From mboxrd@z Thu Jan  1 00:00:00 1970
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Date: Fri, 06 Feb 2009 10:24:16 +0100
From: Sebastian Smolorz <smolorz@domain.hid>
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Subject: Re: [Xenomai-help] timed looping task in device driver
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To: Zara Tustra <zarawesome@domain.hid>
Cc: xenomai@xenomai.org

Zara Tustra wrote:
> How would I set up a task that, say, turns a led on and off every second, in
> a device driver (module)? I've tried using rtdm_task_init and it's
> successful, but when I use rtdm_task_wait_period, it returns -EINVAL.

Xenomai has a useful API documentation where all API calls and the 
return values are well explained. For your case see

http://www.xenomai.org/documentation/branches/v2.4.x/html/api/group__rtdmtask.html#g577886a7588cdceac10f1b7b6ffcd1c7

-- 
Sebastian