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标题: USB file structure [打印本页]

作者: leixiaofeng 时间: 2015-3-22 20:31
标题: USB file structure

// Module Name:
//    CDevice.cpp
// Abstract:
//    This file manages the USB devices
//
//                CDevice (ADT)
//             /             /
//          CFunction       CHub (ADT)
//                         /       /
//                      CRootHub CExternalHub

Module Name:

usbddrv.cpp

Abstract:

This file contains code for the USBD module of the Universal Serial
Bus driver for Windows CE. The USBD driver is responsible for loading
client drivers, and providing an interface to the USB host controller
to client drivers.

  +--------------+
  | USB Client |
  | Driver    |
  +--------------+
      /|/
      |    USBDI Interface
      /|/
  +--------------+
  |  USBD       |
  |  Driver    |
  +--------------+
      /|/
      |    HCD Interface
      /|/
  +--------------+
  |  HCD (OHCD or|
  |  UHCD) driver|
  +--------------+
      /|/
      |    HC Interface
      /|/
  +--------------------+             +------------------------+
  | Host controller HW |             | USB Device (function)  |
  +--------------------+             +------------------------+
      /|/                                     /|/
      |                                        |
      +------------------------------------------+

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