a good usb encryption card design, client. Cypress with the company's chip.

usb 设计参考资料 可以借鉴 usb1.1-usb reference design can draw on USB1.1

关于高效率USB电源管理系统从汽车电源安全地给锂离子/锂聚合物电池充电-some about mh-batteries charge discharge~~

PIC单片机的USB嵌入式接口程序,用C语言编写-PIC MCU embedded USB interface program using C language

usb固件程序，描述了pdiusbd12固件的编写-usb firmware and firmware description of the preparation pdiusbd12

一个用keil编写的usb测速软件，通过启动新线程来接受处理数据-Keil prepared using a usb velocimetry software, through the launch of a new thread to accept data processing

USB接口应用编程-The programming of application of the USB interface

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

LPC17开发板的USB-HID例程代码-USB HID

作品简介:该作品与配备的多个从机构成一个计分体系,可以通过总机器读取从机器的分值.每个计分员在手上的计分从机器输入分数,则无需人手统计,就能在总机器的液晶屏上看到各位记分员给的分数. 支持多个从机同时通过USB线连接到总机.由于USB连接市场上能方便的购买,所以使用USB连接线构建计分体系. 作品作用:在各种文艺活动中的计分环节上,能方便的为计分员统计分数. -Works Introduction: the work and is equipped with a number from the body into a scoring system, the machine can read the total scores from the machine. Each scoring in the hands of the points from the machine enter the scores, you do not need manpower statistics can be in the overall machine s LCD screen to see all the scores to the scorekeeper. support multiple machines at the same time from the USB line to connect to the switchboard. USB connection as a result of the market can make it easier to buy, so use the USB cable to build a scoring system. work roles: in a variety of cultural activities in the scoring areas, can make it easier for Members of statistical scores points.

USB的LPM spec,详细描述了LPM状态机和ACK-LPM spec for usb