nanokongo: generate input events from midi control changes

Configuration overview

The nanokongo configuration file is a YAML file. By default nanokongo will look for ~/.config/nanokongo/config.yml, but you can specify a path to a different file in the NANOKONGO_CONFIG environment variable.

The configuration file has three top-level keys:

• device: name of the MIDI device from which to read messages. This may be any substring that uniquely identifies the target device; for example, on my system, I have:

  $ midicat  ins
  MIDI inputs
  [0] Midi Through:Midi Through Port-0 14:0
  [1] nanoKONTROL2:nanoKONTROL2 nanoKONTROL2 _ CTR 36:0
  

  So I set device like this:

  device: nanoKONTROL2
  

• channel: the MIDI channel on which to listen. Defaults to 0 if not provided.

• controls: A mapping of control numbers to actions. For example, to send F1 whenever a button with MIDI control 48 is pushed:

  controls:
    48:
      type: button
      onRelease:
        - sendKeys:
            - keys: [f1]
  

Describing actions

The values in the controls map describe the actions that will be triggered by MIDI events. A control mapping may have the following fields:

• type: This may be either button or knob.

  A button control has onRelease, onPress, and onChange triggers.

  A knob control has an onChange trigger.

• onPress: This describes actions that occur when a button is pressed.

• onRelease: This describes actions that occur when a button is released.

• onChange: This describes actions that occur when the value of a MIDI control changes. The onChange trigger for buttons will only run if the control value is 127 or 0; for knobs it runs on every change.

Available actions

sendKeys

Send keystrokes with optional modifier keys.

sendMouse

Send mouse events.

command

Run commands.

sendMidi

Send MIDI control change messages.

Example configuration file