S32 Design Studio中的主题 Re: S32K144 : DefaultISR startupfile: function written in C-routine :

S32K144 : DefaultISR startupfile: function written in C-routine :

Dinesh_Guleria — Tue, 14 Sep 2021 10:24:42 GMT

Hi NXP team,

I have written a S32K144, DefaultISR function written in C-routine.
But this code is no getting hit, still execution goes to Assembly function..

/* The prototype shows it is a naked function - in effect this is just an assembly function. */ static void DefaultISR( void ) __attribute__( ( naked ) ); /* The default handler implementation */ static void DefaultISR(void) { NOP(); while(1) { NOP(); } }

Now DefaultISR is defines as weak function in startup file, but still execution goes to Assembly function.

How to override DefaultISR funtion in assembly file ?

Please suggest.

Regards,

Dinesh

Re: S32K144 : DefaultISR startupfile: function written in C-routine :

danielmartynek — Wed, 15 Sep 2021 10:40:04 GMT

Hi Dinesh,

As we discussed, I don't think you need this Default ISR.

Just implement handlers for interrupts/exceptions that are enabled by default like the HardFault handler.

Then, only the interrupts enabled in NVIC can be called and you should have handlers implemented for those interrupts.

Regards,

Daniel

Re: S32K144 : DefaultISR startupfile: function written in C-routine :

Dinesh_Guleria — Wed, 15 Sep 2021 10:40:16 GMT

Thanks daniel I will try this & update :--
https://community.nxp.com/t5/S32K-Knowledge-Base/Fault-handling-on-S32K14x/ta-p/1114447

Regards,

Dinesh