This example implements a USB MIDI device to demonstrate the use of the USB device stack. It implements the device configuration found in Appendix B of the Universal Serial Bus Device Class Definition for MIDI Devices.
The board will continuously send note on/note off messages.
The board will also react to identity request (or any other data sent to the board) by transmitting an identity message in reply.
To list midi devices, which should include this demo device
$ amidi -l Dir Device Name IO hw:2,0,0 MIDI demo MIDI 1 $
To record events
$ amidi -d -p hw:2,0,0 90 3C 40 -- key down 80 3C 40 -- key up 90 3C 40 80 3C 40^C 12 bytes read $
To query the system identity, note this dump matches sysex_identity in the source.
$ amidi -d -p hw:2,0,0 -s Sysexdump.syx F0 7E 00 7D 66 66 51 19 00 00 01 00 F7 ^C 13 bytes read $