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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@dwallersv
Well well well... I just bothered to quickly review the STM32 datasheet, and see that there is a full-blown CAN state machine built in, functionality very similar to the MCP2515 above. I now understand Gordon's comments in this thread better.
So... abandoning the MCP2515 for the first go-around; I'm going to try and use the built-in CAN controller, configured on two of the GPIO pins on my Pico. I hope to succeed and be able to contribute a CAN module to the community here.