Forcing a CAN dominant state on the Tracker SoM

Hi. I’m developing some board acceptence test procedures for a device that uses the Tracker SoM. I’d like to get a quick and dirty check that I haven’t flipped the polarity of my CAN bus by measuring a dominant state on the bus. I haven’t got any firmware to write anything over CAN, however, and I can’t guarantee that the person who will be testing the board will know how to flash new firmware, either locally or via the cloud.

I noticed that there’s a test pad on the Tracker SoM, TP29, that’s tied to the CAN transceiver’s Txd pin. Is that test point accessible on the Tracker SoM when mounted on a board, and if I short it to ground, will it set the bus’s state to dominant?

This topic was automatically closed 182 days after the last reply. New replies are no longer allowed.