I'm awfully sorry for all the android autocorrection-induced spelling errors in so many of my latest mails. I'm not trying to fix my last email though, for fear of introducing even more mistakes...

mfg.sfg.jfd IOhannes

On 02/11/2024 11:49, Alberto Novello wrote:

Hi thanks for your answer Iohannes!! I tried but could not find a way. I attach my terminal attempts that report the error. I got better at the end but still cannot see Pure Data for some reason. What could it be?

i would really welcome it, if you could post the text of your input and the output you receive, rather than screenshots.

e.g.

pi@raspberrypi:~ $ aconnect 'MIDI Mix' 'Pure \ Data' 0
invalid destination address Pure \ Data

just select all the text in the terminal and paste it to your favourite text-editor. then copy that text-file to the computer you use to send emails from.

it's *much* easier for me (and probably others) to spot typos in text than in images.

apart from that: we have no idea which MIDI devices are available, which makes it also a bit hard to guess what a working example would be.

In any case, the message I have was for the [aconnect] pd object. The 'aconnect' cmdline program uses a different syntax. (Run man aconnect).

Iirc, it would be something like

aconnect MIDI\ Mix:1 Pure\ Data:0

mfdsar IOhannes

On 03/11/2024 00:00, IOhannes m zmölnig wrote:

• [aconnects] has been obsoleted by [aconnect] since v0.5 (which has

been released 3 years ago)

what i meant to say here is: use [aconnect] instead of [aconnects]. it appears to be more stable and correct, esp. when mixing symbolic names with numeric args (e.g. for the port-name)

fgmasd IOhannes

On 11/4/24 11:00, Alberto Novello wrote:

HI all, about the syntax:

From the command terminal:

aconnect MIDI\ Mix:1 Pure\ Data:0 invalid destination address Pure Data:0

that's the correct syntax.

so acconect works well with \ or ', space or not with MIDI Mix, no problem on the midi controller. My problem is Pure Data. I can't access Pure Data to connect. Which is weird as Pure Data is open and I can connect from its menu.

Pd has to run (with alsamidi) :-) what's the output of 'aconnect -l'?

I used the shell because [aconnects] doesn't let me see the error message. For now I have in my patch a [aconnect( -> [shell] and [aconnects]. I downloaded you package that is probably discontinued and used that.  I tried finding [aconnect] but cannot find that external. I

it's also part of the "aconnect" library (where you find [aconnects]). version 0.5 is available on deken. the library itself is not "discontinued" in the strict sense. it hasn't seen much love since 2021, but it is supposed to "just work". the repository (for feature requests, bug-reports,...) is at https://git.iem.at/pd/aconnect

[aconnect] (like [aconnects]) only gives you the error number (not the full error). (which could be a feature-request :-))

gdamr IOhannes

It looks like you are using a more recent version of linux that has transitioned to using Pipewire (instead of Jack etc.)

https://wiki.archlinux.org/title/PipeWire

On Mon, Nov 4, 2024, 6:48 AM Alberto Novello albynovello@gmail.com wrote:

Thanks IOhannes :)

so the result of acconnet -l is:

client 0: 'System' [type=kernel]

0 'Timer           '

Connecting To: 142:0

1 'Announce        '

Connecting To: 142:0

client 14: 'Midi Through' [type=kernel]

0 'Midi Through Port-0'

client 20: 'MIDI Mix' [type=kernel,card=1]

0 'MIDI Mix MIDI 1 '

client 142: 'PipeWire-System' [type=user,pid=895]

0 'input           '

Connected From: 0:1, 0:0

client 143: 'PipeWire-RT-Event' [type=user,pid=895]

0 'input

Which is what worries me cause there is no Pure Data even if it's running....

On Mon, Nov 4, 2024 at 11:38 AM IOhannes m zmoelnig zmoelnig@iem.at wrote:

...

On 11/4/24 11:00, Alberto Novello wrote:

...

HI all, about the syntax:

From the command terminal:

aconnect MIDI\ Mix:1 Pure\ Data:0 invalid destination address Pure Data:0

that's the correct syntax.

...

so acconect works well with \ or ', space or not with MIDI Mix, no problem on the midi controller. My problem is Pure Data. I can't access Pure Data to connect. Which is weird as Pure Data is open and I can connect from its menu.

Pd has to run (with alsamidi) :-) what's the output of 'aconnect -l'?

...

I used the shell because [aconnects] doesn't let me see the error message. For now I have in my patch a [aconnect( -> [shell] and [aconnects]. I downloaded you package that is probably discontinued and used that. I tried finding [aconnect] but cannot find that external. I

it's also part of the "aconnect" library (where you find [aconnects]). version 0.5 is available on deken. the library itself is not "discontinued" in the strict sense. it hasn't seen much love since 2021, but it is supposed to "just work". the repository (for feature requests, bug-reports,...) is at https://git.iem.at/pd/aconnect

[aconnect] (like [aconnects]) only gives you the error number (not the full error). (which could be a feature-request :-))

gdamr IOhannes

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ALBERTO NOVELLO, PhD New Media Artist and Tenure Track Professor

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On 11/4/24 15:48, Alberto Novello wrote:

Which is what worries me cause there is no Pure Data even if it's running....

right, that would explain why 'aconnect' cannot connect :-)

the default MIDI backend in Pd is "OSS MIDI". in order to ALSA seq as a MIDI backend, you have to explicitly choose it. the simplest way is obviously via the "Media" menu (pick the aptly named "ALSA-MIDI", and make sure to set the "In Ports" and/or "Out Ports" to some non-0 value (e.g. "1"). to make the settings persistent, you have to "Save All Settings".

alternatively (if you start Pd from the cmdline), you could simply add the "-alsamidi -mididev 1" flags.

note: for some obscure reason which i do not remember, the default number of in/out ports for ALSA-MIDI is 0 (zero, nada). Adding the flag "-mididev 1" will make sure you get one port in each direction. contrary to common sense, the actual number you put there does not matter (so you could also use "-mididev 0" to get one port. If you want multiple ports, specify them with multiple comma-separated numbers. e.g. "-mididev 1,2" will give you to ports. that's because with "-mididev" you are actually 'selecting' (pseudo-)MIDI devices rather than specifying their number. this is for consistency with other backends.

mfgasdr IOhannes

PS: personally i think that this behaviour is non-intuitive (even though iirc it was me who implemented it like this) and should probably be fixed as in:

• '-alsamidi' (without any "-mididev" argument) should default to a

single port.

• '-alsamidi -mididev 2' should probably create a single port as well,

but with a port-number "2" (for both in and out port). similarily, "-alsamidi -mididev 1,4" should create two ports with port-numbers "1" resp "4". probably time for a feature request :-)