How to wake up from stop mode with alarm A?
Hello,
I'm trying to wake up from stop 1 with the alarm A, and I was wondering if someone can help me with this.
Here is my code (I'm using HAL libraries first, the "easy" way base on the example ST gives: PWR/STOP1_RTC):
...
int main(void){
GPIO_InitTypeDef GPIO_InitStruct;
HAL_Init();
BSP_LED_Init(LED2);
SystemClock_Config(); //Config RCC
__HAL_RCC_PWR_CLK_ENABLE();
__HAL_RCC_WAKEUPSTOP_CLK_CONFIG(RCC_STOP_WAKEUPCLOCK_MSI);
SystemPower_Config(); //Config the RTC ----> 19:50:00
setAlarmA(); // The alarm is set to: 19:51:00
while(1){
...
/* Disable all used wakeup source */
HAL_RTCEx_DeactivateWakeUpTimer(&RTCHandle);
/* Re-enable wakeup source */
HAL_RTCEx_SetWakeUpTimer_IT( ........?........);
/* Enter STOP 1 mode */
HAL_PWREx_EnterSTOP1Mode(PWR_STOPENTRY_WFI);
} //End while (1)
} // End main
I don't know how to tell my STM that it will be woken up by the Alarm A (It goes there in the line I highlighted?) How do I do that?
My idea is to wake up the system at 19:51:00 and re-set the alarm A to: 19:52:00. In the alarmA callback, I wrote the following:
void HAL_RTC_AlarmAEventCallback(RTC_HandleTypeDef *hrtc){
setNewAlarmA();
}
I'm using the Nucleo Board STM32L476RG
Thank you very much for all the help.