嵌入式数据终端平台的研制

【作者】 何娜琴；

【导师】 陆宝春；

【作者基本信息】 南京理工大学 ， 机械电子工程， 2007， 硕士

【摘要】 随着嵌入式系统硬件设备的广泛运用、价格不断降低，及嵌入式系统应用范围的不断扩大，嵌入式文件系统的重要性显得更加突出。嵌入式系统通常是无磁盘系统，为了让嵌入式系统能够永久性保存资料，使用闪存是一种普遍的策略。那么如何在嵌入式系统环境中建立闪存文件系统就成为了本文研究和解决的重要问题。嵌入式数据终端平台是针对江苏光一科技公司现有自动抄表产品的技术不足，而设计开发的智能抄表新平台。该平台以LPC2292处理器为核心，移植了μC／OS-Ⅱ操作系统，外加各存储模块、通信模块等。论文基于对该平台实际应用的需求分析，通过对文件系统的分析研究，并结合嵌入式闪存文件系统的设计特点，构建了一兼容FAT文件系统的嵌入式NAND Flash文件系统，与此同时，通过USB总线，实现了PC机和嵌入式数据终端平台间的通信，完成了两者间文件的上下传输。系统的调试与测试表明：系统达到了预期的功能要求及一定的性能要求，实现了课题研究的预期目标。更多还原

【Abstract】 With the increasing of availability of embedded system hardware and the lowering ofits price, and the expanding of application field, the importance of embedded file system isbecoming more and more significant.Embedded systems are usually diskless systems. In order to keep permanent data inthe systems, it is a widely adapted strategy to use flash memory. Therefore how to build aflash file system in embedded system is the focus of this thesis.The Embedded Development Platform of Data Terminal is a new intelligent meterreading platform which is designed for Jiangsu Elefirst Technology Company, based on thepurpose to solve some disadvantages of the existing meter reading system. The platform isbased on LPC2292 microprocessor andμC/OS-Ⅱoperating system. It also includes somemodules such as memory modules, communication modules and so on. On the basis of thedemand analysis of the products and the research of file system, combined with thecharacteristic of the design of embedded flash file system, an embedded NAND Flash filesystem based on FAT structure is built on the platform. At the same time thecommunication between Personal Computer and the terminal platform through UniversalSerial Bus is completed. Files can be transferred between the two.Through the debugging and testing of the system it is proved that the system reachesthe function and performance demand as expected, and achieves the anticipated target ofthe research.更多还原