Re: [pyusb-users] Error doing control transfer

[Wander L. C. <wan...@gm...>]

2013/10/3 vvyogi . <vv...@gm...>:
>> Try to put it in C:\Python27
>
> That made no difference.
>
> Out of curiosity, I removed the dll from System32 directory and yet pyUsb
> didn't complained anything. This inspires me to ask "Where exactly is
> pyUsb's backend? Which dll is it using?"
>
> And Finally, I wiped out the python distribution completely and tried with a
> fresh install. I installed only pyUSB( master branch from github ) Log seems
> to be changed:
>
>> 2013-10-03 23:44:23,200 DEBUG:usb.backend.libusb1:_LibUSB.__init__(<WinDLL
>> 'C:\openocd-0.7.0\bin\libusb-1.0.dll', handle 6b600000 at 1804490>)

libusb 1.0 is loading from here 'C:\openocd-0.7.0\bin\libusb-1.0.dll'.
To use libusb-win32, you either have to remove this file or force the
backend.

>
> The error code is same "[Errno 2] Entity not found" however, pyUsb seems to
> be using the libusb1 backend now.
>
> I don't really understand whats going on here. Is there anyway I can make it
> work?
>

I am trying to isolate the problem. I suspect your C# code worked
because in C# you were using libusb-win32, and that's because I asked
you to give libusb-win32 a try.


-- 
Best Regards,
Wander Lairson Costa