嵌入式主机上的USB人机接口设备类

WiththeintroductionofMicrochip’smicrocontrollerswith

theUSBOTGperipheral,microcontrollerapplications

caneasilysupportUSBembeddedhostfunctionality.

Traditionally,thePCisusedasahostinanUSBnetwork.

Now,withMicrochip’smicrocontrollerwithhostcapability,

thehostcanbeimplementedinanembeddedsystem.

Someofthemostcommonusesofthiscapabilityareto

interfacetoHumanInterfaceDevices(HIDs).AN1144USBHumanInterfaceDeviceClassonanEmbeddedHostAuthor:AmardeepGuptaTheclass,subclassandprotocoldesignatorsforanHIDMicrochipTechnologyInc.devicearenotcontainedinthebDeviceClass,bDeviceSubClassandbDeviceProtocolfieldsofthedevicedescriptor.Instead,thesefieldsareallsettoINTRODUCTION0x00andthedesignatorsarespecifiedinthebInterfaceClass,