[LAU] how can I send a midi command from bash through jack to my HW controller?

[David Kastrup]

Athanasios Silis
<athanasios.silis-Re5JQEeQqe8AvxtiuMwx3w at public.gmane.org> writes:

> So even though I thought this would be easy , I am stuck somewhere.
>
> The command I am trying to use is
> amidi -p"14:0" -S <3x bytes depicting the midi CC command>

amidi uses hardware ports, not sequencer ports.

They look like

dak at lola:/usr/local/tmp/lilypond$ amidi -l
Dir Device    Name
IO  hw:1,0,0  UM-4 MIDI 1
IO  hw:1,0,1  UM-4 MIDI 2
IO  hw:1,0,2  UM-4 MIDI 3
IO  hw:1,0,3  UM-4 MIDI 4

> now port "14" SHOULD be the "Midi Through port as it appears in qjackctl's
> "midi" tab. I got it from
> $ aconnect -i -o
> client 0: 'System' [type=kernel]
>     0 'Timer           '
>     1 'Announce        '
> client 14: 'Midi Through' [type=kernel]
>     0 'Midi Through Port-0'
> client 16: 'TerraTec DMX6Fire' [type=kernel]
>     0 'MIDI-Front DMX6fire 0'
>    32 'Wavetable DMX6fire 0'
> client 24: 'Hoontech SoundTrack Audio DSP24' [type=kernel]
>     0 'MIDI-1 Hoontech/STA DSP24 2'
>    32 'MIDI-2 Hoontech/STA DSP24 2'
> client 28: 'Hoontech SoundTrack Audio DSP24' [type=kernel]
>     0 'MIDI-1 Hoontech/STA DSP24 3'
>    32 'MIDI-2 Hoontech/STA DSP24 3'
> client 32: 'BCR2000' [type=kernel]
>     0 'BCR2000 MIDI 1  '
>     1 'BCR2000 MIDI 2  '
>     2 'BCR2000 MIDI 3  '
>
> but running "amidi -p14:0 -S <hexbytes>" returns
> cannot open port "14:0": No such file or directory

I have no idea why you would not use 32:0 if the BCR2000 is explicitly
listed as such.  However, again those are sequencer ports, not hardware
ports.

On my system, I'd see

dak at lola:/usr/local/tmp/lilypond$ aconnect -i -o
client 0: 'System' [type=kernel]
    0 'Timer           '
    1 'Announce        '
client 14: 'Midi Through' [type=kernel]
    0 'Midi Through Port-0'
client 20: 'UM-4' [type=kernel,card=1]
    0 'UM-4 MIDI 1     '
    1 'UM-4 MIDI 2     '
    2 'UM-4 MIDI 3     '
    3 'UM-4 MIDI 4     '

But I would not use 20:0 for amidi but rather hw:1,0,0 .  "UM-4 MIDI 1"
doesn't work either: it's just there for informational purposes.

dak at lola:/usr/local/tmp/lilypond$ amidi -p 20:0 -d
ALSA lib rawmidi.c:286:(snd_rawmidi_open_noupdate) Unknown RawMidi 20:0
cannot open port "20:0": No such file or directory
dak at lola:/usr/local/tmp/lilypond$ amidi -p hw:1,0,0 -d
^C
0 bytes read
dak at lola:/usr/local/tmp/lilypond$ amidi -p "UM-4 MIDI 1" -d
ALSA lib rawmidi.c:286:(snd_rawmidi_open_noupdate) Unknown RawMidi UM-4 MIDI 1
cannot open port "UM-4 MIDI 1": No such file or directory


-- 
David Kastrup