I tried to manually interact with device using python command prompt,
and it worked fine:
C:\Projetos\pyusb\trunk>python
ActivePython 2.6.1.1 (ActiveState Software Inc.) based on
Python 2.6.1 (r261:67515, Dec 5 2008, 13:58:38) [MSC v.1500 32 bit (Intel)] on
win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import usb.core
>>> d = usb.core.find(idVendor=0xfffe)
>>> d.write(1, "teste")
5
>>> d.read(5)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: read() takes at least 3 arguments (2 given)
>>> d.read(0x81, 5)
array('B', [116, 101, 115, 116, 101])
>>> exit()
Although not showed above, it is using libusb 1.0, as libusb 0.1 would
fail to enumerate the device (it is not using libusb0.sys driver).
After that, I disconnected and reconnected the device, and the hanging
problem came back. I will investigate a bit further, and report any
news...
Wander
2010/4/7 Xiaofan Chen <[email protected]>:
> On Thu, Apr 8, 2010 at 7:55 AM, Wander Lairson <[email protected]>
> wrote:
>> I am using WinUSB, but suddenly the problem stopped to occur, now I am
>> having that "access denied" problem...
>>
>
> I see. Now we have the same problem with native Python installation
> and libusb 1.0 Windows. I will say it is a strange problem but I am not
> a Python expert.
>
>
> --
> Xiaofan http://mcuee.blogspot.com
>
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