Recently, I bought a Pinky4 keyboard kit, and I wanted to write some firmware in Rust for it. For the micro-controller, I'm using the Sparkfun Pro micro rp2040, which will have lots of storage, and a nice JST connector to a display, which I'll find a way to put onto the board.
I'll be using these crates:
- https://github.com/TeXitoi/keyberon
- https://github.com/rtic-rs/rtic
- https://github.com/rp-rs/rp-hal (as well as the bsp for the sparkfun rp2040 pro micro)
.. and more.
I was also looking into embassy, but it seemed harder to get into because they have an entire ecosystem of crates.
This project requires nightly rust(due to RTIC). Refer to the flake to get all the necessary tools. Use:
nix develop
to enter the dev environment.
Do:
cargo build
to build.
When running, you need to reset the RP2040 Pro Micro by holding the boot button, then press the reset button once, and releasing the boot button. The board should show up as a USB drive. Then you can do:
cargo run
to flash the firmware onto the board(it uses the: elf2uf2-rs tool for the usb upload).