Date: Fri, 4 Feb 2011 15:18:56 +1030 From: "Daniel O'Connor" <doconnor@gsoft.com.au> To: "Daniel O'Connor" <doconnor@gsoft.com.au> Cc: freebsd-usb@freebsd.org Subject: Re: libusb performance on 8.1 Message-ID: <C68D8E23-726F-4426-AAD4-DEA8FEBC7B4D@gsoft.com.au> In-Reply-To: <C322365A-C771-4BA6-BD25-E9BD846542D3@gsoft.com.au> 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> <C322365A-C771-4BA6-BD25-E9BD846542D3@gsoft.com.au>
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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
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