On Sun, Dec 25, 2011 at 3:49 AM, Stephen Conley <conle...@me.com> wrote:
> Hi - new to PyUSB and attempting to read GPS info from Garmin USB GPS.  I am
> using the Windows 7 (64 bit) and have installed libusb0.  The Garmin driver
> also appears to be connected to the GPS.
>
> I get the error:
>
> [Errno None] libusb0-dll:err [claim_interface] could not claim interface 0,
> win error: The requested resource is in use.
>
> I have read on the byte forum that Garmin GPS units don't work with PyUSB on
> Windows because of some quirk in the way the drivers are installed.  Is that
> true and is there a work around (short of not using PyUSB)?
>

How did you install libusb-win32? What is the output of testlibusb-win.exe?

Are you using the filter driver? If that does not work, try to use the device
driver mode and it should work.


-- 
Xiaofan

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