2012/3/30 Stephen Richards <morphy_richa...@hotmail.com>:
> Edit
>
> Have tried this as well:
>
> msg = [0x00, 0x00, 0x01]
>
> dev.write(0x81, msg, 0)
>
>
> But still same error.
>
>
>
>
>
> import usb.core
> import usb.util
>
> # find our device
> dev = usb.core.find(idVendor=0x1267, idProduct=0x0000)
>
> # was it found?
> if dev is None:
>     raise ValueError('Device not found')
>
> # set the active configuration. With no arguments, the first
> # configuration will be the active one
> dev.set_configuration()
>
> msg = [0x00, 0x00, 0x01]
>
> dev.write(0x81, msg, 0)
>
>

The 0x81 is a IN endpoint, you are not allowed to write on it.
Probably you send data to your device through control requests.

-- 
Best Regards,
Wander Lairson Costa

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