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USB设备
USB设备端固件程序,枚举部分是全部程序的基础和重心,只有主机对设备枚举成功后,主机才能和设备进行正常的通信
USB的枚举过程分为4个状态.
1.接入态
v主机检测到USB设备插上,击活端口,并发送复位命令(保持10ms)
2.默认态
v主机使用默认地址读取设备描述符 (GET_DESCRIPTOR)
v主机分配给设备一个总在线的唯一地址 (SET_ADDRESS)
3.地址态
v主机从新的地址获取设备描述符(GET_DESCRIPTOR)
v主机获取所有设备的配置描述符(GET_DESCRIPTOR)
4.配置态
v主机设置描述符(设备,配置) (SET_CONFIGURATION)
v主机读取配置状态(可选) (GET_CONFIGURATION)
v主机读取接口状态(可选) (GET_INTERFACE)
-USB device-side firmware, enumerate all part of the foundation and focus of the procedure, only the host of equipment after the successful enumeration, the host and equipment in order to engage in normal communication USB enumeration process is divided into four status. 1. Access state v host detected USB devices plug in, hit live ports, and send the reset command (to maintain 10ms) 2. default state v Use the default address of the host to read device descriptor (GET_DESCRIPTOR) v host assigned to the equipment of a total online only Address (SET_ADDRESS) 3. A
- 2022-01-21 17:52:38下载
- 积分：1
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USB 项目技术报告，是2002 年12 月 北航 frank所做的关于USB协议和开发过程的报告，非常详细。...
USB 项目技术报告，是2002 年12 月 北航 frank所做的关于USB协议和开发过程的报告，非常详细。
-USB project technical report is December 2002 BUAA frank done on the USB protocol and the report of the development process, very detailed.
- 2023-03-19 23:25:03下载
- 积分：1
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USB hardware detection software
USB硬件检测软件-USB hardware detection software
- 2023-08-04 12:05:05下载
- 积分：1
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usb通用驱动
驱动通用的usb设备
vc环境下
usb通用驱动
驱动通用的usb设备
vc环境下-generic usb driver usb generic device driver vc environment
- 2022-03-26 19:27:54下载
- 积分：1
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本程序演示了如何利用编写高层应用程序与USB接口通信。读者有必要了解主机是如何识别USB设备以及USB工作的基本原理。...
本程序演示了如何利用编写高层应用程序与USB接口通信。读者有必要了解主机是如何识别USB设备以及USB工作的基本原理。-this program demonstrated how to use the preparation of high-level applications and USB communication. Readers need to understand is how to identify host USB and USB devices to the basic tenets.
- 2022-11-19 06:50:03下载
- 积分：1
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USB firmware source code, have been debug through. Recommended to download the u...
USB固件程序源码，已调试通过。建议下载用户根据自己的功能进行适当修改。-USB firmware source code, have been debug through. Recommended to download the user according to their own functions with appropriate modifications.
- 2022-08-23 03:52:10下载
- 积分：1
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USB设备工具集V1.0版，太好用了欢迎大家使用
USB设备工具集V1.0版，太好用了欢迎大家使用-USB Device Tool Set V1.0 version of welcome to use so many different uses
- 2022-11-14 01:10:04下载
- 积分：1
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机器人处理中使用USB摄像机的例子程序.
机器人处理中使用USB摄像机的例子程序.-handling robot using USB camera examples procedures.
- 2023-07-23 12:30:04下载
- 积分：1
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支持PC机的各种端口的读写,包括,并口,串口,USB,
支持PC机的各种端口的读写,包括,并口,串口,USB,-Support a variety of PC-to read and write ports, including parallel, serial, USB, etc.
- 2022-04-08 22:43:15下载
- 积分：1
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THIS SPECIFICATION IS PROVIDED TO YOU “AS IS” WITH NO WARRANTIES WHATSOEVER, INC...
- 2022-07-18 13:46:08下载
- 积分：1
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