Re: [libusb] Timeouts then Access Denied Errors on Win 7

[Xiaofan C. <xia...@gm...>]

On Wed, Dec 3, 2014 at 4:47 AM, Richard Bryan <ra...@lu...> wrote:
>
> I'm not sure about those calls to libusb_init and libusb_exit.  That is
> pyusb, but from looking at its source I would expect the init call to occur
> only once at the beginning.
>
> One aspect of the program that clutters up the logs is that I perform a
> periodic check of all connected usb devices to see if a new device of a
> certain type has been connected or disconnected.  Pyusb does not have any
> asynchronous support, so I'm forced to continually enumerate all devices to
> detect this.

So you mean you have hotplug event on your system. Take note that
libusb Windows currently does not support hotplug. I think this is the
root cause of the problem.


-- 
Xiaofan