topic Re: CAN module issue on imx8m in i.MX Processors

CAN module issue on imx8m

niz — Wed, 09 Jul 2025 01:16:41 GMT

I am using VAR-SOM-MX8M-PLUS board (NXP i.MX 8M Plus) and I am dealing with the CAN module.

I am using the MCUXpresso_SDK for the CAN and I am having the following issue:

If I initialize the CAN 1 and then CAN2, I can use FLEXCAN_TransferReceiveNonBlocking to send CAN messages on both.

However, if I initialize CAN2 and then CAN1, I can only send CAN2, seems like CAN1 callback never hit kStatus_FLEXCAN_TxIdle.

Any clue would be appreciated.

niz — Wed, 09 Jul 2025 01:39:49 GMT

Correct here: if I initialize CAN2 and then CAN1, I can only send CAN1, seems like CAN2 callback never hit kStatus_FLEXCAN_TxIdle

Zhiming_Liu — Wed, 09 Jul 2025 04:45:07 GMT

Hi @niz

Please share your modification based on SDK if possible.

Best Regards,
Zhiming