- Jakob Laue jakkesprinter@web.de [2020-11-09 12:54]:
Hey friends, i have a raspberry pi that executes a bash script on startup. Inside this bash script I want two things to happen.
- start my pd patch
- connect my launchpad mini (connected via usb) to pd using the
aconnect-command
Have you tried searching for the keyword "aconnect" in the mailing list archive?
See eg this thread https://lists.puredata.info/pipermail/pd-list/2015-05/110230.html It seems that [aconnect] is not found when using "Find externals". Its sources are in SVN at least.
Dan's script from this thread https://lists.puredata.info/pipermail/pd-list/2014-01/105522.html is also nice!
On Mon, 2020-11-09 at 12:54 +0100, Jakob Laue wrote:
Hey friends, i have a raspberry pi that executes a bash script on startup. Inside this bash script I want two things to happen.
- start my pd patch
- connect my launchpad mini (connected via usb) to pd using the
aconnect-command
..i think i have to use aconnect because in pd itself i only see alsa midi as a midi device.
At the moment, my bash script only looks like this:
#!/bin/bash
sudo /usr/local/bin/pd -nogui -rt -open /home/pi/Documents/RSP/RSP/myPatch.pd
aconnect 'Pure Data':1 'Launchpad Mini':0
aconnect 'Launchpad Mini':0 'Pure Data':0
The problem is that the aconnect-commands seem to be not executed or executed too early because the virtual midi connections are not made.
The aconnect-commands have to be done after pd is started, so how could I change the script to wait until pd is done loading?
Poor man's solution:
put a 'sleep 5' after starting Pd.
A slightly more advanced way:
while ! aconnect --list | grep "Pure Data"; do sleep 0.1;
Put that after firing up Pd. It continues only after "Pure Data" appears in the list of available MIDI ports.
Roman
- Roman Haefeli reduzent@gmail.com [2020-11-09 13:25]:
[...]
Poor man's solution:
put a 'sleep 5' after starting Pd.
This of course introduces a race condition. Might almost always work™.
A slightly more advanced way:
while ! aconnect --list | grep "Pure Data"; do sleep 0.1;
Put that after firing up Pd. It continues only after "Pure Data" appears in the list of available MIDI ports.
Which is much more elegant, thanks Roman. Note that this will cause confusion when more than one Pd instance is running. A possible command line flag to name a Pd instance for alsa-midi was discussed in the aforementioned thread. It seems that it did not get implemented in the end.
cheers, P
Gesendet: Montag, 09. November 2020 um 13:59 Uhr Von: "Peter P." peterparker@fastmail.com An: pd-list@lists.iem.at Betreff: Re: [PD] help on bash script
- Roman Haefeli reduzent@gmail.com [2020-11-09 13:25]:
[...]
Poor man's solution:
put a 'sleep 5' after starting Pd.
This of course introduces a race condition. Might almost always work™.
A slightly more advanced way:
while ! aconnect --list | grep "Pure Data"; do sleep 0.1;
Put that after firing up Pd. It continues only after "Pure Data" appears in the list of available MIDI ports.
Which is much more elegant, thanks Roman. Note that this will cause confusion when more than one Pd instance is running. A possible command line flag to name a Pd instance for alsa-midi was discussed in the aforementioned thread. It seems that it did not get implemented in the end.
Yes, that looks elegant indeed! I will try that, thanks! Regarding multiple instances of pd: For now I have not planned to run more than one instance of pd, so I think I am good with that for now:)
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Here a bash script I used to use. You can adapt it for your needs :
#!/bin/bash chemin1=$(dirname "$0")/PH.pd sudo etherwake C8:60:00:2D:48:50 sleep 1 pd -nosleep -noaudio -alsamidi -midiindev 0,1 -midioutdev 0 -open $chemin1 & sleep 1 KA=$(aconnect -i | grep "Pure Data") while [ "$KA" = "" ] do sleep 1 KA=$(aconnect -i | grep "Pure Data") done aconnect 'Pure Data':2 'UM-1':0 sleep 1 aconnect 'UM-1':0 'Pure Data':0 sleep 1 aconnect 'nanoKONTROL':0 'Pure Data':1 echo "//////////Done.//////////"
++
Jack
Le 09/11/2020 à 13:25, Roman Haefeli a écrit :
On Mon, 2020-11-09 at 12:54 +0100, Jakob Laue wrote:
Hey friends, i have a raspberry pi that executes a bash script on startup. Inside this bash script I want two things to happen.
- start my pd patch
- connect my launchpad mini (connected via usb) to pd using the
aconnect-command
..i think i have to use aconnect because in pd itself i only see alsa midi as a midi device.
At the moment, my bash script only looks like this:
#!/bin/bash
sudo /usr/local/bin/pd -nogui -rt -open /home/pi/Documents/RSP/RSP/myPatch.pd
aconnect 'Pure Data':1 'Launchpad Mini':0
aconnect 'Launchpad Mini':0 'Pure Data':0
The problem is that the aconnect-commands seem to be not executed or executed too early because the virtual midi connections are not made.
The aconnect-commands have to be done after pd is started, so how could I change the script to wait until pd is done loading?
Poor man's solution:
put a 'sleep 5' after starting Pd.
A slightly more advanced way:
while ! aconnect --list | grep "Pure Data"; do sleep 0.1;
Put that after firing up Pd. It continues only after "Pure Data" appears in the list of available MIDI ports.
Roman
Pd-list@lists.iem.at mailing list UNSUBSCRIBE and account-management -> https://lists.puredata.info/listinfo/pd-list
thanks, jack!
Gesendet: Montag, 09. November 2020 um 14:00 Uhr Von: "Jack" jack@rybn.org An: pd-list@lists.iem.at Betreff: Re: [PD] help on bash script Here a bash script I used to use. You can adapt it for your needs :
#!/bin/bash chemin1=$(dirname "$0")/PH.pd sudo etherwake C8:60:00:2D:48:50 sleep 1 pd -nosleep -noaudio -alsamidi -midiindev 0,1 -midioutdev 0 -open $chemin1 & sleep 1 KA=$(aconnect -i | grep "Pure Data") while [ "$KA" = "" ] do sleep 1 KA=$(aconnect -i | grep "Pure Data") done aconnect 'Pure Data':2 'UM-1':0 sleep 1 aconnect 'UM-1':0 'Pure Data':0 sleep 1 aconnect 'nanoKONTROL':0 'Pure Data':1 echo "//////////Done.//////////"
++
Jack
Le 09/11/2020 à 13:25, Roman Haefeli a écrit :
On Mon, 2020-11-09 at 12:54 +0100, Jakob Laue wrote:
Hey friends, i have a raspberry pi that executes a bash script on startup. Inside this bash script I want two things to happen.
- start my pd patch
- connect my launchpad mini (connected via usb) to pd using the
aconnect-command
..i think i have to use aconnect because in pd itself i only see alsa midi as a midi device.
At the moment, my bash script only looks like this:
#!/bin/bash
sudo /usr/local/bin/pd -nogui -rt -open /home/pi/Documents/RSP/RSP/myPatch.pd
aconnect 'Pure Data':1 'Launchpad Mini':0
aconnect 'Launchpad Mini':0 'Pure Data':0
The problem is that the aconnect-commands seem to be not executed or executed too early because the virtual midi connections are not made.
The aconnect-commands have to be done after pd is started, so how could I change the script to wait until pd is done loading?
Poor man's solution:
put a 'sleep 5' after starting Pd.
A slightly more advanced way:
while ! aconnect --list | grep "Pure Data"; do sleep 0.1;
Put that after firing up Pd. It continues only after "Pure Data" appears in the list of available MIDI ports.
Roman
Pd-list@lists.iem.at mailing list UNSUBSCRIBE and account-management -> https://lists.puredata.info/listinfo/pd-list
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Roman Haefeli