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Date:      Mon, 29 Sep 2014 18:37:53 -0600
From:      Tom Everett <tom@khubla.com>
To:        Erich Dollansky <erichsfreebsdlist@alogt.com>
Cc:        "freebsd-arm@freebsd.org" <freebsd-arm@freebsd.org>
Subject:   Re: Documentation for using GPIO
Message-ID:  <CAB3ij4BYHWVDAXPe%2BCUXrCb=Ar65oBjHDf0eBzzk5Z4W8Zvqpg@mail.gmail.com>
In-Reply-To: <20140930081618.122a0c79@X220.alogt.com>
References:  <20140929080337.46bbb5a3@X220.alogt.com> <CAB=2f8xaB0UtwHRisU=86RU3U1mczaxKP=QC=HjgbHq0EL60Nw@mail.gmail.com> <20140930081618.122a0c79@X220.alogt.com>

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I published a simple example here.

https://github.com/teverett/gpioexample

On Mon, Sep 29, 2014 at 6:16 PM, Erich Dollansky <
erichsfreebsdlist@alogt.com> wrote:

> Hi Luiz,
>
> On Mon, 29 Sep 2014 16:27:26 -0300
> Luiz Otavio O Souza <lists.br@gmail.com> wrote:
>
> > > is there some documentation available of how to use GPIO on a
> > > Raspberry Pi B+ than man gpio, man gpioctl etc?
> > >
> > Unfortunately not, there is the Wiki page
> > (https://wiki.freebsd.org/FreeBSD/GPIO) but it doesn't add much.
> >
> I ave read this.
>
> > But we can try to help you whenever possible, just post your questions
> > and we'll try to address them.
>
> I am currently working on a C program which should use GPIO to switch
> relais and read the state of switches via GPIO. I would like to make
> this program as simple as possible by creating first a layer which
> provides then functions like set (Pin), reset (Pin)  and read (Pin)
> only. Of course plus the things needed to open, close and configure the
> interface.
>
> The best I have found until now are the sources of gpioctl. I am
> currently looking at the source.
>
> Is this the best start?
>
> Erich
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