topic Re: S32K144 FreeRTOS CAN in S32K

S32K144 FreeRTOS CAN

乔国栋 — Fri, 05 May 2023 02:40:08 GMT

Hello, I use S32K144 series chip, SDK is 3.0.0. There is a problem in the process of using.

I created two CAN tasks, running them alone is fine, but running them both at the same time will cause an exception.

I have located the following functions that appear to be the install callback function. What's the reason, please? How to solve

回复： S32K144 FreeRTOS CAN

乔国栋 — Fri, 05 May 2023 02:43:25 GMT

回复： S32K144 FreeRTOS CAN

乔国栋 — Fri, 05 May 2023 02:45:16 GMT

What I know is the priority of the interrupt, but I CAN't find the enabled interrupt in the installation callback function, so I set the priority of all the interrupts about CAN, but this exception still occurs, when I just use a CAN task this problem does not occur

回复： S32K144 FreeRTOS CAN

乔国栋 — Fri, 05 May 2023 02:55:57 GMT

This function jumps directly to the exception

Re: S32K144 FreeRTOS CAN

PetrS — Fri, 05 May 2023 12:38:22 GMT

Hi,

can you share your code? You wrote 2 CAN tasks are created but from pictures only single is seen.
You mean when install callback function is executed the code goes to DefaultISR?
This function just save pointer to callback function into drive's state variable. Callback function will be called from CAN interrupt.

BR, Petr

Re: S32K144 FreeRTOS CAN

乔国栋 — Sat, 06 May 2023 00:36:39 GMT

There are two CAN initializers one FCBUSS and one ACDC, and my single step does jump to DefaultISR at the end of installing the callback.