单片机与嵌入式系统应用Issue(11)：15-17,20,4.
DS3231在嵌入式环境文件系统中的应用
Appl ication of DS323 1 in File System of Embedded Environment
摘要
Abstract
In order to provide the accurate time information of file system in embedded environment and make files stored in the external SD card contain detailed time information about creation,modification and access.The paper proposes a solution that high-precision real-time clock chip DS323 1 provides continuous accurate time information to the file system.The paper introduces the storage structure of SD card,discusses the transplant method of FAT32 file system in embedded environment,designs hardware connection interface between DS323 1 and microcontroller C805 1F500,and realizes the read/write operation of time information of DS323 1 by I2 C bus.System test shows that DS323 1 can continuously provide accurate time information to the embedded file system.关键词
实时时钟/DS3231/SD 卡/文件系统/I2C总线Key words
real-time clock/DS323 1/SD card/file system/I2 C bus分类
信息技术与安全科学引用本文复制引用
徐健,陈永冰,刘勇,贾玉柱..DS3231在嵌入式环境文件系统中的应用[J].单片机与嵌入式系统应用,2014,(11):15-17,20,4.基金项目
总装预研基金(项目编号:9140A09050112JB11112)。 （项目编号:9140A09050112JB11112）
