On Mon, Apr 5, 2010 at 9:22 PM, Wander Lairson <wander.lair...@gmail.com> wrote:
> Maybe it is bug in the libusb01 backend. Please, try one more test
> when you have some time:
>
> import usb.core
> import usb.backend.libusb01
>
> b = usb.backend.libusb01.get_backend()
> assert b is not None
> dev = usb.core.find(idVendor=0xFFFE, backend = b)
> assert dev is not None
>
You are right. There seems to be a problem with the libusb01
backend under FreeBSD 8.
[mc...@myfreebsd /usr/home/mcuee]$ python
Python 2.6.4 (r264:75706, Feb 21 2010, 13:01:16)
[GCC 4.2.1 20070719 [FreeBSD]] on freebsd8
Type "help", "copyright", "credits" or "license" for more information.
>>> import usb.core
>>> import usb.backend.libusb01
>>> b = usb.backend.libusb01.get_backend()
>>> assert b is not None
>>> dev = usb.core.find(idVendor=0xFFFE,backend=b)
>>> assert dev is not None
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
AssertionError
>>> import usb.backend.libusb10
>>> a = usb.backend.libusb10.get_backend()
>>> assert a is not None
>>> dev=usb.core.find(idVendor=0xFFFE,backend=a)
>>> dev1=usb.core.find(idVendor=0xFFFE,backend=a)
>>> assert dev1 is not None
>>> import usb.backend.openusb
>>> c = usb.backend.openusb.get_backend()
>>> assert c is not None
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
AssertionError
>>>
So I remove the test of libusb01 backend in test_backend.py,
the tests go further. I understand that reset_device() can
be troublesome.
[mc...@myfreebsd ~/Desktop/build/pyusb/pyusb/trunk/tests]$ 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...
.......E...E
======================================================================
ERROR: runTest (test_integration.DeviceTest)
----------------------------------------------------------------------
Traceback (most recent call last):
File
"/usr/home/mcuee/Desktop/build/pyusb/pyusb/trunk/tests/test_integration.py",
line 61, in runTest
self.test_reset()
File
"/usr/home/mcuee/Desktop/build/pyusb/pyusb/trunk/tests/test_integration.py",
line 105, in test_reset
self.dev.reset()
File "/usr/local/lib/python2.6/site-packages/usb/core.py", line 550, in reset
self._ctx.backend.reset_device(self._ctx.handle)
File "/usr/local/lib/python2.6/site-packages/usb/backend/libusb10.py",
line 507, in reset_device
_check(_lib.libusb_reset_device(dev_handle))
File "/usr/local/lib/python2.6/site-packages/usb/backend/libusb10.py",
line 333, in _check
raise USBError(_str_error[retval.value])
USBError: Unknown error
======================================================================
ERROR: runTest (test_backend.BackendTest)
----------------------------------------------------------------------
Traceback (most recent call last):
File "/usr/home/mcuee/Desktop/build/pyusb/pyusb/trunk/tests/test_backend.py",
line 46, in runTest
self.test_get_device_descriptor()
File "/usr/home/mcuee/Desktop/build/pyusb/pyusb/trunk/tests/test_backend.py",
line 75, in test_get_device_descriptor
dsc = self.backend.get_device_descriptor(self.dev)
File "/usr/local/lib/python2.6/site-packages/usb/backend/libusb10.py",
line 390, in get_device_descriptor
_check(_lib.libusb_get_device_descriptor(dev.devid, byref(dev_desc)))
AttributeError: 'Device' object has no attribute 'devid'
----------------------------------------------------------------------
Ran 12 tests in 0.552s
FAILED (errors=2)
[mc...@myfreebsd ~/Desktop/build/pyusb/pyusb/trunk/tests]$ 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...
.......E...E
======================================================================
ERROR: runTest (test_integration.DeviceTest)
----------------------------------------------------------------------
Traceback (most recent call last):
File
"/usr/home/mcuee/Desktop/build/pyusb/pyusb/trunk/tests/test_integration.py",
line 61, in runTest
self.test_reset()
File
"/usr/home/mcuee/Desktop/build/pyusb/pyusb/trunk/tests/test_integration.py",
line 105, in test_reset
self.dev.reset()
File "/usr/local/lib/python2.6/site-packages/usb/core.py", line 550, in reset
self._ctx.backend.reset_device(self._ctx.handle)
File "/usr/local/lib/python2.6/site-packages/usb/backend/libusb10.py",
line 507, in reset_device
_check(_lib.libusb_reset_device(dev_handle))
File "/usr/local/lib/python2.6/site-packages/usb/backend/libusb10.py",
line 333, in _check
raise USBError(_str_error[retval.value])
USBError: Unknown error
======================================================================
ERROR: runTest (test_backend.BackendTest)
----------------------------------------------------------------------
Traceback (most recent call last):
File "/usr/home/mcuee/Desktop/build/pyusb/pyusb/trunk/tests/test_backend.py",
line 59, in runTest
self.test_reset_device()
File "/usr/home/mcuee/Desktop/build/pyusb/pyusb/trunk/tests/test_backend.py",
line 183, in test_reset_device
self.backend.reset_device(self.handle)
File "/usr/local/lib/python2.6/site-packages/usb/backend/libusb10.py",
line 507, in reset_device
_check(_lib.libusb_reset_device(dev_handle))
File "/usr/local/lib/python2.6/site-packages/usb/backend/libusb10.py",
line 333, in _check
raise USBError(_str_error[retval.value])
USBError: Unknown error
----------------------------------------------------------------------
Ran 12 tests in 0.660s
FAILED (errors=2)
--
Xiaofan http://mcuee.blogspot.com
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