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Date: Sat, 28 Feb 2015 19:36:58 +0800
From: Erich Dollansky <erichsfreebsdlist@alogt.com>
To: Milan Obuch <freebsd-arm@dino.sk>
Subject: Re: Raspberry Pi with PiTFT - some GPIO weirdness
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Hi,

On Sat, 28 Feb 2015 11:18:52 +0100
Milan Obuch <freebsd-arm@dino.sk> wrote:

> today I found some time to play a bit with my little display attached
> to Rasoberry Pi, and I decided to test buttons connected to GPIO, as
> this should work on FreeBSD already. According docs, buttons are
> connected to GPIO lines 23, 22, 21 and 18, leftmost first.
> 
> Using basic 'gpioctl -f /dev/gpioc0 -lv' command I found only first
> one, on line 23, reacts. It has value 1 normally and 0 when pressed.
> 
you must setup the pins as inputs first before using them as inputs. I
would not rely on any defaults.

Erich