GPIO button and userspace

[Oleksandr Tymoshenko]

On 2010-03-17, at 12:04 PM, Alex RAY wrote:

> Hackers
> help find the correct answer, in what way I can send interrupt on GPIO to
> the userspace script.
> I know that I can make the device, and open it in program, but it is
> cumbersome.
> I know what I can run the script from the kernel, as in Linux, but I think
> this is not the right way?

    IMHO the best way to implement it is to run scripts through devd. e.g. create
use subsystem "GPIO" and few event types: "BUTTON_DOWN", "BUTTON_UP",
/add yours here/. From the kernel side it's just a matter of calling devctl_notify if I got it right.

-- 
gonzo