From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 22165 invoked by alias); 21 Jun 2011 11:05:00 -0000 Received: (qmail 22155 invoked by uid 22791); 21 Jun 2011 11:04:59 -0000 X-SWARE-Spam-Status: No, hits=-0.9 required=5.0 tests=AWL,BAYES_40,RCVD_IN_DNSWL_NONE X-Spam-Check-By: sourceware.org Received: from mtaout03-winn.ispmail.ntl.com (HELO mtaout03-winn.ispmail.ntl.com) (81.103.221.49) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Tue, 21 Jun 2011 11:04:45 +0000 Received: from aamtaout03-winn.ispmail.ntl.com ([81.103.221.35]) by mtaout03-winn.ispmail.ntl.com (InterMail vM.7.08.04.00 201-2186-134-20080326) with ESMTP id <20110621110442.WBGI5301.mtaout03-winn.ispmail.ntl.com@aamtaout03-winn.ispmail.ntl.com>; Tue, 21 Jun 2011 12:04:42 +0100 Received: from cog.dallaway.org.uk ([213.106.80.48]) by aamtaout03-winn.ispmail.ntl.com (InterMail vG.3.00.04.00 201-2196-133-20080908) with ESMTP id <20110621110442.EMAE24017.aamtaout03-winn.ispmail.ntl.com@cog.dallaway.org.uk>; Tue, 21 Jun 2011 12:04:42 +0100 Received: from cog.dallaway.org.uk (cog.dallaway.org.uk [127.0.0.1]) by cog.dallaway.org.uk (8.13.8/8.13.8) with ESMTP id p5LB3tpp002150; Tue, 21 Jun 2011 12:03:55 +0100 Message-ID: <4E007A9B.70800@dallaway.org.uk> Date: Tue, 21 Jun 2011 11:05:00 -0000 From: John Dallaway User-Agent: Thunderbird 2.0.0.24 (X11/20101213) MIME-Version: 1.0 To: Frank Pagliughi , Christophe Coutand CC: eCos Development List Subject: Re: Eagle 100 (Stellaris LM3S6918) References: <4D809BF2.6040205@dallaway.org.uk> <4D8208F0.5010500@kses.net> <4DFA071F.4060504@mindspring.com> <4DFA0DAA.3000601@dallaway.org.uk> <1308233778.22353.4.camel@hp-study> <4DFA1320.7090500@mindspring.com> <4DFF64B3.9070507@mindspring.com> In-Reply-To: <4DFF64B3.9070507@mindspring.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Mailing-List: contact ecos-devel-help@ecos.sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Post: List-Help: , Sender: ecos-devel-owner@ecos.sourceware.org X-SW-Source: 2011-06/txt/msg00014.txt.bz2 Hi Frank and Christophe Frank Pagliughi wrote: > Hi, I was going to grab my SAM3 eval boards from the closet, but to make > space for them on my desk I had to put away the Micromint Eagle 100 > board that was sitting there. Then got to thinking the Eagle 100 would > be a really good board for eCos. It's a COTS board around a Stellaris > LM3S6918 with a decent amount of I/O. I'm not an Ethernet guy, so I > probably couldn't get networking going on the board, but could probably > manage the rest of the port pretty quickly. > > I looked at the existing Stellaris eCos port for the lm3s8xx, and > thought to make a corresponding lm3s6xxx. But on closer inspection, I > found 19 processors in the 6000 series, all with different memory sizes > and I/O. The only thing they share in common is that they have Ethernet > but not CAN. The 8000 series has Ethernet and CAN. The 5000 series has > CAN and USB. And so on... > > So the breakdown of the Stellaris series doesn't exactly mesh with eCos > directory structure, since the chip internals may have more in common > with chips across the different series than within it. > > So I'm at a loss on how to proceed. Any advice? A quick glance of the parametric search table suggests that the various sub-families of LM3S parts do indeed offer different permutations of on-chip peripherals. I expect that all these parts can be accommodated by extending the existing eCos LM3S8xx variant HAL package. Christophe, do you concur? John Dallaway eCos maintainer http://www.dallaway.org.uk/john