From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 11675 invoked by alias); 27 Aug 2007 07:33:03 -0000 Received: (qmail 11623 invoked by uid 22791); 27 Aug 2007 07:32:57 -0000 X-Spam-Check-By: sourceware.org Received: from londo.lunn.ch (HELO londo.lunn.ch) (80.238.139.98) by sourceware.org (qpsmtpd/0.31) with ESMTP; Mon, 27 Aug 2007 07:32:50 +0000 Received: from lunn by londo.lunn.ch with local (Exim 3.36 #1 (Debian)) id 1IPZ5Y-0007fL-00; Mon, 27 Aug 2007 09:32:44 +0200 Date: Mon, 27 Aug 2007 07:33:00 -0000 From: Andrew Lunn To: wavecom wavecom Cc: ecos-discuss@ecos.sourceware.org Message-ID: <20070827073244.GW31057@lunn.ch> Mail-Followup-To: wavecom wavecom , ecos-discuss@ecos.sourceware.org References: <817505.6538.qm@web60717.mail.yahoo.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <817505.6538.qm@web60717.mail.yahoo.com> User-Agent: Mutt/1.5.16 (2007-06-11) X-IsSubscribed: yes Mailing-List: contact ecos-discuss-help@ecos.sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: ecos-discuss-owner@ecos.sourceware.org Subject: Re: [ECOS] USB-CDC eCos configuration X-SW-Source: 2007-08/txt/msg00141.txt.bz2 On Mon, Aug 27, 2007 at 12:20:20AM -0700, wavecom wavecom wrote: > Hi All, > > I'm working on USB-CDC eCos based device. I presume you are writing your own USB-CDC driver? I don't think one exists for eCos yet. > I've met some problems with initializing the device: Windows > recognizes the device as another COM port, but when I'm trying to > open the port by the hyperterminal, I have message "Could not open > COM port". What would be the cause of such behavior, below result of > lsusb -vvv command on Linux (I can also send my c-code of USB > initialization if necessary). Do you have a trace of the USB messages sent backwards and forwards when the device is opened? Does your driver handle all these messages? > Second question is, how to set > Functional Descriptors like CDC Header, CDC ACM, CDC Union, CDC Call > Management? Are these parameters necessary for proper operating the > USB-CDC device? What does the standard say? Is there a standard? Is this part of HID? What does Linux make of this device? Maybe you can get better diagnostics from Linux than from M$. At least with Linux you have the source code so you can find out why Linux does not like your driver.... Andrew -- Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss