有关学习usb的

带并行总线的USB接口器件-parallel bus with USB Interface

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

USB通信协议和U盘固件程序实现与调试-U disk USB communication protocols and procedures for implementation and debugging firmware

这个程序用180行C代码就能够读取FAT16文件系统U盘的根目录,可以看到根目录下的文件 名,并可显示 首文件内容,不过,该程序很不严谨,也没有任何错误处理,对U盘兼容性较差,只是用于简单试 验,作为参考. 这个程序可以支持WINDOWS按FAT16格式化的U盘,因为程序精简,所以只兼容超过50%以上的U 盘品牌,如果换 成CH375A芯片则兼容性可提高到85%,当然,如果使用WCH公司的子程序库或者正式版本的C源 程序兼容性更好-this procedure with 180 OK C code can read FAT16 file system drives the root directory, we can see the root directory under the file name, would show the first document, but the very stringent procedures, and there is no error handling, the U-poor compatibility, but for the simple test a post-mortem as a reference. this procedure can be supported by Windows FAT16 formatted U disk, because the procedure is streamlined and therefore only compatible with more than 50% of the U-brand, if chips were replaced CH375A compatibility can be increased to 85%, if the company"s use of WCH Subroutine Library or an official version of the C source better compatibility

usb2.0 驱动; 包括SYS目录--Usb2.0 driver, including SYS direcotry.

CY7C63743 usb源码-CY7C63743 USB FOSS

HomePNA的Usb网卡驱动，（Ndis_WDM(USB)）仅提供框架，设备配置部分删除，有注释。-HomePNA the Usb network adapter driver, (Ndis_WDM (USB)) only provide the framework, part of the deletion of equipment, there are notes.

基于fpga的usb实现，包含简介，程序，原理图，与大家分享！-USB implement based on FPGA, including program and schematic circuit diagram. Share with all you.

用USB控制硬硬盘读写的汇编代码。-control with USB hard drives read and write assembly code.

USB Host 开发中支持数码相机的源码。即Picture To Picture协议的完整实现-Source code for USB Host development supporting digital camera. Full implement of Picture To Picture Protocol.