摘要摘要本篇论文主要介绍的一款基于Crotex3内核设计的的MP3播放器。采用STM32F103A系列微处理器作为播放器的CPU，采用由凌通公司生产的DS250-10芯片作为音乐解码芯片。利用MPU6050运动处理模块收集MP3播放器的加速度、空间位置等运动信息，用以控制MP3播放器的播放/暂停、上一首/下一首等功能的实现。通过BQ2057电源管理芯片对锂电池进行充电管理。音量是由光敏电阻收集到的环境光强信息控制。无需按键，用户只需要通过改变播放器的空间位置，就可以控制播放器的功能实现。增加了操作的趣味性，提高了用户的操作体验。使得在如今新鲜招数层出不穷的MP3市场更有竞争力。关键词：MP3播放器，加速度，环境光感应，STM32，DS205-A103IAbstractAbstractThispaperdescribesthedesignofakernel-basedCrotex3oftheMP3player.UsingSTM32F103ASeriesmicroprocessorastheplayeroftheCPU,usingtheLingTongproducedDS250-10chipasthemusicdecodingchip.UseMPU6050motionprocessingmodulecollectsaccelerationMP3player,sportssuchasspatiallocationinformation,tocontroltheMP3player,play/pause,previous/nexttrackfunctionssuchimplementation.ByBQ2057powermanagementchipforlithiumbatterychargemanagement.Volumeisaphotoresistorlightcollectedinformationcontrolenvironment.Nobuttons,theuseronlyneedsbychangingthespatialpositionoftheplayer,theplayercancontroltherealizationofthefunction.Increasesoperationalinterest,improvingtheuser'soperatingexperience.Makingfreshtricksemergingintoday'sMP3marketmorecompetitive.Keywords:MP3player,accelerometer,ambientlightsensor,STM32,DS205-A103II目录目录摘要....................................................................................................................................IAbstract.............................................................................................................................II第一章概述.......................................................................................................................11.1MP3（MovingPictureExpertsGroupAudioLayerIII）...............................................................11.2MP3以及MP3播放器的发展趋势.............................................................................................31.3课题研究内容...............................................................................................................................41.4章节安排.......................................................................................................................................4第二章主控CPU芯片......................................................................................................62.1STM32F103A芯片的基本构成.....................................................................................................62.1.1芯片特点.................................................................................................................................72.1.2芯片应用.................................................................................................................................72.2主控CPU电路...............................................................................................................................9第三章音频解码芯片.....................................................................................................103.1GPDS25芯片的基本构成............................................................................................................103.1.1产品特点..........................................................
