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CCS/TMS570LC4357: canTransmit Assumes Every Message is 8 Bytes

Matthew Cimino
Intellectual 255 points
Part Number: TMS570LC4357
Other Parts Discussed in Thread: HALCOGEN

Tool/software: Code Composer Studio

It seems that the canTransmit function always transfers 8 bytes into the IF register regardless of the data length code configured in HalCoGen. Is this intentional? This does not seem like a good idea.

  • 0
    TI__Guru**** 197356 points

    Hello,

    Yes, you are right. It always transfer 8 bytes data to the message object. If the data length code is less than 8 bytes, the remaining bytes of the message object is overwritten by undefined values.

    Only DLC bytes data are transmitted to the CAN bus.