With the application of embedded system gradually extensive,all kinds of requirements in embedded operating system are increasing.File system is a core component of the operating system.
File system of embedded operating system includes document organization and management structure.It is the core of embedded operating system.The file system is a group of files and directories operation in ecternal.Documents can be read and write, directories can be created and deleted.And internally,the file system is very different. File system design must take into account the storage area of the distribution system and how to record documents,which block the use of such.File system performance and reliability also are important issues.The file systems of each operating systems are not necessarily the same,which is mainly reflected in the document storage space of the dynamic allocation mechanism.Documents system has its own characteristics.
File system based on the ARM embedded controller LPC2214 is presented in this paper. Many embedded applications involving data processing needed file system.The operation of embedded file system an has its own characteristics.Therefore,to complete these function need improving the function of the traditional file system.So this graduation design mission is fully familiar with the traditional system of documentation,according to the requirements of embedded systems,completing simple file system which includes functions of file creation and reading,writing,deleted file manipulation etc..
