【正文】 v and mp3 files in this design, and some related functions . The difficulty lie in design is focused on understanding the structure of the FAT file system , how to read SD card , the process of decoding in VS103 chip, the control of humanputer interaction and the munication by master and slave. Among of these devices ,STM32F103 series integrates a lowpower, IO resources , munication interface ,small size , affordable and many other advantages . Panasonic , Toshiba , SanDisk Corporation and the United States develop together in August 1999 . SD cards are widely application and flash media , and easy to read . VS1003 is a mp3 , wav decoder chip with many function, builtin DAC and stereo output with no phase difference . TFT as a display make the humanputer interaction easier and programming more concise by integrating touch features. Key words : STM32F103VET6 。 Portable Music Player目錄 目 錄 引言 ..............................................................................................................................................................................1 1 設計任務與思路 .........................................................................................................................................2 設計任務 ........................................................................................................................................................2 設計思路 ........................................................................................................................................................2 2 器件選擇和系統(tǒng)框圖 .............................................................................................................................2 器件選擇 ........................................................................................................................................................2 系統(tǒng)框圖與概述 .........................................................................................................................................2 3 硬件電路設計 ..............................................................................................................................................3 電源模塊 ........................................................................................................................................................3 微控制器模塊 ..............................................................................................................................................4 SD 卡模塊 .......................................................................................................................................................5 音頻解碼模塊 ..............................................................................................................................................6 音 頻放大模塊 ..............................................................................................................................................7 彩晶顯示模塊 ..............................................................................................................................................8 復位模塊 ........................................................................................................................................................9 4 FAT 文件系統(tǒng) ................................................................................................................................................9 FAT 文件系統(tǒng)簡介 .....................................................................................................................................9 FAT 文件系統(tǒng)的讀取操作 ................................................................................................................... 11 5 系統(tǒng)軟件設計 ........................................................................................................................................... 14 STM32 程序調(diào)試 ....................................................................................................................................... 14 STM32 啟動簡析 .............................................................................................................................. 14 STM32 程序測試 .............................................................................................................................. 16 STM32 時鐘系統(tǒng) .............................................................................................................................. 18 TFT 顯示驅(qū)動 ............................................................................................................................................ 20 SD 卡讀取驅(qū)動 .......................................................................................................................................... 22 SD 卡總線拓撲 ................................................................................................................................ 22 寄存器與協(xié)議 ................................................................................................................................. 22 驅(qū)動流程圖 ...................................................................................................................................... 25 VS1003 驅(qū)動設計 ..................................................................................................................................... 25 VS1003 總線拓撲 ........................................................................................................................... 25 目錄 VS1003 主要寄存器 ...................................................................................................................... 27 VS1003 相關(guān)協(xié)議 ........................................................................................................................... 28 讀寫時序 .......................................................................................................................