"ARM和Linux平台下嵌入式MP3播放器设计与开发"

ith the booming of the consumptive electronics industry, more and more embedded electronic products have entered into millions of households. Various embedded systems have appeared in numerous industries and applications, among which products combining ARM and Linux are most favored in the market. The embedded MP3 player in this project is designed based on the ARM and Linux platform. The system uses the S3C2440 development board as the hardware platform, and ports the Linux embedded operating system as the software platform. In such a software and hardware environment, the MP3 player is designed and implemented. This paper mainly describes the development method and steps of the MP3 embedded system. Firstly, it installs and builds the cross-development environment of Linux operating system and embedded system, then it is the trimming and porting of Uboot and Linux, the production of the root file system, and the development of the core driver program. In the application program development, it introduces the principles of MP3, the file format of MP3, and realizes the design of MP3 application program based on libmad. Keywords: embedded; ARM; Linux; driver program; MP3.