Using WinUSB with USB Device Simulator

Hi Everybody,

I am working on USB client app and would like to use WinUSB functions to read and write to USB channel. I also would like to use provided with WinDDK usbsamp driver and SoftUSBLoopback.dll to implement the simulated end of the USB device.
I have followed instructions (WinUSB (Winusb.sys) Installation) to update usbsamp “Intel 82930 USB Test Board” driver (usbsamp.sys) to WinUSB (winusb.sys) driver so I could use it in my client app. I have modified my inf file (provided below), and update completes successfully but then when I call WinUsb_Initialize – it always returns 0.

Regards,
Janusz

Code:

---

;
;
; Installs WinUsb
;

[Version]
Signature = "$Windows NT$"
Class    = USBDevice
ClassGUID = {88BAE032-5A81-49f0-BC3D-A4FF138216D6}
Provider  = %ManufacturerName%
CatalogFile = WinUSBInstallation.cat
DriverVer=04/16/2013,13.54.20.543

; ========== Manufacturer/Models sections ===========

[Manufacturer]
%ManufacturerName% = Microsoft,NTAMD64

[Standard.NTamd64]
%DeviceName% =USB_Install, USB\VID_045E&PID_930A  ; Intel 82930

; For XP and later
[Microsoft.NTAMD64]
%DeviceName%=USB_Install, USB\VID_045E&PID_930A  ; Intel 82930
; ========== Class definition ===========

[ClassInstall32]
AddReg = ClassInstall_AddReg

[ClassInstall_AddReg]
HKR,,,,%ClassName%
HKR,,NoInstallClass,,1
HKR,,IconPath,%REG_MULTI_SZ%,"%systemroot%\system32\setupapi.dll,-20"
HKR,,LowerLogoVersion,,5.2

; =================== Installation ===================

[USB_Install]
Include = winusb.inf
Needs  = WINUSB.NT

[USB_Install.Services]
Include =winusb.inf
Needs  = WINUSB.NT.Services

[USB_Install.HW]
AddReg=Dev_AddReg

[Dev_AddReg]
HKR,,DeviceInterfaceGUIDs,0x10000,"{00873fdf-61a8-11d1-aa5e-00c04fb1728b}"

; [DestinationDirs]
; If your INF needs to copy files, you must not use the DefaultDestDir directive here. 
; You must explicitly reference all file-list-section names in this section.

; =================== Strings ===================

[Strings]
ManufacturerName            = "Microsoft"
ClassName                              = "Sample Device"
DeviceName                                        ="Fx2 Learning Kit Device"
REG_MULTI_SZ                                = 0x00010000

---