Subject: Re: [linux-audio-dev] System Exclusive question
From: Chris Wareham (chris.wareham_AT_btinternet.com)
Date: Thu Jun 12 2003 - 00:11:17 EEST
Albert Graef wrote:
> Chris Wareham wrote:
>
>> Has anyone had succes in getting SysEx data flowing back and forth
>> between Roland sound modules and their computer?
>
>
> Is the usb-midi driver on your system based on Nagano Daisuke's work
> (http://member.nifty.ne.jp/Breeze/softwares/unix/usbmidi-e.html)? I
> recall that earlier versions of this driver had a bug which caused
> writing and reading of sysex messages to interfere.
>
The NetBSD driver isn't based on Nagano Daisuke's one. It appears to
predate his and was written by Takuya Shiozaki. Another poster suggested
I look at the "vsex" program, which includes a neat chunk of code for
writing to raw MIDI devices. Using this I was able to send one tuplet of
bytes to the /dev/music device before it blocked on any subsequent
writes. This suggests to me that NetBSD's USB MIDI driver and OSS
emulation arent communicating with each other properly. If so then I
think it's time I emailed the authors of those two subsystems to see if
they can shed any light on my problems.
Chris
-- http://www.btinternet.com/~chris.wareham/
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