From: Antoine Nourry <nourry@domain.hid>
To: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
Cc: xenomai@xenomai.org
Subject: Re: [Xenomai-help] Keyboard IRQ
Date: Thu, 26 Mar 2009 23:49:43 +0100 [thread overview]
Message-ID: <49CC0687.2070509@domain.hid> (raw)
In-Reply-To: <49CBFA89.8020500@domain.hid>
Gilles Chanteperdrix a écrit :
> Antoine Nourry wrote:
>
>
>> I neither understand, is there a way to measure precisely the absolute
>> time of a keypress event on our computers ?
>>
>
> Well, you can wait for the event in a user-space program, and use Linux
> plain gettimeofday. It will probably give you more than enough precision.
>
>
Ok, i already made such programs but i thought that my polling method to
detect key event was bad and may consume too much time. Moreover aren't
there any risks of being preempted or slowed by other tasks ?
next prev parent reply other threads:[~2009-03-26 22:49 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-26 17:09 [Xenomai-help] Keyboard IRQ Antoine Nourry
2009-03-26 17:37 ` Gilles Chanteperdrix
2009-03-26 21:04 ` Antoine Nourry
2009-03-26 21:24 ` Gilles Chanteperdrix
2009-03-26 21:52 ` Antoine Nourry
2009-03-26 21:58 ` Gilles Chanteperdrix
2009-03-26 22:49 ` Antoine Nourry [this message]
2009-03-26 22:55 ` Gilles Chanteperdrix
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