Wdog refreshing delay

ahmedhrabi — Thu, 27 May 2021 14:08:45 GMT

Hi all,

I'am using the wdog in a K64 without window mode. The problem is when i try to refresh the wdog before a delay of (WDOG_config.timeoutValue >> 3U), like it is done in the SDK example project, the chip don't take into account the refresh and reset the chip.

This delay is too long, for a Wdg timeout of 500 ms per example we have a delay of 500 ms >> 3U = 62 ms to wait before refreshing again !!

I notice that after initiating the Wdg, i respect the WCT delay before the first refresh.

This issue is already known, but there's no explications :

https://community.nxp.com/t5/MCUXpresso-SDK/MK66FX-WDOG-do-not-work/m-p/1204817/highlight/false#M2946

Regards.

Re: Wdog refreshing delay

Robin_Shen — Wed, 02 Jun 2021 09:33:46 GMT

Hi ahmedhrabi,

I don't think you have to wait this delay. It's just show you refresh WDOG 10 times every (config.timeoutValue >> 3U) delay.

Best Regards,
Robin

topic Wdog refreshing delay in Kinetis Microcontrollers

Wdog refreshing delay

Re: Wdog refreshing delay