Re: [LAU] Using an Arduino as a MIDI device

On 30/11/16 18:04, Hanspeter Portner wrote:
> On 30.11.2016 18:32, Bill Purvis wrote:
>> Anyone on the list know how to persuade an Arduino to look like a MIDI device?
>>
>> I've got it generating MIDI signals via a MIDI breakout unit, but want to
>> connect direct
>> to my PC using the USB. I've got it sending what appear to be valid MIDI messages to
>> /dev/ttyUSB1, but qjackctl doesn't see it as a midi device so it can't connect it.
>>
>> Any useful information would be welcome.
> Arduino by default enumerates its USB port as a virtual serial line (that's why
> your device is named /dev/tty*). In order to automatically enumerate its USB
> port as MIDI, you need a board with a processor that features an on-chip USB
> controller so it can be reprogrammed to also enumerate as USB MIDI [1].
>
> Alternatively, for Arduinos without on-chip USB, you can simply send your MIDI
> via the virtual serial line and run a ttyMIDI daemon on your receiving host
> which will mediate between serial line and ALSA MIDI [2].
>
> [1] https://www.arduino.cc/en/Reference/MIDIUSB
> [2] https://launchpad.net/ttymidi
Thanks, Hanspeter! Two useful links there.
I tried searching on the arduino forum, but got fed up after seven pages
of completely
unrelated messages.

ttymidi looks really useful, and works with my current code. I haven't
plucked up
courage to try MIDIUSB as it messes with the setting of the USB
bootloader and
I haven't figured out how I'd get out of it if it then decides to refuse
further
uploads. Maybe it's OK, but I'll postpone that for now. I can always run
several
copies of ttymidi when I get round to adding further complications to
the project.

Bill

-- 
+----------------------------------------+
| Bill Purvis                            |
| email: bill@email-addr-hidden                  |
+----------------------------------------+
_______________________________________________
Linux-audio-user mailing list
Linux-audio-user@email-addr-hidden
http://lists.linuxaudio.org/listinfo/linux-audio-user