用DSP28335实现spwm波(全桥的载波相移技术包含在内)

#include

#include

#include

//#include

#include

#define

EPWM1_TIMER_TBPRD

3750

#define

EPWM3_TIMER_TBPRD

3750

void

InitEPwm1Example(

void

);

void

InitEPwm3Example(

void

);

interrupt

void

epwm1_timer_isr(

void

);

interrupt

void

epwm3_timer_isr(

void

);

extern

Uint32 k=0;

extern

Uint32

TonC[400]={1875,1851,1828,1804,1781,1757,1734,17 10,1687,1664,1640,1617,

1594,1571 ,1548,1525,1502,1479,1457,1434,1411,1389,1367,1345 ,1323,1301,

1279,1258,1236,1215,11 94,1173,1152,1132,1111,1091,1071,1051,1032,1012,

993,974,956,937,919,901,883,865,848,831 ,814,798,782,766,750,734,719,704,

6 90,675,661,648,634,621,609,596,584,572,561,549,538 ,528,518,508,498,489,

480,472,464,45 6,448,441,435,428,422,416,411,406,402,397,393,390, 387,384,

382,380,378,377,376,375,37 5,375,376,377,378,380,382,384,387,390,393,397,

402,406,411,416,422,428,435,441,448,456 ,464,472,480,489,498,508,518,528,

538 ,549,561,572,584,596,609,621,634,648,661,675,690,7 04,719,734,750,766,

782,798,814,831 ,848,865,883,901,919,937,956,974,993,1012,1032,105 1,1071,

1091,1111,1132,1152,1173,119 4,1215,1236,1258,1279,1301,1323,1345,1367,

1389,1411,1434,1457,1479,1502,1525,1548,1571,1 594,1617,1640,1664,1687,

1710,1734,1 757,1781,1804,1828,1851,1875,1899,1922,1946,1969,1 993,2016,

2040,2063,2086,2110,2133,2 156,2179,2202,2225,2248,2271,2293,2316,2339,

2361,2383,2405,2427,2449,2471,2492,2514,25 35,2556,2577,2598,2618,2639,

2659,267 9,2699,2718,2738,2757,2776,2794,2813,2831,2849,286 7,2885,2902,

2919,2936,2952,2968,298 4,3000,3016,3031,3046,3060,3075,3089,3102,3116,

3129,3141,3154,3166,3178,3189,3201,3212 ,3222,3232,3242,3252,3261,3270,

3278,32 86,3294,3302,3309,3315,3322,3328,3334,3339,3344,33 48,3353,3357,

3360,3363,3366,3368,337 0,3372,3373,3374,3375,3375,3375,3374,3373,3372,

3370,3368,3366,3363,3360,3357,3353,3348 ,3344,3339,3334,3328,3322,3315,

3309,3 302,3294,3286,3278,3270,3261,3252,3242,3232,3222,3 212,3201,3189,

3178,3166,3154,3141,3 129,3116,3102,3089,3075,3060,3046,3031,3016,3000,

2984,2968,2952,2936,2919,2902,2885,2867 ,2849,2831,2813,2794,2776,2757,

2738, 2718,2699,2679,2659,2639,2618,2598,2577,2556,2535, 2514,2492,2471,

2449,2427,2405,2383, 2361,2339,2316,2293,2271,2248,2225,2202,2179,2156,

2133,2110,2086,2063,2040,2016,1993,1969 ,1946,1922,1899};

void

main(

void

)

{

InitSysCtrl();

InitEPwm1Gpio();

InitEPwm3Gpio();

DINT;

InitPieCtrl();

IER = 0x0000;

IFR = 0x0000;

InitPieVectTable();

EALLOW;

1_INT = &epwm1_timer_isr;

3_INT = &epwm3_timer_isr;

EDIS;

EALLOW;

YNC = 0;

EDIS;

InitEPwm1Example();

InitEPwm3Example();

EALLOW;

YNC = 1;

EDIS;

IER |= M_INT3;

1 = 1;

3 = 1;

EINT;

ERTM;

for

(;;)

{

asm

(

);

}

}

void

InitEPwm1Example()

{

= EPWM1_TIMER_TBPRD;

= 0x0000;

= 0x0000;

= 1500;

= 1500;

E = TB_COUNT_UPDOWN;

= TB_DISABLE;

DIV = TB_DIV1;

= TB_DIV1;

ODE = CC_SHADOW;

ODE = CC_SHADOW;

ODE = CC_CTR_ZERO_PRD;

ODE = CC_CTR_ZERO_PRD;

= AQ_CLEAR;

= AQ_SET;

= AQ_SET;

= AQ_CLEAR;

= ET_CTR_ZERO;

= 1;