68-2202-62　Thing Plus Dual-Port Logging Shield　DEV-19217

仕様

• Description
• WecarryseveraldataloggingproductswhichhavemicroSDsocketsonthem：OpenLogArtemisandtheQwiicOpenLogtonamebuttwo.They'regreatforloggingdatatoamicroSDcard,butwhenitcomestoreadingtheloggeddataquicklyyouusuallyhavetopopoutthemicroSDcardandplugitintoyourcomputer.Butwhatifyou'redevelopinganembeddedsystemandyoudon'twanttooraren'tabletoejectthemicroSDcard.EntertheSparkFunThingPlusDual-PortLoggingShield！
• TheSparkFunDual-PortLoggingShieldisaThingPlus/Feather-compatibleboardwhichallowsyoutoaccessyourmicroSDcardoverbothSPIandUSB-C.ItisdesignedtobemountedonorunderoneofourThingPlusboards.YoucanlogdatatoandreaddatafromyourmicroSDcardoverSPIasusual,usingyourfavoriteArduinoSDlibrary.ButyoucanalsoconnectittoyourcomputerviaUSB-Candreadandwritefilesatupto35MBytes/second！Thewritespeediscard-dependentbut,inourtests,we'veroutinelyseenwritespeedsaround20MB/s.
• TheSparkFunDual-PortLoggingShieldhasanATtiny841microcontrolleronittoactasanarbiter：IfyoupowerupyourThingPlus,theATtiny841willautomaticallyputtheDual-PortLoggingShieldintoSPImode,soyourArduinocodecanaccessthemicroSDcardasnormalIfyoupowertheShieldfromyourcomputerbyconnectingitviaUSB-C,theATtiny841willputtheShieldintoSDIO"thumbdrive"mode.Yourcomputercanthenreadandwritedatareallyquickly！Finally,ifyouhavebothyourThingPluspoweredup-andhaveyourcomputerconnected-thenyoucanswitchbetweenthetwomodesbygivingtheATtiny841someverysimplecommandsoverI2C！
• YoucanconfiguretheATtinytoautomaticallydefaulttoSPImodeorSDIO"thumbdrive"modeifbothpowersourcesarepoweredupsimultaneously.It'syourchoice！
• Note：TheUSB2241,whichprovidestheUSBinterface,supportsFAT32,exFATandNTFSoncardsuptoandincluding32GB.Cardslargerthan32GBarenotsupported.
• GetStartedwiththeThingPlusDual-PortLoggingShieldGuide
• Features
• ThingPlus/Feather-compatiblefootprintandbreakoutpins
• ATtiny841microcontroller・TheATtiny841actsasanarbiterandcanputtheshieldintoeitherSPIorSDIO（"thumbdrive"）mode
• USB2241UltraFastUSB2.0MediaController・Supportscardsupto32GB
• SupportsFAT32,exFATandNTFS
• Readandwritespeed：upto35MBytes/second（card-dependent）
• Theboardincludessolderpadsforanoptional24C04I2CEEPROM
• Push-pushmicroSDsocket
• SimpleI2Ccommandsettoswitchmodesandsetthedefaultmode
• Canbepoweredby：・ThingPlus/Feather3.3V
• USB-C5V
• Orboth！
• Fullpowercontrol・Sleepcurrent（PWRLEDdisabled）：300μA
• Powersourcevoltagesensing
• ActivityLED（forSDIO"thumbdrive"mode）
• PowerLED（configurable）