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STM32L476VGT6 - RTC - Time after Reset

Question asked by mejrissi.chiheb on Sep 15, 2016
Latest reply on Sep 15, 2016 by mejrissi.chiheb
Hi guys,

The project that I am doing needs the RTC clock to be working all the time.

When VDD = 0V I have VBat powering the RTC. When the MCU reboots, I need to know if the time indicated by the RTC is correct, or if the time indicated by the RTC is wrong (eventually because of a drop in VBat).

Is there a way to detect if the RTC is showing the right time after a reset?

I am working with a STM32L476VGT6  MCU.

Thanks in advance for your time.