pic16f72 pure sine wave inverter

//----------------------------------------------------------------------------------------
//Programmer:  Syed Tahmid Mahbub
//Target Microcontroller: PIC16F877A
//Compiler: mikroC PRO for PIC (Can easily port to any other compiler)
//-----------------------------------------------------------------------------------------


unsigned char sin_table[32]={0, 25, 50, 75, 99, 121, 143, 163, 181,
198, 212, 224, 234, 242, 247, 250, 250, 247, 242, 234, 224, 212, 198,
181, 163, 143, 121, 99, 75, 50, 25,0};


unsigned int TBL_POINTER_NEW, TBL_POINTER_OLD, TBL_POINTER_SHIFT, SET_FREQ;
unsigned int TBL_temp;
unsigned char DUTY_CYCLE;

sbit MOSA at RD0_bit;
sbit MOSB at RD1_bit;
sbit MOSC at RD2_bit;
sbit MOSD at RD3_bit;

unsigned char FlagReg;
sbit Direction at FlagReg.B0;
//0 -> MOS A + D
//1 -> MOS B + C

void interrupt(){
     if (TMR2IF_bit == 1){
        TBL_POINTER_NEW = TBL_POINTER_OLD + SET_FREQ;
        if (TBL_POINTER_NEW < TBL_POINTER_OLD){
           //CCP1CON.P1M1 = ~CCP1CON.P1M1; //Reverse direction of full-bridge
           if (Direction == 0){
              MOSA = 0;
              MOSD = 0;
              MOSB = 1;
              MOSC = 1;
              Direction = 1;
           }
           else{
                MOSB = 0;
                MOSC = 0;
                MOSA = 1;
                MOSD = 1;
                Direction = 0;
           }
        }
        TBL_POINTER_SHIFT = TBL_POINTER_NEW >> 11;
        DUTY_CYCLE = TBL_POINTER_SHIFT;
        CCPR1L = sin_table[DUTY_CYCLE];
        TBL_POINTER_OLD = TBL_POINTER_NEW;
        TMR2IF_bit = 0;
     }
}

void main() {
     SET_FREQ = 410;
     PORTD = 0;
     TRISD = 0;
     PR2 = 249; // 16kHz
     CCPR1L = 0;
     CCP1CON = 12; //PWM mode
     TRISC = 0xFF;
     TMR2IF_bit = 0;
     T2CON = 0x04; //TMR2 on
     while (TMR2IF_bit == 0);
     TMR2IF_bit = 0; //Clear TMR2IF
     PORTC = 0;
     TRISC = 0;
     TMR2IE_bit = 1;
     GIE_bit = 1;
     PEIE_bit = 1;
    
     while (1);
    
}