From owner-freebsd-usb@FreeBSD.ORG Fri Feb 4 04:49:07 2011 Return-Path: Delivered-To: freebsd-usb@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id DFA0D106566B for ; Fri, 4 Feb 2011 04:49:07 +0000 (UTC) (envelope-from doconnor@gsoft.com.au) Received: from cain.gsoft.com.au (cain.gsoft.com.au [203.31.81.10]) by mx1.freebsd.org (Postfix) with ESMTP id 61B5E8FC0C for ; Fri, 4 Feb 2011 04:49:06 +0000 (UTC) Received: from ur.gsoft.com.au (Ur.gsoft.com.au [203.31.81.44]) (authenticated bits=0) by cain.gsoft.com.au (8.14.4/8.14.3) with ESMTP id p144mvR9036554 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=NO); Fri, 4 Feb 2011 15:18:57 +1030 (CST) (envelope-from doconnor@gsoft.com.au) Mime-Version: 1.0 (Apple Message framework v1082) Content-Type: text/plain; charset=us-ascii From: "Daniel O'Connor" In-Reply-To: Date: Fri, 4 Feb 2011 15:18:56 +1030 Content-Transfer-Encoding: quoted-printable Message-Id: References: <9CF6C32F-E230-446B-94FC-C57F0F02B0E4@gsoft.com.au> <201102030822.49266.hselasky@c2i.net> <4DAFAF80-746B-4272-86CC-BB284E59D4F6@gsoft.com.au> <201102031156.37148.hselasky@c2i.net> To: "Daniel O'Connor" X-Mailer: Apple Mail (2.1082) X-Spam-Score: -2.51 () ALL_TRUSTED,BAYES_00,T_RP_MATCHES_RCVD X-Scanned-By: MIMEDefang 2.67 on 203.31.81.10 Cc: freebsd-usb@freebsd.org Subject: Re: libusb performance on 8.1 X-BeenThere: freebsd-usb@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: FreeBSD support for USB List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 04 Feb 2011 04:49:08 -0000 On 04/02/2011, at 14:32, Daniel O'Connor wrote: > OK, I have that, it seems I need to work on the firmware as it's not = sending data properly when I set it to iso. I'll work on that and try = and figure it out. Unfortunately there isn't much example code on = isochronous data transfer with the FX2 :( >=20 > However I see the requests return saying they are complete but the = amount of data transferred is 0. Setting the "short not OK" flag doesn't = change the behaviour. >=20 > I'm not sure if this is a bug in libusb, expected behaviour, or a bug = in my program. I think this might be the FX2 sending zero length packets because its = FIFO is empty. Now to figure out why it isn't triggering :-/ -- Daniel O'Connor software and network engineer for Genesis Software - http://www.gsoft.com.au "The nice thing about standards is that there are so many of them to choose from." -- Andrew Tanenbaum GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C