rmk 0.1.2

Keyboard firmware written in Rust
Documentation

RMK

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Keyboard firmware for cortex-m, with layer/dynamic keymap/vial support, written in Rust.

News

Rmk just released version 0.1.0, migrate to Embassy! By migrating to Embassy, Rmk now has better async support, more supported MCUs and much easier usages than before. For examples using Embassy, check boards folder!

Prerequisites

This crate requires Rust 1.75 and up. openocd(stm32) or probe-rs(stm32/rp2040) is used for flashing & debugging.

Usage

You can build your own keyboard firmware using RMK or try built-in firmware example for stm32h7 & rp2040.

Build your own firmware

Example can be found at boards. The following is a simple step-to-step instruction for creating your own firmware:

  1. Create a rust embedded project, Add rmk to your project using cargo add rmk
  2. Choose your target, use rustup target add <your-target-name> to install the target. Here is the doc for target choosing. For example, rp2040 is Cortex-M0+, so its target is thumbv6m-none-eabi.
  3. Create .cargo/config.toml in your project's root, specify your target here. See boards/stm32h7/.cargo/config.toml
  4. Create your own keymap file, see: boards/stm32h7/src/keymap.rs
  5. Generate the vial config of your keymap, folloing vial's porting guide
  6. Create main.rs, create your async fn main(). See boards/stm32h7/src/main.rs

Use built-in example

rp2040

  1. Install probe-rs 
    cargo install probe-rs --features cli
  2. Build the firmware 
    cd boards/rp2040
cargo build
  3. Flash it 
    cd boards/rp2040
cargo run

stm32h7

  1. Install openocd

  2. Build the firmware

    cd boards/stm32h7
cargo build

  3. Flash You can use both probe-rs and openocd to flash the firmware:

    # Use openocd
openocd -f openocd.cfg -c "program target/thumbv7em-none-eabihf/debug/rmk-stm32h7 preverify verify reset exit"

# Use probe-rs
cd boards/stm32h7
cargo run

  4. (Optional) Debug firmware using CMSIS-DAP

    Open the project using VSCode, choose Cortex-Debug - stm32h7 debug profile, then press F5, the firmware will be automatically compiled and flashed. A debug session is started after flashing. Check .vscode/tasks.json and .vscode/launch.json for details.

Roadmap

A lot of todos at the list, any contributions are welcomed :)

  • support rp2040
  • basic keyboard functions
  • layer
  • system/media keys
  • vial support
  • eeprom
  • keyboard macro
  • wireless
  • encoder
  • RGB
  • cli tools

License

Rmk is licensed under either of

at your option.