Hi Clemens,
--- Clemens Ladisch <clemens@xxxxxxxxxx> wrote:
> R Parker wrote:
> > I still don't understand where the usb-midi i/o
> device is.
> > ...
> > There's no messages passing through
> /dev/snd/midiC1D0
>
> This file handles all nine ports. The ALSA library
> uses a magic IOCTL to
> select the desired port; when you access the file
> directly, you get the
> first port only.
After examining things a little closer, your reply
confirms my conclusion.
I think there's something wrong because no data is
making it to the /dev/snd/midiC1D0 file.
For demonstration, I've connected everything:
>aconnect -li
client 0: 'System' [type=kernel]
0 'Timer '
1 'Announce '
Connecting To: 128:0, 129:0
client 72: 'Rawmidi 1 - MidiSport 8x8' [type=kernel]
0 'MidiSport 8x8 Port 0'
Connected From: 72:1, 72:2, 72:3, 72:4, 72:5,
72:6, 72:7
1 'MidiSport 8x8 Port 1'
Connecting To: 72:0, 72:1, 72:2, 72:3, 72:4,
72:5, 72:6
Connected From: 72:1, 72:2, 72:3, 72:4, 72:5,
72:6, 72:7
2 'MidiSport 8x8 Port 2'
Connecting To: 72:0, 72:1, 72:2, 72:3, 72:4,
72:5, 72:6, 72:7
Connected From: 72:1, 72:2, 72:3, 72:4, 72:5,
72:6, 72:7
3 'MidiSport 8x8 Port 3'
Connecting To: 72:0, 72:1, 72:2, 72:3, 72:4,
72:5, 72:6, 72:7
Connected From: 72:1, 72:2, 72:3, 72:4, 72:5,
72:6, 72:7
4 'MidiSport 8x8 Port 4'
Connecting To: 72:0, 72:1, 72:2, 72:3, 72:4,
72:5, 72:6, 72:7
Connected From: 72:1, 72:2, 72:3, 72:4, 72:5,
72:6, 72:7
5 'MidiSport 8x8 Port 5'
Connecting To: 72:0, 72:1, 72:2, 72:3, 72:4,
72:5, 72:6, 72:7
Connected From: 72:1, 72:2, 72:3, 72:4, 72:5,
72:6, 72:7
6 'MidiSport 8x8 Port 6'
Connecting To: 72:0, 72:1, 72:2, 72:3, 72:4,
72:5, 72:6, 72:7
Connected From: 72:1, 72:2, 72:3, 72:4, 72:5,
72:6, 72:7
7 'MidiSport 8x8 Port 7'
Connecting To: 72:0, 72:1, 72:2, 72:3, 72:4,
72:5, 72:6, 72:7
Connected From: 72:2, 72:3, 72:4, 72:5, 72:6,
72:7
8 'MidiSport 8x8 Port 8'
With this scenario anything that comes in port_N,8
should be seen in the file /dev/snd/midiC1D0. Am I
right?
I'm sending commands into 2 and 8 but there's no data.
> If possible, you should use a program that can
> access MIDI ports via the
> ALSA library (the 8x8's ports would be named
> "hw:1,x", x = 0..8).
I've always used dd to see check for incoming mmc
messages. It's always worked. Is this what you're
referring to?
> If you want to access other MIDI ports than the
> first with a device file,
> you have to load the snd-virmidi driver, which will
> give you some virtual
> MIDI ports, and to connect these ports to the 8x8's
> ports with aconnect.
Yes, that confirmed my other conclusion and this is
pretty darned cool.
ron
> HTH
> Clemens
>
>
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