C++ (Cpp) TRIG_ClrVal Exemples

Exemple #1

Fichier : Ultrasonic.c Projet : Naerrci/INTRO_FC-Gring

/* measure and return the microseconds */
uint16_t US_Measure_us(void) {
  int timeout;
  
  FRTOS1_xSemaphoreTake(mutexHandle, portMAX_DELAY);
  usDevice.signalState = US_SIGNAL_OK; /* default state */
  /* send 10us pulse on TRIG line. */
  TRIG_SetVal(usDevice.trigDevice);
  WAIT1_Waitus(10);
  usDevice.state = ECHO_TRIGGERED;
  TU_US_Enable(usDevice.echoDevice);
  TRIG_ClrVal(usDevice.trigDevice);
  timeout = 30; /* timout in ms */
  while(usDevice.state!=ECHO_FINISHED) {
    /* measure echo pulse */
    if (usDevice.state==ECHO_OVERFLOW) { /* measurement took too long? */
      usDevice.signalState =  US_SIGNAL_NO_ECHO;
      break; /* no echo, error case */
    }
    WAIT1_WaitOSms(1);
    timeout--;
    if (timeout==0) {
      usDevice.signalState = US_SIGNAL_TIMEOUT;
      break;
    }
  } /* while */
  if (usDevice.state==ECHO_FINISHED) {
    usDevice.lastValue_us = (usDevice.capture*1000UL)/(TU_US_CNT_INP_FREQ_U_0/1000);
    usDevice.signalState = US_SIGNAL_OK;
  } else {
    usDevice.lastValue_us = 0; /* error case */
  }
  usDevice.state = ECHO_IDLE;
  FRTOS1_xSemaphoreGive(mutexHandle);
  return usDevice.lastValue_us;
}

Exemple #2

Fichier : Ultrasonic.c Projet : INFOTRONIK14/Project

/* measure and return the microseconds */
uint16_t US_Measure_us(void) {
  int timeout;
  
  FRTOS1_xSemaphoreTake(mutexHandle, portMAX_DELAY);
  /* send 10us pulse on TRIG line. */
  TRIG_SetVal(usDevice.trigDevice);
  WAIT1_Waitus(10);
  usDevice.state = ECHO_TRIGGERED;
  TRIG_ClrVal(usDevice.trigDevice);
  timeout = 30;
  while(usDevice.state!=ECHO_FINISHED && timeout>0) {
    /* measure echo pulse */
    if (usDevice.state==ECHO_OVERFLOW) { /* measurement took too long? */
      usDevice.state = ECHO_IDLE; /* go back to idle */
      break; /* no echo, error case */
    }
    WAIT1_WaitOSms(1);
    timeout--;
  } /* while */
  if (usDevice.state==ECHO_FINISHED) {
    usDevice.lastValue_us = (usDevice.capture*1000UL)/(TU_US_CNT_INP_FREQ_U_0/1000);
  } else {
    usDevice.lastValue_us = 0; /* error case */
  }
  usDevice.state = ECHO_IDLE;
  FRTOS1_xSemaphoreGive(mutexHandle);
  return usDevice.lastValue_us;
}

Exemple #3

Fichier : Ultrasonic.c Projet : 3ben1189/mcuoneclipse

/* 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;
}