0; + resetTimer = false; + } + } +} +//----------------------------------------------------------------------- + + + +MBEDSystem::MBEDSystem(): + clockResetInt(p5), + clockExternalIncrement(p8) { + + clockResetInt.rise(this, &MBEDSystem::externalClockReset); + clockResetInt.mode(PullDown); + + clockExternalIncrement.mode(PullDown); + + #ifdef MBED_RF + //Karpova version------------- + //Set up callbacks for RF clock signal + RFClock.rise(&callback_RFClock); + RFClock.mode(PullDown); + #endif + + //------------------------------- + + for (int i=0; i < NUMPORTS; i++) { + dIn[i].init(i); + dOut[i].init(i); + } + + + + sWav.reset(); + +} + +void MBEDSystem::timerinit() { + //intiatiation of timer (specific to the LPC17xx chip). This is used in + //standalone mode to increment the clock every ms. + //---------------------------------------------------- + //LPC_SC->PCLKSEL1 &= (3 << 12); //mask + //LPC_SC->PCLKSEL1 |= (1 << 12); //sets it to 1*SystemCoreClock - table 42 (page 57 in user manual) + //LPC_SC->PCLKSEL0 &= (3 << 3); //mask + //LPC_SC->PCLKSEL0 |= (1 << 3); //sets it to 1*SystemCoreClock - table 42 (page 57 in user manual) + LPC_SC->PCONP |=1<1; //timer0 power on + LPC_TIM0->MR0 = 23980; //1 msec + //LPC_TIM0->PR = (SystemCoreClock / 1000000); //microsecond steps + //LPC_TIM0->MR0 = 1000; //100 msec + //LPC_TIM0->MR0 = (SystemCoreClock / 1000000); //microsecond steps + LPC_TIM0->MCR = 3; //interrupt and reset control + //3 = Interrupt & reset timer0 on match + //1 = Interrupt only, no reset of timer0 + NVIC_EnableIRQ(TIMER0_IRQn); //enable timer0 interrupt + LPC_TIM0->TCR = 1; //enable Timer0 + //-------------------------------------------------------------- +} + +void MBEDSystem::mainLoopToDo() { + #ifdef MBED_RF + //Karpova version-------------------------- + //Karpova lab RF addition. Print out time sync. + if (RFSyncReadable) { + /* + ostringstream RFTimeConvert; + RFTimeConvert << timeKeeperAtLastRFTime << " " << "RFsync " << lastRFTime << " "; //broadcast the earliest timestamp when a change occured + + textDisplay.send(RFTimeConvert.str() + "\r\n"); + RFTimeConvert.clear(); + RFTimeConvert.seekp(0); + */ + + textDisplay << timeKeeperAtLastRFTime << " RFsync " << lastRFTime << "\r\n"; + + RFSyncReadable = false; + RFSyncWritable = true; + } + //------------------------------------------------------------ + #endif +} + +sDigitalOut* MBEDSystem::getDigitalOutPtr(int portNum){ + if (portNum < NUMPORTS) { + return &dOut[portNum]; + } else { + return NULL; + } +} + +sDigitalIn* MBEDSystem::getDigitalInPtr(int portNum) { + if (portNum < NUMPORTS) { + return &dIn[portNum]; + } else { + return NULL; + } +} + +sSound* MBEDSystem::createNewSoundAction() { + MBEDSound *tmpSound = new MBEDSound(); + return tmpSound; +} + + +void MBEDSystem::externalClockReset() { + + if (clockSlave) { + LPC_TIM0->TCR = 0x02; // reset timer + externalIncrementCounter = 0; + immediateClockReset(); + } + +} + +void MBEDSystem::setStandAloneClock() { + timerinit(); + clockExternalIncrement.rise(NULL); //remove the callback to the external interrupt + clockSlave = false; + changeToSlave = false; + changeToStandAlone = false; +} + +void MBEDSystem::setSlaveClock() { + NVIC_DisableIRQ(TIMER0_IRQn); // Disable the interrupt + clockExternalIncrement.rise(this, &MBEDSystem::incrementClock); + clockSlave = true; + changeToSlave = false; + changeToStandAlone = false; +} + +void MBEDSystem::incrementClock() { + + if (clockSlave) { + externalIncrementCounter = (externalIncrementCounter+1) % externalIncrementMod; + if (externalIncrementCounter==0) { + timeKeeper++; + } + + } else { + timeKeeper++; + } + //Clock resets happen upon update so we dont get a partial first ms + if (resetTimer) { + timeKeeper = 0; + resetTimer = false; + } +} + +//----------------------------------------------------- + +MBEDSound::MBEDSound() { + +} + +void MBEDSound::execute() { + if (reset) { + sWav.reset(); + } else if (!play) { + sWav.stopTrack(); + } else { + if (volume > -1) { + sWav.volume(volume); + } else if (volumePtr != NULL) { + sWav.volume(*volumePtr); + } + + if (fileNameExists) { + //sWav.playTracks(); + sWav.stopTrack(); + sWav.playTrackName(fileName); + } + } +} + +//----------------------------------------------------- +MBEDDigitalOut::MBEDDigitalOut() { + +} + +void MBEDDigitalOut::init(int pin) { + outpin = new DigitalOut(outPins[pin]); +} + +int MBEDDigitalOut::read() { + return outpin->read(); +} + +void MBEDDigitalOut::write(int value) { + outpin->write(value); +} +//-------------------------------------------------------- + +MBEDDigitalIn::MBEDDigitalIn() { + +} + +void MBEDDigitalIn::init(int pin) { + inpin = new DigitalIn(inPins[pin]); + inpin_interrupt = new InterruptIn(inPins[pin]); + inpin->mode(PullDown); + //Set up callbacks for the port interrupts + inpin_interrupt->rise(this, &MBEDDigitalIn::interrupt_up_callback); + inpin_interrupt->fall(this, &MBEDDigitalIn::interrupt_down_callback); +} + +int MBEDDigitalIn::read() { + return inpin->read(); +} + +void MBEDDigitalIn::interrupt_up_callback() { + addStateChange(1, timeKeeper); +} + +void MBEDDigitalIn::interrupt_down_callback() { + addStateChange(0, timeKeeper); +} + +//---------------------------------------------------------- +MBEDSerialPort::MBEDSerialPort() { + +} + +void MBEDSerialPort::init() { + //Initialize serial communication + serialToPC = new Serial(USBTX, USBRX); // tx, rx + serialToPC->baud(115200); + + +} + +bool MBEDSerialPort::readable() { + return serialToPC->readable(); +} + +char MBEDSerialPort::readChar() { + return serialToPC->getc(); +} + +void MBEDSerialPort::writeChar(char s) { + serialToPC->printf("%c", s); +}