FlexCAN driver is not providing Tx confirmation under 65% busload

chetz — Mon, 07 Apr 2025 05:41:13 GMT

Problem Description:

Under 65% busload, we are missing CAN frame tx confirmation (interrupt based). We are using 4 MBs for transmission and using CAN 0 channel (CANFD). Could you help us to resolve this issue

Microcontroller used: MWCT2016S (S32K312)

NXP FLEXCAN driver version Details:

* Autosar Version : 4.4.0
* Autosar Revision : ASR_REL_4_4_REV_0000
* Autosar Conf.Variant :
* SW Version : 2.0.1
* Build Version : S32K3_RTD_2_0_1_D2207_ASR_REL_4_4_REV_0000_20220707

Re: FlexCAN driver is not providing Tx confirmation under 65% busload

Senlent — Mon, 07 Apr 2025 08:22:48 GMT

Hi@chetz

The SW version 2.0.1 is a very old version.

Please update to the latest software version before trying again.

If you update to a new software version and the problem still occurs, please provide a project

that can reproduce the problem and I will help you check it.

topic FlexCAN driver is not providing Tx confirmation under 65% busload in S32K

FlexCAN driver is not providing Tx confirmation under 65% busload

Re: FlexCAN driver is not providing Tx confirmation under 65% busload