Watch dog reset flag on STM32F051

CAPOSIENA.Philippe · ‎2016-04-08

Posted on April 08, 2016 at 18:43

Hello,

i'm using a STM32F051 and i want to know if the reset is a watch dog reset or not.

I read the flag IWDGRSTF in the CSR register (RCC peripheral) but this bit is always set when a reset occurs.

I tried with no watch dog activated and the result is the same.

What's wrong with it ?

Thanks

Philippe

Tesla DeLorean · ‎2016-04-08

Posted on April 08, 2016 at 19:20

Do you clear the flag between tests?

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CAPOSIENA.Philippe · ‎2016-04-11

Posted on April 11, 2016 at 11:16

Hello,

yes i clear flags by writing bit RMVF in the CSR register after reading the CSR register.

The flag IWDGRSTF is always set at reset even if watch dog is completely disabled.

Philippe