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

Len Ovens len at ovenwerks.net
Sat Oct 7 23:48:12 UTC 2017

On Sun, 8 Oct 2017, Athanasios Silis wrote:

> Hi all,
> I have a BCR2000 and would like to use a script to set some values on these knobs
> and buttons.
> amidi should be able to help me do that but I somehow cannot properly set the
> name of the port in order to use it. Note, jackd server is up and running and
> then I also use the "aj2midid" midi bridge to populate hw and software midi ports
> in jack,

I think in this case a2jmidid would have to be off. amidi uses alsa midi, 
not jack midi so far as I know. (I could be wrong, try using the alsa 
ports first)

> The command I am trying to use is
> amidi -p"14:0" -S <3x bytes depicting the midi CC command>
> now port "14" SHOULD be the "Midi Through port as it appears in qjackctl's "midi"
> tab. I got it from

qjackctl's midi tab is jack midi ports. To see alsa midi ports look at the 
alsa tab.

> 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

maybe try 32:0?

Len Ovens

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