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

ERP企业资源管理软件开发知识教育文章， 对于欲要了解ERP知识的同人有所帮助。 -ERP enterprise resource management software development knowledge education article, for wishing to understand ERP knowledge help colleagues.

seed_dec 2812与上位机通信的源程序，-seed_dec 2812 with the host computer communications source,

usb固件编程―函数应用-usb firmware programming-function application

基本USB驱动程序-basic USB Driver

WWWcam 是一个从基于视频设备的Webcam中抓图，存档，发布图片的工具。通过 CPiA webcam驱动，支持USB或其他端口。除了一般的通过浏览器连接 wwwcam 的功能外，还支持很多特有功能：自调整标题，自动修正亮度，通过和最新图片计较自动判断是否存储图片等-WWWcam is a video-based equipment from the Labs WebCam which Previously, archiving, publishing pictures of the tools. Through CPiA webcam drive, USB or other ports. Apart from the general browser connecting wwwcam functions, also supports many unique features : Self-adjusting title, automatically corrects brightness, and the latest pictures judgment regardless of whether automatic storage pictures

vb下usb通讯的例子-The example of communication of usb in vb

usb1.1源代码-usb 1.1 source code

isp1160_isa_evel_codeUSB主机软件，可驱动打印机，音频设备，鼠标? size=80>

用于查询PC机上的USB端口是否有设备挂接上，并显示挂接的设备PID,UID。-For inquiries PC, whether there is the USB port mounted on the equipment and show equipment articulated PID, UID.