Could be that another driver has connected to the device. I had this
when I was trying to use libusb-win32 to connect to a mouse (just to
check how to use it!) - I had to overwrite the mouse driver with libusb,
even when using the filter driver. I'm a newbie too, so can't help much
unfortunately.
Mark.
Jon Burroughs wrote:
> Hello,
>
>
>
> I am developing my first USB application using libusb-win32. (Read: I
> am a newbie.) I was getting -22 (EINVAL) returned by
> usb_claim_interface, until I read some of the posts and learned that I
> needed to call usb_set_configuration first. Now that I am doing that,
> I am getting errno code -5 (EIO), and usb_strerror() returns the
> following message "could not claim interface 0, error: The requested
> resource is in use." Can anyone give me any suggestions?
>
>
>
> Best regards,
>
> Jon
>
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