How to use iwdg in stop mode with stm32l0xx?

[david lion]

Posted on January 19, 2017 at 14:32

Hi, I have a problem with low power mode. I want to use the watchdog with the stm32l0xx.

But when I go in stop mode, I can not disable or frooze the watchdog counter (only possible with l4 family).

And in a perfect world I don't want to wake up the stm in order to refresh the watchdog. It's not very efficient for power saving.

Is there a solution ? 

Tanks.

David.

#low-power-mode #stop-mode #stm32l0 #iwdg

[Ashley Duncan]

Posted on May 31, 2017 at 00:29

I know this is an old question but the answer is... you cant!

From reference manual:

20.3.4 Behavior in Stop and Standby modes Once running, the IWDG cannot be stopped.