Re: [Libusb-win32-devel] add device port number, usb_device

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

On Tue, Dec 11, 2012 at 7:01 AM, Alex Sheh <as...@ja...> wrote:
> - The current code, iterates through all possible lisbub0 symbolic index
> paths (i.e. “\\.\libusb0-0001”  to “\\.\libusb0-0256”), and attempts to open
> the libusb0 symbolic index path, by calling CreateFile().  If I could
> translate a libusb0 symbolic index path to an interface’s DevicePath (i.e.
> SP_DEVICE_INTERFACE_DETAIL.DevicePath, ex.
> \\?\usb#vid_[VID]&pid_[PID]#[serialNumber]#{[GUID]}), then I could use the
> DevicePath to get its SPDRP_ADDRESS property (which is the port number).
>

It seems to me libusbK's klist has this capacibilty to list both
symbolic link name the device path (the names are kind of
reversed in klist, probably it should be changed). So you
might get some help from libusbK codes as well.
http://code.google.com/p/usb-travis/source/checkout

C:\libusbK-dev-kit>klist

Loading USB ID's maintained by Stephen J. Gowdy <lin...@gm...>..

 1. STMicroelectronics STLink dongle (SGS Thomson Microelectronics) [Connected]
    Service              : libusb0
    ClassGUID            : {EB781AAF-9C70-4523-A5DF-642A87ECA567}
    DeviceID             : USB\VID_0483&PID_3748\8&23117AA8&0&1
    DeviceInterfaceGUID  : {47C9C148-9738-1A9B-2CB6-86C13FA48892}
    SymbolicLink         : \\?\usb#vid_0483&pid_3748#8&23117aa8&0&1#{47c9c148-97
38-1a9b-2cb6-86c13fa48892}
    DevicePath           : \\.\libusb0-0001
    SerialNumber         : 8&23117AA8&0&1
    BusNumber            : 0
    DeviceAddress        : 1

Select device (1-1) :1

Loading driver api..
Getting descriptors..

-Device:
  bLength             :18
  bDescriptorType     :0x01
  bcdUSB              :0x0200
  bDeviceClass        :0x00 (Defined at Interface level)
  bDeviceSubClass     :0x00
  bDeviceProtocol     :0x00
  bMaxPacketSize0     :64
  idVendor            :0x0483 (SGS Thomson Microelectronics)
  idProduct           :0x3748
  bcdDevice           :0x0100
  iManufacturer       :1 (STMicroelectronics)
  iProduct            :2 (STM32 STLink)
  iSerialNumber       :3 (V m♠IqTI‼ç)
  bNumConfigurations  :1
!End Device
-Configuration:
  bLength             :9
  bDescriptorType     :0x02
  wTotalLength        :39
  bNumInterfaces      :1
  bConfigurationValue :0x01
  iConfiguration      :0
  bmAttributes        :0x80
  MaxPower            :50 (100ma)
 -Interface:
    bLength             :9
    bDescriptorType     :0x04
    bInterfaceNumber    :0x00
    bAlternateSetting   :0x00
    bNumEndpoints       :3
    bInterfaceClass     :0xFF (Vendor Specific Class)
    bInterfaceSubClass  :0xFF (Vendor Specific Subclass)
    bInterfaceProtocol  :0xFF (Vendor Specific Protocol)
    iInterface          :4 (ST Link)
   -Endpoint:
      bLength             :7
      bDescriptorType     :0x05
      bEndpointAddress    :0x81
      bmAttributes        :0x02 (Bulk)
      wMaxPacketSize      :64
      bInterval           :0x00
   !End Endpoint
   -Endpoint:
      bLength             :7
      bDescriptorType     :0x05
      bEndpointAddress    :0x02
      bmAttributes        :0x02 (Bulk)
      wMaxPacketSize      :64
      bInterval           :0x00
   !End Endpoint
   -Endpoint:
      bLength             :7
      bDescriptorType     :0x05
      bEndpointAddress    :0x83
      bmAttributes        :0x02 (Bulk)
      wMaxPacketSize      :64
      bInterval           :0x00
   !End Endpoint
 !End Interface
!End Configuration


-- 
Xiaofan