SPWM with PIC16F1827 in Mikroc

[jean12]

Hello everybody,is it possible that anyone can help me to adjust the codes on Tahmid blog https://tahmidmc.blogspot.com/2012/10/generation-of-sine-wave-using-spwm-in_10.html?showComment=1380559346024#c3919127146444511070so I can replace the PIC16F684 he used with the PIC16F1827 I have.
Another problem is that few months ago I did with PIC16F876A which I don't have now then I can't control the MOSFET H-Bridge with the simple transistors on the output of the PIC so I decided to replace those transistors with MOSFET Drive HV400IP ;can anyone suggest any other thing I can do so I can control by H_Bridge?

Here below are the codes I tried to modify but I am doubting on the configuration of PORTB for output where Tahmid was using PORTC .

Consider the codes:

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

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
        }
        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;
     TBL_POINTER_SHIFT = 0;
     TBL_POINTER_NEW = 0;
     TBL_POINTER_OLD = 0;
     DUTY_CYCLE = 0;
     //ANSEL = 0; //Disable ADC        commenetd myself
    // CMCON0 = 7; //Disable Comparator      commenetd myself
     //PR2 = 249;
     PR2=187; ///for 16Khz at 12MHZ of quartz
     // TRISC = 0x3F;         commenetd myself
     TRISB=0x3F;//defined myself for PWM output pins
     CCP1CON = 0x4C;
     TMR2IF_bit = 0;
     T2CON = 4; //TMR2 on, prescaler and postscaler 1:1
     while (TMR2IF_bit == 0);
     TMR2IF_bit = 0;
     TRISB=0; //defined my self for PWM out
    // TRISC = 0;               commenetd myself the PIC doesn't have portc
     TMR2IE_bit = 1;
     GIE_bit = 1;
     PEIE_bit = 1;

     while(1);
}

Please help.

Thanks.!!

 

[Ogu Reginald]

For the driver, check TC527 MOSFET driver or IRF2110.

 

[jean12]

Hello,That HV400IP can not be used??

 

[Ogu Reginald]

The HV400IP is a driver and it can be used. While I mentioned the two earlier is because I am familiar with them and they are readily available in the market here. Moreso, the TC527 is TTL/CMOS compatible at the its input.

 

[jean12]

so,are you familiar with SPMW so you can help me to correct the codes I posted in order to get SPMW signal with 16f1827?

Thanks.