From owner-freebsd-arm@FreeBSD.ORG Tue Jul 20 17:03:45 2010 Return-Path: Delivered-To: freebsd-arm@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id A3AA01065670 for ; Tue, 20 Jul 2010 17:03:45 +0000 (UTC) (envelope-from ticso@cicely7.cicely.de) Received: from raven.bwct.de (raven.bwct.de [85.159.14.73]) by mx1.freebsd.org (Postfix) with ESMTP id 14B658FC18 for ; Tue, 20 Jul 2010 17:03:44 +0000 (UTC) Received: from mail.cicely.de ([10.1.1.37]) by raven.bwct.de (8.13.4/8.13.4) with ESMTP id o6KH3fSZ023925 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Tue, 20 Jul 2010 19:03:41 +0200 (CEST) (envelope-from ticso@cicely7.cicely.de) Received: from cicely7.cicely.de (cicely7.cicely.de [10.1.1.9]) by mail.cicely.de (8.14.3/8.14.3) with ESMTP id o6KH3dKW034880 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Tue, 20 Jul 2010 19:03:39 +0200 (CEST) (envelope-from ticso@cicely7.cicely.de) Received: from cicely7.cicely.de (localhost [127.0.0.1]) by cicely7.cicely.de (8.14.2/8.14.2) with ESMTP id o6KH3dUE038503; Tue, 20 Jul 2010 19:03:39 +0200 (CEST) (envelope-from ticso@cicely7.cicely.de) Received: (from ticso@localhost) by cicely7.cicely.de (8.14.2/8.14.2/Submit) id o6KH3bOq038502; Tue, 20 Jul 2010 19:03:37 +0200 (CEST) (envelope-from ticso) Date: Tue, 20 Jul 2010 19:03:37 +0200 From: Bernd Walter To: Greg Ansley Message-ID: <20100720170337.GB28908@cicely7.cicely.de> References: <4C4590E5.1020407@ansley.com> <201007201405.43686.hselasky@c2i.net> <4C45A47A.8070403@ansley.com> <20100720135858.GA28908@cicely7.cicely.de> <4C45C2AF.9030608@ansley.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4C45C2AF.9030608@ansley.com> X-Operating-System: FreeBSD cicely7.cicely.de 7.0-STABLE i386 User-Agent: Mutt/1.5.11 X-Spam-Status: No, score=-1.9 required=5.0 tests=ALL_TRUSTED=-1, BAYES_00=-1.9, PLING_QUERY=0.994, T_RP_MATCHES_RCVD=-0.01 autolearn=no version=3.3.0 X-Spam-Checker-Version: SpamAssassin 3.3.0 (2010-01-18) on spamd.cicely.de Cc: "freebsd-arm@FreeBSD.org" , Bernd Walter , ticso@cicely.de Subject: Re: AT91RM9200: USB broken? No! X-BeenThere: freebsd-arm@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: ticso@cicely.de List-Id: Porting FreeBSD to the StrongARM Processor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 20 Jul 2010 17:03:45 -0000 On Tue, Jul 20, 2010 at 11:37:19AM -0400, Greg Ansley wrote: > It's a QFP so the errors are OK. > > Turned out to be a bad solder joint on pin 1 of the USB connector > (power). Connector on this card is not very mechanically stable with the > mounting posts going into huge worthless holes. :-( That makes sense. A device pulls up one of the data line up to 3.3V with a 1.5k Ohm resistor to show presense. A bus powered device however can't do this without having power and a self powered device isn't allowd to supply current into data wires without sensing the 5V, although many self powered devices violate this rule. So in fact a few self powered devices might function without 5V from USB, although they are not allowed to. > Error messages were just a red herring, after not having seen them for > weeks while working on the SAM9G20. > > Greg > > On 7/20/10 9:58 AM, Bernd Walter wrote: > >So it looks like your device isn't noticed as being connected at all, > >which is a bit strange because your error messages clearly show that > >it got the faulty device connected from the secondary port. > > > > > _______________________________________________ > freebsd-arm@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-arm > To unsubscribe, send any mail to "freebsd-arm-unsubscribe@freebsd.org" -- B.Walter http://www.bwct.de Modbus/TCP Ethernet I/O Baugruppen, ARM basierte FreeBSD Rechner uvm.