Sends a MIDI local control on message to all connected devices on all channels. Use the port: and channel: opts to restrict which MIDI ports and channels are used.

All devices on a given channel will respond both to data received over MIDI and played data, etc. See midi_local_control_off to disable local control.

MIDI 1.0 Specification - Channel Mode Messages - Local Control On

Introduced in v3.0

Examples

# Example 1

midi_local_control_on

#=> Enable local control on MIDI devices on all channels (and ports)

# Example 2

midi_local_control_on channel: 2

#=> Enable local control on MIDI devices on channel 2