Pd-list September 2021

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29 participants
31 discussions

4. Re: How to use a DAC expansion board with the RPi4 (Ingo)
by Mark Polishook 23 Sep '21

23 Sep '21

> Today's Topics: > > 1. Re: How to talk to the Raspberry 4 GPIO and a multiple object > question ? (Ingo) > 2. How to use a DAC expansion board with the RPi4 (Ingo) > 3. Re: How to use a DAC expansion board with the RPi4 (Peter P.) > 4. Re: How to use a DAC expansion board with the RPi4 (Ingo) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Thu, 23 Sep 2021 13:47:55 +0200 > From: "Ingo" <ingo(a)miamiwave.com> > To: <joseph.larralde(a)gmail.com>, <pd-list(a)lists.iem.at> > Subject: Re: [PD] How to talk to the Raspberry 4 GPIO and a multiple > object question ? > Message-ID: <000a01d7b070$d90b2150$8b2163f0$(a)miamiwave.com> > > Thanks, Joseph! > > An additional Arduino is too large for this one. > > I just need to turn on 2 LEDs during startup and everything needs to fit into > this case: > https://www.berrybase.de/en/new/argon-nanosound-one-case-f-252-r-raspberry-… > > >> -----Original Message----- >> From: Pd-list [mailto:pd-list-bounces@lists.iem.at] On Behalf Of Joseph >> Larralde >> Sent: Wednesday, September 22, 2021 2:51 PM >> To: pd-list(a)lists.iem.at >> Subject: Re: [PD] How to talk to the Raspberry 4 GPIO and a multiple object >> question ? >> >> Hi Ingo, >> >> What I do for a project of mine is using an arduino connected to the rx tx >> pins >> of the Pi (rx tx voltages must be adapted, though) Then [comport] allows me >> to get both cards to talk together. >> It's on a Pi Zero so I don't know for other versions, but I also had to >> disable >> the serial console in raspbian lite's config file because it was causing >> glitches >> in the serial communication. >> Now it's working fine with a 115200 baudrate. >> Hope this helps, I can provide a few more details about this method if >> necessary. >> >> Joseph Larralde >> -- >> freelance developer >> www.josephlarralde.fr >> >> Le 22/09/2021 12:00, pd-list-request(a)lists.iem.at a crit : >>> Send Pd-list mailing list submissions to >>> pd-list(a)lists.iem.at >>> >>> To subscribe or unsubscribe via the World Wide Web, visit >>> https://lists.puredata.info/listinfo/pd-list >>> or, via email, send a message with subject or body 'help' to >>> pd-list-request(a)lists.iem.at >>> >>> You can reach the person managing the list at >>> pd-list-owner(a)lists.iem.at >>> >>> When replying, please edit your Subject line so it is more specific >>> than "Re: Contents of Pd-list digest..." >>> >>> >>> Today's Topics: >>> >>> 1. How to talk to the Raspberry 4 GPIO and a multiple object >>> question ? (Ingo) >>> >>> >>> ---------------------------------------------------------------------- >>> >>> Message: 1 >>> Date: Tue, 21 Sep 2021 17:53:46 +0200 >>> From: "Ingo" <ingo(a)miamiwave.com> >>> To: <pd-list(a)lists.iem.at> >>> Subject: [PD] How to talk to the Raspberry 4 GPIO and a multiple >>> object question ? >>> Message-ID: <000001d7af00$dc90b1d0$95b21570$(a)miamiwave.com> >>> Content-Type: text/plain; charset="us-ascii" >>> >>> Now that I got most of my software running on the Pi - with much more >>> performance than I expected - I need to be able talk to the GPIO of >>> the RPi 4. >>> >>> >>> >>> First of all a big thanks again for everybodys help me with the libraries >>> ! >>> ! ! >>> >>> >>> >>> I know there had been some changes a while ago with the RPi GPIO when >>> some way to interfacing with Pd dumped. >>> >>> I'm not sure what it was anymore - so, how can I connect from Pd atm? >>> >>> All I need to be able to do for now is turning on a few LEDs. >>> >>> >>> >>> Does [comport] recognize the GPIO of the RPi 4? >>> >>> >>> >>> BTW, the libraries are mostly working but I happen to have some >>> trouble with [speedlim] being in 3 different libraries. >>> >>> It's in Cyclone (which I had been using before and is working fine) >>> and also in maxlib and iemlib. >>> >>> The latter gives me sometimes trouble but I don't know how I can get >>> rid of single objects in "iemlib". >>> >>> (Sometimes it outputs a float instead of a list. I have already [t >>> list] in front of it.) >>> >>> >>> >>> Is it possible or will I have to prepend "cyclone" every time? >>> >>> >>> >>> Or is there another way to make sure that the cyclone object will be >>> used first instead of the iemlib object? >>> >>> The libraries are currently loaded in alphabetic order in the >>> ".pdsettings". >>> >>> >>> >>> Thanks >>> >>> Ingo >>> >>> -------------- next part -------------- An HTML attachment was >>> scrubbed... >>> URL: >>> <http://lists.puredata.info/pipermail/pd-list/attachments/20210921/2a6 >>> 1c1c0/attachment-0001.htm> >>> >>> ------------------------------ >>> >>> Subject: Digest Footer >>> >>> _______________________________________________ >>> Pd-list mailing list >>> Pd-list(a)lists.iem.at >>> to manage your subscription (including un-subscription) see >>> https://lists.puredata.info/listinfo/pd-list >>> >>> >>> ------------------------------ >>> >>> End of Pd-list Digest, Vol 198, Issue 34 >>> **************************************** >> >> >> >> >> _______________________________________________ >> Pd-list(a)lists.iem.at mailing list >> UNSUBSCRIBE and account-management -> >> https://lists.puredata.info/listinfo/pd-list > > > > > > > > ------------------------------ > > Message: 2 > Date: Thu, 23 Sep 2021 14:03:44 +0200 > From: "Ingo" <ingo(a)miamiwave.com> > To: <pd-list(a)lists.iem.at> > Subject: [PD] How to use a DAC expansion board with the RPi4 > Message-ID: <000b01d7b073$0f18f360$2d4ada20$(a)miamiwave.com> > Content-Type: text/plain; charset="us-ascii" > > Hi everybody! > > > > I just got a DAC expansion board for my RPi4 but Pd doesn't see it. > > https://www.berrybase.de/en/new/argon-nanosound-one-case-f-252-r-raspberry-p > i-4?c=2389 > > > > Since there is no room for a sound card in such a small box and the RPi > headphone out is no good it looks like the only compact way. > > > > Can anybody point me to instruction for making Pd use these DAC expansion > boards as a sound card? > > They obviously don't show up in the ALSA sound options by default. > > > > Thanks! > > Ingo > >

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Re: [PD] How to talk to the Raspberry 4 GPIO and a multiple object question ?
by Joseph Larralde 23 Sep '21

23 Sep '21

Hi Ingo, What I do for a project of mine is using an arduino connected to the rx tx pins of the Pi (rx tx voltages must be adapted, though) Then [comport] allows me to get both cards to talk together. It's on a Pi Zero so I don't know for other versions, but I also had to disable the serial console in raspbian lite's config file because it was causing glitches in the serial communication. Now it's working fine with a 115200 baudrate. Hope this helps, I can provide a few more details about this method if necessary. Joseph Larralde -- freelance developer www.josephlarralde.fr Le 22/09/2021 à 12:00, pd-list-request(a)lists.iem.at a écrit : > Send Pd-list mailing list submissions to > pd-list(a)lists.iem.at > > To subscribe or unsubscribe via the World Wide Web, visit > https://lists.puredata.info/listinfo/pd-list > or, via email, send a message with subject or body 'help' to > pd-list-request(a)lists.iem.at > > You can reach the person managing the list at > pd-list-owner(a)lists.iem.at > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Pd-list digest..." > > > Today's Topics: > > 1. How to talk to the Raspberry 4 GPIO and a multiple object > question ? (Ingo) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Tue, 21 Sep 2021 17:53:46 +0200 > From: "Ingo" <ingo(a)miamiwave.com> > To: <pd-list(a)lists.iem.at> > Subject: [PD] How to talk to the Raspberry 4 GPIO and a multiple > object question ? > Message-ID: <000001d7af00$dc90b1d0$95b21570$(a)miamiwave.com> > Content-Type: text/plain; charset="us-ascii" > > Now that I got most of my software running on the Pi - with much more > performance than I expected - I need to be able talk to the GPIO of the RPi > 4. > > > > First of all a big thanks again for everybodys help me with the libraries ! > ! ! > > > > I know there had been some changes a while ago with the RPi GPIO when some > way to interfacing with Pd dumped. > > I'm not sure what it was anymore - so, how can I connect from Pd atm? > > All I need to be able to do for now is turning on a few LEDs. > > > > Does [comport] recognize the GPIO of the RPi 4? > > > > BTW, the libraries are mostly working but I happen to have some trouble with > [speedlim] being in 3 different libraries. > > It's in Cyclone (which I had been using before and is working fine) and also > in maxlib and iemlib. > > The latter gives me sometimes trouble but I don't know how I can get rid of > single objects in "iemlib". > > (Sometimes it outputs a float instead of a list. I have already [t list] in > front of it.) > > > > Is it possible or will I have to prepend "cyclone" every time? > > > > Or is there another way to make sure that the cyclone object will be used > first instead of the iemlib object? > > The libraries are currently loaded in alphabetic order in the ".pdsettings". > > > > Thanks > > Ingo > >

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Announce: part-time PD teaching job in Bath (UK)
by Martin Dupras 20 Sep '21

20 Sep '21

Hi everyone, An advert has just gone live for a part-time post at Bath Spa University teaching PD/DSP this Semester 2. https://www.jobs.ac.uk/job/CJG673/associate-lecturer-in-creative-music-tech… (This is to cover some of my teaching so feel free to ask if you have any questions.) Many thanks! - martin

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error using high speed camera in TCL
by Csaba Láng 19 Sep '21

19 Sep '21

Hi list, I am using 7 same cameras with th backend pylon. For some reason pylon writes for the same camera Node not readable or: Tcl) INVALID COMMAND NAME: invalid command name ".x562a77779920.c" while executing ".x562a77779920.c delete 562a77785130BASE0" ("uplevel" body line 1881) invoked from within "uplevel #0 $docmds" How can I fix it? Any hints are welcome. Best, Popesz

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Working with Memory-Mapped File or Ramdisk
by Sebastian Lexer 19 Sep '21

19 Sep '21

Hi List, I want to share memory between several instances of PD running on separate reserved cores. I've tried the share-mem lib, but it has a very high overhead. Since I am writing custom externals for the puredata patches, I have started to include writing the data to be shared into files on a ramdisk. It does work quite nicely, but I am wondering whether some more elegant solution could be done using the Memory-Mapped Files, or are there any other simple and fast solutions around? Has anyone on this list experience with this? I don't actually need to share large data sets, mostly it's just bytes that indicate the state of the patch. Network based solutions have proven to be too slow. These patches will run on raspberry pi. Thanks! S

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Further questions on struct and the external api
by Pierre Alexandre Tremblay 15 Sep '21

15 Sep '21

Dear all I’m discovering the superb world of struct (with the 3 recommended tutorials, all of which very biased towards the graphic angle but I found ways around) and my new favourite friend is [text] for that reason :) 2 questions: - in the attached patch, I needed to create a dummy entry to my ‘test-item’ struct to be able to dynamically add entries infusing [append] - do I understand right? - it seems that I would be able to find workarounds the fact we cannot search my dataset by making an entry that would hold my keys at the top but that is cumbersome so I’m now making friends with the fantastic [text] object… the question I now have is for people developing externals: is it possible to access and write to struct and/or arrays from an external developed through the API? I didn’t find examples doing so nor any reference to text_buf in the API so I wonder if anyone has any pointers on that. Worse case I can use a message to dump a list and then [text fromlist] but that would be limited by the maxlength of the said list which was a problem in Max (hence us going the extra mile of supporting native dicts there) Thanks all for your help. p

2 3

ceammc on linux ? ....
by oliver 15 Sep '21

15 Sep '21

hi, is there any reason the CEAMMC linrary is not available for linux ? at least i can't find them on my DEBIAN (11 - bullseye) and UBUNTU (20.04 focal) machines ... PD 0.51.4 best oliver

2 1

planifolia v. 0.1
by padovani 15 Sep '21

15 Sep '21

Hi, I have just released 'planifolia', a set of abstractions designed to work without compiled externals. Among the the implemented processes, there are tools like arbitrary unary and binary operations in lists and arrays, quicksort, logical operators to check equality of arbitrary data types, easy OSC formatting/routing, etc. It also comes with toggle-based matrix GUI (designed to work be compatible with `iemmatrix` objects) and a matrix based step sequencer with some non usual features (independent tempo, beat and duration patterns, col/row/colrow modes, nice colors, etc). You can check the step sequencer here: https://www.youtube.com/watch?v=QIqTFOpvwsk It is in my github and I have just uploaded to deken (first time, I hope to have done it in the right way!). The github lives here: https://github.com/zepadovani/planifolia Hope it may be useful to PD people! cheers! josé -- José Henrique Padovani http://josehenriquepadovani.com/

1 0

external libraries for Raspberry Pi - how to compile?
by Ingo 12 Sep '21

12 Sep '21

Hi everybody! I was trying to use a Raspberry Pi for a change. I'm using the current Raspberry Pi OS (2021-05-07-raspios-buster-armhf). (So far I had been running my stuff on a UDOO Advanced plus board which runs on a Celeron CPU. Before that I used a AMD board - all 32-bit - i386-32.) However, I'm using a total of 22 external libraries - only 5 of them seem to be available for the RPi on Deken. (I already got the latest Deken version . . . ) A lot of these libraries are still coming from PdExtended and are maybe 10 years old or even older - like e.g. [toxy/tot]. This means that there is no way that I'm getting close to run this rather complex patch at all without most of these libraries. So I have two questions: 1) where can I find detailed instructions about compiling external libraries to work on the RPi ? (I'm more of a music person than a programmer . . . ) 2) what is the best place for finding the source codes of these (partially rather old) libraries ? Thanks! Ingo

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espeak external segfaulting on arm/rPi
by Peter P. 11 Sep '21

11 Sep '21

Hi list, trying to use the espeak external from https://github.com/kronihias/espeak.git on raspbian armv7l. I can make it crash by clicking the example message holding a list of words to synthesize twice in espeak-help.pd How can I go about debugging/fixing it? Thanks! P This is what gdb posts: gdb --args pd Desktop/espeak-help.pd [...] Reading symbols from pd...(no debugging symbols found)...done. (gdb) run Starting program: /usr/bin/pd Desktop/espeak-help.pd [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/arm-linux-gnueabihf/libthread_db.so.1". [Detaching after fork from child process 1354] [New Thread 0x76a4a440 (LWP 1357)] [New Thread 0x769c9440 (LWP 1358)] [New Thread 0x7019e440 (LWP 1359)] [New Thread 0x6f079440 (LWP 1360)] Thread 1 "pd" received signal SIGSEGV, Segmentation fault. 0x00024124 in ?? () (gdb) bt #0 0x00024124 in ?? () #1 0x00012fd4 in ?? () Backtrace stopped: previous frame identical to this frame (corrupt stack?)

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Pd-list September 2021