Hi,
I am on stm32u585 IOT dev board for low power modes am using RTC wakeup the sleep and stop 1,2 and 3 are working fine but standby and shutdown is not working ? my code
void sleep(int mode, int seconds ) {
if (seconds <= 0) return;
HAL_RTCEx_DeactivateWakeUpTimer(&hrtc);
__HAL_RTC_WAKEUPTIMER_CLEAR_FLAG(&hrtc, RTC_FLAG_WUTF);
uint32_t wakeup_counter (uint32_t)(seconds 2048);
HAL_RTCEx_SetWakeUpTimer_IT(&hrtc, wakeup_counter, RTC_WAKEUPCLOCK_RTCCLK_DIV16, 0);
switch (mode) {
case 0: // Sleep
HAL_SuspendTick();
HAL_PWR_EnterSLEEPMode(PWR_MAINREGULATOR_ON, PWR_SLEEPENTRY_WFI);
HAL_ResumeTick();
break;
case 1: // Stop0
HAL_SuspendTick();
HAL_PWREx_EnterSTOP1Mode(PWR_STOPENTRY_WFI);
break;
case 2: // Stop1
HAL_SuspendTick();
HAL_PWREx_EnterSTOP2Mode(PWR_STOPENTRY_WFI);
break;
case 3: // Stop2
HAL_SuspendTick();
HAL_PWREx_EnterSTOP3Mode(PWR_STOPENTRY_WFI);
break;
case 4: // Standby
__HAL_PWR_CLEAR_FLAG(PWR_WAKEUP_ALL_FLAG | PWR_FLAG_SBF);
HAL_PWR_EnterSTANDBYMode();
break;
case 5; // Shutdown/DeepSleep
__HAL_PWR_CLEAR_FLAG(PWR_WAKEUP_ALL_FLAG | PWR_FLAG_SBF);
HAL_PWREx_EnterSHUTDOWNMode();
break;
default:
break;
}
}
void HAL_RTCEx_WakeUpTimerEventCallback(RTC_HandleTypeDef *hrtc) {
HAL_RTCEx_DeactivateWakeUpTimer(&hrtc);
SystemClock_Config();
HAL_ResumeTick();
}
