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Keeping Variable at Watchdog reset

Question asked by mabo on Jun 6, 2018
Latest reply on Jun 9, 2018 by dhenry

Hello ST Community,

 

I´m using a STMS8105x6 MCU that has an appilcation running that communicates with other MCUs via UART and I2C. I also have a IWDG running, that does sometimes a reset because of communication errors.

 

What I want to know is, how to save a global volatile uint32_t variable that has an important value, that should not be lost at a watchdog reset.

 

Saving it to the EEPROM at every change is not an option. But maybe it can be stored into a backup register or the RAM somehow. Or can I prevent it from being newly initialized at startup?!

 

Using STVD + Cosmic Compiler.

 

Thank you in advance for your help.

 

MaBo

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