嵌入式系统大容量NAND Flash存储器分区管理设计
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摘要
针对嵌入式系统中对大容量Flash存储器数据存储管理的需求,对大容量NAND Flash存储器分区、数据写入机制进行研究,借鉴FAT文件管理系统的理念,通过定义和动态维护分区属性数据结构的方法,建立了一种简单易行的分区管理机制,控制数据存储管理,并给出了具体的数据结构和设计流程图;结合实际工程应用进行了实验验证和分析,应用结果表明,该方法软件设计简单,资源需求低,实现了对大容量NAND Flash存储器的分区化管理,方便了用户对目标数据的快速检索定位,提高了数据使用效率,同时保证了数据存储的完整性、实时性、正确性,并大大降低了对上位机数据处理的难度;该方法的提出,为嵌入式系统中大容量Flash存储器的使用管理提供了新的思路,具有较高的实用性和推广应用价值。
In view of the data recording and management requirement of high-capacity flash memory for embedded system,a innovate mechanism of partition management has been established by defining and dynamically maintaining partition attribute structure based on the research high capacity NAND flash memory partition,data writing mechanism and the ideas of FAT file management system.The data structure and design flow chart are presented to describe it.To combine with the experiments of actual engineering application,the results show that it can be used to realize the partitioning management of high-capacity flash memory data recording,and rapid detect the target data.It can enhance the efficiency of data and simultaneously keep the dada with integrity,good real-time feature and accuracy,which reduces the difficulty of data processing,Hence,it is significant to provide a new method on the use of high-capacity flash memory with higher practical and popular value.
In view of the data recording and management requirement of high-capacity flash memory for embedded system,a innovate mechanism of partition management has been established by defining and dynamically maintaining partition attribute structure based on the research high capacity NAND flash memory partition,data writing mechanism and the ideas of FAT file management system.The data structure and design flow chart are presented to describe it.To combine with the experiments of actual engineering application,the results show that it can be used to realize the partitioning management of high-capacity flash memory data recording,and rapid detect the target data.It can enhance the efficiency of data and simultaneously keep the dada with integrity,good real-time feature and accuracy,which reduces the difficulty of data processing,Hence,it is significant to provide a new method on the use of high-capacity flash memory with higher practical and popular value.
引文
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[2]邓剑,杨晓非,廖俊卿,FAT文件系统原理及实现[J].计算机与数字工程,2005,33(9):105-108.
[3]王威,等,HCS12微控制器原理及应用[J].北京:北京航空航天大学出版社,2007.
[4]Micron Technology,Inc.m60_4gb_8gb_16gb_ecc_nand.pdf-Rev.N 10/12EN.
[5]Freescale.MC9S12XF512Reference Manual[Z].
[6]邵贝贝.单片机嵌入式应用的在线开发方法[M].北京:清华大学出版社,2004.
[7]Raj Kamal.嵌入式系统:体系结构、编程与设计[M].陈曙晖,译.北京:清华大学出版社,2005.
[8]王宜怀,曹金华.嵌入式系统设计实战---基于粉丝卡尔S12X微控制器[M].北京:北京航空航天大学出版社,2011.
[9]Cormen T H,Leiserson C E,Rivest R L,等.算法导论[M].潘金贵,顾铁成,等,译.北京:机械工业出版社,2006.
[10]Weiss M,ACormen T H.数据结构与算法分析---C语言描述[M].冯舜玺,译.北京:机械工业出版社,2005.
[11]肖楚梅,梁杰申.SD卡在记录汽车CAN总线数据中的应用[J].信息纵横,2009(18):14-16.
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