TMS320F280039: TI280039 MCAN and CAN Transmit confirm

Hi Joseph，

     I tried to use Txok, but there were already Tx messages on the bus, and Txok was still 0. Check the user manual, 1 indicates that the message was sent successfully.

Hi Liu,

Would you have a CAN analyzer or any scope that is capable of  detecting CN frame?  These are the best methods to know for sure that a frame has been transmitted.

Regards,

Joseph

Hi Joseph，

     I used the CAN box to confirm that a sent message has been sent,but Txok is still 0.

Hi Liu,

When you are sending the CAN frame, is there a receiving node?  TxOk will only set to '1' if there is a node that ACKnowledged that the frame was received.

Regards,

Joseph

Hi Joseph,

    I use Canoe for receiving node and can see tx messages.

Hi Liu,

TxOK and LEC bits in CAN_ES will reflect the status if SIE bit in CAN_CTL register.  Can you check on this bit if it is set in your application?

Thanks,

Joseph