所需E币: 4
时间: 2019-12-24 21:19
大小: 350.65KB
ThisapplicationnotedescribestheusageoffileI/OfunctionsusingMicrochip’smemorydiskdrivefilesystemlibrary.Microchip’smemorydiskdrivefilesystemis:•BasedonISO/IEC9293specifications•KnownastheFAT16filesystem,usedonearlierDOSoperatingsystemsbyMicrosoft®Corporation•AlsosupportstheFAT32filesystem•MostpopularfilesystemwithSD(SecureDigital)card,CF(CompactFlash®)cardandUSBthumbdriveMostSDcardsandMMCs(MultiMediaCards),particu-larlythosesizedbelow2gigabytes(GBs),usetheFAT16standard.TheFAT32standardcanbeusedtoaddressmemorysizedbetween2gigabytesand2terabytes.Thisapplicationnoteprovidesamethodtoreadand/orwritetothesestoragedevicesthroughamicrocontroller.ThedataofthesestoragedevicescanbereadbyaPC,andthedatawrittenbyaPCcanbereadbyamicrocontroller.Mostoperatingsystems(i.e.,Windows®XP)supporttheFAT16andFAT32filesystems.AN1045ImplementingFileI/OFunctionsUsingMicrochip’sMemoryDiskDriveFileSystemLibraryAuthors:PeterReenandNaveenMohanswamyINTERFACEMicrochipTechnologyInc.ThePICtailDaughterBoardforSDandMMC,MicrochipproductnumberAC164122,providesanINTRODUCTIONinterfacebetweenSDorMMCandaThisapplicationnotedescribestheusageoffileI/OPICmicrocontrollerthroughtheSerialPeripheralfunctionsusingMicrochip’smemorydiskdrivefileInterface(SPI)bus.ThePICtailDaughterBoard……