平板电脑Android BSP底层驱动开发

平板电脑AndroidBSP底层驱动开发第1页共53页平板电脑AndroidBSP底层驱动开发摘要Dynabook是艾伦·凯于1968年所提出的电子书的概念，他想像这是一台可以带着跑的电脑。但这款平板在市场并没有什么人气。1984年首款在消费者平板市场获得成功的产品KoalaPad，允许小孩利用触笔或者手尖在家庭电脑的屏幕上画画，售价比较合理为195美元（约合目前425美元）。第一台商业化的平板电脑是1989年9月上市，由GRiDSystems制造的GRiDPad，它采用了与当时个人电脑相同的MS-DOS操作系统。2001年，微软公司CEO比尔?盖茨第2次提出平板电脑概念，并推出了WindowsXPTabletPC版，使得一度消失多年的平板电脑产品线再次走入人们视线。2010年1月27日，苹果公司发布旗下平板电脑产品——iPad。同一时期，其他品牌厂商也已经着手准备进入这一全新市场，甚至更早展示了设计原型，但最终产品发布和正式销售均落后苹果公司较长时间。与其争锋的便是谷歌的Android系统，谷歌的模式和当年的微软比较相似，虽然其并不生产硬件的平板产品，但其系统开源性和免费性聚拢了一大批的厂商。戴尔、惠普、苹果为代表的欧美PC厂商以及智能手机厂商代表摩托罗拉、黑莓，联想、汉王为代表的国内厂商都发布了多款平板电脑。可以看出这个时代是平板电脑的井喷时代，各种产品层出不穷，因此看出这是平板电脑的黄金年代。近两三年内，谷歌安卓系统平板电脑阵营不断壮大，国内平板自主开发已是热潮；平板电脑开发流程越是熟练，android系统框架实现的研究更透彻；使得强大的linux操作系统快速进军消费电子领域的具体实现；ARM架构的CPU平台应用最广范。现在追逐的是硬件及配置，Android系统升级，linuxBSP底层驱动的稳定；导致是Android上层的Applications品质不断提高；linuxBSP底层驱动开发技术更有水准；熟练的平板电脑开发正进入白热化阶段。平板电脑AndroidBSP底层驱动开发第2页共53页关键词：平板电脑的发展与开发流程；ARM架构的CPU平台硬件配置android系统框架实现；linux操作系统；linuxBSP底层驱动开发；平板电脑AndroidBSP底层驱动开发第3页共53页TABLETPCANDROIDBSPUNDELYINGDRIVERDEVELOPMENTABSTRACT：AccordingTabletPC(English:TabletPersonalComputer,referredtoasaTabletPCFlatPC,Tablet,SlatesOnly),isasmall,portablepersonalcomputer,touchscreenasthebasicinputdevice.Ithasatouchscreenthatallowstheuserthroughastylusordigitalpentothejobratherthanthetraditionalkeyboardormouse.Throughthebuilt-inhandwritingrecognition,on-screensoftkeyboard,voicerecognitionorarealkeyboard(ifthemodelssoequipped).TabletPCbyBillGates,shouldsupportchipsfromIntel,AMDandARMarchitecture,fromMicrosoft'sTabletPCconceptproductpointofview,theTabletPCisanotaflip,nokeyboard,smallenoughtoputordinarypeoplehandbagsbutfullyfunctionalPCdevices.In1964,theRANDtablet,nokeyboarddesign,equippedwithadigitalstylus.UsethetheZhezhistylususerscanmakemenuselections,charting,andeventowritesoftwareandotheroperations.DynabookproposedbyAlanKayin1968bytheconceptofe-books,andheimaginedthatthisisacomputerwitharun.Butthetabletinthemarketandnopopular.1984'sfirstsuccessfulproductintheconsumertabletmarketKoalaPad,allowchildrentousethestylusorfingertipstodrawonthecomputerscreeninthefamily,themorereasonablepriceof$195(about$425).ThefirstcommercializationoftheTabletPCislistedinSeptember1989,manufacturedbyGRiDSystemsGRiDPad,itusesthesameMS-DOSoperatingsystemwiththePC.2001,MicrosoftCEOBill?Gates2ndTabletPCconcept,andthelaunchofWindowsXPTabletPCEdition,makingitoncedisappearedyearsTabletPCproductlineintosightagain.January27,2010,ApplereleaseditsTabletPCproduct-theiPad.Duringthesameperiod,theotherbrandmanufacturershavealsobeenpreparingtoenterthisnewmarket,orevenearlierdemonstratedprototype,butthereleaseofthefinalproductandtheofficialsalesbehindApplelongtime.ItsCommanderisGoogle'sAndroidsystem,Googleisquitesimilar平板电脑AndroidBSP底层驱动开发第4页共53页tothemodelthatMicrosoft,althoughitsnotflatproductsproductionhardware,butitssystemopensourceandfreetogatheralargenumberofvendors.Dell,HP,Apple,representedbythePCmanufacturersinEuropeandAmericaaswellasrepresentativeofthesmartphonemanufacturerMotorola,BlackBerry,Lenovo,HW,domesticmanufacturershavereleasedavarietyofTabletPC.ItcanbeseenthatthiseraistheeraofTabletPC'sblowout,theendlessvarietyofproducts,sotoseethatthisisthegoldenageoftheTabletPC.Thepasttwoorthreeyears,theGoogleAndroidsystemTabletPCcampgrowingdomesticflat-panelself-developmentisthecraze;TabletPCdevelopmentprocessmoreskilled,morethoroughtheandroidsystemframeworktoachievetheresearch;powerfulLinuxoperatingsystemtoquicklyentertheconsumerelectronicstheconcreterealizationofthefield;chasethehardwareconfigurationoftheAndroidsystemupgrade,thethelinuxBSPunderlyingdriverstable;theleadcontinuouslyimprovethequalityoftheAndroidupperApplications;skilledTabletPCdevelopmentisenteringlinuxBSPunderlyingdrivetodevelopmoretechnicallevel;Thewhite-hotstage.Keywords:TabletPCdevelopmentandthedevelopmentprocess;ARMarchitectureCPUplatform;Hardwareconfiguration;frameworkoftheandroidsystemimplementation;linuxoperatingsystem;thelinuxBSPunderlyingDrivenDevelopment;平板电脑AndroidBSP底层驱动开发第5页共53页目录1绪论............................................................................................................................................................71.1平板电脑发展.................................................................................................................................71.1.1平板电脑用户应用特征....................................................................................................71.1.2慧聪邓白氏预测平板电脑发展趋势............................................................................81.2平板电脑开发流.............................................................................................................................81.2.1平板电脑产品定义及评估...............................................................................................91.2.2平板电脑ID设计................................................................................................................91.2.3平板电脑MD设计..............................................................................................................101.2.4平板电脑硬件设计..........................