基于MCF52223的多功能USB数据采集系统的设计

以飞思卡尔推出的内部集成USB2.0模块的MCF52223微控制器为基础，借鉴USB OTG双重角色的思想，提出了自主数据采集和非自主数据采集两种编程模式概念，实现可配置运行的嵌入式USB主机功能，完成对U盘文件的读写与查询，使U盘成为系统的外挂式海量存储设备以及查询数据库。系统稳定地应用于基于二代身份证会议签到系统的实践表明，这种设计方式对数据查询、存储、读取带来了较大方便，并能方便地切换到非自主数据采集模式，可为同类应用借鉴。

Design of USB multi-function data acquisition system based on MCF52223

With reference to the idea of USB OTG dual role,and based on the microcontroller MCF52223 which is integrated with USB2.0 module produced by Freescale Corporation,this paper put forward the concept of two-programming-models: Self Data Acquisition and Non-self Data Acquisition,realized the function of configurable embedded USB host,and completed the read-write and inquiry of the U-disk,and made U-disk become the external mass storage devices and query database.This acquisition system stable usage in the meet...