Check on wake up reason after interrupt by RTC timer or interrupt pin

[hlmn7]

I do have problem to check wake up flag after wake-up from RTC timer or interrupt pin. This is my code block to check flag after wake-up:

void InitiateMode(int timeValue)
{
  turnOffPeripherals();
  timeValue = getTimeValue(timeValue);
  printf("\ngetMilSecBInSecond : %d\ntimeValue : %d\n\n", getMilSecBInSecond(), timeValue);
  HAL_SuspendTick();
  HAL_RTCEx_SetWakeUpTimer_IT(&hrtc, timeValue, RTC_WAKEUPCLOCK_CK_SPRE_16BITS);

  printf("Boot : ");
  printf("%d\n", bootCount);
  printf("Sleep mode Start\n");
  printf("Enable deep sleep, Will wake up in %d seconds\n\n", timeValue);

  /* Enter STOP 2 mode */
  // HAL_PWREx_EnterSTOP0Mode(PWR_STOPENTRY_WFI);
  // HAL_PWREx_EnterSTOP1Mode(PWR_STOPENTRY_WFI);

  getTotalTime();
  // betol2 sebelom
  HAL_PWREx_EnterSTOP2Mode(PWR_STOPENTRY_WFI);
  printf(" 2\n");

  // Check RTC Wake-Up Timer Flag
  if (__HAL_RTC_WAKEUPTIMER_GET_FLAG(&hrtc, RTC_FLAG_WUTF) != RESET)
  {
    // Wake-up event detected, clear the flag
    __HAL_RTC_WAKEUPTIMER_CLEAR_FLAG(&hrtc, RTC_FLAG_WUTF);

    // Your code to turn on the LED or perform other actions
    printf("Wake-up event detected by RTC timer, clear the flag\n");
  }
  if(__HAL_GPIO_EXTI_GET_FLAG(GPIO_PIN_7) != RESET)
  {
    // Wake-up event detected, clear the flag
    __HAL_GPIO_EXTI_CLEAR_FLAG(GPIO_PIN_7);

    // Your code to turn on the LED or perform other actions
    printf("Wake-up event detected by interrupt pin, clear the flag\n");
  }


  HAL_RTCEx_DeactivateWakeUpTimer(&hrtc);

  SystemClock_Config();
  // processable start hidup sini
  // printf("\nBetol 2 lepas wake up : %d\n", HAL_GetTick());
  printf("\nBetol 2 lepas wake up : %lu\n", HAL_GetTick());
  HAL_ResumeTick();
  getTickTimeStart();

  printf("Sleep mode End\n");
  printf("Wake Up!!\n");
  printf("----------------------------------------------------------------\n\n");

  // Increment the bootCount
  ++bootCount;
  printf("Bootcount  : %d\n", bootCount);
}

The section:

  // Check RTC Wake-Up Timer Flag
  if (__HAL_RTC_WAKEUPTIMER_GET_FLAG(&hrtc, RTC_FLAG_WUTF) != RESET)
  {
    // Wake-up event detected, clear the flag
    __HAL_RTC_WAKEUPTIMER_CLEAR_FLAG(&hrtc, RTC_FLAG_WUTF);

    // Your code to turn on the LED or perform other actions
    printf("Wake-up event detected by RTC timer, clear the flag\n");
  }
  // Check GPIO 7 interrupt pin Flag
  if(__HAL_GPIO_EXTI_GET_FLAG(GPIO_PIN_7) != RESET)
  {
    // Wake-up event detected, clear the flag
    __HAL_GPIO_EXTI_CLEAR_FLAG(GPIO_PIN_7);

    // Your code to turn on the LED or perform other actions
    printf("Wake-up event detected by interrupt pin, clear the flag\n");
  }

I set 10 second timer during STOP2 mode, after that the system wake-up, but when i check the log, no line is printed mean that __HAL_RTC_WAKEUPTIMER_GET_FLAG(&hrtc, RTC_FLAG_WUTF) == RESET or __HAL_GPIO_EXTI_CLEAR_FLAG(GPIO_PIN_7) == RESET, is there any problem in my code? please help me sifu, i am already struck by lighting

[Sarra.S]

Hello @hlmn7, 

Could you check the initial state of flags before entering stop2 mode?

[hlmn7]

Thanks for the reply, I just checked the initial state with the code added in void InitiateMode below:

   // Check RTC Wake-Up Timer Flag
  if (__HAL_RTC_WAKEUPTIMER_GET_FLAG(&hrtc, RTC_FLAG_WUTF) == SET)
  {
    // Your code to turn on the LED or perform other actions
    printf("Wake-up RTC timer flag is SET\n");
  } else {
    printf("Wake-up RTC timer flag is RESET\n");
  }

  // Check GPIO 7 interrupt pin Flag
  if (__HAL_GPIO_EXTI_GET_FLAG(GPIO_PIN_7) == SET)
  {
    // Your code to turn on the LED or perform other actions
    printf("Interrupt GPIO_PIN_7 flag is SET\n");
  } else {
    printf("Interrupt GPIO_PIN_7 flag is RESET\n");
  }

the output:

22:12:22:545 -> Total time process : 6119
22:12:22:545 -> Wake-up RTC timer flag is RESET
22:12:22:545 -> Interrupt GPIO_PIN_7 flag is RESET

both are in reset state like I taught on top of the topic, I have no idea what to do next, I really need help on this.
@Sarra.S 

[hlmn7]

Hi @Sarra.S, please check my latest reply. Thanks.