- Port number on the parent usb hub
- Posted by Leen Toelen on February 20th, 2008
Hi,
I am writing aprogram that listens for certain classes of USB devices.
I get the device instance id and device handle, and can traverse the
usb tree back to the root hub. But I need to know on which ports of
the hubs above my device is located. Is there a way for a usb device
to know the port number of its parent on which it is connected?
Regards,
Leen Toelen
- Posted by Doron Holan [MSFT] on February 20th, 2008
no, why does it matter?
d
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"Leen Toelen" <toelen@gmail.com> wrote in message
news:80614a4d-e167-4936-9034-5084807bb641@h25g2000hsf.googlegroups.com...
- Posted by Uwe Sieber on February 25th, 2008
Leen Toelen wrote:
Check out the USBView sample which comes with the DDK/WDK
and the 'Display USB' sample from Intel:
http://www.intel.com/intelpress/usb/examples/dusbvc.htm
The magic link between the items in the USB API enumeration
and the SetupDi enumeration is the drive key name,
something like
{36FC9E60-C465-11CF-8056-444553540000}\0017
Thru USB API you get it by DeviceIoControl and
IOCTL_USB_GET_NODE_CONNECTION_DRIVERKEY_NAME as shown in the
USBView sample.
Thru SetupDi you get it by SetupDiGetDeviceRegistryProperty and
SPDRP_DRIVER.
Greetings from Germany
Uwe
