s32k312 reset issue

[NewbieNerd]

Hello, S32K3 team!

First off, thank you for your support with the previous FS26 issue.

I'm now facing a new challenge and seek your assistance.

I've successfully entered the LPOff mode using FS26 on the S32K312.
However, after initiating a reset with a wake-up signal, the board experiences a power reset within about 3 seconds.

When I checked with the Mcu_GetResetReason() function, it appears that the Reset Reason is either 'Power on Reset' or 'HSE boot Failure'.
Despite configuring the clock settings as per the reference manual, as suggested in another post, the reset keeps occurring, independent of my intentions. I’m attaching the log from the UART output for your reference.

I'd greatly appreciate your assistance.
Regard

[diazmarin09]

Hello NewbieNerd,

I hope all is great with you. Thank you for using the NXP communities.

Is the RSTB pin from the FS26 side asserting periodically? Have you conducted the watchdog refresh before the 256ms timeout? Please refer to the section 22.4 in the FS26 datasheet.

Regards,

David

[NewbieNerd · Accepted solution]

Hi  diazmarin09
I resolved the issue by referring to the post.

https://community.nxp.com/t5/S32K/S32K312EVB-reset-problem/m-p/1671141#M24067

And I think It appears that the HSE clock is the problem when creating a sample project in S32DS 3.5.

regard