| 基于TMS320C6747的SD卡文件系统设计与实现 |
| |
| 引用本文： | 孙晓通,李双田. 基于TMS320C6747的SD卡文件系统设计与实现[J]. 电声技术, 2015, 39(12) |
| |
| 作者姓名： | 孙晓通 李双田 |
| |
| 作者单位： | 中国科学院声学研究所,中国科学院声学研究所 |
| |
| 摘 要： | 数字信号处理系统会产生大量数据,本文基于TMS320C6747数字信号处理器介绍一种SD卡结合FAT32文件系统的方案用于解决这些数据的存储和转移问题。硬件方面, 在SD模式下采用DMA控制进行数据传输以提高扇区读写速率；软件方面,实现符合FAT32规范的文件系统操作,具有自动创建文件,以固定长度数据为单位写入文件,快速搜索空闲簇等特点,尽量减少扇区读写次数,以最大限度地满足语音数字信号处理系统大量数据的连续存储要求。
|
| 关 键 词： | SD卡 文件系统 TMS320C6747 DMA |
| 收稿时间： | 2015-01-29 |
| 修稿时间： | 2015-01-29 |
Design and Implementation of SD Card File System Based on TMS320C6747 |
| |
| SUN Xiao-tong and LI Shuang-tian. Design and Implementation of SD Card File System Based on TMS320C6747[J]. Audio Engineering, 2015, 39(12) |
| |
| Authors: | SUN Xiao-tong and LI Shuang-tian |
| |
| Affiliation: | Institute of Acoustics,Chinese Academy of Sciences,Institute of Acoustics,Chinese Academy of Sciences |
| |
| Abstract: | Digital signal acquisition system always produce a large number of data. This paperScombinesSthe SD cardSand FAT32 fileSsystem based on TMS320C6747 to solve the problem of storage andStransfer about the data.SOn one hand, the hardware use 4 line SD mode to improve the data transmission rate and use DMA for data access to reduce the processorSintervention; On the other hand, the software optimize the FAT32 file system to reduce the read and write times of the SD card. To meet theSrequirements ofScontinuousSstorageSof large amounts of data, there are some features of the optimized file system. Such as create new file automatically; Write into the file with block data; Search the free cluster in a quick way. |
| |
| Keywords: | SD card File system TMS320C6747 DMA |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《电声技术》浏览原始摘要信息 |
|
点击此处可从《电声技术》下载全文 |
|
