USB file structure

最新推荐文章于 2023-03-29 10:54:07 发布

ymzhou117

最新推荐文章于 2023-03-29 10:54:07 发布

阅读量616

点赞数

CC 4.0 BY-SA版权

分类专栏：驱动开发 USB驱动文章标签： structure file interface module function windows

本文链接：https://blog.youkuaiyun.com/ymzhou117/article/details/4384994

驱动开发同时被 2 个专栏收录

32 篇文章

订阅专栏

USB驱动

4 篇文章

订阅专栏

本文档详细介绍了Windows CE操作系统中USB驱动的USBD模块代码。USBD模块负责加载客户端驱动并为USB主机控制器提供接口。内容包括USBD与USB客户端驱动、HCD驱动之间的交互流程。

// 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) |
+--------------------+               +------------------------+
        /|/                                        /|/
         |                                          |
         +------------------------------------------+