high frequencysine wave inverter

// just follow the code for H- bridge inverter with pic in bult PWM controllers  for genrating sine wave  inverters

#ifndef _XTAL_FREQ

#define _XTAL_FREQ 16000000 

#define __delay_us(x) _delay((unsigned long)((x)*(_XTAL_FREQ/4000000.0)))

#define __delay_ms(x) _delay((unsigned long)((x)*(_XTAL_FREQ/4000.0)))

#endif

#include

__CONFIG(PROTECT&

        HS& //INTIO&             //internal

        OSC_8MHZ&

        WDTDIS&

        MCLRDIS&

        PWRTEN &

        BOREN &

        0x3FFF);

unsigned char sin_table[32] = {0, 25, 49, 73, 96, 118, 137,

    159, 177, 193, 208, 220, 231, 239, 245, 249, 250, 249, 245,

    239, 231, 220, 208, 193, 177, 159, 137, 118, 96, 73, 49, 25};

unsigned char index;

unsigned char soft_start_sh; //soft start shift count.

unsigned char soft_start_td; //soft start time delay.

unsigned int DUTY_CYCLE; //delay.

bit soft_start, wave_flag = 0;

void interrupt siva() {

    if (TMR2IF == 1) {

        TMR2IF = 0;

        CCPR1L = 200; //sin_table[index];

      //  ++index;

        if(index == 32)

        {  index = 0;

           wave_flag = ~wave_flag;

           if( wave_flag)  CCP1CON = 0x8D; //half bridge control

           else  CCP1CON = 0x8C; //half bridge control

        }

    }

}

void main() {

    ANSEL = 0; //Disable ADC

    CM1CON0 = 0; //Disable Comparator

    CM2CON0 = 0; //Disable Comparator

    VRCON = 0;

    PR2 = 249; //16 khz@16MHZ

    TRISC = 0x3F;

    CCP1CON = 0x00;

    ECCPAS = 0x40;

    PWM1CON = 0x94; //5ussec

    PRSEN = 1;

    CCP1CON = 0x8D; //half bridge control

     wave_flag = 0;

    __delay_ms(500);

    TMR2IF = 0;

    T2CON = 0x24; //TMR2 on, prescaler and postscaler 1:5

    while (TMR2IF == 0);

    TMR2IF = 0;

    TRISC = 0x03; //set pwm pins as o/p

    TMR2IE = 1;

    GIE = 1;

    PEIE = 1;

    RC2 = 0; 

    RC3 = 0;

    while (1) {

        if (ECCPASE) index = 0;

   }

}

PWM1A,1B,1C,1D pins form the H bridge circuit. IR2110 and IRF 740 MOS FETS are Used  for circuit. 

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