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CAN Rx when running, not when stepping

Matt Harding
Prodigy 220 points

Other Parts Discussed in Thread: HALCOGEN

I'm using CCS6 HALCOGEN 4 and a RM48 dev board.

I'm trying to receive a bunch of can messages and parse them with some code like this:

if(canIsRxMessageArrived(MY_CAN, CAN_HEARTBEAT))
{
canGetData(MY_CAN, CAN_HEARTBEAT, rx_data);
rx_counter++;
parse_heartbeat(rx_data);
}

When it is running in debug mode (not paused/suspended), it seems to receive messages fine and the counter is incrementing. When I pause/suspend and single step through, canIsRxMessageArrived() always returns 0, even though messages are being sent to my dev board at 100 Hz.

Any idea why I can't receive messages when single-stepping?

Thanks,

Matt

  • 0
    TI__Guru 69070 points

    Matt,

    I don't think you can.  The TRM describes Debug/Suspend operation for the DCAN in section 23.16.  Unlike most of the other IPs I don't see an option to continue on suspend,  just an option to suspend immediately interrupting a transfer or to finish any pending transfer and then stop.