该文档提供了对基于新华龙的BTF340开发评估板USB通信程序的分析，仅供参考。...

对USB的2.0标准和上位机下位机通讯标准，各部分的结构组成和实现情况进行整理。当时做项目涉及到这部分的知识，所以看了大量的资料，这部分的东西蛮多-For USB 2.0 standards and lower PC communication standards, the various parts of the structure of the composition and finishing realize the situation. At that time, to do projects related to this part of the knowledge, so read a lot of information, this part of the East and West蛮多

USB通讯若干问题探讨-USB communication on a number of issues

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 the pilot, 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

ISP1581是菲利普公司推出的USB2.0通讯芯片，能够实现比USB1.1更快的数据通讯。本程序演示的是利用端点1及厂商请求进行收发通讯的例子。-ISP1581 is a USB2.0 communication chip, it provides faster data transmission then USB1.1. This program display the sales point 1 and vendor request for starting communication.

usb海量存储的驱动程序-usb mass storage driver

凌阳SPCA5XX解码芯片USB驱动源代码，仅供参考，请不要用于商业用途。-Sunplus SPCA5xx decoder chip USB driver, reference only, not for commercial usage.

usb_host_ch375_c51编程-usb_host_ch375_c51

some examples of LCD dit display via USB

usb 的开发文档，非常有参考价值 详细讲述了CY7C68013的开发过程-usb development documents, a very valuable reference for a detailed account of the development process CY7C68013

USB_UART串口详细资料，初学者的好材料-Serial USB_UART details of a good material for beginners