From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 30406 invoked by alias); 7 Jun 2006 13:43:08 -0000 Received: (qmail 30396 invoked by uid 22791); 7 Jun 2006 13:43:06 -0000 X-Spam-Check-By: sourceware.org Received: from smtp4-g19.free.fr (HELO smtp4-g19.free.fr) (212.27.42.30) by sourceware.org (qpsmtpd/0.31) with ESMTP; Wed, 07 Jun 2006 13:42:59 +0000 Received: from listel (pas38-4-82-233-120-164.fbx.proxad.net [82.233.120.164]) by smtp4-g19.free.fr (Postfix) with SMTP id 1772D5479C for ; Wed, 7 Jun 2006 15:42:56 +0200 (CEST) Date: Wed, 07 Jun 2006 13:43:00 -0000 From: GONZALEZ Laurent To: ecos-discuss@ecos.sourceware.org Message-ID: <20060607154256.07022546@listel> In-Reply-To: <4486946D.4070706@tiscali.be> References: <445B3D16.1010001@gdsys.de> <20060505122459.GA27092@lunn.ch> <4486946D.4070706@tiscali.be> X-Mailer: Sylpheed-Claws 0.9.12a (GTK+ 1.2.10; i586-mandrake-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: quoted-printable X-IsSubscribed: yes Mailing-List: contact ecos-discuss-help@ecos.sourceware.org; run by ezmlm Precedence: bulk List-Subscribe: List-Archive: List-Post: List-Help: , Sender: ecos-discuss-owner@ecos.sourceware.org Subject: Re: [ECOS] redboot with console baudrate 115200 X-SW-Source: 2006-06/txt/msg00076.txt.bz2 On Wed, 07 Jun 2006 10:55:09 +0200 J=FCrgen Lambrecht wrote: >=20 > The strange thing is that on the eb55 demoboard, 38400 downloads are no=20 > problem. Do both boards use the same quartz ? Is internal PLL programmed in a simila= r way ? Are the timing/width of SRAM or flash access identical ? It may look strange, but at 38400, the one-char buffer time-frame does not = meet the critical path of xmodem routine, and sometime char is lost. Remind= that this path increases a lot if you try to download an elf (compared to = raw). A few years ago there has been discussion here about a buffered serial driv= er (in kernel configurations, using interrupts), but I am not sure that the= hal-serial used by redboot has been enhanced in the same way. best regards. --=20 GONZALEZ Laurent ----------------------------------------- TRANGO Systems - ELSYS Design Group 74, avenue des Martyrs 38000 Grenoble Tel: 33 (0)4 76 12 28 44 Fax: 33 (0)4 76 12 28 49 ----------------------------------------- Trango, the real-time embedded hypervisor http://www.trango-systems.com -- Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss