Date: Tue, 30 Sep 2014 08:16:18 +0800 From: Erich Dollansky <erichsfreebsdlist@alogt.com> To: Luiz Otavio O Souza <lists.br@gmail.com> Cc: "freebsd-arm@freebsd.org" <freebsd-arm@freebsd.org> Subject: Re: Documentation for using GPIO Message-ID: <20140930081618.122a0c79@X220.alogt.com> In-Reply-To: <CAB=2f8xaB0UtwHRisU=86RU3U1mczaxKP=QC=HjgbHq0EL60Nw@mail.gmail.com> References: <20140929080337.46bbb5a3@X220.alogt.com> <CAB=2f8xaB0UtwHRisU=86RU3U1mczaxKP=QC=HjgbHq0EL60Nw@mail.gmail.com>
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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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