rmk-ble-keyboard

An open source BLE/USB dual-mode GH60 keyboard using Ebyte's E73 nRF52840 module, powered by rmk.

• Hardware: see root
• Firmware: see firmware folder
• Case: KBDFans Tofu Redux

Flash firmware

To flash firmware to rmk-ble-keyboard, you should have a debug probe. There are two firmwares, firmware/s140_nrf52_7.3.0_softdevice.hex is the nRF's BLE stack, and firmware/rmk-ble-keyboard.elf is the keyboard firmware. You can follow the steps below to flash them to your keyboard:

0. Install probe-rs

1. Erase your chip:

   probe-rs erase --chip nrf52840_xxAA
   

2. Flash nRF softdevice

   probe-rs download --verify --format hex --chip nRF52840_xxAA firmware/s140_nrf52_7.3.0_softdevice.hex
   

3. Flash pre-compiled firmware

   # Flash pre-compiled firmware
   probe-rs download --verify --chip nRF52840_xxAA firmware/rmk-nrf52840.elf
   

4. Or, you can re-compile RMK keyboard firmware and flash(requires Rust, see RMK's user guide)

   # Compile and flash
   cd firmware/rmk-nrf52840
   cargo run --release