最終更新:2014-11-12 (水) 15:54:50 (3446d)

WinUSB

Windows USB

Windows XP SP2以前はUSBデバイスドライバはカーネルモードである必要があったためWDFと共に開発された汎用USBドライバ

概要

Windows USB (WinUSB) is a generic driver for USB devices that was developed concurrently with the Windows Driver Foundation (WDF) for Windows XP with SP2. The WinUSB architecture consists of a kernel-mode driver (Winusb.sys) and a user-mode dynamic link library (winusb.dll) that exposes WinUSB functions. By using these functions, you can manage USB devices with user-mode software.

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ドキュメント

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仕組み

カーネルモードで動作するドライバ:winusb.sys
ドライバとのインターフェイス:winusb.dll

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対応プラットフォーム

OS	対応
Windows 7	x86,x64,Itanium
Windows Server 2008	x86,x64
Windows Vista	x86,x64
Windows Server 2003	非対応
Windows XP	SP2以降のx86,x64
Windows 2000	非対応

アイソクロナス転送は非対応
- Windows 8.1で対応
  - http://msdn.microsoft.com/en-us/library/windows/hardware/dn376866(v=vs.85).aspx

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関数 (winusb.h)

WinUsb_GetDescriptor?
WinUsb_Initialize
WinUsb_QueryInterfaceSettings?
WinUsb_QueryPipe?
WinUsb_Free?

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libusb-win32との比較

libusb-win32 device driver (libusb0.sys) has quite some advantages compared to WinUSB.

1) Open source, the device driver is GPLed, with libusb-0.1 compatible library (LGPL).
2) Support multiple configuration USB device.
3) Support isochronous transfer whereas WinUSB does not.
4) Support Windows 2000, Windows 2003? 32bit/64bit and Windows XP 64bit, Microsoft does not support WinUSB on these platforms. On the other hand, since version 1.2.0.0, libusb0.sys is digitally signed so it is similar to WinUSB -- both work under 64bit Windows which requires kernel mode driver to be signed, like 64bit Windows Vista or Windows 7.
5) WinUSB does not support multiple concurrent applications.