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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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枚举删除USB设备,获取USB移动盘的盘符
枚举删除USB设备,获取USB移动盘的盘符-enumeration delete USB devices, access to the USB disk drive
- 2022-06-28 19:54:34下载
- 积分:1
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ez_usb通信DLL源码,对柏驱动公众版的使用…
EZ_USB 通信DLL源码,使用EZUSB公版驱动。尹邦坤设计,希望对需要的同仁又帮助。-EZ_USB communications DLL source, the use of the public version of Cypress Drive. Bang-Kun design with the hope of my colleagues also need help.
- 2022-02-03 21:07:17下载
- 积分:1
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turb pascal7.0 写的usb存取程序
turb pascal7.0 写的usb存取程序-turb pascal7.0 write usb access procedures
- 2022-01-25 19:45:09下载
- 积分:1
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ARM7+D12开发U盘的资料(中文),想用来玩u盘的同志们下载看看吧...
ARM7+D12开发U盘的资料(中文),想用来玩u盘的同志们下载看看吧-ARM7 development of the U-D12 information (Chinese), would like to play for the u-download comrades see it
- 2022-03-20 07:56:36下载
- 积分:1
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这个目录中的压缩文件包含一系列的讲座和实例…
The zip file in this directory contains a series of lectures and examples intended as an introduction to USB.
- 2022-08-17 22:01:48下载
- 积分:1
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usb通信的上位机软件,适用于lpc的arm,可以实现收发三个端点...
usb通信的上位机软件,适用于lpc的arm,可以实现收发三个端点-usb PC communications software, applied to LPC
- 2022-01-25 23:36:30下载
- 积分:1
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应用程序调用USB驱动程序
应用程序调用USB驱动程序-Application programming transfered USB driver
- 2022-05-18 18:51:32下载
- 积分:1
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这是一个测试MP3的程序,通过USB口来测试此款MP3是否出现了功能故障,或者此MP3是否是出厂状态,实现了从PC上层直接控制下层硬件的范例....
这是一个测试MP3的程序,通过USB口来测试此款MP3是否出现了功能故障,或者此MP3是否是出厂状态,实现了从PC上层直接控制下层硬件的范例.-This is a test MP3 procedure for the adoption of USB MP3 Photo Player to test whether there is a functional fault, or whether this is manufactured MP3 state, from the PC to achieve the direct control of the upper class hardware model.
- 2022-03-19 15:57:07下载
- 积分:1
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USB Host 资料
USB Host 资料-USB Host
- 2023-04-10 14:40:30下载
- 积分:1