Re: [Libusb-win32-devel] Identify the physical USB ports used by a driver handle

[Xiaofan C. <xia...@gm...>]

On Fri, Feb 19, 2010 at 6:10 PM, Patrik Thalin
<pat...@st...> wrote:
> Hi all,
>
> I am looking for a solution to identify the physical USB ports used by a
> device. I have looked at devcon in WDK to find the DeviceID eg.
> USB\VID_xxxx&PID_yyyy\6&6B42B9C&0&4. This seem to be a unique for the
> port used. I have successfully duplicated this to my application. By
> calling SetupDiGetDeviceRegistryProperty and SetupDiGetDeviceInstanceId.
> But I can't find a way to associate this to the driver handle. Can this
> be done?
>
>
> Any other suggestion on how identify the port is also welcome! Note that
> I can not use a serial number in the device it has to be unique for the
> USB port on the computer. Also note that I have several indentical units
> connected.
>

I do not know the answer. You may have better luck trying out
some other lists. The best one may be this newsgroup.
microsoft.public.development.device.drivers
http://groups.google.com/group/microsoft.public.development.device.drivers/topics

But it is said to be non-trivial for any OS.
http://old.nabble.com/Re%3A-how-to-get-device-info-from-mount-point-p16593540.html

Some say it is not possible under Windows.
http://www.winvistatips.com/uniquely-identify-usb-hid-device-t809662.html

Might be possible under Linux or Mac OS X.
http://old.nabble.com/How-to-get-the-Location-ID-and-Current-Available-information-on-linux--td25588308.html

-- 
Xiaofan http://mcuee.blogspot.com