Zephyr Mechanical Keyboard (ZMK) Firmware

This project is a complete work in progress, with absolutely nothing functioning yet. The goal is to explore a new MK firmware with a less restritive license and better BLE support, built on top of the Zephyr Project

TODO

• Debouncing in the kscan driver itself? Only some GPIO drivers in Zephyr support it "natively"
• Document boards/shields/keymaps usage.
• Move most Kconfig setings to the board/keymap defconfigs and out of the toplevel prj.conf file.
• Merge the Kscan GPIO driver upstream, or integrate it locally, to avoid use of Zephyr branch.
• Display support, including displaying BLE SC auth numbers for "numeric comparison" mode if we have the screen.
• Fix BT settings to work w/ Zephyr. Do we really need them?
• Tests?
• Update the kscan GPIO driver to use interrupts.
  • Try disabling callbacks for the read pins temporarily when scanning, then re-enabling them.

Missing Features

• Consumer Key Support (play/pause, etc)
• Mod Tap
• One Shot
• Shell over BLE?
• Split support
  • custom kscan driver? that recieves events from other side over BLE notifications?
  • Need to figure out how to do "custom" GATT services. Custom UUID?
  • Do we need to send any state updates over from primary to secondary side?
• Encoders
• Battery reporting.
• Low power mode, with wakeup from interrupt?

Long Term

• Tool to convert keymap info.json files into a DTS keymap file?
• Firmware build service?