#MA PIC DC Motor Interfacing

 

#include<p18f4520.h>

#pragma config OSC=HS

#pragma config PWRT=OFF

#pragma config WDT=OFF

#pragma config DEBUG=OFF, LVP=OFF

void delay(unsigned int value);

#define IN1     PORTCbits.RC0

#define IN2     PORTCbits.RC2

#define start   PORTCbits.RC3

#define stop    PORTCbits.RC7

#define rw      PORTCbits.RC4

#define inc     PORTCbits.RC5

#define dec     PORTCbits.RC6

unsigned int i=0;

void main()

{

CCP2CON=0x0C;

PR2=155;

T2CON=0x05;

CCPR2L=0xff;

ADCON1=0x0f;

TRISCbits.TRISC0=0;

TRISCbits.TRISC1=0;

TRISCbits.TRISC2=0;

TRISCbits.TRISC3=1;

TRISCbits.TRISC4=1;

TRISCbits.TRISC5=1;

TRISCbits.TRISC6=1;

TRISCbits.TRISC7=1;

IN1=IN2=0;

while(1)

{

if(start==0 )

{

IN1=0;

IN2=1;

CCPR2L=0x4b;

i=2;

}

if((rw==0 & i==2))

{

IN1=1;

IN2=0;

CCPR2L=0x4B;

}

if(inc==0 &(CCPR2L!=0xff)& i==2)

{

CCPR2L=CCPR2L+1;

delay(10);

}

if(dec==0  &(CCPR2L!=0x00) & i==2)

{

CCPR2L=CCPR2L-1;

delay(10);

}

if(stop==0)

{

CCPR2L=0x00;

i=0;

}

}

}

void delay(unsigned int value)

{

int ii,j;

for(ii=0;ii<=value;ii++)

for(j=0;j<=900;j++);

}