topic Re: Flexcan TX confirmation in S32K

Flexcan TX confirmation

BillWen — Wed, 29 Oct 2025 08:00:33 GMT

Hi NXP :

My platform is s32k358. I have a problem that when I use Can_43_FLEXCAN_Write to send can message, I can't get tx confirmation automatic. I think the process is that canif will call "CanIf_TxConfirmation" --> "UserTxConfirmation(for my project is eCan_TxConfirmation)" and check tx send successful. The following is my MCAL setting. I print log inside the CanIf_TxConfirmation but no any response, please help me to check if I have any wrong on configuration, thanks.

Thanks

BR, BillWen

Re: Flexcan TX confirmation

Senlent — Wed, 29 Oct 2025 09:02:40 GMT

Hi@BillWen

I tested the project you provided earlier, and it works fine.

Re: Flexcan TX confirmation

BillWen — Wed, 05 Nov 2025 04:24:22 GMT

Hi Senlent:

Sorry for late reply.

The following is my can tx confirmation setting

and the following is my iCan_TxConfirmation function

void iCan_TxConfirmation(PduIdType CanIfTxPduId, Std_ReturnType result)

{

Printf("CanIfTxPduId = %d\r\n", CanIfTxPduId);

}

I send extended can ID message every 100 ms, but I can't get any print log, it seems weird.

Thanks

BR, BillWen

Re: Flexcan TX confirmation

Senlent — Wed, 05 Nov 2025 04:36:17 GMT

Hi@BillWen

Please provide a test project and remove unnecessary code.

Re: Flexcan TX confirmation

BillWen — Wed, 05 Nov 2025 09:07:26 GMT

Hi Senlent:

I figure out that I set wrong swPduHandle make tx confirmation no response.

swPduHandle need corresponds the CanIfTxPduId, right?

Thanks
BR, BillWen

Re: Flexcan TX confirmation

Senlent — Thu, 06 Nov 2025 02:12:55 GMT

Hi@BillWen

yes