New subject: How to talk to the Raspberry 4 GPIO and a multiple object question ?

22 Sep 2021

      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@lists.iem.at a écrit :
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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@miamiwave.com
To: pd-list@lists.iem.at
Subject: [PD] How to talk to the Raspberry 4 GPIO and a multiple
   object question ?
Message-ID: 000001d7af00$dc90b1d0$95b21570$@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

Re: [PD] How to talk to the Raspberry 4 GPIO and a multiple object question ?

Joseph Larralde

Joseph Larralde