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]

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

[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