嵌入式文件系统的实现及性能改进

Implementation and performance improvement of embedded file systems

随着嵌入式数据采集系统的不断发展,将数据以某种常用文件格式保存在外存中的方法也得到了越来越广泛的使用。文章基于LPC2210和CF卡,实现了以FAT16为文件格式的存储系统;同时为了满足存储系统对文件存取速度的需要,从底层驱动和接口函数等角度对系统性能进行了改进。

With the development of embedded data acquisition systems, it becomes popular to store the data in some common file systems. In this paper, a file system compatible with FAT16 is implemented based on LPC2210 and the Compact Flash（CF） card. In order to improve the accessing speed, some optimizations are proposed in several aspects involving device drivers and interface functions.