void FLOPPY_OnInterrupt(void) {
int i;
for(i=0;i<FLOPPY_NOF_DRIVES;i++) {
if (FLOPPY_Drives[i].currentPeriod>0) { /* not disabled */
FLOPPY_Drives[i].currentTick++; /* increment tick */
if (FLOPPY_Drives[i].currentTick>=FLOPPY_Drives[i].currentPeriod) { /* check if expired */
FLOPPY_Drives[i].StepSetVal(); /* toggle pin ==> High */
FLOPPY_Drives[i].currentTick = 0; /* reset tick counter */
/* change direction if end has been reached */
if (FLOPPY_Drives[i].pos==FLOPPY_MAX_STEPS) {
FLOPPY_SetDirection(&FLOPPY_Drives[i], FALSE); /* go backward */
} else if (FLOPPY_Drives[i].pos==0) {
FLOPPY_SetDirection(&FLOPPY_Drives[i], TRUE); /* go forward */
}
if (FLOPPY_Drives[i].forward) {
FLOPPY_Drives[i].pos++;
} else {
FLOPPY_Drives[i].pos--;
}
WAIT1_Waitus(1);
FLOPPY_Drives[i].StepClearVal(); /* toggle pin ==> Low */
}
}
}
}
uint16_t SOCK_Recv(uint8_t sock, uint8_t *buf, uint16_t buflen) {
uint16_t offaddr, realaddr;
if (buflen<=0 || sock!=0) {
return 1;
}
/* If the request size > MAX_BUF,just truncate it */
if (buflen>W5100_MAX_BUF) {
buflen = W5100_MAX_BUF-2;
}
/* Read the Rx Read Pointer */
W5100_MemReadWord(W5100_S0_RX_RD, &offaddr);
#if _DEBUG_MODE
printf("RX Buffer: %x\n",offaddr);
#endif
while (buflen) {
buflen--;
realaddr = W5100_RXBUFADDR+(offaddr&W5100_RX_BUF_MASK);
W5100_MemWriteByte(realaddr, *buf);
offaddr++;
buf++;
}
*buf='\0'; /* String terminated character */
/* Increase the S0_RX_RD value, so it point to the next receive */
W5100_MemWriteWord(W5100_S0_RX_RD, offaddr);
/* Now Send the RECV command */
W5100_MemWriteByte(W5100_S0_CR, W5100_CR_RECV);
WAIT1_Waitus(5); // Wait for Receive Process
return 1;
}
uint8_t SOCK_Receive(uint8_t sock, uint8_t *buf, size_t bufSize, size_t readSize) {
uint16_t offaddr, realaddr;
uint16_t sockaddr;
if (readSize<=0 || sock>=W5100_NUM_SOCKETS) {
return ERR_VALUE; /* failure */
}
if (readSize>bufSize) { /* If the requested size > MAX_BUF, just truncate it */
readSize = bufSize-2;
}
sockaddr = W5100_SKT_BASE(sock);
/* Read the Rx Read Pointer */
W5100_MemReadWord(sockaddr+W5100_RX_RD_OFFSET, &offaddr);
while (readSize) {
readSize--;
realaddr = (W5100_RXBUFADDR + (0x0800*sock))+(offaddr&W5100_RX_BUF_MASK);
W5100_MemReadByte(realaddr, buf);
offaddr++;
buf++;
}
*buf='\0'; /* string terminated character */
/* Increase the S0_RX_RD value, so it point to the next receive */
W5100_MemWriteWord(sockaddr+W5100_RX_RD_OFFSET, offaddr);
/* Now Send the RECV command */
W5100_MemWriteByte(sockaddr+W5100_CR_OFFSET, W5100_CR_RECV);
WAIT1_Waitus(5); /* Wait for Receive Process */
return ERR_OK;
}
uint8_t FLOPPY_Steps(FLOPPY_DriveHandle drive, int steps) {
if (steps>=0) {
FLOPPY_SetDirection(drive, TRUE); /* go forward */
} else if (steps<0) {
FLOPPY_SetDirection(drive, FALSE); /* go backward */
}
while(steps!=0) {
if (drive->pos==FLOPPY_MAX_STEPS) {
FLOPPY_SetDirection(drive, FALSE); /* go backward */
} else if (drive->pos==0) {
FLOPPY_SetDirection(drive, TRUE); /* go forward */
}
/* do a step */
drive->StepSetVal();
WAIT1_Waitus(5);
drive->StepClearVal();
if (steps>0) {
steps--;
} else {
steps++;
}
if (drive->forward) {
drive->pos++;
} else {
drive->pos--;
}
vTaskDelay(pdMS_TO_TICKS(5));
} /* while */
return ERR_OK;
}
static void REF_MeasureRaw(SensorTimeType raw[NOF_SENSORS]) {
uint8_t cnt; /* number of sensor */
uint8_t i;
TMOUT1_CounterHandle timeout;
FRTOS1_xSemaphoreTake(mutexHandle, portMAX_DELAY);
if (ledON) {
LED_IR_On(); /* IR LED's on */
WAIT1_Waitus(200);
}
for(i=0;i<NOF_SENSORS;i++) {
SensorFctArray[i].SetOutput(); /* turn I/O line as output */
SensorFctArray[i].SetVal(); /* put high */
raw[i] = MAX_SENSOR_VALUE;
}
WAIT1_Waitus(20); /* give at least 10 us to charge the capacitor */
timeout = TMOUT1_GetCounter(20/TMOUT1_TICK_PERIOD_MS); /* set up timeout counter */
FRTOS1_vTaskSuspendAll();
(void)TU1_ResetCounter(timerHandle); /* reset timer counter */
for(i=0;i<NOF_SENSORS;i++) {
SensorFctArray[i].SetInput(); /* turn I/O line as input */
}
do {
cnt = 0;
if (TMOUT1_CounterExpired(timeout)) {
break; /* get out of wile loop */
}
for(i=0;i<NOF_SENSORS;i++) {
if (raw[i]==MAX_SENSOR_VALUE) { /* not measured yet? */
if (SensorFctArray[i].GetVal()==0) {
raw[i] = TU1_GetCounterValue(timerHandle);
}
} else { /* have value */
cnt++;
}
}
} while(cnt!=NOF_SENSORS);
TMOUT1_LeaveCounter(timeout);
FRTOS1_xTaskResumeAll();
if (ledON) {
LED_IR_Off(); /* IR LED's off */
WAIT1_Waitus(200);
}
FRTOS1_xSemaphoreGive(mutexHandle);
}
/*!
* \brief Measures the time until the sensor discharges
* \param raw Array to store the raw values.
* \return ERR_OVERFLOW if there is a timeout, ERR_OK otherwise
*/
static void REF_MeasureRaw(SensorTimeType raw[REF_NOF_SENSORS]) {
uint8_t cnt; /* number of sensor */
uint8_t i;
RefCnt_TValueType timerVal;
LED_IR_On(); /* IR LED's on */
WAIT1_Waitus(200);
for(i=0;i<REF_NOF_SENSORS;i++) {
SensorFctArray[i].SetOutput(); /* turn I/O line as output */
SensorFctArray[i].SetVal(); /* put high */
raw[i] = MAX_SENSOR_VALUE;
}
WAIT1_Waitus(50); /* give at least 10 us to discharge the capacitor */
for(i=0;i<REF_NOF_SENSORS;i++) {
SensorFctArray[i].SetInput(); /* turn I/O line as input */
}
FRTOS1_taskENTER_CRITICAL();
(void)RefCnt_ResetCounter(timerHandle); /* reset timer counter */
do {
cnt = 0;
timerVal = RefCnt_GetCounterValue(timerHandle);
for(i=0;i<REF_NOF_SENSORS;i++) {
if (raw[i]==MAX_SENSOR_VALUE) { /* not measured yet? */
if ((SensorFctArray[i].GetVal()==0)){// || (timerVal > 0x2000)) {
raw[i] = timerVal;
}
}
else { /* have value */
cnt++;
}
}
if (timerVal > 0x3000){ //9375) {/*5ms*/
for(i=0;i<REF_NOF_SENSORS;i++) {
if (raw[i]==MAX_SENSOR_VALUE) { /* not measured yet? */
raw[i] = timerVal;
}
}
break;
}
} while(cnt!=REF_NOF_SENSORS);
FRTOS1_taskEXIT_CRITICAL();
LED_IR_Off(); /* IR LED's off */
}
static void REF_MeasureRaw(SensorTimeType raw[REF_NOF_SENSORS]) {
uint8_t cnt; /* number of sensor */
uint8_t i;
LED_IR_On(); /* IR LED's on */
WAIT1_Waitus(200); /*! \todo adjust time as needed */
for(i=0;i<REF_NOF_SENSORS;i++) {
SensorFctArray[i].SetOutput(); /* turn I/O line as output */
SensorFctArray[i].SetVal(); /* put high */
raw[i] = MAX_SENSOR_VALUE;
}
WAIT1_Waitus(50); /* give some time to charge the capacitor */
(void)RefCnt_ResetCounter(timerHandle); /* reset timer counter */
for(i=0;i<REF_NOF_SENSORS;i++) {
SensorFctArray[i].SetInput(); /* turn I/O line as input */
}
int cntTimeOUt = 0;
do {
cnt = 0;
for(i=0;i<REF_NOF_SENSORS;i++) {
if (raw[i]==MAX_SENSOR_VALUE) { /* not measured yet? */
if (SensorFctArray[i].GetVal()==0) {
FRTOS1_taskENTER_CRITICAL();
raw[i] = RefCnt_GetCounterValue(timerHandle);
FRTOS1_taskEXIT_CRITICAL();
}
cntTimeOUt++;
if(cntTimeOUt >= 50*REF_NOF_SENSORS){
return;
}
} else { /* have value */
cnt++;
}
}
} while(cnt!=REF_NOF_SENSORS);
LED_IR_Off();
}
byte read_dht11_dat() {
byte j = 0;
byte result = 0;
for (j = 0; j < 8; j++) {
while (!DHT_GetVal());//while (!(PINC & _BV(DHT11_PIN))); // wait for 50us
WAIT1_Waitus(30);//delayMicroseconds(30);
if (DHT_GetVal())//if (PINC & _BV(DHT11_PIN))
{
result |= (1 << (7 - j));
while (DHT_GetVal());//while ((PINC & _BV(DHT11_PIN))); // wait '1' finish
}
}
return result;
}
void TFC_TAOS_READ(void)
{
int i=0;
TFC_TSI_SetVal();
TFC_TCLK_SetVal();
WAIT1_Waitus(1);
TFC_TSI_ClrVal();
TFC_TCLK_ClrVal();
for(i=0;i<127;i++){
TFC_TCLK_SetVal();
TFC_ADCI_MeasureChan(FALSE,TAOS_1);
TFC_TCLK_ClrVal();
TFC_ADCI_GetChanValue16(TAOS_1,&TAOS_VAL[i]);
}
}
/* measure and return the microseconds */
uint16_t US_Measure_us(void) {
/* send 10us pulse on TRIG line. */
TRIG_SetVal(usDevice.trigDevice);
WAIT1_Waitus(10);
usDevice.state = ECHO_TRIGGERED;
TRIG_ClrVal(usDevice.trigDevice);
while(usDevice.state!=ECHO_FINISHED) {
/* measure echo pulse */
if (usDevice.state==ECHO_OVERFLOW) { /* measurement took too long? */
usDevice.state = ECHO_IDLE; /* go back to idle */
return 0; /* no echo, error case */
}
}
usDevice.lastValue_us = (usDevice.capture*1000UL)/(TU_US_CNT_INP_FREQ_U_0/1000);
return usDevice.lastValue_us;
}
/*
** ===================================================================
** Method : GI2C1_ProbeACK (component GenericI2C)
** Description :
** Accesses the bus to check if the device responds with an ACK
** (ACK polling).
** Parameters :
** NAME - DESCRIPTION
** * data - Data write buffer
** dataSize -
** flags - flags for the transaction
** WaitTimeUS - Waiting time in microseconds
** to wait for the ACK on the bus.
** Returns :
** --- - Error code
** ===================================================================
*/
byte GI2C1_ProbeACK(void* data, word dataSize, GI2C1_EnumSendFlags flags, word WaitTimeUS)
{
byte res = ERR_OK;
GI2C1_deviceData.dataTransmittedFlg = FALSE;
res = CI2C1_MasterSendBlock(GI2C1_deviceData.handle, data, dataSize, flags==GI2C1_SEND_STOP?LDD_I2C_SEND_STOP:LDD_I2C_NO_SEND_STOP);
if (res!=ERR_OK) {
return res;
}
/*lint -save -e522 Lacks side effect */
WAIT1_Waitus(WaitTimeUS);
/*lint -restore */
if (!GI2C1_deviceData.dataTransmittedFlg) {
return ERR_FAILED; /* no ACK received? */
}
return res;
}
int send_msg(byte * pBuffer,int length)
{
int k = 0;
SS_PutVal(NULL,0);
WAIT1_Waitus(8);
for(k=0;k<length;k++){
SM3_SendChar(pBuffer[k]);
}
SS_PutVal(NULL,1);
memset(pBuffer,0,length);
reset_interrupt();
return MAIN_SUCCESS;
}
// send 12-bit number in Manchester code.
void manchester_send(uint16_t t) {
int mask = 0x800;
// int ones = 0;
manchester_send_bit(0); /* bit de preambule */
WAIT1_Waitus(HALF_BIT);
//delayMicroseconds(HALF_BIT);
for (int i = 0; i < 12; ++i) {
int bit = !! (t & mask);
manchester_send_bit(bit);
mask >>= 1;
// if (bit == 1) {
// ones ++;
// } else {
// ones = 0;
// }
// if (ones == 2) {
// manchester_send_bit(0);
// ones = 0;
// }
}
// if (ones > 0) {
// manchester_send_bit(0);
// }
}
/*lint -save -e970 Disable MISRA rule (6.3) checking. */
int main(void)
/*lint -restore Enable MISRA rule (6.3) checking. */
{
/* Write your local variable definition here */
uint16_t sensorsVector[NUMBER_OF_SENSORS];
/* variables needed for deciding which direction it should turn more */
uint16_t robotTurnsRightMotor;
uint16_t robotTurnsLeftMotor;
/* in case of a white detection - it may be that simply the robot got completely
* out of the track - but it should get back to the truck in case it was
* just loosing a bit the track
*/
uint16_t flagStopWhite;
/* correction algorith will relay on counting how bad
* the curve (error), figuring out how many times the
* sensor is activated
*/
uint16_t correctionS1;
uint16_t correctionS2;
uint16_t i; // for serial debug only
flagStopWhite=0;
/* initialize the correction counters
* they follow how often in a loop cycle the error appears
*/
correctionS1 = 0;
correctionS2 = 0;
/*** Processor Expert internal initialization. DON'T REMOVE THIS CODE!!! ***/
PE_low_level_init();
/*** End of Processor Expert internal initialization. ***/
/* Write your code here */
initializePlatform();
/* Wait for a button press before doing anything*/
while(Button_GetVal()) {}
while (1)
{
/* Read the input sensors */
readSensors(sensorsVector);
robotTurnsLeftMotor = sensorsVector[0] + sensorsVector[1] + sensorsVector[2];
robotTurnsRightMotor = sensorsVector[3] + sensorsVector [4] + sensorsVector[5];
#if 1
for (i = 0; i < NUMBER_OF_SENSORS; i++)
{
Term2_SendNum(sensorsVector[i]);
Term2_SendChar(' ');
}
Term2_SendChar('R');
Term2_SendChar('=');
Term2_SendNum(robotTurnsRightMotor);
Term2_SendChar(' ');
Term2_SendChar('L');
Term2_SendChar('=');
Term2_SendNum(robotTurnsLeftMotor);
Term2_CRLF();
//setRightMotorSpeed(FULL_SPEED);
//setLeftMotorSpeed(FULL_SPEED);
/* motor right turns faster case robot turns left as issue is on the left side */
if (robotTurnsRightMotor > robotTurnsLeftMotor){
/* if last sensor is seeing the black line
* is pretty bad so speed has to be pretty high
* also if situation repeats correction must be more dramatic
* */
if (sensorsVector[0]==0 && sensorsVector[1]!= 0){
if(correctionS1 < TOLERANCE_S1)
correctionS1= correctionS1 + CORRECTION_STEP_S1;
setRightMotorSpeed(FULL_SPEED);
setRightMotorSpeed(SPEED_MOTOR_S1_HIGH_REFERENCE + correctionS1);
setLeftMotorSpeed(SPEED_MOTOR_S1_LOW_REFERENCE - correctionS1);
/* clean up correction flag for RS2*/
WAIT1_Waitus(WAIT_SENSORS_1);
correctionS2 = 0;
}
/* the case in which second sensor sees black line
* less critical but also with potential of becoming an
* issue
*/
else if( sensorsVector[1]==0){
if(correctionS2 < TOLERANCE_S2)
correctionS2 = correctionS2 + CORRECTION_STEP_S2;
setRightMotorSpeed(SPEED_MOTOR_S2_HIGH_REFERENCE + correctionS2);
setLeftMotorSpeed(SPEED_MOTOR_S2_LOW_REFERENCE - correctionS2);
/* clean up the correction flag for RS1 */
correctionS1 = 0;
WAIT1_Waitus(WAIT_SENSORS_2);
}
flagStopWhite=0;
}
/* motor left turns robot goes to right as issue is on the right side */
if ( robotTurnsLeftMotor > robotTurnsRightMotor){
/* if last sensor is seeing the black line
* is pretty bad so speed has to be pretty high
* also if situation repeats correction must be more dramatic
*/
if (sensorsVector[5]==0 && sensorsVector[4]!=0){
if(correctionS1 < TOLERANCE_S1)
correctionS1= correctionS1 + CORRECTION_STEP_S1;
setRightMotorSpeed(SPEED_MOTOR_S1_LOW_REFERENCE - correctionS1);
setLeftMotorSpeed(SPEED_MOTOR_S1_HIGH_REFERENCE + correctionS1);
/* clean up correction flag for S2*/
WAIT1_Waitus(WAIT_SENSORS_1);
correctionS2 = 0;
}
/* the case in which second sensor sees black line
* less critical but also with potential of becoming an
* issue
*/
else if (sensorsVector[4]==0){
if(correctionS2 < TOLERANCE_S2)
correctionS2 = correctionS2 + CORRECTION_STEP_S2;
setRightMotorSpeed(SPEED_MOTOR_S2_LOW_REFERENCE - correctionS2);
setLeftMotorSpeed(SPEED_MOTOR_S2_HIGH_REFERENCE + correctionS2);
/* clean up the correction flag for RS1 */
correctionS1 = 0;
WAIT1_Waitus(WAIT_SENSORS_2);
}
flagStopWhite=0;
}
//case line is correctly read and it should move full speed
if(robotTurnsRightMotor!=0 && robotTurnsLeftMotor != 0 && sensorsVector[2]==0 && sensorsVector[3]==0){
if(robotTurnsRightMotor==robotTurnsLeftMotor && robotTurnsRightMotor== 2){
setRightMotorSpeed(FULL_SPEED);
setLeftMotorSpeed (FULL_SPEED);
WAIT1_Waitus(WAIT_NORMAL);
correctionS1 = 0;
correctionS2 = 0;
flagStopWhite=0;
}
}
//case when it is on the black it also stops
if (robotTurnsRightMotor==0 && robotTurnsLeftMotor == 0 ){
setRightMotorSpeed(0);
setLeftMotorSpeed (0);
correctionS1 = 0;
correctionS2 = 0;
flagStopWhite=0;
}
// case when it is on white board not sensor read black it stops
if (robotTurnsRightMotor==3 && robotTurnsLeftMotor == 3 ){
if(flagStopWhite==TIME_TO_STOP_ON_WHITE){
setRightMotorSpeed(0);
setLeftMotorSpeed (0);
}
else{
flagStopWhite++;
WAIT1_Waitus(WAIT_NORMAL);
}
}
#endif
}
/*** Don't write any code pass this line, or it will be deleted during code generation. ***/
/*** RTOS startup code. Macro PEX_RTOS_START is defined by the RTOS component. DON'T MODIFY THIS CODE!!! ***/
#ifdef PEX_RTOS_START
PEX_RTOS_START(); /* Startup of the selected RTOS. Macro is defined by the RTOS component. */
#endif
/*** End of RTOS startup code. ***/
/*** Processor Expert end of main routine. DON'T MODIFY THIS CODE!!! ***/
for(;;){}
/*** Processor Expert end of main routine. DON'T WRITE CODE BELOW!!! ***/
} /*** End of main routine. DO NOT MODIFY THIS TEXT!!! ***/
static uint8_t Transfer(uint32_t dataAddress, size_t nofBytes) {
static const uint8_t OneValue = 0xFF; /* value to clear or set the port bits */
TMOUT1_CounterHandle handle;
bool isTimeout;
uint32_t done0, done1, done2;
/* clear any pending done flags for DMA channels */
DMA_PDD_ClearDoneFlag(DMA_BASE_PTR, DMA_PDD_CHANNEL_0);
DMA_PDD_ClearDoneFlag(DMA_BASE_PTR, DMA_PDD_CHANNEL_1);
DMA_PDD_ClearDoneFlag(DMA_BASE_PTR, DMA_PDD_CHANNEL_2);
/* set DMA source addresses */
DMA_PDD_SetSourceAddress(DMA_BASE_PTR, DMA_PDD_CHANNEL_0, (uint32_t)&OneValue); /* set source address */
DMA_PDD_SetSourceAddress(DMA_BASE_PTR, DMA_PDD_CHANNEL_1, dataAddress); /* set source address */
DMA_PDD_SetSourceAddress(DMA_BASE_PTR, DMA_PDD_CHANNEL_2, (uint32_t)&OneValue); /* set source address */
/* set byte count addresses */
DMA_PDD_SetByteCount(DMA_BASE_PTR, DMA_PDD_CHANNEL_0, nofBytes); /* set number of bytes to transfer */
DMA_PDD_SetByteCount(DMA_BASE_PTR, DMA_PDD_CHANNEL_1, nofBytes); /* set number of bytes to transfer */
DMA_PDD_SetByteCount(DMA_BASE_PTR, DMA_PDD_CHANNEL_2, nofBytes); /* set number of bytes to transfer */
/* reset TPM counter */
TPM_PDD_InitializeCounter(TPM0_DEVICE); /* reset timer counter */
TPM_PDD_ClearChannelFlags(TPM0_DEVICE, 0x00);
TPM_PDD_ClearOverflowInterruptFlag(TPM0_DEVICE);
/* re-enable DMA Muxing: it will disabled at the end of the transfer */
DMAMUX_PDD_EnableChannel(DMAMUX0_BASE_PTR, 0, PDD_ENABLE);
DMAMUX_PDD_EnableChannel(DMAMUX0_BASE_PTR, 1, PDD_ENABLE);
DMAMUX_PDD_EnableChannel(DMAMUX0_BASE_PTR, 2, PDD_ENABLE);
/* enable DMA peripheral requests */
DMA_PDD_EnablePeripheralRequest(DMA_BASE_PTR, DMA_PDD_CHANNEL_2, PDD_ENABLE); /* enable request from peripheral */
DMA_PDD_EnablePeripheralRequest(DMA_BASE_PTR, DMA_PDD_CHANNEL_1, PDD_ENABLE); /* enable request from peripheral */
DMA_PDD_EnablePeripheralRequest(DMA_BASE_PTR, DMA_PDD_CHANNEL_0, PDD_ENABLE); /* enable request from peripheral */
/* clear timer flags and status so it starts from a clean starting point */
TPM_PDD_ClearChannelFlags(TPM0_DEVICE, 0x00);
TPM_PDD_ClearOverflowInterruptFlag(TPM0_DEVICE);
/* enable TPM DMA */
TPM_PDD_WriteStatusControlReg(TPM0_DEVICE,TPM_PDD_ReadStatusControlReg(TPM0_DEVICE)|TPM_SC_DMA_MASK);
TPM_PDD_EnableChannelDma(TPM0_DEVICE, 1);
TPM_PDD_EnableChannelDma(TPM0_DEVICE, 0);
/* start the TPM timer */
StartTimer();
isTimeout = FALSE;
handle = TMOUT1_GetCounter(100/TMOUT1_TICK_PERIOD_MS);
for(;;) {
/* wait until transfer is complete */
if (TMOUT1_CounterExpired(handle)) {
isTimeout = TRUE;
break; /* leave loop */
}
done0 = DMA_PDD_GetDoneFlag(DMA_BASE_PTR, DMA_PDD_CHANNEL_0);
done1 = DMA_PDD_GetDoneFlag(DMA_BASE_PTR, DMA_PDD_CHANNEL_1);
done2 = DMA_PDD_GetDoneFlag(DMA_BASE_PTR, DMA_PDD_CHANNEL_2);
if (done0 && done1 && done2) {
break; /* done! */
}
WAIT1_WaitOSms(1); /* give back some time */
}
TMOUT1_LeaveCounter(handle);
WAIT1_Waitus(50); /* latch, low for at least 50 us (40x1.25us) */
/* disable DMA-Muxing: necessary, otherwise DMA events on TPM0 channel 0 might be still latched.
* Will enable muxing for next transfer */
DMAMUX_PDD_EnableChannel(DMAMUX0_BASE_PTR, 0, PDD_DISABLE);
DMAMUX_PDD_EnableChannel(DMAMUX0_BASE_PTR, 1, PDD_DISABLE);
DMAMUX_PDD_EnableChannel(DMAMUX0_BASE_PTR, 2, PDD_DISABLE);
/* disable peripheral DMA */
TPM_PDD_WriteStatusControlReg(TPM0_DEVICE,TPM_PDD_ReadStatusControlReg(TPM0_DEVICE)&(~TPM_SC_DMA_MASK));
TPM_PDD_DisableChannelDma(TPM0_DEVICE, 1);
TPM_PDD_DisableChannelDma(TPM0_DEVICE, 0);
StopTimer(); /* stop TPM */
if (isTimeout) {
return ERR_BUSY;
}
return ERR_OK;
}
/* write a byte to the PS2 device */
void PS2_write(unsigned char data)
{
unsigned char i;
unsigned char parity = 1;
FRTOS1_taskENTER_CRITICAL();
BitClock_SetDir((bool)INPUT);
BitData_SetDir((bool)INPUT);
WAIT1_Waitus(100);
// Poner el bus en el modo Request to Send (petición de envío), para ello primero debe
//inhibir la comunicación llevando
//la línea de PS2_PIN_clock a “0” por al menos 100 microsegundos
//El protocolo dice por lo menos 100 ms
//PS2_PIN_data = high, PS2_PIN_clock = low: Communication Inhibited.
BitClock_SetDir((bool)OUTPUT);
BitClock_ClrVal();
WAIT1_Waitus(100);
//Se lleva al bus al estado de Request to Send poniendo la línea PS2_PIN_data en “bajo”
//y liberando la línea PS2_PIN_clock (estado “alto”)
//PS2_PIN_data = low, PS2_PIN_clock = high: Host Request-to-Send
BitData_SetDir((bool)OUTPUT);
BitData_ClrVal();
WAIT1_Waitus(10);
//Se libera la linea PS2_PIN_clock
BitClock_SetDir((bool)INPUT);
//Se espera a que el mouse tome el control y nos de el tren de pulsos
//El Mouse va a leer cuando el PS2_PIN_clock este en alto
//Cuando el mouse detecte este estado comenzará a enviar pulsos de reloj
while (BitClock_GetVal() == 1U);
//El host cambia los datos cuando la línea PS2_PIN_clock esta en “bajo”
//y el mouse los lee cuando PS2_PIN_clock está en “alto”
for (i=0; i < 8; i++)
{
if (data & 0x01)
{
BitData_SetDir((bool)INPUT); //Si el bit es un 1 se pone un 1 en el bus de datos
} else {
BitData_SetDir((bool)OUTPUT);
BitData_ClrVal(); //Si el bit es un 0 se pone un 0 en el bus de datos
}
//Hay que esperar que el clk se ponga en alto que es cuando
//el reloj va a leer el dato
while (BitClock_GetVal() == 0U);
//Hay que esperar que esperar que el clk se vuelva a poner en bajo
//para enviar
while (BitClock_GetVal() == 1U);
parity = parity ^ (data & 0x01);
data = data >> 1;
}
//Luego de mandar los datos, se envia el bit de paridad
if (parity)
{
BitData_SetDir((bool)INPUT);
} else {
BitData_SetDir((bool)OUTPUT);
BitData_ClrVal();
}
//Se espera a que el ckl lea el bit de paridad
while (BitClock_GetVal() == 0U);
//Se espera a que baje el pulso
while (BitClock_GetVal() == 1U);
//Se libera el bus de datos
BitData_SetDir((bool)INPUT);
WAIT1_Waitus(50);
//Esperar a que se ponga en bajo el ckl
while (BitClock_GetVal() == 1U);
//Esperar a que se liberen el bus de datos y clk
while ((BitClock_GetVal() == 0U) || (BitData_GetVal() == 0U));
//Poner en espera los datos entrantes
BitClock_SetDir((bool)OUTPUT);
BitClock_ClrVal();
FRTOS1_taskEXIT_CRITICAL();
}
void readSensors(uint16_t sensorsValue[NUMBER_OF_SENSORS]){
/*used for reading how long it take for the line to fall to 0
*and this way detecting the black or white level
*/
uint16_t counterReadValue;
uint16_t i;
/* start the infrared LED */
IR_LED_SetVal();
// WAIT1_Waitus(USEC_WAITING_INFRARED_LED_TO_START);
/* init the vector to reflecting by default
* it will be populated with values in case reflection is discovered
* - just a convention 0 means black and 1 means white */
for (i=0;i<NUMBER_OF_SENSORS;i++){
sensorsValue[i]=0;
}
/* set sensors as output and put them into 1 */
LS1_SetDir(TRUE);
LS1_SetVal();
A1_SetDir(TRUE);
A1_SetVal();
LS2_SetDir(TRUE);
LS2_SetVal();
LS3_SetDir(TRUE);
LS3_SetVal();
RS3_SetDir(TRUE);
RS3_SetVal();
RS2_SetDir(TRUE);
RS2_SetVal();
RS1_SetDir(TRUE);
RS1_SetVal();
/* wait until sensors capacitor is fully up */
WAIT1_Waitus(USEC_WAITING_FOR_CAPACITOR_TO_CHARGE);
/* set all sensors as inputs to read them */
LS1_SetDir(FALSE);
LS2_SetDir(FALSE);
LS3_SetDir(FALSE);
RS3_SetDir(FALSE);
RS2_SetDir(FALSE);
RS1_SetDir(FALSE);
/* read the time needed for the value of the sensor line to reach 0
* the longer it takes the less light it is reflected
*/
/* reset of the counter (using periods of 6.1 usec) used to count time
* sensor needs till it line is falling to 0
*/
CountTimer_ResetCounter((LDD_TDeviceData *)NULL);
/* effective reading of the value of the line + decision if it is black or white
* the sensor is seeing
*/
counterReadValue = CountTimer_GetCounterValue((LDD_TDeviceData *)NULL);
while (counterReadValue < BLACK_OR_WHITE_BOUNDRY){
/* do nothing wait till enough time has passed
* after this time has passed the sensors should be
* in correct shape */
counterReadValue = CountTimer_GetCounterValue((LDD_TDeviceData *)NULL);
}
/* basically if level did not reach 0 which means it is black
* and that is recorded in the sensors vector with a value of 1
* a bit tricky and maybe confusing here are they are opposite */
if(LS1_GetVal()==0){
sensorsValue[0] = 1;
}
if(LS2_GetVal()==0){
sensorsValue[1] = 1;
}
if(LS3_GetVal()==0){
sensorsValue[2] = 1;
}
if(RS3_GetVal()==0){
sensorsValue[3] = 1;
}
if(RS2_GetVal()==0){
sensorsValue[4] = 1;
}
if(RS1_GetVal()==0){
sensorsValue[5] = 1;
}
/* shut down the LED emitting infrared - need to see if this step is needed
* here decision taken not to shut down the sensor
* */
// IR_LED_ClrVal();
}
int Read(uint8_t *temp, uint8_t *humi) {
int cntr;
int loopBits;
uint8_t buffer[5];
int i;
int data;
/* init buffer */
for (i = 0; i < sizeof(buffer); i++) {
buffer[i] = 0;
}
//set to input and check if the signal gets pulled up
DHT_SetInput();
WAIT1_Waitus(50);
if (DHT_GetVal() == 0) {
return NO_PULLUP;
}
// send start signal
DHT_SetOutput();
DHT_ClrVal();
WAIT1_Waitms(18); /* keep signal low for at least 18 ms */
DHT_SetInput();
WAIT1_Waitus(50);
/* check for acknowledge signal */
if (DHT_GetVal() != 0) { /* signal must be pulled low by the sensor */
return NO_ACK_0;
}
/* wait max 90 us for the ack signal from the sensor */
cntr = 18;
while (DHT_GetVal() == 0) { /* wait until signal goes up */
WAIT1_Waitus(5);
if (--cntr == 0) {
return NO_ACK_1; /* signal should be up for the ACK here */
}
}
/* wait until it goes down again, end of ack sequence */
cntr = 18;
while (DHT_GetVal() != 0) { /* wait until signal goes down */
WAIT1_Waitus(5);
if (--cntr == 0) {
return NO_ACK_0; /* signal should be down to zero again here */
}
}
/* now read the 40 bit data */
i = 0;
data = 0;
loopBits = 40;
do {
cntr = 11; /* wait max 55 us */
while (DHT_GetVal() == 0) {
WAIT1_Waitus(5);
if (--cntr == 0) {
return NO_DATA_0;
}
}
cntr = 5; /* wait max 75 us */
while (DHT_GetVal() != 0) {
WAIT1_Waitus(15);
if (--cntr == 0) {
return NO_DATA_1;
}
}
data <<= 1; /* next data bit */
if (cntr < 3) { /* data signal high > 40 us ==> data bit 1 */
data |= 1;
}
if ((loopBits & 0x7) == 1) { /* next byte */
buffer[i] = data;
i++;
data = 0;
}
} while (--loopBits != 0);
/* now we have the 40 bit (5 bytes) data:
* byte 1: humidity integer data
* byte 2: humidity decimal data (not used for DTH11, always zero)
* byte 3: temperature integer data
* byte 4: temperature fractional data (not used for DTH11, always zero)
* byte 5: checksum, the sum of byte 1 + 2 + 3 + 4
*/
/* test CRC */
if (buffer[0] + buffer[1] + buffer[2] + buffer[3] != buffer[4]) {
return BAD_CRC;
}
/* store data values for caller */
*humi = ((int) buffer[0]);
*temp = ((int) buffer[2]);
return OK;
}
void DHT11() {
byte dht11_dat[5];
byte dht11_in;
byte i;
// output
DHT_SetDir(1);
// pull-down i/o pin for 18ms
DHT_ClrVal();
WAIT1_Waitms(19);
DHT_SetVal();
//pull-up i/o pin for 30ms
WAIT1_Waitus(30);
//input
DHT_SetDir(0);
WAIT1_Waitus(30);
while(!dht11_in)
{
dht11_in = DHT_GetVal();
}
// if (dht11_in) {
// printf("dht11 start condition 1 not met\r\n");
// return;
// }
WAIT1_Waitus(80);//delayMicroseconds(80);
// dht11_in = DHT_GetVal();//dht11_in = PINC & _BV(DHT11_PIN);
// if (!dht11_in) {
// printf("dht11 start condition 2 not met\r\n");
// return;
// }
// WAIT1_Waitus(80);//delayMicroseconds(80);
// now ready for data reception
for (i = 0; i < 5; i++)
dht11_dat[i] = read_dht11_dat();
DHT_SetDir(1);
DHT_SetVal();
byte dht11_check_sum = dht11_dat[0] + dht11_dat[1] + dht11_dat[2]
+ dht11_dat[3];
// check check_sum
if (dht11_dat[4] != dht11_check_sum) {
printf("DHT11 checksum error\r\n");
}
printf("Current humdity = ");
//printf("%d",dht11_dat[0]);
UTIL1_Num8uToStr(strTmp1, sizeof(strTmp1),dht11_dat[0]);
UTIL1_Num8uToStr(strTmp2, sizeof(strTmp2),dht11_dat[1]);
UTIL1_strcat(strTmp1, sizeof(strTmp1),(byte *)".");
UTIL1_strcat(strTmp1, sizeof(strTmp1),strTmp2);
UTIL1_strcat(strTmp1, sizeof(strTmp1),(byte *)"%%\r\n");
//printf((char *)strTmp1);
//printf(".");
//printf((char *)strTmp2);
//printf("%d",dht11_dat[1]);
//printf("%%\r\n");
printf((char *)strTmp1);
printf("temperature = ");
printf("%d",dht11_dat[2]);
printf(".");
printf("%d",dht11_dat[3]);
printf("C \r\n");
// WAIT1_Waitms(2000);//delay(2000);
}
void irSensors(struct sensor s[6]){
/*#############################################################################################################################################################################
** Functia irSensors este folosita la citirea valorilor "raw" ale senzorilor.
**Argumentul functiei este un vector de tip structura de date sensor.
**Pasii pe care ii urmeaza:
** --declara pini care sunt conectati la senzori ca pini de output
** --seteaza valorile senzorilor pe HIGH -> se incarca condensatorul
** --asteapta 50us pentru incarcarea completa a condensatorului
** --declara pini care sunt conectati la senzori ca pini de input
** --reseteaza timer-ul deoarece poate iesi din limitele tipului de date int dupa un anumit timp
** --citirea valorii timer-ului
** --atribuirea valorii timer-ului variabilelor unde vom retine valorile senzorilor
** --intrarea in bucla de citire a senzorilor(se va termina cand toti pinii de la senzori au valoarea 0):
** ++variabila timer este folosita pentru a iesi din bucla daca este depasita valoarea constantei prag(datele mai mari decat valoarea pragului nu sunt relevante +
** citire mai rapida)
** ++verificarea valorilor pinilor conectati la senzori
** ++valoarea unui senzor devine egala cu valoarea timer-ului daca pinul respectiv are valoarea 1 (in final valoarea unui senzor va fi egala cu ultima valoare a
** timer-ului inainte ca pinul respectiv sa ia valoarea 0)
** ++daca variabila timer este mai mare decat valoarea pragului atunci este intrerupta executia buclei
**#############################################################################################################################################################################*/
int v[6];
int timer,i;
const int prag=1000;
IR_LED_SetOutput();
IR_LED_PutVal(1);
/*** Declararea senzorilor ca output. ***/
A1_SetOutput();
A3_SetOutput();
D11_SetOutput();
A0_SetOutput();
A2_SetOutput();
D5_SetOutput();
/*** Setarea senzoriilor pe HIGH. ***/
A1_PutVal(1);
A3_PutVal(1);
D11_PutVal(1);
A0_PutVal(1);
A2_PutVal(1);
D5_PutVal(1);
/*** Asteapta 50us pentru incarcarea completa a condensatorului. ***/
WAIT1_Waitus(50);
//Declararea senzorilor ca input. ***/
A1_SetInput();
A3_SetInput();
D11_SetInput();
A0_SetInput();
A2_SetInput();
D5_SetInput();
/*** Resetarea timer-ului. ***/
CountTimer_ResetCounter((LDD_TDeviceData *)NULL);
/*** Citirea vaorii timer-ului. ***/
timer=CountTimer_GetCounterValue((LDD_TDeviceData *)NULL);
s[0].value=timer;
s[1].value=timer;
s[2].value=timer;
s[3].value=timer;
s[4].value=timer;
s[5].value=timer;
/*** Bucla de citire -- executia buclei se va termina cand s-a terminat citirea tuturor senzorilor. ***/
while(v[0] || v[1] || v[2] || v[3] || v[4] || v[5]){
/*** Variabila timer este acum folosit ca un prag pentru a nu pierde prea mult timp cat senzorii sunt pe negru. ***/
timer=CountTimer_GetCounterValue((LDD_TDeviceData *)NULL);
/*** Variabilelor s1-s6 le este atribuita valoarea intrarilor senzoriilor(0 sau 1). ***/
v[0]=A1_GetVal();
v[1]=A3_GetVal();
v[2]=D11_GetVal();
v[3]=A0_GetVal();
v[4]=A2_GetVal();
v[5]=D5_GetVal();
/*** Daca intrarea unui senzor este 1 ii este atribuita variabilei s[i].value ultima valoare a timer-ului. ***/
for(i=0; i<6; i++){
if(v[i])
s[i].value=CountTimer_GetCounterValue((LDD_TDeviceData *)NULL);
}
if(timer>prag)
break;
}
}