【正文】 五邑大學(xué)本科畢業(yè)設(shè)計(jì) I 摘 要 MP3 播放器從上世紀(jì) 90 年代末開始，發(fā)展至今已經(jīng)是一種相當(dāng)成熟，廣泛應(yīng)用的電子娛樂消費(fèi)產(chǎn)品。目前市面上的 MP3 播放器種類繁多，功能各異，各種 MP3 方案層出不窮以適應(yīng)不同的需求，本設(shè)計(jì)以 51 單片機(jī)為主控核心， VS1003 為音頻解碼模塊， MicroSD 卡為音頻文件的存儲煤質(zhì)，加上 TFT 彩屏友好的人機(jī)交互界面作為該畢業(yè)設(shè)計(jì)的 MP3 播放器方案。 同時，為提高本設(shè)計(jì)的靈活性，可拓展性，方便后續(xù)升級，引入文件系統(tǒng)，而界面系統(tǒng)可依據(jù)需求進(jìn)行配置。 關(guān)鍵字 ： MP3 播放器， 51單片機(jī)， 音頻解碼，文件系統(tǒng) 五邑大學(xué)本科畢業(yè)設(shè)計(jì) II Abstract MP3 player since the late 1990 s, the development so far is a quite mature and widely used electronic entertainment consumer products. MP3 player currently on the market a wide variety, different function, all kinds of MP3 solutions emerge in endlessly to adapt to the different requirements, the design of 51 singlechip microputer as the core, control VS1003 audio decoding module, MicroSD card for audio files stored coal quality, coupled with TFT color screen friendly humanputer interaction interface as the graduation design of MP3 players. At the same time, in order to improve the flexibility of the design, can expand sex, convenient upgrade followup, the introduction of the file system, and the interface system can be configured according to the requirements. Key words: MP3 players, 51 singlechip, audio decoding, filesysterm 五邑大學(xué)本科畢業(yè)設(shè)計(jì) III 目 錄 摘 要 .......................................................................................................................................... I Abstract............................................................................................................................................II 第 1 章 緒論 ................................................................................................................................. 1 課題背景 ......................................................................................................................... 1 設(shè)計(jì)意義 ......................................................................................................................... 1 方案論證 ......................................................................................................................... 1 第 2 章 系統(tǒng)硬件原理及概述 ..................................................................................................... 3 系統(tǒng)硬件總體框架介紹 ................................................................................................. 3 系統(tǒng)硬件各模塊介紹 ..................................................................................................... 4 主控芯片 STC12C5A60S2 處理器簡介 ............................................................... 4 VS1003 音頻解碼模塊 ........................................................................................ 5 存儲煤質(zhì) MicroSD 卡簡介 .................................................................................. 9 LCD12864 液晶模塊簡介 .................................................................................. 12 按鍵控制電路簡介 ........................................................................................... 12 本章小結(jié) ....................................................................................................................... 13 第 3 章 系統(tǒng)軟件原理及概述 ................................................................................................... 14 系統(tǒng)軟件總體流程介紹 ............................................................................................... 14 Petit FatFS 在 STC12C5A60S2 實(shí)現(xiàn)移植 .................................................................. 15 Petit FatFS 簡介 ........................................................................................... 15 移植流程 ........................................................................................................... 16 VS1003 核心代碼介紹 .................................................................................................. 17 VS1003 相關(guān)細(xì)節(jié)代碼的設(shè)計(jì) .......................................................................... 17 VS1003 初始化介紹 .......................................................................................... 18 VS1003 的正弦測試 .......................................................................................... 20 MirocSD 卡核 心代碼介紹 ............................................................................................ 21 MirocSD 相關(guān)細(xì)節(jié)代碼的設(shè)計(jì) ........................................................................ 21 MirocSD 的初始化流程 .................................................................................... 22 LCD12864 核心代碼介紹 .............................................................................................. 25 按鍵控制電路核心代碼簡介 ....................................................................................... 26 本章小結(jié) ....................................................................................................................... 27 第 4 章 系統(tǒng)調(diào)試與作品展示 ................................................................................................... 28 軟件調(diào)試篇 ................................................................................................................... 28 硬件調(diào)試篇 ................................................................................................................... 29 作品展示 ....................................................................................................................... 30 結(jié) 論 ....................................................................................................................................... 31 致 謝 ....................................................................................................................................... 32 參考文獻(xiàn) ....................................................................................................................................... 33