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

Ico Bukvic ico at vt.edu
Wed Sep 22 17:19:36 CEST 2021


Pd-L2Ork also has disis_gpio and disis_spi that interface with if and gpio.
The gpio object allows for both hardware and software PWM, and is also
designed to work with actuators (e.g. servos).

Best,

Ico

-- 
Ivica Ico Bukvic, D.M.A.
Director, Creativity + Innovation
Institute for Creativity, Arts, and Technology

Virginia Tech
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(540) 231-6139
ico at vt.edu

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On Wed, Sep 22, 2021, 09:12 Alexandros <adrcki at gmail.com> wrote:

> Martin Peach had created two really nice objects, [pii2c] and [pispi] for
> communicating with Pi's I2C and SPI interface through its GPIOs. If you
> only want to light up an LED, it's perhaps easier to write a Python script
> that does that and call it with [ggee/shell].
> On 21/9/21 6:53 μ.μ., Ingo wrote:
>
> 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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