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Author Topic: AM3352-SOM-EVB: CAN bus between two identical boards  (Read 241 times)


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AM3352-SOM-EVB: CAN bus between two identical boards
« on: February 12, 2018, 02:50:53 PM »

My question is how to connect two AM3352-SOM-EVB boards? My question is in terms of physical connection and software configuration during normal operation of the OS (kernel 4.4.x) or before building the kernel and the dtb files. Do I have to add any other HW, since there is already a controller (DCAN) and a transceiver (SN65HVD230)? All I want is to exchange packets between the two boards as I am monitoring each CAN interface via "candump" tool.



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Re: AM3352-SOM-EVB: CAN bus between two identical boards
« Reply #1 on: February 12, 2018, 03:09:58 PM »
Alex, I received your e-mail but I haven't had the time to respond. It is probably a software configuration or multiplexing issue.

One thing that might make a difference is that the CAN_T jumpers should be closed on both boards. The reason that it is open by default is because it should be closed only on the first and the rest boards in a CAN network. So if you have ten boards only the first and the last should have CAN_T closed, the other eight in the middle should have it open. In the case of only two boards, close CAN_T of each board.

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