2010/4/17 Xiaofan Chen <xiaof...@gmail.com>:
> On Sun, Apr 18, 2010 at 3:31 AM, Wander Lairson
> <wander.lair...@gmail.com> wrote:
>> 2010/4/17 Xiaofan Chen <xiaof...@gmail.com>:
>>> On Fri, Apr 16, 2010 at 11:14 PM, Wander Lairson
>>> <wander.lair...@gmail.com> wrote:
>>>
>>>> Known issues
>>>> -----------------
>>>>
>>>> - 'reset' method fails under FreeUSB (libusb 1.0 backend).
>>>
>>> 'reset' method fails under FreeUSB 8.0 (libusb 1.0 backend). I am
>>> not so sure about the older system.
>>>
>>> One more: libusb 0.1 backend does not seem to work under FreeBSD 8.0.
>> Is there any error messages when running the tests? (with
>> PYUSB_DEBUG_LEVEL=debug).
>
> The issue is that with libusb 0.1 backend, it can not find the device.
>
> [mc...@myfreebsd ~/Desktop/build/pyusb/pyusb-1.0.0-a0/tests]$ export
> PYUSB_DEBUG_LEVEL=debug
> [mc...@myfreebsd ~/Desktop/build/pyusb/pyusb-1.0.0-a0/tests]$ sudo
> python testall.py
> .F.......E...
> ======================================================================
> ERROR: runTest (test_integration.DeviceTest)
> ----------------------------------------------------------------------
> Traceback (most recent call last):
> File
> "/usr/home/mcuee/Desktop/build/pyusb/pyusb-1.0.0-a0/tests/test_integration.py",
> line 57, in runTest
> self.test_set_configuration()
> File
> "/usr/home/mcuee/Desktop/build/pyusb/pyusb-1.0.0-a0/tests/test_integration.py",
> line 94, in test_set_configuration
> self.dev.set_configuration(cfg)
> File "/usr/home/mcuee/Desktop/build/pyusb/pyusb-1.0.0-a0/usb/core.py",
> line 514, in set_configuration
> self._ctx.managed_set_configuration(self, configuration)
> File "/usr/home/mcuee/Desktop/build/pyusb/pyusb-1.0.0-a0/usb/core.py",
> line 85, in managed_set_configuration
> self.backend.set_configuration(self.handle, cfg.bConfigurationValue)
> File "/usr/home/mcuee/Desktop/build/pyusb/pyusb-1.0.0-a0/usb/_debug.py",
> line 53, in do_trace
> return f(*args, **named_args)
> File
> "/usr/home/mcuee/Desktop/build/pyusb/pyusb-1.0.0-a0/usb/backend/libusb10.py",
> line 451, in set_configuration
> _check(_lib.libusb_set_configuration(dev_handle, config_value))
> File
> "/usr/home/mcuee/Desktop/build/pyusb/pyusb-1.0.0-a0/usb/backend/libusb10.py",
> line 353, in _check
> raise USBError(_str_error[retval.value])
> USBError: Invalid parameter
Wow! This is new one!
>
> ======================================================================
> FAIL: runTest (test_backend.BackendTest)
> ----------------------------------------------------------------------
> Traceback (most recent call last):
> File
> "/usr/home/mcuee/Desktop/build/pyusb/pyusb-1.0.0-a0/tests/test_backend.py",
> line 44, in runTest
> self.test_enumerate_devices()
> File
> "/usr/home/mcuee/Desktop/build/pyusb/pyusb-1.0.0-a0/tests/test_backend.py",
> line 67, in test_enumerate_devices
> self.fail('PyUSB test device not found')
> AssertionError: PyUSB test device not found
>
> ----------------------------------------------------------------------
> Ran 13 tests in 3.847s
>
> FAILED (failures=1, errors=1)
>
>
> [mc...@myfreebsd ~]$ 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)
> 2010-04-18 09:19:26,231 DEBUG:usb.backend.libusb01:_LibUSB.enumerate_devices()
>>>> assert dev is not None
> Traceback (most recent call last):
> File "<stdin>", line 1, in <module>
> AssertionError
>>>>
But you said some time ago that with 0.4 version it works, right? Kind
of strange...
>
>>>> - 'reset' method hangs under Windows (libusb 1.0 backend).
>>>> - Sometimes occurs `read` timeout on Windows (libusb 1.0 backend).
>>>> - Test cases fail to run under cygwin.
>>>
>>> You can probably remove "reset" from the test cases as it is
>>> problematic anyway. Normally it is only used as a last resort
>>> (often only under Linux).
>>
>> Actually I do it to have known device state when changing the backend
>> in the tests.
>>
>
> I see. That is a problem. Normally you have to wait quite some time,
> then re-enumerate the device (under Windows and FreeBSD at least)
> as the file handle becomes invalid.
>
>
> --
> Xiaofan http://mcuee.blogspot.com
>
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