[arm-allstar] How To for using GPIO on the DMK URI?

[John]

Hello Doug. Thanks for the additional information. I looked at the how-to
information on the web page but frankly, it scared me off.... I don't
understand enough about what I'm reading to even know where to begin. It's
not a lack of information, but rather a lack of understanding on my part.
I'll go back and re-read everything again and see if it sinks in a little
better on the second or third read through.

There are two of us who are embarking on a control project - the other ham
is just getting started. He's awaiting delivery of his first DMK URI. He
has a far-better engineering background than I, but he's not at all
familiar with Linux. Once we get his node on the air, then we will both be
asking a lot of questions, I'm sure. Many thanks to you and everyone on the
list for your patience and willingness to help others.

John

On Fri, Dec 18, 2015 at 12:34 PM, Doug Crompton <doug at crompton.com> wrote:

> John,
>
>  While the sound USB FOB extra GPIO bits are there and can certainly be
> used don't be afraid of the Pi GPIO. The howto is on the web page as well
> as a project that uses USB to create GPIO. Both definitely work and if you
> need more bits that would be the way to go. The Pi I/O using WiringPi is
> built-in to the hamvoip.org Pi image. Any of these methods can be used
> via scripts and Allstar. I use the USB GPIO project shown in how-to's on
> the web page at my Allstar demos, setting and resetting bits controlling
> relays via DTMF.
>
> Just remember that direct Pi GPIO is 3.3 volts!
>
>
>
> *73 DougWA3DSPhttp://www.crompton.com/hamradio
> <http://www.crompton.com/hamradio>*
>
>
> ------------------------------
> From: wb5nfc at gmail.com
> Date: Fri, 18 Dec 2015 10:26:14 -0500
> To: arm-allstar at hamvoip.org
> Subject: [arm-allstar] How To for using GPIO on the DMK URI?
>
> I'm just beginning to look at using some of the GPIO functions available
> in the Rpi2 / DMK URI. Looks like there are LOTS of different ways to
> accomplish the same task. To get started, I'd like to keep things as simple
> as possible. Really don't want to use the Pi's GPIO pins or an outboard USB
> device. Can someone point me in the right direction for information on
> controlling the URI's GPIO pins 1, 2 & 4?
>
>
> Thanks!
>
> John
>
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