topic S32K344 SWT reset in S32K

S32K344 SWT reset

nirmal_masilamani — Fri, 19 Jun 2026 04:18:59 GMT

Hello ,

I am trying to understand the SWT functionality.

I injected stackoverflow to check how SWT reset the controller. Reset happening properly. Reset reason also match with SWT.

when i continously trigger stackoverflow error, After 8 times, controller does not power up.

I check many times, it working exactly 8 times only, is there any specific reason? or is it configurable?

Re: S32K344 SWT reset

lukaszadrapa — Fri, 19 Jun 2026 09:08:46 GMT

Hi @nirmal_masilamani

This is caused by reset escalation feature. Take a look at following sections in the reference manual or just search for “reset escalation” keyword in the document for more details:

33.7.7 Functional reset escalation

33.7.8 Destructive reset escalation

It can be disabled by FRET and DRET registers in MC_RGM module.

Regards,

Lukas

Re: S32K344 SWT reset

nirmal_masilamani — Mon, 22 Jun 2026 05:19:03 GMT

Hello @lukaszadrapa

Thank you for your response.

I understood that by changing FRET and DRET, we can cfg reset escalation. In Power module there is a parameter for that.

If I keep zero in both, i am able to disable escalation but, if I change the counter between 1 to 15, its not reflecting. Still SWT working only for 8 times.