From: Jan Kiszka <jan.kiszka@domain.hid>
To: "Guanghui, Cheng" <cheng.guanghui.ml@domain.hid>
Cc: xenomai@xenomai.org
Subject: Re: [Xenomai-core] a problem about hpet device
Date: Thu, 05 Nov 2009 09:43:28 +0100 [thread overview]
Message-ID: <4AF29030.6020600@domain.hid> (raw)
In-Reply-To: <200911051050.24209.cheng.guanghui.ml@domain.hid>
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Guanghui, Cheng wrote:
> On Thursday 05 November 2009 07:53:26 Gilles Chanteperdrix wrote:
>> Guanghui, Cheng wrote:
>>> Hello:
>>> I need to use hpet device as my clock event source in my os
>>> and i have mapped this device to local place. But when i read the
>>> configuration or value all the bit is 1. Is it something wrong?
>> Excuse me, but what is the relation with Xenomai?
> Sorry and maybe it is not a direct topic about the Xenomai
> but about the real-time systems. I have traced Xenomai at least
> for 4 years and read every mail from this maillist. HPET is a very
> good internal timer source for real-time systems. Hopefully there
> are some people doing HPET issue. If there is no guy about
> this work please ignore this mail.
This is clearly off-topic for Xenomai. And note: HPET is not the best
timer source as it doesn't scale (in contrast to LAPIC timers).
Jan
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prev parent reply other threads:[~2009-11-05 8:43 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-04 21:12 [Xenomai-core] a problem about hpet device Guanghui, Cheng
2009-11-04 23:53 ` Gilles Chanteperdrix
2009-11-05 2:50 ` Guanghui, Cheng
2009-11-05 8:43 ` Jan Kiszka [this message]
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