README
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 'USER' button sends 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.
Board connections
| Port | Function | Description |
|---|---|---|
CN6 |
(USB_OTG_HS) |
USB acting as device, connect to computer |
Testing
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, while pushing the user button
$ 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
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