STM32L0 Wakeup Source Detection

[nikhivv07]

HI,

MCU :STM32L010R8Tx

Power Mode : Shutdown Mode

Wake Up Sources : RTC WakeUp, External WakeUp Pin 1 , External WakeUp Pin 2.

 

Reading Boot reason by checking one by one using __HAL_RCC_GET_FLAG(Flag).

And Able to detect Standby Wakeup.

 

But How to know the source of wake Up whether it is caused by wakeup Pin or RTC ?

 

_Nikhil v v 

[Imen.D]

Hello @nikhivv07,

Please have a look at this post that may help you:

[STM32L0] Wake up Flag for RTC does not rise when ... - STMicroelectronics Community

 

[nikhivv07]

Hi,

thank you for the reference.

When device going to low power mode we are configuring RTC Wakeup time by writting

hrtc->Instance->WUTR = (uint32_t)WakeUpCounter; 

where wakeupcounter is the count value in seconds.

i like to know to which count register value is comparing to wakeupCounter (WUTR) to wakeup from Low Power Mode.

 

thanks,

Nikhil v v