Python 2.7.1 (r271:86832, Nov 27 2010, 18:30:46) [MSC v.1500 32 bit (Intel)]
on win32
Type "copyright", "credits" or "license()" for more information.
>>> import usb.core
>>> import usb.util
>>> dev = usb.core.find(idVendor = 0x04D8)
>>> dev.bDeviceClass
0
>>> dev.write(1, 'test')
Traceback (most recent call last):
File "<pyshell#4>", line 1, in <module>
dev.write(1, 'test')
File "E:\Python27\lib\site-packages\usb\core.py", line 593, in write
intf = self._ctx.get_interface(self, interface)
File "E:\Python27\lib\site-packages\usb\core.py", line 148, in
get_interface
cfg = self.get_active_configuration(device)
File "E:\Python27\lib\site-packages\usb\core.py", line 165, in
get_active_configuration
bConfigurationValue=self.backend.get_configuration(self.handle)
File "E:\Python27\lib\site-packages\usb\_debug.py", line 52, in do_trace
return f(*args, **named_args)
File "E:\Python27\lib\site-packages\usb\backend\libusb01.py", line 438, in
get_configuration
100
File "E:\Python27\lib\site-packages\usb\_debug.py", line 52, in do_trace
return f(*args, **named_args)
File "E:\Python27\lib\site-packages\usb\backend\libusb01.py", line 518, in
ctrl_transfer
timeout
WindowsError: exception: access violation reading 0x00000018
>>>
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