【作者】 赖武刚；

【导师】 郭勇；

【作者基本信息】 成都理工大学 ， 通信与信息系统， 2008， 硕士

【摘要】 本文主要介绍一种基于嵌入式技术和网络技术的音频播放器的系统设计和实现。系统采用主频为400MHz的ARM9芯片S3C2440A作为嵌入式微处理器,结合现代接口技术,以嵌入式LINUX作为操作系统为软件平台,利用MINGUI开发图形界面,实现了音频播放、网络传输与控制、多种存储方式、彩色液晶显示和键盘输入等功能,该系统主要用于体育场馆的音频播放控制系统、广播播放系统和公众场合的音频播放系统中。嵌入式linux IP播放器的包括嵌入式硬件设计和嵌入式软件设计。本文详细的介绍了设计过程。嵌入式硬件设计包括ARM9芯片S3C2440A核心板的原理图设计和六层高速PCB的绘制;S3C2440A与TFT液晶、U盘、SD卡、10M/100M网络、IDE硬盘、串口、ⅡS、ⅡC等外围接口电路设计。本文中给出了各个外围电路设计方法和设计原理图。嵌入式系统软件设计在嵌入式硬件设计的基础上,包括BootloaderⅥⅥ的移植、嵌入式linux内核的剪裁与移植,并制作嵌入式linux的根文件系统,完成设备驱动程序的编写与调试。在系统集成后,对播放器系统进行了硬件和软件功能性和稳定性的测试。该系统具有特殊的两路音频系统、多种存储方式可选、设备接口丰富、网络传输控制、硬件易扩展、音质效果好、图形用户界面美观友好,运行稳定可靠等特点。此播放器系统在音频播放场合中具有很强的适用性,具有良好的应用前景,具有很好的实用价值和经济效益。更多还原

【Abstract】 This paper mainly introduce design and implementation of a audio player system based on embedded technology and network technology.The system uses a frequency of 400 MHz chip S3C2440A as the ARM9 embedded microprocessor, combined with modern interface technology, using LINUX as the operating system for embedded software platform and MINGUI as graphical interface development.In this system ,the audio players, network transmission and control, a variety of storage, color LCD display and keyboard input, and other functions is implemented. The system is mainly used for sports venues audio player control system, radio broadcast system and public places in the audio system.Embedded linux IP players syetem design is comprise of embedded hardware and embedded software design. This paper detailed introduction of the design process. Hardware design is comprised of S3C2440A core board’s Schematic and six high-speed PCB design drawing;the circuit of TFT LCD, USB, SD Card, 10 M/100M network, IDE hard, serial, IIS, IIC, and so on.The paper offer the various external circuit schematics. Embedded in the embedded system software design on the basis of hardware design, including the transplantation Bootloader VIVI, embedded linux kernel of the crop and transplantation and making of embedded linux the root file system.The design and debug of Device drivers is completed. the system hardware and software features and stability of the test of the player is completed.The system has a special two-way audio system, a variety of storage options, rich interface equipment, network transmission control, hardware easy to expand, sound effects, and beautiful and friendly graphical user interface, stable and reliable operation, and other characteristics. This player system applicated in the audio players has a good prospect, has a good practical value and economic benefits.更多还原