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STM32L452 wakeup interrupt not firing after programming the MCU and system reset

Question asked by Kraal on Mar 16, 2018
Latest reply on Mar 16, 2018 by Kraal

Hi !

I have an application with the wakeup interrupt firing every x seconds. If the reset source is a power on reset, everything works as expected. However, when I upload a new code into the chip (so the MCU is reset by the ST-Link), the wakeup interrupt does not fire anymore, until I turn ON and OFF the power again.

Does anybody know why this is happening ? Is there a special handling that needs to be taken care of regarding the RTC ?