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BKP0R clear after a Tamper event

Question asked by marco on May 8, 2018
Latest reply on May 8, 2018 by marco

Hi,

 

i'm working with stm32f415RG and i have a strange behaviuor with RTC.

 

I configured RTC with LSE

Alarm A Internal Alarm

Alarm B Internal Alarm

WakeUp : internal wakeup

Tamper1 Routed to AF1

TimeStamp on Tamper detection event is not saved

 

 

After init of RTC, BKP0R register is setted with 0x32F2 value, but immediatly after a tamper event, this value return to 0x00000. 

 

Its normal ?

 

Sorry for my english

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