VB调用USB接口智能卡的应用例程，在希望…

some examples of LCD dit display via USB

应用程序调用USB驱动程序-Application programming transfered USB driver

usb-Blaster 93c46烧写工具-usb-Blaster 93c46 programmer tools

usb协议的正式规范，必备-usb agreement formalized Obligatory

关于usb的源码ScanUSB-on usb the source ScanUSB

USB数据采集及传输模块的设计-USB data acquisition and transmission module design

D12测试用户程序

本程序演示了如何利用编写高层应用程序与USB接口通信。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 procedure demonstrates how to use the preparation of high-level applications and USB interface. Yes there is the need to know how to identify the host USB devices, as well as the basic principle of USB.

ez_loader驱动程序源代码（vc工程文件）-ez_loader driver source code (vc project file)

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