Re: [Libusb-devel] Synchronous Interrupt support

[Johannes E. <joh...@er...>]

That's good news, but I can't figure out why you would get that error on
the second call.

Are you using the same buffer, size and endpoint?

JE

On Mon, Mar 17, 2003, David Glance <da...@cs...> wrote:
> Getting better. I can now write and then read. However, on the second 
> write I get this error again:
> 
> USB error: error submitting interrupt URB: Invalid argument
> 
> david
> 
> Johannes Erdfelt wrote:
> 
> >No, all of the HCDs should work fine. I was just curious which one you
> >were using since sometimes the return codes in corner cases will differ.
> >
> >A timeout of 1000 (1 second) sounds fine.
> >
> >Let me know how it goes when you test again.
> >
> >JE
> >
> >On Mon, Mar 17, 2003, David Glance <da...@cs...> wrote:
> >  
> >
> >>it is usb-uhci - I can try ohci if you think it would be different. The 
> >>timeout is set to 1000 - I will check this out again tonight and let you 
> >>know how I get on.
> >>
> >>Johannes Erdfelt wrote:
> >>
> >>    
> >>
> >>>-103 (on x86 atleast) is -ECONNABORTED. That looks like it's a timeout
> >>>condition. Are you using usb-uhci?
> >>>
> >>>I've checked in some changes that should handle the timeout case better.
> >>>
> >>>However, you're writing which would mean in this case the device kept on
> >>>NAKing, assuming the code in libusb is correct. That's kinda rare, so I
> >>>don't think that would happen. What is LINUX_USB_TIMEOUT set to?
> >>>
> >>>Unfortunately, I don't have easy access to any devices that use
> >>>interrupt endpoints, so I'm testing this with a duplicate of this
> >>>function but using control transfers.
> >>>
> >>>JE
> >>>
> >>>On Mon, Mar 17, 2003, David Glance <da...@cs...> wrote:
> >>> 
> >>>
> >>>      
> >>>
> >  
> >
> 
> 
> 
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