基于CDMA 6025平台的Flash文件系统的设计

Design of Flash File System Based on 6025 Platform of CDMA

针对CDMA6025手机研发平台设计了一种flash文件系统,其结构主要由driver层、core function层、target function层、manage function层和ffs task层5部分组成,利用消息收发机制实现不同任务之间的数据交换和共享.文件系统的设计主要包括目录结构、文件结构的设计和对象的删除、更名和修改,同时通过查询block中的信息进行了Flash寿命均衡设计.目前在此基础上已经成功进行了系列CDMA手机的研发,该文件系统得到了很好的应用.

A kind of embedded flash file system（ffs） is designed to handset R＆D platform of CDMA 6025. This ffs hi- erarchy is made up of five parts such as driver, core function, target function, manage function and ffs task. Using mes- sage receiveing and dispatching mechanism data exchanging and data sharing is achieved in different tasks. This designs includes mostly designs of directory structure and file structure, deleting, renaming and amending of a object and bal- ance design of flash life by inquiring the information of block. In practice this ffs is applying effectively, and based on it a series of CDMA mobile phones are manufactured.