Look in the errno.h standard header - that's how I find them. Not sure
if there's a better way.
Diego . wrote:
> 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.
>
>
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