Thanks, it works. I was confused
On Tue, Feb 19, 2013 at 6:37 PM, Wander Lairson Costa <
wander.lair...@gmail.com> wrote:
> 2013/2/19 Marcos Anzorena <anzoren...@gmail.com>:
> > Hi:
> >
> > I'm working on a project comunicating a Tektronix scope MSO2024 using
> PyUSB,
> > libusb 1.0 and Fedora 16. So far i can only find the scope, but when i
> try
> > to "set_configuration()" it sends me error. This is the code that i'm
> using:
> >
> >
> > tek=usb.core.find(idVendor=0x0699,idProduct=0x03A4)
> > if tek is None:
> > raise ValueError('No se encontro el osciloscopio')
> >
> > if tek.is_kernel_driver_active(0):
> > tek.detach_kernel_driver(0)
> > tek.set_configuration(0)
> > usb.util.claim_interface(tek,0)
> >
> > The result is:
> >
> > Traceback (most recent call last):
> > File "osctek.py", line 22, in <module>
> > usb.util.claim_interface(tek,0)
> > File "/usr/lib/python2.7/site-packages/usb/util.py", line 191, in
> > claim_interface
> > device._ctx.managed_claim_interface(device, interface)
> > File "/usr/lib/python2.7/site-packages/usb/core.py", line 112, in
> > managed_claim_interface
> > self.backend.claim_interface(self.handle, i)
> > File "/usr/lib/python2.7/site-packages/usb/_debug.py", line 52, in
> > do_trace
> > return f(*args, **named_args)
> > File "/usr/lib/python2.7/site-packages/usb/backend/libusb10.py", line
> 471,
> > in claim_interface
> > _check(_lib.libusb_claim_interface(dev_handle, intf))
> > File "/usr/lib/python2.7/site-packages/usb/backend/libusb10.py", line
> 357,
> > in _check
> > raise USBError(_str_error[retval.value])
> > usb.core.USBError: Entity not found
> >
> > Any idea where is the problem??
> >
>
> Configuration "0" is a "non-configured" state. Generally devices comes
> with just one configuration, and if it is the case, calling
> set_configuration with no parameters will pick up the right value
> automatically.
>
> --
> Best Regards,
> Wander Lairson Costa
>
>
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--
*Marcos Anzorena*
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