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From: Simon Wright <simon@pushface.org>
Newsgroups: comp.lang.ada
Subject: Re: Ada / Automation fellows
Date: Sat, 28 Mar 2015 11:52:19 +0000
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"Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> writes:

> A short question. How do you access GPIO on Raspberry Pi? Over the text
> file devices?
>
> We access GPIO, analogue inputs and PWM output through text files. It looks
> crazy to me. Is there a better way?

Is this through the /proc filesystem? It goes against the grain, but it
does hide the gruesomeness of an ioctl-based interface; and not really
further removed from reality than presenting GPIO as a character
device.