libusb performance on 8.1
Daniel O'Connor
doconnor at gsoft.com.au
Fri Feb 4 04:49:08 UTC 2011
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 :(
>
> 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.
>
> 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
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