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1、ABSTRACTABSTRACTLED,asknownasLightEmittingDiode,leadsthepaceofsocialdevelopment,thisilluminationmethodwithlonglife,highluminousefficiency,noradiationandlowpowerconsumption,appearswithhighspeedinvariouskindsofLEDdisplayboards,publicitycolumnandlargescreeninthe
2、streets.Afteraccustomedtolargeandsmallsquare-shapedLEDdisplaydevice,anovelrotatingLEDdisplaybasedonthepersistenceofvisioneffectgraduallyappearedinourvision.ThisrotatingLEDdisplayhasmanyincomparableadvantages,suchaslowcost,lowpower,smallspaceandcouldbeinstalle
3、donanyobjectwitharotatingpropertyanddoesnottakeuptoomuchvolume.ThispaperanalyzesthestructureandalgorithmofrotatingLEDdisplay,includingthecorealgorithmsuchasfull-colorLEDcolormixing,synchronizationofmultipledisplayarms,self-adaptivationofspeedandPWMdimmingmeth
4、od.QtisaCross-platformC++graphicaluserinterfaceapplicationframework.Accordingtothealgorithm,thispaperdevelopedinlinewiththerequirementsoftherotationfull-colorLEDdisplaymodulosoftwareusingtheQtframework,toobtainthedesiredpolarLEDdotmatrixcolordata.Onthisbasis,
5、inordertomeettherequirementsofsoftwarecomplexityandreal-timeproperty,wechosetheembeddedreal-timeRT-ThreadoperatingsystemwhichdevelopbyChineseteamwithfunctionsofthreadmanagementandscheduling;basedonthealgorithms,afterwritinguserprogramsanddriversintheRT-Thread
6、Architecture,wecanprocesstheimagedataandcontrolLEDlight.AllembeddedsoftwarewascodedwithEclipse,anddebuggedwiththeIARforEclipseplug-in.Inordertomeettheperformancerequirements,butalsoinordertosupportRT-Thread,thispaperchosetheSTM32seriesMCUasthemasterchip,STM32
7、seriesMCUisbasedonARM®Cortex™-M332-bitRISCcore,andhasthemaximumfrequencyof72MHzwithupto512KofFlashand64KofSRAM.Peripheralhardwaremoduleincludesamulti-channelfull-colorLEDdriverchip,Bluetoothmodules,powersupplymodules,Hallsensormodule.AllschematicdrawingandPCB
8、layoutwasaccomplishedusingAltiumDesigner.ThispaperresearchedanddesignedthehardwareandsoftwareoftheentireIII万方数据ABSTRACTrotatingLEDdisplaysystem,completedthetaskandachievedthedesiredgoal.F
