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STM32F103ZG wake-up source identification from standby mode.

Question asked by v.ranga on Oct 6, 2016
Latest reply on Oct 6, 2016 by FTITI.Walid

We are using wakeup pin and RTC alarm sources for wakingup the STM from standby mode in different scenarios. We are facing the problem to identify the wakeup source i.e (wakeup because of pin or RTC alarm).

We tried to read the RTC CRL register also to get the alarm flag whenever STM wakesup, but it is not giving the alarm flag set value if it is RTC wakeup.

please let us know, how to identify the wakeup source.