From owner-freebsd-hackers@FreeBSD.ORG Sat Apr 9 04:02:26 2005 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 12A6916A4CE for ; Sat, 9 Apr 2005 04:02:26 +0000 (GMT) Received: from srv1.cosmo-project.de (srv1.cosmo-project.de [213.83.6.106]) by mx1.FreeBSD.org (Postfix) with ESMTP id 19F6843D49 for ; Sat, 9 Apr 2005 04:02:25 +0000 (GMT) (envelope-from ticso@cicely12.cicely.de) Received: from cicely5.cicely.de (cicely5.cicely.de [10.1.1.7]) (authenticated bits=0)j3942Anp027997 (version=TLSv1/SSLv3 cipher=EDH-RSA-DES-CBC3-SHA bits=168 verify=OK); Sat, 9 Apr 2005 06:02:12 +0200 (CEST) (envelope-from ticso@cicely12.cicely.de) Received: from cicely12.cicely.de (cicely12.cicely.de [IPv6:3ffe:400:8d0:301::12]) by cicely5.cicely.de (8.12.10/8.12.10) with ESMTP id j3941Khs085927 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Sat, 9 Apr 2005 06:01:21 +0200 (CEST) (envelope-from ticso@cicely12.cicely.de) Received: from cicely12.cicely.de (localhost [127.0.0.1]) by cicely12.cicely.de (8.12.11/8.12.11) with ESMTP id j3941K9H008641; Sat, 9 Apr 2005 06:01:20 +0200 (CEST) (envelope-from ticso@cicely12.cicely.de) Received: (from ticso@localhost) by cicely12.cicely.de (8.12.11/8.12.11/Submit) id j3941JmN008640; Sat, 9 Apr 2005 06:01:19 +0200 (CEST) (envelope-from ticso) Date: Sat, 9 Apr 2005 06:01:18 +0200 From: Bernd Walter To: Julian Elischer Message-ID: <20050409040118.GZ96690@cicely12.cicely.de> References: <16982.46075.115518.130213@canoe.dclg.ca> <4256B5EB.9080506@savvis.net> <16982.47024.135663.645297@canoe.dclg.ca> <20050408190514.GS96690@cicely12.cicely.de> <16983.465.572693.73195@canoe.dclg.ca> <20050408233301.GW96690@cicely12.cicely.de> <4257181F.1040904@savvis.net> <42572A96.4090205@elischer.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <42572A96.4090205@elischer.org> X-Operating-System: FreeBSD cicely12.cicely.de 5.2-CURRENT alpha User-Agent: Mutt/1.5.6i X-Spam-Status: No, hits=-4.9 required=3.0 tests=BAYES_00 autolearn=no version=2.64 X-Spam-Report: * -4.9 BAYES_00 BODY: Bayesian spam probability is 0 to 1% * [score: 0.0000] X-Spam-Checker-Version: SpamAssassin 2.64 (2004-01-11) on cicely12.cicely.de cc: freebsd-hackers@freebsd.org cc: ticso@cicely.de cc: David Gilbert Subject: Re: Tricky USB device. X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list Reply-To: ticso@cicely.de List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 09 Apr 2005 04:02:26 -0000 On Fri, Apr 08, 2005 at 06:06:30PM -0700, Julian Elischer wrote: > Maksim Yevmenkin wrote: > >Bernd Walter wrote: > >>On Fri, Apr 08, 2005 at 06:12:33PM -0400, David Gilbert wrote: > >>Yes - you must use 1 - there is only one out-endpoint. 0x81 is for > >>receiving data and endpoint 0 is the mandandory control endpoint. > >>Interrupt Endpoints are not variable in size. Both interrupt > >>endpoints are 8 Bytes, so you must read and write exact 8 Bytes per > >>transfer - 5 shouldn't work for USB compliant devices. > > > > the device may accept 5 bytes of data. if it's feeling charitable. > but you probably should send teh number of bytes suggested by the > endpoint descriptor. > that number is at least guaranteed to work. Hang on.. I'm trying to > remember if the 8 includes the header.. The size is just the payload - I was just wrong, as interrupts transfers are allowed to be smaller. However the device should make use of 8 Byte packets or not say 8 Bytes at all. > if so then you probably only get 5 bytes of data space.. I need to go > back to my USB book. > > From what I saw before, you may need to set the configuration number > to 1 before it will do anything. > so you may need to do a setConfiguration(1) ugen will have done that already, otherwise it wouldn't know about the devnodes for the interrupt endpoints in the first configuration. -- B.Walter BWCT http://www.bwct.de bernd@bwct.de info@bwct.de