[PD] udev & usb midi interfaces

[Daniel Wilcox]

Here's the pd start script I use (it's called at login):
http://trac.robotcowboy.com/browser/robotcowboy/trunk/scripts/rc_starts_pd

<http://trac.robotcowboy.com/browser/robotcowboy/trunk/scripts/rc_starts_pd>...
the trac is a bit empty right now as I just set it up last week.

On Mon, May 17, 2010 at 1:22 PM, Ingo Scherzinger <ingo at miamiwave.com>wrote:

>  Thank you Dan,
>
>
>
> I’ll check out both ways and see which one will work best.
>
>
>
> Ingo
>
>
>
> Subject: [PD] udev & usb midi interfaces
>
> Hi,
>
> does anybody know the search path to get udev information about usb midi
> interfaces?
>
> It should be something like “udevadm info -a -p / ??? …”. I’m not realy
> sure how to search for the soundcard either.
>
> I was using “lshal” which gives me a lot of information but I can’t tell
> which part to use for the udev device rules.
>
> I read Daniel Drake’s “writing udev rules” but he doesn’t mention sound at
> all.
>
>  Yeah, it's easy ... try
>
>
>
> udevinfo -a -p $(udevinfo -q path -n /dev/*your device*)
>
>
>
> and plug in the device ... this command will list all the udev attributes
> it sees when it makes the sysfs usb tree. I use it it see what attributes I
> can use for writing udev rules. Drake may not explciity list "sound" or
> "midi" devices, but they are covered by the tutorial as well ... just find
> where the device is mounted in /dev and use that node in udevinfo.
>
> I really need to write some udev rules to straighten out my 2 usb midi
> interfaces and soundcard that get mixed up all the time.
>
> Why udev rules then ...? I use the portaudio index of the soundcard to pass
> to pd with -audiodev on startup (I use -nogui and alsa) and another script
> which parses aconnect -io to determine the alsa mdii index, then calls
> aconnect again to connect pd with the midi device.
>
>
>
> Actually, perhaps you are right as it would be nice to have udev run
> aconnect whenever my midi device is plugged in.
>
>
> --
> Dan Wilcox
> danomatika
> www.robotcowboy.com
>



-- 
Dan Wilcox
danomatika
www.robotcowboy.com
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