Re: [Gumstix-users] GPIO interrupt monitoring in C

[Nik M. <nm...@ra...>]

On 1/10/07, Rob Barnes <ro...@gm...> wrote:
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> Two Questions:
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> My program needs to quickly respond to changes on the GPIO pins (push buttons). I'm using the gpio-event driver posted the wiki to monitor the GPIO events. In my program I run a separate thread that does a blocking read on /proc/gpio-event, this causes the thread to stall until an interrupt occurs. Is this a good way of monitoring GPIO interrupts in a multi-threaded C program on the gumstix? Is there a better way of doing this?
>
If your thread only responds to gpio events, is it a problem for the
thread to stall?  I run an app in exactly the same manner, and it
works like a champ.
>

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> Thanks.
>
> -RobB

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