topic Re: Default ISR in S32K

Default ISR

Nayan123 — Thu, 21 Jul 2022 11:37:11 GMT

Hii,

I am trying to run an simple led blinking program on FS32K144HAT0MLL Microcontroller which comes in S32 series.

But my application gets stuck in Default_ISR.

Previoulsy I was using FS32K144UAT0VLL, difference is the operating clock frequency and operating temperature range.

PFA of debug view.

Re: Default ISR

Robin_Shen — Fri, 22 Jul 2022 01:39:50 GMT

Hi Nayan123,

Previous FS32K144UAT0VLL is 112MHz, and now FS32K144HAT0MLL is 80MHz. Did you change the clock frequency to 80MHz?

According to debug window, seems that PINS_Init() caused hardfault Default_ISR. Before the codes access the PINS_Init related registers, did the clock gate enabled? for example: when you access PORT_PCRn check the CGC bit in PCC register.

Best Regards,
Robin
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Re: Default ISR

Nayan123 — Tue, 26 Jul 2022 11:21:52 GMT

Hii Robin_Shen,

Thank you for reaching out.

The issue is resolved by changing the crystal oscillator. Its position was incorrect.