[TWAI-3.13.9] When a Stuff Error Occurs During Arbitration Whilst Being Transmitter, Any Errors in the Subsequent Error/Overload Frame Will Not Increase the TEC
Description
When a stuff error occurs during arbitration whilst being transmitter, the CAN2.0B protocol stipulates that an error frame be transmitted but the TEC should not increase (Exception 2 of Rule 3). The TWAI controller is able to fulfill these requirements without issue.
However, errors within the subsequent error/overload frames themselves will fail to increase the TWAI controller’s TEC. Therefore, when a stuff error occurs during arbitration whilst being transmitter, the TEC will fail to increase in the following cases:
Bit error in an active error flag or overload flag (Rule 4).
Detecting too many dominant bits after the transmission of active error, passive error flag, and overload flags (Rule 6).
Workarounds
There is no workaround for this issue.
Solution
No fix scheduled.