[libhid-discuss] Device path

[Peter Stuge]

On Wed, May 21, 2008 at 12:07:24PM +0530, Ankita Prasad wrote:
> Every time I enumerate my device, the OS gives me a new handle.
> This is okay when I just have one hid device connected. But when I
> have more than one device then maintaining 1:1 relationship between
> my application and the hid devices is an issue.

The USB specification intends you to use device serial numbers for
this purpose.


> This can be done if I know the actual port to which my hid device
> is connected.

This will actually not help much, because once a device is
disconnected you can not know if it is the same one, or a different
device just like it, that is plugged into a different port.


> Can I figure out the specific port to which my device is connected
> using Device Path using libhid?

I don't think so.


//Peter