Re: [Libusb-devel] Problem with control message

[Stephan M. <ste...@we...>]

Linus Walleij <tr...@df...> schrieb am 17.06.04 12:37:49:
> 
> Thanks for portiong this splendid library to Win32!
> 
> Now I have a problem :-)
> 
> I claim device, configuration and interface (even altinterface to 0) as
> should be done, i.e.
> 
> dev = usb_open(device)
> usb_set_configuration(dev,1)
> usb_claim_interface(dev,0)
> usb_set_altinterface(dev,0) (tried to go without this, too)
> 
> This works fine. Then the problem occurs in usb_control_msg(): all
> messages fail with a -1 return code and the following string from
> usb_strerror():
> 
> "error sending control message: win error: The I/O operation has been
> aborted because of either a thread exit or an application request."
> 

This usually means that the device didn't respond to the request, i.e. a timeout 
occured. You are either sending or requesting wrong data, setting the timeout value
too low, or the device firmware isn't working correctly or isn't fully complaint to the
USB specifications.

BTW, there is are libusb-win32 related mailing list at <lib...@li...>,
which might be a better place to ask these Windows related questions.

Stephan


 
> Any ideas of what I might be doing wrong?...
> 
> Yours,
> Linus Walleij
> 
> 
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