Where to put drivers?

[kaievns]

Hi folks, I need a bit of an advise on where to put drivers in my config.

This is not my first zmk project and I'm trying something more ambitious this time with a new custom PCB keyboard build that has a trackball integrated.

I have set up a new shield and MCU overlay for the new PCB, transformations, keybindings, etc, and it compiles and works. Now I'm trying to add the trackball driver to the thing.

Basically what I want to accomplish is to copy and integrate this project https://github.com/inorichi/zmk-pmw3610-driver into my configs so I could tinker with the code locally without dealing with the full blown github actions, west, etc.

I see @ufan dropped his work into the app/drivers folder in the zmk repo itself over here https://github.com/ufan/zmk/tree/ptdevice-refactor/app/drivers/sensor/pixart/pmw3610. But I'm not sure how that would translate into a user config

I have stashed my work over here, it's pretty vanilla, I just don't know where all the C and Kconfig files from the driver should go in here https://github.com/kaievns/little-wing/tree/main/zmk-config

Thank you!

[kaievns]

I think I found a way to use the extra modules ref for that.

I have basically dumped that repo into an arbitrary folder ${my-config}/drivers/pmw3610 and then referred to that as an external zephyr module in the CLI args like so

west build -d build/right -p -b nice_nano_v2 -- \
  -DSHIELD="little_wing_right" \
  -DZMK_CONFIG="/workspaces/zmk-config/config" \
  -DZMK_EXTRA_MODULES="/workspaces/zmk-config;/workspaces/zmk-config/drivers/pmw3610"

the /workspaces/zmk-config is my docker mount for my user config.

it works, but it sort of feels hacky. is there a more officially blessed way to do this?

thank you