20 Mar
2006
20 Mar
'06
5:21 a.m.
Chris McCormick wrote:
I am having a perplexing problem with some midi gear.
I have a TR-505 drum
machine's midi out connected via midi cable to a uc33 midi controller's
midi in.
The UC-33 has two MIDI input ports, one for controller data and one for
the external MIDI port. See "amidi -l".
If I cat /dev/snd/midiC1D0
Don't do that, this is an internal ALSA file. If you have to use the
OSS interface, use /dev/midi01.
I get characters printing out whenever i turn the
knobs on the uc33.
If I start a beat on the TR-505 I get no characters. If I run puredata
I get data from the uc33 coming in as per normal. but then catting
/dev/snd/midiC1D0 does not print characters when I turn the knobs on
the uc33. If I start a beat on the TR-505 whilst puredata is running I
see it output characters in time to the beat.
Opening the file directly will access the first free port.
If you have a program that does not support ALSA MIDI ports (like PD),
load the snd-virmidi module and use aconnect to connect the UC-33's
second port to a virmidi port; then the second port is available as
/dev/midi0X where X is snd-virmidi's card number.
HTH
Clemens