# RP2040 Trackball Firmware

For use with Raspberry Pi Pico boards.

Adapted from the `dev_hid_composite` pico-example [from GitHub](https://github.com/raspberrypi/pico-examples/tree/master/usb/device/dev_hid_composite).

Supports PMW3360 optical mouse sensors.

## Quick Start

When compiling for the first time, check out the required git submodules.

    git submodule update --init
    cd pico-sdk
    git submodule update --init

Then do this to build.

    mkdir build
    cd build
    cmake ..
    make trackball

And flash the resulting `trackball.uf2` file to your Pico.