Re: [pyusb-users] Error doing control transfer

[vvyogi . <vv...@gm...>]

It throws ImportError

ImportError: No module named libusb0

Does that means I don't have libusb-win32 installed on my PC.

The package that I downloaded from sourceForge has follow Directory
Structure:

libusb-win32-bin-1.2.6.0
    |
    |---> bin
    |       |
    |       |-->amd64(dir)
    |       |
    |       |-->ia64(dir)
    |       |
    |       |--> x86(dir)
    |       |        |
    |       |        |--> install-filter
    |       |        |
    |       |        |--> install-filter-win     <------ This one does not
lists the vid/pid of my device
    |       |        |
    |       |        |--> testlibusb.exe
    |       |        |
    |       |        |--> testlibusb-win.exe
    |       |
    |       |--> inf-wizard.exe              <------ This one creates a
inf/driver for my device and after installing the driver my c# app works.
    |
    |
    | -->examples(dir)
    |
    |
    |---> includes(dir)
    |
    |
    |--->lib(dir)
            |
            |-->bcc
            |
            |-->dynamic
            |
            |-->gcc
            |
            |-->msvc
            |
            |-->msvc_i64
            |
            |-->msvc_x64

Tell me, what am I missing?


On Wed, Oct 2, 2013 at 9:44 PM, Wander Lairson Costa <
wan...@gm...> wrote:

> 2013/10/2 vvyogi . <vv...@gm...>:
> >> Everything seems fine, could you try with libusb-win32 backend? If you
> >> uninstall libusb 1.0 and install libusbw-win32 you can get that
> >
> >
> > How do I do that ?
> > Whats the procedure to switch the pyUSB backend.
> >
>
> Do you have libusb-win32 installed? If so, just do that:
>
> import usb.backend.libusb0
>
> b = usb.backend.libusb0.get_backend()
> usb.core.find(backend=b, ...)
>
> --
> Best Regards,
> Wander Lairson Costa
>
>
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