topic FlexCAN bus error handling? in S32K

FlexCAN bus error handling?

reymor — Mon, 05 Feb 2024 20:31:50 GMT

Hello,

We use

- S32K144W

- S32DS 3.3

- SDK RTM 4.0.1

- CAN without FD

Maybe this is something wrong, but in which context CANx_Error_IRQHandler is called?

Is there any example for handling CAN bus errors using the FlexCan driver?

Basically, we disconnect the CAN bus which means an aknowledge error, but it is never called. We have introduced error in the bus and this fuctions is never called

We saw that in FLEXCAN_EnableIRQs::L617 the IRQ is enabled. However, we are not sure in which context CANx_Error_IRQHandler is called

Thanks in advance,

Re: FlexCAN bus error handling?

PetrS — Tue, 06 Feb 2024 11:07:44 GMT

Hi,

I tested error interrupt/callback using below example, I posted. It is using older SDK, but it should be similar, I guess.

https://community.nxp.com/t5/S32K-Knowledge-Base/Example-S32K144-FlexCAN-TX-RX-Error-ISR-test-S32DS2-2/ta-p/1278224

BR, Petr

Re: FlexCAN bus error handling?

reymor — Thu, 08 Feb 2024 14:19:07 GMT

Thanks PetrS