With aconnect, you can use the string name for the
device to connect to it, you don't need the indices. Some
caveats: if you are scripting Pd startup, you will need to wait
until the Pd MIDI devices are actually listed in also before
you can connect to them..
Here's a section of a script I wrote all the way
back to ~2007 for doing this on an old, headless wearable
computer running Debian:
#### Begin execution
# make sure the programs exist
#test -x /usr/bin/jackd || exit 5
test -x /usr/bin/pd || exit 5
test -x /usr/bin/aconnect || exit 5
# sleep to make sure alsa is running
#sleep 5
# check if UA-25 is connected and initialized by the kernel,
# if not then spin and wait until it is ready
KA=$(ls /proc/asound | grep UA25)
while [ "$KA" = "" ]
do
sleep
1
echo
"rc_starts_pd: where is the UA-25 soundcard??"
KA=$(ls
/proc/asound | grep UA25)
done
echo "rc_starts_pd: UA-25 is connected and ready"
# use jack?
if [ $USEJACK == 1 ] ; then
#
start jack, 16 ms latency
jackd
-R -dalsa -dhw:UA25 -r48000 -p512 -n3 -S &
#
make sure jack has enough time to get going
sleep
5
echo
"rc_starts_pd: starting pd"
pd
-jack -channels 2 -nogui -r 48000 -alsamidi -mididev 1 $PATCH
&
# use pd directly
else
echo
"rc_starts_pd: starting pd"
pd
-rt -nogui -alsa -audiodev 4 -audiobuf 10 -alsamidi $PATCH &
#
renice pd for much higher priority
renice -10 $(pidof pd)
fi
# wait for pd to initialize
KA=$(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
~~~
I have been having the same
problem - although I'm using the raspbian buster image
so I have pd 0.49.
Unfortunately there is no aconnect-gui in
raspbian, and I have found that aconnect -l finds pd's
midi ports only when you start pd with the
-alsamidi -midiindev and -midioutdev flags.
The command syntax to connect the USB midi device to
pd using aconnect then becomes:> aconnect 20:0
128:0
I'm looking to have all this automatically setup on
boot so I can run headless. If anyone knows how to do
that please let me know...
Cheers
=============================================
=============================================
Howdy
Paul,
Here is a quick response without
knowing your background or experience with
Pd/MIDI/Linux...
1. Do you have Pd's MIDI input
enabled? I don't see one listed, just the "Pure
Data Midi-Out 1"
2. Are you connecting devices? By
default, aconnect doesn't connect anything
automatically. I did a quick search and found
this which may be helpful if you are not
familiar with aconnect or aconnect-gui:
If you use aconnect-gui, basically
just connect you devices output to Pd's input.
Message: 2
Date: Thu, 13 Aug 2020 13:27:24
+0200
From: Paul Pignon <paulspignon@gmail.com>
To: pd-list@lists.iem.at
Subject: [PD] no midi input
Message-ID: <1694f7ee-de4f-702a-eaf3-91ad9302acfb@gmail.com>
Content-Type: text/plain;
charset="utf-8"; Format="flowed"
I'm running pd-l2ork/purr-data
I cannot get any midi input,
probably due to a woeful lack of
skill/knowledge.
aconnect -i
client 0: 'System'
[type=kernel]
0 'Timer '
1 'Announce '
client 14: 'Midi Through'
[type=kernel]
0 'Midi Through Port-0'
client 16: 'Mbox 2'
[type=kernel,card=0]
0 'Mbox 2 MIDI 1 '
client 20: 'USB Midi
Controller' [type=kernel,card=1]
0 'USB Midi Controller MIDI
1'
client 32: 'MidiSport 2x2'
[type=kernel,card=4]
0 'MidiSport 2x2 MIDI 1'
1 'MidiSport 2x2 MIDI 2'
client 128: 'Pure Data'
[type=user,pid=22170]
3 'Pure Data Midi-Out 1'
aseqdump -p 32
shows a well-behaved midi data
stream from my WX5.
testone.pd however shows no
midi input from any device.
Can anyone help me to get that
midi data into my patches?
Best regards,
/Paul
--
Paul [Stephen] Pignon
The DP Works HB
Södra Jordbrovägen 177/II
13762 Jordbro
Sweden
+46 729311141,[+46 705508655]
Pd-list@lists.iem.at
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