stm32 mp3播放器毕业论文

毕业论文

stm32 mp3播放器毕业论文

题目： 基于STM32的MP3播放系统设计

专 业 电子信息科学与技术

摘要

MP3是一种高质量音乐压缩标准，采用MP3压缩的数据量可以缩小到1/12，音质却没有多少损失。由于MP3音乐的较小数据量和高质量的播放效果，使它很快成为一种集音频播放、数据存储为一身的数码产品，并深受人们的喜爱。本文采

毕业论文

用STM32系列微控制器，结合解码芯片VS1003、SD卡、 LCD等外围设备设计并实现了MP3播放器。其主要功能有：播放VS1003支持的所有音频文件，如MP3、WMA、WAV文件，且音质非常好；通过摇杆控制播放上一首/下一首，通过电位计来控制音量增减，通过LCD显示音量图标和播放状态等；本系统还计划实现读卡器功能，PC机可通过USB接口直接对开发板上的SD卡进行读写操作，以方便拷贝音频文件。

关键字：MP3播放器、CortexM3、STM32V100、VS1003

毕业论文

ABSTRACT

Is a high quality MP3 music compression standard, with MP3 compressed data can be reduced to 1 / 12, but there is little loss of sound quality. MP3 music as the smaller amount of data and high-quality playback, it will soon become a set of audio playback, the data is stored as a digital product, and very popular. In this paper, STM32 family of microcontrollers, combined with decoder chip VS1003, SD card, LCD and other peripherals design and implementation of MP3 players. Its main functions are: Play VS1003 supports all audio files, such as MP3, WMA, WAV files, and the sound quality is very good; through the joystick control playback on a / to the next, through a potentiometer to control volume change, through the LCD show the volume icon and play status, etc.; The system also plans to achieve reader function, PC machine interfaces via USB directly to the development board of the SD card read and write operations to facilitate the copying audio files.

Key words: MP3 Players; CortexM3; STM32V100; VS1003

毕业论文

目 录

摘要 .......................................................................................................................................................I ABSTRACT ........................................................................................................................................... III 目 录 ........................................................................................................................................... IV 第一章 绪论 .................................................................................................................................... 1

1.1 选题背景 ............................................................................................................................ 1 1.2 国内外研究现状及意义 ................................................................................................. 1 1.3 设计和研究方向 .............................................................................................................. 2 第二章 系统设计理论基础 ......................................................................................................... 3

2.1 Arm嵌入式系统 ............................................................................................................... 3 2.2 STM32V100 Arm开发板 .................................................................................................. 3 2.3 SD卡 .................................................................................................................................... 3 2.4 FAT16文件系统 ............................................................................................................... 4

2.4.1 DBR区 ........................................................................................................................ 4 2.4.2 FAT区 ........................................................................................................................ 5 2.4.3 FDT区 ........................................................................................................................ 5 2.4.4 DATA区 ...................................................................................................................... 5

2.5 音频编解码器 ................................................................................................................... 5 2.6 液晶显示器 ....................................................................................................................... 6 2.7 电路焊接 ............................................................................................................................ 6 第三章 系统总体设计方案及硬件环境 .................................................................................. 7

3.1 设计目标 ............................................................................................................................ 7 3.2 设计原理 ............................................................................................................................ 7

3.2.1 中央处理器工作原理 ............................................................................................... 7 3.2.2 电源部分原理 ........................................................................................................... 8 3.2.3 音频解码器介绍 ....................................................................................................... 8 3.2.5 液晶显示原理 ........................................................................................................... 9

3.3模块设计方案对比 ......................................................................................................... 10

3.3.1 控制模块 ................................................................................................................. 10 3.3.2 电源模块 ................................................................................................................. 10 3.3.3 音频解码器模块 .................................................................................... …… 此处隐藏：5706字，全部文档内容请下载后查看。喜欢就下载吧 ……