From: Nicholas Mc Guire <der.herr@hofr.at>
To: Howard Lee Harkness <howard.lee.harkness@gmail.com>
Cc: xenomai@xenomai.org
Subject: Re: [Xenomai] Seeking recommendations for SBC with precision timer
Date: Fri, 26 Oct 2012 14:36:34 +0200 [thread overview]
Message-ID: <20121026123634.GA28381@opentech.at> (raw)
In-Reply-To: <CAMVghhVFiQNbPLgS5zpLw7Bu5t9mxdY5U9htVOOrRxQt_RWgVQ@mail.gmail.com>
On Fri, 26 Oct 2012, Howard Lee Harkness wrote:
> I have a client requirement for a system that can handle hard real time
> with precision timing, and I'm looking for recommendations for a SBC to
> support it. Here's what is needed:
>
> 1) x86 architecture
fanless ?
> 2) support for Linux (I will probably be using Xenomai)
> 3) precision timer with 1 us resolution
many systems will be able to give you a timer reolution of <=1us
but there is no system that will bee able to timstamp an event with
that precission - that is any timestamp you get will have an
uncertenty atleast in the range of a few microseconds to a few
tens of microseconds (thats independent of using Xenomai, Preept-RT
or RTAI)
> 4) PC/104 bus
> 5) lots of I/O (USB 2, I2C, SPI, GPIB, etc)
>
> Anybody here have any experience with a board that has all this?
it does to some extent depend on the "etc" of the "lots of I/O" unless you
are good with it all being stacked on the PC/104.
you might want to look at the boards in the http:/www.OSADL.org/QA, unfortunately not xenomai based systems in the farm but the jitter/latency numbers will most likely hold for Xenomai based systems with negligable offsets.
thx!
hofrat
next prev parent reply other threads:[~2012-10-26 12:36 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-26 12:22 [Xenomai] Seeking recommendations for SBC with precision timer Howard Lee Harkness
2012-10-26 12:36 ` Nicholas Mc Guire [this message]
[not found] ` <CAHzTO8nxt5KcK_mekgArQXqdLGQC=d3bWFBse=H6cZmpRvon-A@mail.gmail.com>
2012-10-26 14:46 ` Howard Lee Harkness
2012-10-26 15:11 ` Gilles Chanteperdrix
2012-10-26 16:34 ` Howard Lee Harkness
2012-10-26 17:06 ` Gilles Chanteperdrix
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