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AM335x DCAN in silent mode to analyze traffic (also faults),

Steve Deschryver
Expert 1115 points
Other Parts Discussed in Thread: ISO1050

I want to use the DCAN on the AM335x to analyze CAN messages on the bus, not only valid CAN massages but also faulty ones.

But it seems i'm not able to capture CAN messages without  the ACK Slot asserted ?

Is there any way I can also capture CAN messages (preferable in silent mode) that were NOT acknowledged by a other receiver on the bus ?

I can use other operation modes for the DCAN bus it's isolated from the bus (ISO1050), Tx is hardwired to '1'.

  • 0
    Expert 1115 points

    It seems the CAN controller in silent mode will only accept a CAN message and put it in the FIFO if it contains an ACK at the end.

    This makes more or less sense in silent mode because you need to know if the message was received and accepted by the receiver !