[PD] MIDI under linux (solved, but maybe interesting anyways)

[Nicolas Lhommet]

I think it works like this

-midiindev 1    ->     /dev/midi
-midiindev 2    ->     /dev/midi01 or, if it fails with that device,
/dev/midi1
-midiindev 3    ->     /dev/midi02 or /dev/midi2
-midiindev 4    ->     /dev/midi03 or /dev/midi3
...

and the same with -midioutdev

nicolas


----- Original Message -----
From: "Frank Barknecht" <barknech at ph-cip.uni-koeln.de>
To: <pd-list at iem.kug.ac.at>
Sent: Saturday, September 01, 2001 1:46 PM
Subject: [PD] MIDI under linux (solved, but maybe interesting anyways)


> Hi,
>
> I would like to use pd with midi under linux, alsa-0.9.0beta7, but it
doesn't
> work. [Well, see below, it works now]
>
> My goal is, to send midi data from a sequencer to pd, so that pd plays the
> incoming notes.
>
> For this I set up a virtual midi device as card 3 (numbered as 2) with
alsa's
> virmidi module:
> # modules conf
> alias sound-service-2-1 snd-seq-oss
> alias sound-service-2-8 snd-seq-oss
> # virtual midi
> alias snd-card-2 snd-card-virmidi
>
>
> Then I 'aconnect' two ports:
> aconnect 80:0 81:0
>
> This gives:
> client 80: 'Virtual Raw MIDI 2-0' [type=kernel]
>     0 'VirMIDI 2-0     '
>         Connecting To: 81:0
> client 81: 'Virtual Raw MIDI 2-1' [type=kernel]
>     0 'VirMIDI 2-1     '
>
> I can then use /dev/snd/midiC2D0 as a raw midi port in the sequencer,
> /dev/snd/midiC2D1 gets all that is send to midiC2D0.
>
> I also made these links:
> /dev/midi20 => /dev/snd/midiC2D0
> /dev/midi21 => /dev/snd/midiC2D1
>
> This setup works nice with csound:
>
> $ csound -M /dev/midi21 midi.[orc|sco]
> plays the midi data, the sequencer sends to /dev/midi20
>
> But I cannot tell PD to read this data! No matter how I start PD, the
"Test
> AUDIO/MIDI" patch doesn't show any incoming notes. And yes, I did turn on
> "compute audio".
>
> $ pd -midiindev 1,2,3 -midioutdev 1,2,3
> gives no errors, but also gets no data.
>
> $ pd -midiindev 21 -midioutdev 21
> or
> $ pd -midiindev 21
> also gives no errors, but it doesn't work also.
>
>
> ######## Now it comes! ##########################
>
> Until here, this was the mail I was about to send, when I tried this:
>
> $ pd -midiindev 22
>
> and I tell you what, now it worked. Maybe my mail is interesting anyways,
> because it describes how to set up virtual midi with alsa for use with PD.
>
> bye,
> --
>                                                  __    __
>  Frank Barknecht       ____ ______   ____ __ trip\ \  / /wire ______
>                       / __// __  /__/ __// // __  \ \/ /  __ \\  ___\
>                      / /  / ____/  / /  / // ____// /\ \\  ___\\____ \
>                     /_/  /_____/  /_/  /_//_____// /  \ \\_____\\_____\
>                                                 /_/    \_\
>