预览加载中，请您耐心等待几秒...

基于FPGA的硬件实时操作系统设计.docx

预览
1/3
2/3
3/3

在线预览结束，喜欢就下载吧，查找使用更方便

下载提示 文本预览

如果您无法下载资料，请参考说明：

1、部分资料下载需要金币，请确保您的账户上有足够的金币

2、已购买过的文档，再次下载不重复扣费

3、资料包下载后请先用软件解压，在使用对应软件打开

基于FPGA的硬件实时操作系统设计 Introduction FPGA(FieldProgrammableGateArray)isahighlyconfigurablehardwaredevicewhichcanbeprogrammedtoperformspecifictasks.Itiswidelyusedinvariousindustriessuchasaerospace,telecommunications,andindustrialautomationduetoitsflexibility,reconfigurability,andhighperformance.FPGAtechnologyhasevolvedovertheyearstoprovidemoreadvancedfeaturessuchasembeddedprocessors,dedicatedmemory,andhigh-speedinterfaceswhichmakeitfeasibletoimplementreal-timeoperatingsystemsonFPGA. Areal-timeoperatingsystemisatypeofoperatingsystemthatguaranteesadeterministicresponsetimetoallevents,especiallythosethatrequireatimelyresponse.Theresponsetimeisusuallymeasuredinmicrosecondsormilliseconds.Real-timeoperatingsystemsarecommonlyusedinvariousapplicationssuchasindustrialautomation,medicaldevices,andcommunicationsystems.Thereal-timeoperatingsystemdesignisdrivenbytheneedtoprovideaccurate,predictable,andreliableresponsestoexternalstimuli. Inthispaper,wepresentadesignforareal-timeoperatingsystem(RTOS)implementedonanFPGA.Thedesignisbasedonamicrokernelarchitectureandincorporatesvariousfeaturessuchasmemorymanagement,taskscheduling,inter-taskcommunication,andinterrupthandling.WealsodiscussthechallengesassociatedwiththedesignandimplementationofanFPGA-basedreal-timeoperatingsystem. DesignofFPGA-BasedReal-TimeOperatingSystem ThereareseveraldesignconsiderationsthatneedtobetakenintoaccountwhendesigninganFPGA-basedreal-timeoperatingsystem.Theseincludetaskscheduling,inter-taskcommunication,memorymanagement,andinterrupthandling. TaskScheduling Taskschedulingisoneofthekeycomponentsofanyreal-timeoperatingsystem.Itinvolvesdeterminingwhichtasksshouldbeexecutedatanygiventime.Theschedulingalgorithmusedshouldbedesignedtominimizeresponsetimeandmaximizesystemutilization.Thereareseveralschedulingalgorithmsthatcanbeusedinreal-timeoperatingsystems,includingpriority-basedscheduling,round-robinscheduling,andearliestdeadlinefirst(EDF)scheduling. Inourdesign,wechosetousetheEDFschedulingalgorithmwhichisknowntoprovide