TMS320F28034: CAN Bus Error Handling and Classification

您好，

     请参考设计手册， 在“Table 14-22. Error and Status Register (CANES) Field Descriptions” 指示错误类型，

      使用“14.9.14 CAN Error Counter Registers“恢复通讯。

      TMS320F2803x Microcontrollers Technical Reference Manual (Rev. A)

     CAN通讯示例代码

      ecan_back2back   

      Programming Examples for the TMS320x28xx eCAN (Rev. B)

Thank you for your response.

According to the design manual, when the CAN module's receive error counter (CANREC) or transmit error counter (CANTEC) reaches 128, it will automatically enter the "Bus-off" state, meaning the bus will be offline. In this situation, the current handling method is to use can_deinit to reinitialize the CAN module, thereby clearing the error state.

However, the question is whether there are other methods to handle the issue in a timely manner when the error count approaches 128, in order to avoid directly entering the "Bus-off" state. Or, is can_deinit the only feasible handling method?

您好，

“14.9.14 CAN Error Counter Registers“ 中没有提到用can_deinit清除错误状态。

它描述的是芯片如何检测CAN总线上出现的错误，自动进入bus-off状态，然后如何自动恢复bus-on.

 请注意，bus-off是由于CAN总线出现问题，不是TMS320F28034的CAN模块引起的。