Custom System Exclusive messages - dwhinham/mt32-pi GitHub Wiki

mt32-pi responds to MT-32 SysEx messages as you would expect, but it can also respond to its own commands. mt32-pi listens for manufacturer ID 0x7D, or the "non-commercial/educational use" special ID. Therefore, a complete mt32-pi SysEx message looks like:

F0 7D { command } { parameters } F7

Take a look at the System Exclusive utilities page for examples of utilities you can use for sending these messages.

⚠️ Note: These commands are subject to change until the project reaches a mature state.

Command	Description	Parameters
`00`	Reboot the Raspberry Pi.	None
`01` `xx`	Switch ROM set.	`xx` = `00`: MT-32 (old)`xx` = `01`: MT-32 (new)`xx` = `02`: CM-32L
`02` `xx`	Switch SoundFont.	`xx` = Zero-based index into contents of `soundfonts` directory (lexicographically sorted).
`03` `xx`	Switch synthesizer.	`xx` = `00`: MT-32`xx` = `01`: SoundFont
`04` `xx`	Enable/disable MT-32 reversed stereo.	`xx` = `00`: Disabled`xx` = `01`: Enabled (panpot CC values are inverted)