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| CAN1 TX and RX are swapped! This was the case on the earliest C390 data sheet and we didn't catch the change in later versions. This is a big oops, if you are using CAN1 (the second CAN port). | These pins from the controller (P5.2 and P5.3) need to be swapped to connect to the CAN driver properly. Here's a page with the FIX. |