STM32与eMMC通信的存储系统设计  

Storage System Based on STM32 and eMMC Communication

作　　者：曹雅楠 王康谊[1] 耿生群[2] 刘志国 Cao Yanan;Wang Kangyi;Geng Shengqun;Liu Zhiguo(School of Information and Communication Engineering,North University of China,Taiyuan 030051,China;Beihang University;LIONTEK TECHNOLOGY)

机构地区：[1]中北大学信息与通信工程学院,太原030051 [2]北京航空航天大学 [3]北京镭航世纪科技有限公司

出　　处：《单片机与嵌入式系统应用》2018年第12期40-43,47,共5页Microcontrollers & Embedded Systems

摘　　要：针对微型存储系统存在的一些问题,如存储带宽小、数据导出复杂、系统启动时间长、紧急掉电文件易丢失等,提出了一种能有效解决这些问题的方案。该方案基于Cortex-M7处理平台STM32F7,利用其SDIO接口与高速USB接口搭建了STM32与eMMC通信的硬件电路,并且实现STM32对eMMC的驱动,同时将FAT32文件系统移植到eMMC上,记录文件通过自己建立的文件系统进行初始化,记录过程中数据直接由eMMC写驱动写入记录文件数据区,通过USB直接复制记录文件实现数据导出。In view of the problems existing in the micro storage system,such as small storage bandwidth,complex data export,long system startup time and easy loss of emergency power down files,a solution to solve these problems is proposed.The scheme is based on Cortex-M7 processing platform STM32F7,the SDIO interface and high speed USB interface are used to build the hardware circuit of STM32 and eMMC communication,and it realized the driving of STM32 to eMMC.Meanwhile,the FAT32 file system is transplanted to eMMC,the files is initialized by the file system established by themselves.In the data recording process,eMMC writes the record file in data area.Finally,the system can realize data export by directly coping the record file through USB.

关 键 词：存储系统 STM32F7 eMMC FAT32文件系统 

分 类 号：TP36[自动化与计算机技术—计算机系统结构]