svpwm源程序.doc
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/TIFile$Revision:
/main/8$
//Checkin$Date:
April21,200815:
41:
53$
//###########################################################################
//
//FILE:
Example_2833xEPwmUpDownAQ.c
//
//TITLE:
空间电压矢量产生程序SVPWM
//
//ASSUMPTIONS:
//
//ThisprogramrequirestheDSP2833xheaderfiles.
//
//MonitorePWM1-ePWM3pinsonanoscilloscopeasdescribed
//below.
//
//EPWM1AisonGPIO0-------5脚
//EPWM1BisonGPIO1-------6脚
//
//EPWM2AisonGPIO2-------7脚
//EPWM2BisonGPIO3-------10脚
//
//EPWM3AisonGPIO4-------11脚
//EPWM3BisonGPIO5-------12脚
//
//
//###########################################################################
//$TIRelease:
DSP2833x/DSP2823xHeaderFilesV1.20$
//$ReleaseDate:
August1,2008$
//###########################################################################
#include"DSP28x_Project.h"//DeviceHeaderfileandExamplesIncludeFile
//Prototypestatementsforfunctionsfoundwithinthisfile.
voidInitEPwm1Example（void）;
voidInitEPwm2Example（void）;
voidInitEPwm3Example（void）;
voidsvpwmGen（void）;
interruptvoidsvpwm_isr（void）;
volatilefloatUalpha,Ubeta;
volatilefloatA,B,C;
volatilefloatT0,T1,T2,T3,T4,T5,T6;
volatilefloatTaon,Tbon,Tcon;
floatUa,Ub,Uc;
floatTs;
inta,b,c;
intN=0,sector=0;
#defineTPRD800
#defineUdc800
voidmain（void）
{
//Step1.InitializeSystemControl:
//PLL,WatchDog,enablePeripheralClocks
//ThisexamplefunctionisfoundintheDSP2833x_SysCtrl.cfile.
InitSysCtrl（）;
//Step2.InitalizeGPIO:
//ThisexamplefunctionisfoundintheDSP2833x_Gpio.cfileand
//illustrateshowtosettheGPIOtoit'sdefaultstate.
//InitGpio（）;//Skippedforthisexample
//ForthiscasejustinitGPIOpinsforePWM1,ePWM2,ePWM3
//ThesefunctionsareintheDSP2833x_EPwm.cfile
InitEPwm1Gpio（）;
InitEPwm2Gpio（）;
InitEPwm3Gpio（）;
//Step3.ClearallinterruptsandinitializePIEvectortable:
//DisableCPUinterrupts
DINT;
//InitializethePIEcontrolregisterstotheirdefaultstate.
//ThedefaultstateisallPIEinterruptsdisabledandflags
//arecleared.
//ThisfunctionisfoundintheDSP2833x_PieCtrl.cfile.
InitPieCtrl（）;
//DisableCPUinterruptsandclearallCPUinterruptflags:
IER=0x0000;
IFR=0x0000;
//InitializethePIEvectortablewithpointerstotheshellInterrupt
//ServiceRoutines（ISR）.
//Thiswillpopulatetheentiretable,eveniftheinterrupt
//isnotusedinthisexample.Thisisusefulfordebugpurposes.
//TheshellISRroutinesarefoundinDSP2833x_DefaultIsr.c.
//ThisfunctionisfoundinDSP2833x_PieVect.c.
InitPieVectTable（）;
//Interruptsthatareusedinthisexamplearere-mappedto
//ISRfunctionsfoundwithinthisfile.
EALLOW;//ThisisneededtowritetoEALLOWprotectedregisters
PieVectTable.EPWM1_INT=&svpwm_isr;
//PieVectTable.EPWM2_INT=&epwm2_isr;
//PieVectTable.EPWM3_INT=&epwm3_isr;
EDIS;//ThisisneededtodisablewritetoEALLOWprotectedregisters
//Step4.InitializealltheDevicePeripherals:
//ThisfunctionisfoundinDSP2833x_InitPeripherals.c
//InitPeripherals（）;//Notrequiredforthisexample
//Forthisexample,onlyinitializetheePWM
EALLOW;
SysCtrlRegs.PCLKCR0.bit.TBCLKSYNC=0;
EDIS;
InitEPwm1Example（）;
InitEPwm2Example（）;
InitEPwm3Example（）;
EALLOW;
SysCtrlRegs.PCLKCR0.bit.TBCLKSYNC=1;
EDIS;
//Step5.Userspecificcode,enableinterrupts:
//EnableCPUINT3whichisconnectedtoEPWM1-3INT:
IER|=M_INT3;
//EnableEPWMINTninthePIE:
Group3interrupt1-3
PieCtrlRegs.PIEIER3.bit.INTx1=1;
//PieCtrlRegs.PIEIER3.bit.INTx2=1;
//PieCtrlRegs.PIEIER3.bit.INTx3=1;
//EnableglobalInterruptsandhigherpriorityreal-timedebugevents:
EINT;//EnableGlobalinterruptINTM
ERTM;//EnableGlobalrealtimeinterruptDBGM
//Step6.IDLEloop.Justsitandloopforever（optional）:
for（;;）
{
asm（"NOP"）;
}
}//main结束
//=======================================================================
interruptvoidsvpwm_isr（void）
{
svpwmGen（）;
//SetComparevalues
EPwm1Regs.CMPA.half.CMPA=Taon;//adjustdutyforoutputEPWM1A
EPwm2Regs.CMPA.half.CMPA=Tbon;//adjustdutyforoutputEPWM2A
EPwm3Regs.CMPA.half.CMPA=Tcon;//adjustdutyforoutputEPWM3A
//ClearINTflagforthistimer
EPwm1Regs.ETCLR.bit.INT=1;
//Acknowledgethisinterrupttoreceivemoreinterruptsfromgroup3
PieCtrlRegs.PIEACK.all=PIEACK_GROUP3;
}
voidInitEPwm1Example（）
{
//SetupTBCLK
EPwm1Regs.TBPRD=TPRD;//TPRD=800,Period=1600TBCLKcounts
EPwm1Regs.TBPHS.half.TBPHS=0;//SetPhaseregistertozero
EPwm1Regs.TBCTR=0x0000;//Clearcounter
//Setupcountermode
EPwm1Regs.TBCTL.bit.CTRMODE=TB_COUNT_UPDOWN;//Symmetricalmode
EPwm1Regs.TBCTL.bit.PHSEN=TB_DISABLE;//////////////////////////Mastermodule
EPwm1Regs.TBCTL.bit.PRDLD=TB_SHADOW;
EPwm1Regs.TBCTL.bit.SYNCOSEL=TB_CTR_ZERO;/////////////////////Syncdown-streammodule
//SetupTpwm
EPwm1Regs.TBCTL.bit.HSPCLKDIV=TB_DIV2;//ClockratiotoSYSCLKOUT
EPwm1Regs.TBCTL.bit.CLKDIV=5;//原为TB_DIV1，对于上下计数：
Tpwm=2xTBPRDxTTBCLKFpwm=1/（Tpwm）
//Setupshadowing
EPwm1Regs.CMPCTL.bit.SHDWAMODE=CC_SHADOW;
EPwm1Regs.CMPCTL.bit.SHDWBMODE=CC_SHADOW;
EPwm1Regs.CMPCTL.bit.LOADAMODE=CC_CTR_ZERO;//loadonCTR=Zero
EPwm1Regs.CMPCTL.bit.LOADBMODE=CC_CTR_ZERO;//loadonCTR=Zero
//Setactions
EPwm1Regs.AQCTLA.bit.CAU=AQ_SET;//setactionsforEPWM1A
EPwm1Regs.AQCTLA.bit.CAD=AQ_CLEAR;
//SetDead-band
EPwm1Regs.DBCTL.bit.OUT_MODE=DB_FULL_ENABLE;//enableDead-bandmodule
EPwm1Regs.DBCTL.bit.POLSEL=DB_ACTV_HIC;//ActiveHicomplementary
EPwm1Regs.DBFED=50;//FED=50TBCLKs
EPwm1Regs.DBRED=50;//RED=50TBCLKs
//InterruptwherewewillchangetheCompareValues
EPwm1Regs.ETSEL.bit.INTSEL=ET_CTR_ZERO;//SelectINTonZeroevent
EPwm1Regs.ETSEL.bit.INTEN=1;//EnableINT
EPwm1Regs.ETPS.bit.INTPRD=ET_3RD;//GenerateINTon3rdevent
/*
//SetComparevalues
//==============================================================
EPwm1Regs.CMPA.half.CMPA=500;//adjustdutyforoutputEPWM1A
EPwm2Regs.CMPA.half.CMPA=600;//adjustdutyforoutputEPWM2A
EPwm3Regs.CMPA.half.CMPA=700;//adjustdutyforoutputEPWM3A
*/
}
voidInitEPwm2Example（）
{
//SetupTBCLK
EPwm2Regs.TBPRD=TPRD;//TPRD=800,Period=1600TBCLKcounts
EPwm2Regs.TBPHS.half.TBPHS=0;//SetPhaseregistertozero
EPwm2Regs.TBCTR=0x0000;//Clearcounter
//Setupcountermode
EPwm2Regs.TBCTL.bit.CTRMODE=TB_COUNT_UPDOWN;//Symmetricalmode
EPwm2Regs.TBCTL.bit.PHSEN=TB_ENABLE;//////////////////////////////Slavemodule
EPwm2Regs.TBCTL.bit.PRDLD=TB_SHADOW;
EPwm2Regs.TBCTL.bit.SYNCOSEL=TB_SYNC_IN;///////////////////////////syncflow-through
//SetupTpwm
EPwm2Regs.TBCTL.bit.HSPCLKDIV=TB_DIV2;//ClockratiotoSYSCLKOUT
EPwm2Regs.TBCTL.bit.CLKDIV=5;//ForUpandDownCount--Tpwm=2xTBPRDxTTBCLK;Fpwm=1/（Tpwm）
//Setupshadowing
EPwm2Regs.CMPCTL.bit.SHDWAMODE=CC_SHADOW;
EPwm2Regs.CMPCTL.bit.SHDWBMODE=CC_SHADOW;
EPwm2Regs.CMPCTL.bit.LOADAMODE=CC_CTR_ZERO;//loadonCTR=Zero
EPwm2Regs.CMPCTL.bit.LOADBMODE=CC_CTR_ZERO;//loadonCTR=Zero
//Setactions
EPwm2Regs.AQCTLA.bit.CAU=AQ_SET;//setactionsforEPWM2A
EPwm2Regs.AQCTLA.bit.CAD=AQ_CLEAR;
//SetDead-band
EPwm2Regs.DBCTL.bit.OUT_MODE=DB_FULL_ENABLE;//enableDead-bandmodule
EPwm2Regs.DBCTL.bit.POLSEL=DB_ACTV_HIC;//ActiveHicomplementary
EPwm2Regs.DBFED=50;//FED=50TBCLKs
EPwm2Regs.DBRED=50;//RED=50TBCLKs
//InterruptwherewewillchangetheCompareValues
EPwm2Regs.ETSEL.bit.INTSEL=ET_CTR_ZERO;//SelectINTonZeroevent
EPwm2Regs.ETSEL.bit.INTEN=1;//EnableINT
EPwm2Regs.ETPS.bit.INTPRD=ET_3RD;//GenerateINTon3rdevent
//SetComparevalues
}
voidInitEPwm3Example（）
{
//SetupTBCLK
EPwm3Regs.TBPRD=TPRD;//TPRD=800,Period=1600TBCLKcounts
EPwm3Regs.TBPHS.half.TBPHS=0;//SetPhaseregistertozero
EPwm1Regs.TBCTR=0x0000;//Clearcounter
//Setupcountermode
EPwm3Regs.TBCTL.bit.CTRMODE=TB_COUNT_UPDOWN;//Symmetricalmode
EPwm3Regs.TBCTL.bit.PHSEN=TB_ENABLE;////////////////////////////////Slavemodule
EPwm3Regs.TBCTL.bit.PRDLD=TB_SHADOW;
EPwm3Regs.TBCTL.bit.SYNCOSEL=TB_SYNC_IN;//////////////////////////////syncflow-through
//SetupTpwm
EPwm3Regs.TBCTL.bit.HSPCLKDIV=TB_DIV2;//ClockratiotoSYSCLKOUT
EPwm3Regs.TBCTL.bit.CLKDIV=5;//ForUpandDownCount:
Tpwm=2xTBPRDxTTBCLK;Fpwm=1/（Tpwm）
//Setupshadowing
EPwm3Regs.CMPCTL.bit.SHDWAMODE=CC_SHADOW;
EPwm3Regs.CMPCTL.bit.SHDWBMODE=CC_SHADOW;
EPwm3Regs.CMPCTL.bit.LOADAMODE=CC_CTR_ZERO;//loadonCTR=Zero
EPwm3Regs.CMPCTL.bit.LOADBMODE=CC_CTR_ZERO;//loadonCTR=Zero
//Setactions
EPwm3Regs.AQCTLA.bit.CAU=AQ_SET;//setactionsforEPWM3A
EPwm3Regs.AQCTLA.bit.CAD=AQ_CLEAR;
//SetDead-band
EPwm3Regs.DBCTL.bit.OUT_MODE=DB_FULL_ENABLE;//enableDead-bandmodule
EPwm3Regs.DBCTL.bit.POLSEL=DB_ACTV_HIC;//ActiveHicomplementary
EPwm3Regs.DBFED=50;//FED=50TBCLKs
EPwm3Regs.DBRED=50;//RED=50TBCLKs
//InterruptwherewewillchangetheCompareValues
EPwm3Regs.ETSEL.bit.INTSEL=ET_CTR_ZERO;//SelectINTonZeroevent
EPwm3Regs.ETSEL.bit.INTEN=1;//EnableINT
EPwm3Regs.ETPS.bit.INTPRD=ET_3RD;//GenerateINTon3rdevent
//SetComparevalues
}
voidsvpwmGen（
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