---------------------------------------------------------------------------
USBError                                  Traceback (most recent call last)

/home/campbell/Libusb_test.py in <module>()
----> 1 
      2 
      3 
      4 
      5 

/usr/local/lib/python2.7/dist-packages/usb/core.pyc in read(self, size, timeout)
    271         For details, see the Device.read() method.
    272         """
--> 273         return self.device.read(self.bEndpointAddress, size, self.interface, timeout)
    274 
    275 class Interface(object):

/usr/local/lib/python2.7/dist-packages/usb/core.pyc in read(self, endpoint, size, interface, timeout)
    622                 intf.bInterfaceNumber,
    623                 size,
--> 624                 self.__get_timeout(timeout)
    625             )
    626 

/usr/local/lib/python2.7/dist-packages/usb/_debug.pyc in do_trace(*args, **named_args)
     51                 fn = type(args[0]).__name__ + '.' + f.__name__
     52                 _trace_function_call(logger, fn, *args[1:], **named_args)
---> 53             return f(*args, **named_args)
     54         _interop._update_wrapper(do_trace, f)
     55         return do_trace

/usr/local/lib/python2.7/dist-packages/usb/backend/libusb10.pyc in bulk_read(self, dev_handle, ep, intf, size, timeout)
    481                            intf,
    482                            size,
--> 483                            timeout)
    484 
    485     @methodtrace(_logger)

/usr/local/lib/python2.7/dist-packages/usb/backend/libusb10.pyc in __read(self, fn, dev_handle, ep, intf, size, timeout)
    579                   length,
    580                   byref(transferred),
--> 581                   timeout))
    582         return buffer[:transferred.value]
    583 

/usr/local/lib/python2.7/dist-packages/usb/backend/libusb10.pyc in _check(retval)
    351         if retval.value < 0:
    352            from usb.core import USBError
--> 353            raise USBError(_str_error[retval.value])
    354     return retval
    355 

USBError: Overflow