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CCS/TMS320F28379D: CANB communication problem

Furkan YUMBUL
Intellectual 360 points
Part Number: TMS320F28379D
Other Parts Discussed in Thread: TMS320F28377D

Tool/software: Code Composer Studio

Hi all community, 

I tried to communicate with CANA peripheral on TMS320F28377D. And I send the message and receive it back at the same time succesfully . 

I try to same thing with CANB peripheral. I did it seperately. But it doesn't work at the same time. I cannot transmit and receive any message at the same time. 

What can be problem ? 

Regards. 

  • 0
    TI__Mastermind 38830 points

    Hi Furkan,

    There is not a lot of information to start with from the initial input you have provided, but a couple of general items to check:

           - Ensure that the GPIO mapping used for CANB has changed (CANA and CANB have different RX/TX mapping)

           - Check that the peripheral clock for CANB is on.  You can check register CpuSysRegs.PCLKCR10 if CAN_B is set or not.

           - Check the value of the status register CanbRegs.CAN_ES.  This can help you narrow down what could be wrong.

    Regards,

    Joseph

  • 0 in reply to Joseph Casuga
    TI__Mastermind 38830 points

    Hi Furkan,

    I have not seen a response from you regarding your post on CANB not working so I am assuming that you have resolved your issues, hence I am closing this thread.  If you still have issues with this, please post it in the forum.

    Regards,

    Joseph