Please, try to find the device from python prompt, just do it:
import usb.core
dev = usb.core.find(idVendor=0xFFFE)
assert dev is not None
Wander
2010/4/4 Xiaofan Chen <xiaof...@gmail.com>:
> On Sat, Apr 3, 2010 at 10:54 PM, Wander Lairson
> <wander.lair...@gmail.com> wrote:
>> Hmmm... Really strange, isn't PyUSB 0.4 already installed? I have
>> managed test scripts to silently ignore test when test device is not
>> present, to when I am testing certain features which don't require
>> hardware...
>
> Now I know the reason, because there is no libusb-1.0.so.* under
> Freebsd 8/9. libusb.so (point to libusb.so.2) is both for libusb 0.1
> wrapper and the libusb 1.0 wrapper.
>
> [mc...@myfreebsd ~]$ ls -la /usr/lib/libusb*
> -r--r--r-- 1 root wheel 64434 Apr 4 16:04 /usr/lib/libusb.a
> lrwxr-xr-x 1 root wheel 11 Apr 4 16:04 /usr/lib/libusb.so ->
> libusb.so.2
> -r--r--r-- 1 root wheel 52968 Apr 4 16:04 /usr/lib/libusb.so.2
> -r--r--r-- 1 root wheel 68340 Apr 4 16:04 /usr/lib/libusb_p.a
> -r--r--r-- 1 root wheel 11926 Nov 21 22:54 /usr/lib/libusbhid.a
> lrwxr-xr-x 1 root wheel 14 Nov 21 22:54 /usr/lib/libusbhid.so ->
> libusbhid.so.4
> -r--r--r-- 1 root wheel 11400 Nov 21 22:54 /usr/lib/libusbhid.so.4
>
> So I further changed libusb10.py. With the following changes,
> it goes further. Still it could not find the test device even though
> lsusb shows the device is there.
>
> def _load_library():
> if sys.platform == 'win32':
> libname = ctypes.util.find_library('libusb-1.0')
> elif sys.platform == 'freebsd8' or sys.platform == 'freebsd9':
> libname = ctypes.util.find_library('usb')
> else:
> libname = ctypes.util.find_library('usb-1.0')
> if libname is None:
> raise OSError('USB library could not be found')
> return CDLL(libname)
>
> [mc...@myfreebsd ~/Desktop/build/pyusb/pyusb/trunk/tests]$ sudo python
> testall.py
> 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...
> Adding BackendTest(usb.backend.libusb10) to test suite...
> Adding BackendTest(usb.backend.libusb01) to test suite...
> ............F
> ======================================================================
> FAIL: runTest (test_backend.BackendTest)
> ----------------------------------------------------------------------
> Traceback (most recent call last):
> File "/usr/home/mcuee/Desktop/build/pyusb/pyusb/trunk/tests/test_backend.py",
> line 45, in runTest
> self.test_enumerate_devices()
> File "/usr/home/mcuee/Desktop/build/pyusb/pyusb/trunk/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 1.892s
>
> FAILED (failures=1)
>
>
> --
> Xiaofan http://mcuee.blogspot.com
>
> ------------------------------------------------------------------------------
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