Cypress-USB教程第2講課件

Lecture2AgendaFirstthreeUSBlayersSignalingPacketsTransfersHands-on:BULKINtransfersusingEZ-USBchipandtoolsKeilIntegratedDevelopmentEnvironment(IDE)EZ-USBControlPanelOSInterfaceRequestsTransfersTheUSBOnionPacketsSignalingSignalingReflected-waveSignaling

1footcabledriverreceiverReflected-waveSignaling

2metercabledriverreceiverReflected-waveSignaling

5metercabledriverreceiverTheSIE

(SerialInterfaceEngine)SerialInterfaceEngine(SIE)D+BytesUSBTransceiverD+PacketsPackets:IdentifiedbyPIDSThreePacketTypesWhattheSIEDoesSerialInterfaceEngine(SIE)SYNCOUTADDRENDPCRC5TokenPacketSYNCDATA1PayloadDataCRC16DataPacketSYNCACKSYNCOUTADDRENDPCRC5TokenPacketSYNCDATA0PayloadDataCRC16DataPacketSYNCACKH/SPktPayloadDataPayloadDataACKD+D-USBTransceiverTransfersBulkControlIsochronousInterruptBulkINTransfer(a)INADDRENDPCRC5TokenPacketDATA1PayloadDataCRC16DataPacketACKH/SPktINADDRENDPCRC5TokenPacketDATA0PayloadDataCRC16DataPacketACKH/SPktHDHHHDgood—notethedatatogglegoodBulkINTransfer(b)INADDRENDPCRC5TokenPacketNAKH/SPktINADDRENDPCRC5TokenPacketDATA1PayloadDataCRC16DataPacketACKH/SPktHDHHDINADDRENDPCRC5TokenPacketDATA0PayloadDataCRC16DataPacketACKH/SPktHDHgoodgoodnotreadyBulkINTransfer(c)INADDRENDPCRC5TokenPacketDATA1PayloadDataCRC16DataPacketH(H)DINADDRENDPCRC5TokenPacketDATA1PayloadDataCRC16DataPacketACKH/SPktHHDgood—notesamedataanddata

togglehostseeserror;noresponseBulkINTransfer(d)INADDRENDPCRC5TokenPacketSTALLH/SPktHDINADDRENDPCRC5TokenPacketH(D)devicehasaproblemdevicedetectstokenerrorordoesnotrespondBulkOUTTransfer(a)OUTADDRENDPCRC5TokenPacketDATA0PayloadDataCRC16DataPacketACKH/SPktOUTADDRENDPCRC5TokenPacketDATA1PayloadDataCRC16DataPacketACKH/SPktHHDHDHgood—notethedatatogglegoodBulkOUTTransfer(b)OUTADDRENDPCRC5TokenPacketDATA1PayloadDataCRC16DataPacketACKH/SPktHDHOUTADDRENDPCRC5TokenPacketDATA0PayloadDataCRC16DataPacketACKH/SPktHHDgoodgoodOUTADDRENDPCRC5TokenPacketDATA0PayloadDataCRC16DataPacketNAKH/SPktHHDdevicenotreadyfordatahostsendsdataanywayBulkOUTTransfer(c)OUTADDRENDPCRC5TokenPacketDATA1PayloadDataCRC16DataPacketH(D)HOUTADDRENDPCRC5TokenPacketDATA1PayloadDataCRC16DataPacketACKH/SPktHDHgooddeviceseeserror;noresponseBulkOUTTransfer(d)OUTADDRENDPCRC5TokenPacketSTALLH/SPktHDOUTADDRENDPCRC5TokenPacketH(D)devicehasproblemdevicedetectstokenerrorDATA1PayloadDataCRC16DataPacketHDATA1PayloadDataCRC16DataPacketHControlTransferINADDRENDPCRC5TokenPacketDATA1PayloadDataCRC16DataPacketACKH/SPktDATA08bytesSetupDataCRC16DataPacketACKH/SPktSETUPADDRENDPCRC5TokenPacketHHDDATA1OUTADDRENDPCRC5TokenPacketCRC16DataPktNAKH/SPktHHDHDHDATA1OUTADDRENDPCRC5TokenPacketCRC16DataPktACKH/SPktHHDControloperationnotcompletedControloperationcompletedSETUPDATAHANDSHAKEInterruptIN&OUTINADDRENDPCRC5TokenPacketDATA1PayloadDataCRC16DataPacketACKH/SPktINADDRENDPCRC5TokenPacketDATA0PayloadDataCRC16DataPacketACKH/SPktHDHHHDgood—notethedatatogglegoodOUTADDRENDPCRC5TokenPacketDATA0PayloadDataCRC16DataPacketACKH/SPktOUTADDRENDPCRC5TokenPacketDATA1PayloadDataCRC16DataPacketACKH/SPktHHDHDHgood—notethedatatogglegoodInterrupttransfersareindistinguishablefromBULKtransfers.Theyoccuratmostonceperframe.

IsochronousTransferINADDRENDPCRC5TokenPacketDATA0PayloadDataCRC16DataPacketOUTADDRENDPCRC5TokenPacketDATA0PayloadDataCRC16DataPacketNote:AlwaysDATA0PID,noACKHDHHHands-on:

BulkINtransfers

usingtheEZ-USBchip

andtoolsBULKINTransfer

Registerandbitassignments/*bulkin_a.C6-18-00LTHASimplebulkINtransfer.LoadsEP2INbufferwithanincrementingcount,thenarmsIN2fortransfer.Whentransmitted,replacebytezerooftheEP2INbufferwithacountindicatingthenumberofINtransfersandre-armEP2INforthenextINtransfer.*/xdatavolatilecharIN2BUF[64]_at_0x7E00;

//TRMp.12-3xdatavolatilecharIN2BC_at_0x7FB9;

//TRMp.12-34xdatavolatilecharIN2CS_at_0x7FB8;

//TRMp.12-32#define bBSY 0x02

//TRMp.12-32BULKINTransfer

Ccodecharj,count;main(){for(j=0;j<64;j++) //fillIN2bufferwithincrementingcount

IN2BUF[j]=j;IN2BC

=50; //armthefirsttransfercount=0; //initializetransfercounterwhile(1) //forever { while(IN2CS

&bBSY); //loopwhileIN2busybitisHI count++; //busybitwentLO--IN2BUFreadyformoredata

IN2BUF[0]=count; //replacefirstbufferbytewithcount

IN2BC =50; //armthenextIN2transferbyloadingbytecount } }FirstProjectTutorial

Makeafolderforallclassprojects

Firstprojectfolderis‘bulkin’1StartuV2,CreateanewProject

Navigateto‘usbcode\bulkin’234SelectDevice:EZ-USB(AN21XX)5,type(orpaste)‘bulkin.c’67Saveas‘bulkin.c’8Project/Targets…/AddFiles(selectSourceGroup1)9Select‘bulkin.c’,Addtoproject10Nowit’sshownunderSourceGroup1Project/Options…11Outputtab,check‘CreateHEXFile’box12Click‘buildtarget’13Checkfor‘bulkin.hex’fileIfit’notthere,the‘createHEXfile’projectoptionisnotchecked(step12)14ConnecttheEZ-USBDevBoardConnecttheEZ-USBboardtoaUSBportNOTE:Win2Kmayadvisethatyouneed‘a(chǎn)dministratorprivileges’toinstallRedPWRlightindicatespresenceofVbus(5VfromUSBconnector)Greenlight

meanssuccess.Specifically:TheEZ-USBdriveiscorrectlyinstalledThesystemrecognizedtheboardThedebugmonitorprogramhasloadedsuccessfullyNote:PressingboardRESETdisconnects,thenreconnectstheboardasifyouhaddoneitmanually.17Start‘ControlPanel’151615aNote:ThisisaskedonlyonceandstoredintheRegistry.EndpointTypeAlternateSetting(Interface=0)012MaxPacketSize(bytes)0CTL6464641ININT016642INBULK064642OUTBULK064644INBULK064644OUTBULK064646INBULK064646OUTBULK064648INISO0162568OUTISO0162569INISO016169OUTISO0161610INISO0161610OUTISO01616FromtheTRMDownload‘bulkin.hex’intoboard1819Viewdownloadedhexfile20SelectEndpoint2-IN2122Cleartextwindow,Click‘BulkTransfer’232450Bytesweretransferred