From mboxrd@z Thu Jan  1 00:00:00 1970
Date: Thu, 8 Jan 2015 16:39:47 +0100
From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
Message-ID: <20150108153947.GD21505@hermes.click-hack.org>
References: <87BB06E7C07D514A96969FF11282F7954DEB98@MXSTU2012.hpi.uni-potsdam.de>
 <20150108153519.GC21505@hermes.click-hack.org>
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Subject: Re: [Xenomai] Is there a specification?
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To: "Eichenberg, Marius" <Marius.Eichenberg@student.hpi.uni-potsdam.de>
Cc: "xenomai@xenomai.org" <xenomai@xenomai.org>

On Thu, Jan 08, 2015 at 04:35:19PM +0100, Gilles Chanteperdrix wrote:
> On Thu, Jan 08, 2015 at 03:13:10PM +0000, Eichenberg, Marius wrote:
> > Hey folks, 
> > we're a team of two students at a university in Germany.
> > 
> > Currently we're trying to evaluate how easy it is to map tasks
> > from Autosar (OSEK) to Xenomai. Therefore we're looking for a
> > specification of Xenomai. Right now we're dealing with the API,
> > but this is acutally a little bulky.
> 
> The API documentation is big because it documents several
> interfaces, the underlying common interface as well as several skins
> implemented on top of this common interface. But implementing a new
> interface such as OSEK means implementing a new skin, on top of the
> common interface only.
> 
> For Xenomai 2.x, this common interface resides in kernel-space and
> is documented here:
> https://xenomai.org/documentation/xenomai-2.6/html/api/group__nucleus.html
> 
> For Xenomai 3.x (which is recommended for starting a new
> development), this common interface moved to user-space, is based on
> the POSIX interface and is documented here:
> https://xenomai.org/documentation/xenomai-3/html/xeno3prm/group__alchemy.html

Sorry, wrong link. The Alchemy interface is a skin, like the OSEK
skin, so you could use it as an example for implementing a new skin.

The common interface for user-space skins is now posix, with the
copperplate library masking differences between Xenomai posix
implementation and Linux posix implementation. The alchemy or
vxworks skins are example of using posix and copperplate to
implement a new skin.

-- 
					    Gilles.