[Libusb-win32-devel] Re: Could not claim interface- requested resource in use.

[Diego . <di...@gm...>]

you can use the usbview.exe to know the number of interface and
configuration  that you need to claim and set. I had this problem because
the number of interface and configuration was incorrect. In your email you
write -22 (EINVAL) and -5 (EIO) how do you know the name of this errors? I
had read the documentation at http://libusb.sourceforge.net/doc/ but this
errors are not documented.