Cartographer over Canbus

[WayneManion]

I could not get binaries built from this repo built to work on my Cartographer, which is connected via Canbus.

It took much trial and error, but I was able to build, flash, and communicate with my Cartographer after I built the binary using these menuconfig options:

The key was adding "Set pin PA1 at microcontroller startup." I also had to add this to the menuconfig for Katapult.

Note: if you want to build Katapult from source you will need to use Cartographer's Katapult fork. The required 24MHz crystal clock speed option is not present in mainline Katapult.

I don't know yet if eddy-ng works on a Canbus Cartographer, but I was at least able to build the binary, flash it, and communicate with the MCU.

[vvuk]

Yeah, apologies -- Cartographer needs to be much better documented. It's also a very tiny device (stm32f042) that requires some hacks. Specifically, there's hard-pwm support for the f042 that's not present in mainline Klipper that's required -- you can get them from this commit (the changes in the stm32 directory).