[PD] ALSA MIDI problem

[Dan Wilcox]

Here's a portion of a startup script I use:

------------------------

echo "rc_starts_pd: strating pd"
pd -rt -nogui -alsa -audiodev 4 -audiobuf 10 -alsamidi $PATCH &

# renice pd for much higher priority
renice -10 $(pidof pd)

# wait for pd to initialize
KA=$(aconnect -i -o | grep "Pure Data")
while [ "$KA" = "" ]
do
	sleep 1
	echo "rc_starts_pd: pd alsamidi not ready"
	KA=$(aconnect -i -o | grep "Pure Data")
done
echo "rc_starts_pd: pd alsmidi is ready"

# connect the UA-25 midi to Pure Data
echo "rc_starts_pd: alsa midi connect 'UA-25' <-> 'Pure Data'"
aconnect 'UA-25' 'Pure Data'
aconnect 'Pure Data':1 'UA-25':0

# connect the VIEWCON dongle midi to Pure Data
echo "rc_starts_pd: alsa midi connect 'VIEWCON..' <-> 'Pure Data'"
aconnect 'VIEWCON..' 'Pure Data'
aconnect 'Pure Data':1 'VIEWCON..':0

----------------------

It starts Pd, then waits until the PD midi device is registered with ALSA before trying to connect two Midi devices: UA-25 & VIEWCON..

You could run the script from you ~/.bash_profile which would call it as soon as the user is logged in. I use this:

---------------------

# do nothing if this is a ssh session
if [ "$SSH_CLIENT" != "" ] ; then
    exit
fi

rc_starts_pd

---------------------

It's important to ignore ssh sessions since, if you're like me, and you want to login to your (wearable) computer via SSH to check something, you don't want to launch a new instance of pd.

On Jan 21, 2014, at 1:37 PM, pd-list-request at iem.at wrote:

> From: Jack <jack at rybn.org>
> Subject: Re: [PD] ALSA MIDI problem
> Date: January 21, 2014 at 8:20:27 AM EST
> To: "pd-list at iem.at" <pd-list at iem.at>
> 
> 
> Ok, I find a solution :
> 
> $ aconnect -i
> client 0: 'System' [type=noyau]
>    0 'Timer           '
>    1 'Announce        '
> client 14: 'Midi Through' [type=noyau]
>    0 'Midi Through Port-0'
> client 20: 'USB Uno MIDI Interface' [type=noyau]
>    0 'USB Uno MIDI Interface MIDI 1'
> client 128: 'Pure Data' [type=utilisateur]
>    1 'Pure Data Midi-Out 1'
> 
> $ aconnect -o
> client 14: 'Midi Through' [type=noyau]
>    0 'Midi Through Port-0'
> client 20: 'USB Uno MIDI Interface' [type=noyau]
>    0 'USB Uno MIDI Interface MIDI 1'
> client 128: 'Pure Data' [type=utilisateur]
>    0 'Pure Data Midi-In 1'
> 
> then :
> $ aconnect 128:1 20:0
> 
> Now, how can i keep this configuration each time i reboot my laptop ?
> ++
> 
> Jack

--------
Dan Wilcox
@danomatika
danomatika.com
robotcowboy.com





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