On Sun, Apr 4, 2010 at 10:39 AM, Xiaofan Chen <xiaof...@gmail.com> wrote:
> Since libusb-1.0 Windows backend is API compatible
> with libusb-1.0 under Linux, so I think it is already quite
> close to work.
>
> So I copied libusb-1.0.dll to c:\windows\system32 and then
> changed a few lines in libusb10.py.
>
>It seems to built, but then the test program failed. I think this
> is because the default libusb-1.0.dll is using stdcall calling convention.
So I rebuild libusb-1.0.dll with cdecl calling convention.
This time the test suite goes much further. I know this
is not a proper fix since libusb-1.0.dll will be using
stdcall calling convention. But this is just for testing.
The error is rather strange though.
c:\pyusb\pyusb\tests>c:\Python26\python.exe testall.py
Adding BackendTest(usb.backend.libusb10) to test suite...
Adding BackendTest(usb.backend.libusb01) to test suite...
Adding DeviceTest(usb.backend.libusb10) to test suite...
Adding ConfigurationTest(usb.backend.libusb10) to test suite...
Adding InterfaceTest(usb.backend.libusb10) to test suite...
Adding EndpointTest(usb.backend.libusb10) to test suite...
EF...........
======================================================================
ERROR: runTest (test_backend.BackendTest)
----------------------------------------------------------------------
Traceback (most recent call last):
File "c:\cygwin\home\mcuee\mcu\pyusb\pyusb\tests\test_backend.py", line 50, in
runTest
self.test_open_device()
File "c:\cygwin\home\mcuee\mcu\pyusb\pyusb\tests\test_backend.py", line 120,
in test_open_device
self.handle = self.backend.open_device(self.dev)
File "c:\Python26\lib\site-packages\usb\backend\libusb10.py", line 415, in
open_device
_check(_lib.libusb_open(dev.devid, byref(handle)))
File "c:\Python26\lib\site-packages\usb\backend\libusb10.py", line 332, in
_check
raise USBError(_str_error[retval.value])
USBError: Access denied (insufficient permissions)
======================================================================
FAIL: runTest (test_backend.BackendTest)
----------------------------------------------------------------------
Traceback (most recent call last):
File "c:\cygwin\home\mcuee\mcu\pyusb\pyusb\tests\test_backend.py", line 45, in
runTest
self.test_enumerate_devices()
File "c:\cygwin\home\mcuee\mcu\pyusb\pyusb\tests\test_backend.py", line 68, in
test_enumerate_devices
self.fail('PyUSB test device not found')
AssertionError: PyUSB test device not found
----------------------------------------------------------------------
Ran 13 tests in 0.390s
FAILED (failures=1, errors=1)
--
Xiaofan http://mcuee.blogspot.com
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