Mutual UART communication

Valid version

0.9.6+

Deprecation

In 0.9.20, hardware one-way UART on split-type is deprecated. Instead, software mutual UART is now the default and the only option Keyboard#mutual_uart_at_my_own_risk= no longer takes any effect

Feature

• Syncs RGB blinking between both halves
• Keycodes related to RGB (see RGB-feature) work on not only anchor but also partner half

In your keymap.rb

kbd = Keyboard.new
kbd.split = true

# In 0.9.20+, you dont' need write this line
kbd.mutual_uart_at_my_own_risk = true

Caution❗

• Turning on Keyboard#mutual_uart_at_my_own_risk is an experimental feature
  • It may make the keyboard unstable and may break your chip🔥 depending on your usage. See below
• Make sure to disconnect the TRS(TRRS) cable when you change this option. Reconnect it after changing BOTH halves
  1. Disconnect the USB cable and the TR(R)S cable
  2. Connect the USB cable to a half, flash prk_firmware-*.uf2 and your keymap.rb that configures mutual_uart_at_my_own_risk = true
  3. Disconnect the USB cable
  4. Connect the USB cable to the other half, flash prk_firmware-*.uf2 and your keymap.rb that configures mutual_uart_at_my_own_risk = true
  5. Disconnect the USB cable
  6. Connect the TR(R)S cable
  7. Eventually, connect the USB cable to the anchor half

We know you feel messy

We have the plan to implement a new feature in order to make things simple: issue/155