topic Re: S32144-LOC in S32K

S32144-LOC

Junkie — Thu, 04 Aug 2022 12:16:36 GMT

May I ask if the S32K144 software does not operate properly and triggers SOSCERR to be set when the SOSC clock monitor is turned on? I tried entering (all) low power modes after turning on the clock monitor, and I can see that SOSC becomes invalid (SOSCVLD=0) but no SOSCERR is generated.

Re: S32144-LOC

lukaszadrapa — Tue, 09 Aug 2022 08:27:59 GMT

Hi,

I'm not sure if I can understand the question but clock monitors should not be used in low power modes:

Regards,

Lukas

Re: S32144-LOC

Junkie — Tue, 09 Aug 2022 09:25:37 GMT

Yes, it is mentioned in the reference manual that SOSC monitor cannot be used in low power mode. But my purpose is to cause a LOC error to reset the MCU, I caused the LOC error by shorting the external SOSC crystal to ground, but is there a way to use software? I've tried going into low power mode to cause the LOC error but it doesn't work.

Re: S32144-LOC

lukaszadrapa — Wed, 10 Aug 2022 11:03:04 GMT

Well, I can't see simple way how to inject this error by software. As you mentioned, for test purposes such error is usually injected by shorting of OSC circuit in hardware.

Regards,

Lukas

Re: S32144-LOC

Junkie — Fri, 21 Oct 2022 10:13:49 GMT

OK, thank you very much.