I installed pyusb on Windows XP SP3 32bit then installed libusb1.0 and then
libusb-win32.
I can detect usb devices and read their descriptions using
dev = usb.core.find(.)
dev.idVendor
ect.
I can even get down to the endpoints of the USB devices:
Ep = dev[0][(0,0)][0]
But when I try Ep.write('test') or Ep.read(1) I get this:
Traceback (most recent call last):
File "<console>", line 1, in <module>
File "C:\Python26\lib\site-packages\usb\core.py", line 276, in write
return self.device.write(self.bEndpointAddress, data, self.interface,
timeout)
File "C:\Python26\lib\site-packages\usb\core.py", line 593, in write
intf = self._ctx.get_interface(self, interface)
File "C:\Python26\lib\site-packages\usb\core.py", line 153, in
get_interface
cfg = self.get_active_configuration(device)
File "C:\Python26\lib\site-packages\usb\core.py", line 165, in
get_active_configuration
bConfigurationValue=self.backend.get_configuration(self.handle)
File "C:\Python26\lib\site-packages\usb\_debug.py", line 52, in do_trace
return f(*args, **named_args)
File "C:\Python26\lib\site-packages\usb\backend\libusb10.py", line 460, in
get_configuration
_check(_lib.libusb_get_configuration(dev_handle, byref(config)))
WindowsError: exception: access violation reading 0x00000010
Any ideas?
Thanks so much. I'm just starting to look at this but it would be
incredibly useful if I can get it to work.
Aaron
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