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From: Roland Stigge <stigge@antcom.de>
To: Stefan Roese <stefan.roese@gmail.com>
Cc: xenomai@xenomai.org
Subject: Re: [Xenomai] GPIO in Xenomai
Date: Wed, 28 Nov 2012 09:44:09 +0100	[thread overview]
Message-ID: <50B5CED9.2000600@antcom.de> (raw)
In-Reply-To: <50B5B966.4080506@gmail.com>

On 11/28/2012 08:12 AM, Stefan Roese wrote:
> I'm looking for a way to use the SoC GPIO's (MPC5200) in an RT thread.
> Accessing them via the sysfs (the Linux userspace way) is not an option
> since we need to access the GPIO's at a quite high frequency.
> 
> How could the Linux gpiolib infrastructure best be exposed to RT
> threads? Has this been discussed before? Any ideas about the "best"
> approach here?

Have you seen my block gpio patches (v7) that I posted recently to the
kernel list? It now contains a dev interface - much faster than sysfs,
and can operate on several GPIOs at once.

I can re-post here if it helps.

Thanks,

Roland


  reply	other threads:[~2012-11-28  8:44 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-11-28  7:12 [Xenomai] GPIO in Xenomai Stefan Roese
2012-11-28  8:44 ` Roland Stigge [this message]
2012-11-28  8:48   ` Stefan Roese
2012-11-28  9:04     ` Roland Stigge

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