Re: A simple driver for the AT91SAM9260

["Maxin John" <arm.maxinbjohn@xxxxxxxxx>]

Dear Paul Kavan,

Please have a look at
http://linuxgazette.net/issue87/pramode.html

There Mr.Pramode is explaining some GPIO functionalities.

Regards,
Maxin B. John

On 4/13/07, Paul Kavan <pkavan@xxxxxxxxx> wrote:
> Hello all:
>
> I want to thank everyone who has tried to help me with my GPIO
> difficulties. I am new to embedded linux, so this has been a learning
> experience for me.
>
> I am currently reading Linux Device Drivers, 3ed. However, I want to
> experiment, while I am reading, with my 9260 board.  What I am wanting
> to do specifically is write a simple driver/module (not really sure of
> the terminology yet) for the two user buttons located on the
> evaluation kit of the AT91SAM9260. Said module would set interrupts
> for the buttons. When a button is pressed, I would hope an interrupt
> would then be generated and--from the interrupt--do something simple
> like print a message indicating that the button had been pressed.
> Another possibility is to have one button light the user LED and the
> other turn the LED off.
>
> I feel like if I can accomplish this in short order, I can move from
> there to more difficult tasks of setting up gpio pins to handle other
> types of IO for my project.
>
> Again, I am reading LDD, 3ed. Is there any other documentation out
> there that people are aware of that might help. Also, I am concerned
> about the build process of the code I write. I am using the buildroot
> system to develop my linux kernel and rfs. How do I use those
> toolchains to build drivers? Does anyone have a sample (and simple)
> makefile for their own drivers in the buildroot system that I can look
> to for advice?
>
>
> Again, thanks to all and I look forward to your comments and advice.
>
> Paul
>
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