DSP生成正弦波的程序.txt

DSP生成正弦波的程序.txt

《DSP生成正弦波的程序.txt》由会员分享，可在线阅读，更多相关《DSP生成正弦波的程序.txt（5页珍藏版）》请在冰点文库上搜索。

//�������ڱ仯�����Ҳ�

#include"DSP2833x_Device.h"//DSP2833xHeaderfileIncludeFile

#include"DSP2833x_Examples.h"//DSP2833xExamplesIncludeFile

#include"IQmathLib.h"

#include"qmath.h"

#include"math.h"

#defineN33

#definePI3.1415925

#definePRD600

floatM=0.8;

inti;

//doublea[N];

//unsignedintn=0;

//floatQ;

#definePWM1_INT_ENABLE1

#definePWM2_INT_ENABLE1

#definePWM3_INT_ENABLE1

voidInitEPwm1Example（void）;

//voidInitEPwm2Example（void）;

//voidInitEPwm3Example（void）;

interruptvoidepwm1_timer_isr（void）;

//interruptvoidepwm2_timer_isr（void）;

//interruptvoidepwm3_timer_isr（void）;

//voidInitCmp（）;

//externUint16NN,MM;

//Uint16NN=24,MM=1;

//Uint16n=0;

Uint16cmp1[360],cmp2[360],cmp3[360];

Uint32EPwm1TimerIntCount;

Uint32EPwm2TimerIntCount;

Uint32EPwm3TimerIntCount;

voidmain（void）

{

InitSysCtrl（）;

InitEPwm1Gpio（）;

//InitEPwm2Gpio（）;

//InitEPwm3Gpio（）;

DINT;

InitPieCtrl（）;

IER=0x0000;

IFR=0x0000;

InitPieVectTable（）;

EALLOW;//ThisisneededtowritetoEALLOWprotectedregisters

PieVectTable.EPWM1_INT=&epwm1_timer_isr;

//PieVectTable.EPWM2_INT=&epwm2_timer_isr;

//PieVectTable.EPWM3_INT=&epwm3_timer_isr;

EDIS;

EALLOW;

SysCtrlRegs.PCLKCR0.bit.TBCLKSYNC=0;//StopalltheTBclocks

EDIS;

InitEPwm1Example（）;

//InitEPwm2Example（）;

//InitEPwm3Example（）;

//InitCmp（）;

EALLOW;

SysCtrlRegs.PCLKCR0.bit.TBCLKSYNC=1;

EDIS;

EPwm1TimerIntCount=0;

EPwm2TimerIntCount=0;

EPwm3TimerIntCount=0;

IER|=M_INT3;

PieCtrlRegs.PIEIER3.bit.INTx1=PWM1_INT_ENABLE;

//PieCtrlRegs.PIEIER3.bit.INTx2=PWM2_INT_ENABLE;

//PieCtrlRegs.PIEIER3.bit.INTx3=PWM3_INT_ENABLE;

EINT;//EnableGlobalinterruptINTM

ERTM;

{

asm（"NOP"）;

}

}

voidInitEPwm1Example（）

{

EPwm1Regs.TBCTL.bit.SYNCOSEL=TB_CTR_ZERO;//zhuyi

EPwm1Regs.TBPRD=PRD;//�ز�����=2*1500TBCLK

EPwm1Regs.TBPHS.half.TBPHS=0x0000;//Phaseis0

EPwm1Regs.TBCTL.bit.PRDLD=TB_SHADOW;

EPwm1Regs.TBCTR=0x0000;

EPwm1Regs.TBCTL.bit.CTRMODE=TB_COUNT_UPDOWN;//Countupdown

EPwm1Regs.TBCTL.bit.PHSEN=TB_DISABLE;//Disablephaseloading

EPwm1Regs.TBCTL.bit.HSPCLKDIV=TB_DIV2;//ClockratiotoSYSCLKOUT

EPwm1Regs.TBCTL.bit.CLKDIV=TB_DIV2;

EPwm1Regs.CMPCTL.bit.SHDWAMODE=CC_SHADOW;//LoadregisterseveryZERO_PRD

EPwm1Regs.CMPCTL.bit.SHDWBMODE=CC_SHADOW;

EPwm1Regs.CMPCTL.bit.LOADAMODE=CC_CTR_ZERO;//����

EPwm1Regs.CMPCTL.bit.LOADBMODE=CC_CTR_ZERO;

//EPwm1Regs.CMPA.half.CMPA=1000;

EPwm1Regs.AQCTLA.bit.CAU=AQ_CLEAR;//ClearPWM1AonCAU

EPwm1Regs.AQCTLA.bit.CAD=AQ_SET;

EPwm1Regs.AQCTLB.bit.CAU=AQ_SET;//SETPWM1BonCAU�������������

EPwm1Regs.AQCTLB.bit.CAD=AQ_CLEAR;

//setdeadband

//�����ж�

EPwm1Regs.ETSEL.bit.INTSEL=ET_CTR_PRD;//?

SelectINTonZeroPrdevent

EPwm1Regs.ETSEL.bit.INTEN=PWM1_INT_ENABLE;//EnableINT

EPwm1Regs.ETPS.bit.INTPRD=ET_1ST;

}

/*

voidInitCmp（）

{

//Uint16i=0;

if（i

{

cmp1[i]=（Uint16）（EPwm1Regs.TBPRD*0.25*（1+M*sin（（2*i）*PI/N）+1+M*sin（（2*i+1）*PI/N）））;

// cmp2[i]=（Uint16）（EvaRegs.T1PR*0.25*（1+M*sin（（2*i）*PI/N+PI*4/3）+1+M*sin（（2*i+1）*PI/N+PI*4/3）））;

// cmp3[i]=（Uint16）（EvaRegs.T1PR*0.25*（1+M*sin（（2*i）*PI/N+PI*2/3）+1+M*sin（（2*i+1）*PI/N+PI*2/3）））;

i++;

}

else

{i=0;}

}*/

//�Ƚ�ֵ�ǰ����Ҳ��仯��

interruptvoidepwm1_timer_isr（void）

{

if（i

{

//cmp1[i]=（Uint16）（EPwm1Regs.TBPRD*sin（（2*i）*PI/N）

cmp1[i]=（Uint16）（EPwm1Regs.TBPRD*0.25*（1+M*sin（（2*i）*PI/N）+1+M*sin（（2*i+1）*PI/N）））;

// cmp2[i]=（Uint16）（EvaRegs.T1PR*0.25*（1+M*sin（（2*i）*PI/N+PI*4/3）+1+M*sin（（2*i+1）*PI/N+PI*4/3）））;

// cmp3[i]=（Uint16）（EvaRegs.T1PR*0.25*（1+M*sin（（2*i）*PI/N+PI*2/3）+1+M*sin（（2*i+1）*PI/N+PI*2/3）））;

EPwm1Regs.CMPA.half.CMPA=cmp1[i];

i++;

}

else

{i=0;}

EPwm1Regs.ETCLR.bit.INT=1;

PieCtrlRegs.PIEACK.all=PIEACK_GROUP3;

}