libusb0.dll and libusb0.sys are in C:\Windows\System32
Dan
On Tue, Dec 20, 2011 at 11:39 AM, Wander Lairson Costa
<wander.lair...@gmail.com> wrote:
>
>
> 2011/12/20 JA <metala...@gmail.com>
>>
>> Ok I understand now. Here is the log -
>>
>> 2011-12-20 11:14:03,615 ERROR:usb.backend.libusb10:Error loading
>> libusb 1.0 backend
>> Traceback (most recent call last):
>> File "C:\Python27\lib\site-packages\usb\backend\libusb10.py", line
>> 648, in get_backend
>> _lib = _load_library()
>> File "C:\Python27\lib\site-packages\usb\backend\libusb10.py", line
>> 198, in _load_library
>> l = WinDLL(libname)
>> File "C:\Python27\lib\ctypes\__init__.py", line 353, in __init__
>> self._handle = _dlopen(self._name, mode)
>> TypeError: expected string or Unicode object, NoneType found
>> 2011-12-20 11:14:03,670 ERROR:usb.backend.openusb:Error loading OpenUSB
>> backend
>> Traceback (most recent call last):
>> File "C:\Python27\lib\site-packages\usb\backend\openusb.py", line
>> 701, in get_backend
>> _lib = _load_library()
>> File "C:\Python27\lib\site-packages\usb\backend\openusb.py", line
>> 248, in _load_library
>> raise OSError('USB library could not be found')
>> OSError: USB library could not be found
>> 2011-12-20 11:14:03,686 ERROR:usb.backend.libusb01:Error loading
>> libusb 0.1 backend
>> Traceback (most recent call last):
>> File "C:\Python27\lib\site-packages\usb\backend\libusb01.py", line
>> 576, in get_backend
>> _lib = _load_library()
>> File "C:\Python27\lib\site-packages\usb\backend\libusb01.py", line
>> 201, in _load_library
>> return CDLL(libname)
>> File "C:\Python27\lib\ctypes\__init__.py", line 353, in __init__
>> self._handle = _dlopen(self._name, mode)
>> TypeError: expected string or Unicode object, NoneType found
>>
>
> It feels like the libusb DLL was not found. Can you tell where it is
> located?
>
> --
> Best Regards,
> Wander Lairson Costa
>
>
>
> ------------------------------------------------------------------------------
> Write once. Port to many.
> Get the SDK and tools to simplify cross-platform app development. Create
> new or port existing apps to sell to consumers worldwide. Explore the
> Intel AppUpSM program developer opportunity. appdeveloper.intel.com/join
> http://p.sf.net/sfu/intel-appdev
> _______________________________________________
> pyusb-users mailing list
> pyusb-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/pyusb-users
>
------------------------------------------------------------------------------
Write once. Port to many.
Get the SDK and tools to simplify cross-platform app development. Create
new or port existing apps to sell to consumers worldwide. Explore the
Intel AppUpSM program developer opportunity. appdeveloper.intel.com/join
http://p.sf.net/sfu/intel-appdev
_______________________________________________
pyusb-users mailing list
pyusb-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/pyusb-users
