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MSPM0G3507: Issue of Transmission complete interrupt in MCAN

Leo Wu
Intellectual 1570 points

Part Number: MSPM0G3507

Tool/software:

Hi experts,

I am testing interrupt function on MCAN based on the demo "mcan_single_message_tx_LP_MSPM0G3507_nortos_ticlang" by using G3507 LP.

I add the Transmission complete interrupt as follows:

and let MCU sends data continuously

On PC sides, I can receive the data from MCU

However the "complete_count" do not increase.

Any suggestions for this issue?

Thanks,

Leo

  • 0
    TI__Expert 6255 points

    Hey Leo, thanks for reaching out! Can you set a breakpoint in the IRQHandler to see what the behavior is when it enters the interrupt routine?

    -Brian

  • 0 in reply to Brian Dempsey
    TI__Intellectual 1570 points

    Hi Brian,

    I add he BKPT in the IRQHandler. And the MCU do not stop here.

    For comparison, I test the RX interrupt in "mcan_message_rx_LP_MSPM0G3507_nortos_ticlang". The RX interrupt is OK.

    So, the What are the trigger conditions for Transmission complete interrupt? Can "mcan_single_message_tx_LP_MSPM0G3507_nortos_ticlang" trigger it.

    The follow is register value of rx demo vs tx demo:

    Thanks,

    Leo

  • 0 in reply to Leo Wu
    TI__Expert 6255 points

    Hi Leo, ok if you aren't ever hitting that IRQ handler, looks like we have something going on with the definition of the TX complete. Try importing the mcan_multi_message_tx, then add the same counter to see if it works in this scenario. 

    -Brian