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

[Joseph Larralde]

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 at lists.iem.at a écrit :
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>     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 at miamiwave.com>
> To: <pd-list at 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
>
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