Hi
My first try at beginning a dialogue with an Arduino Uno board via pyusb.
I can find it but can't set_configuration()
Has anyone had success with this?
Last login: Sun Nov 6 08:49:19 on ttys000
geomacbk:~ georgewr$ python
Python 2.6.1 (r261:67515, Jun 24 2010, 21:47:49)
[GCC 4.2.1 (Apple Inc. build 5646)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import usb.core
>>> import usb.util
>>> #These vendor & product ids are for the arduino UNO. Location ID:
>>> 0x1d100000 / 2
... device = usb.core.find(idVendor=0x2341, idProduct=0x0001)
>>> device
<usb.core.Device object at 0x100637dd0>
>>> device.set_configuration()
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/Library/Python/2.6/site-packages/usb/core.py", line 530, in
set_configuration
self._ctx.managed_set_configuration(self, configuration)
File "/Library/Python/2.6/site-packages/usb/core.py", line 92, in
managed_set_configuration
self.backend.set_configuration(self.handle, cfg.bConfigurationValue)
File "/Library/Python/2.6/site-packages/usb/_debug.py", line 52, in do_trace
return f(*args, **named_args)
File "/Library/Python/2.6/site-packages/usb/backend/libusb10.py", line 455,
in set_configuration
_check(_lib.libusb_set_configuration(dev_handle, config_value))
File "/Library/Python/2.6/site-packages/usb/backend/libusb10.py", line 357,
in _check
raise USBError(_str_error[retval.value])
usb.core.USBError: No such device (it may have been disconnected)
>>>
George Wright
[email protected]
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