Rtc Alarm and PA0-WKUP flag

Marco1 · ‎2017-08-18

Posted on August 18, 2017 at 21:48

Hi,

i'm working with STM32F415RG and i want only ask a easy question.

I'ts possible to detect if the chip (during StandBy mode) is wakeup from RTC ALARM or from PA0-WKUP pin ? some flag will be setted ?

Regard

Tesla DeLorean · ‎2017-08-18

Posted on August 19, 2017 at 03:27

Doesn't the RTC flag this? RTC_ISR

Plus you know the time currently and of the alarms.

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Marco1 · ‎2017-08-19

Posted on August 19, 2017 at 17:00

When you restart from Standby, both flags are '0', so you can't know if wakeup are from pa0-wkup pin or from RTC alarm.

Any way to detect it ?