DAC Using PIC18F4520

Title:Dac Using PIC18F4520

Program:

//Author : Palak Patel
//Contact No:9173211683
//Title:dac
//Platform: PIC18f4520
//Software:MPLAB

#include<p18f4520.h>
#pragma config OSC = INTIO67
#pragma config FCMEN = OFF
#pragma config IESO = OFF
#pragma config PWRT = OFF
#pragma config BOREN = OFF
#pragma config WDT = OFF
#pragma config MCLRE = ON
#pragma config PBADEN = OFF
#pragma config STVREN = OFF
#pragma config LVP = OFF

#define sw0 PORTCbits.RC0
#define sw1 PORTCbits.RC1

void cmd(unsigned char);
void dat(unsigned char);
void Delay_ms(unsigned char);
void delay();

#define dac PORTD
void delay()
{
unsigned int p;
for(p=0;p<1000;p++);
}

void main()
{
unsigned int value,value1,i,Temp,x[25],j,a,b,c,d,p,e,f,g,h;
unsigned char name[]="Voltage Difference=";
TRISB=0x00;
TRISD=0x00;
TRISAbits.TRISA0=1;
TRISAbits.TRISA2=1;
TRISCbits.TRISC0=1;
TRISCbits.TRISC2=1;
ADCON=0x0F;

  cmd(0x01);                          //Clear Lcd
          cmd(0x02);                          //4 Bit Specification
          cmd(0x28);                          //4 Bit specification
          cmd(0x0c);
          cmd(0x80);                          //Cursor starting point
          cmd(0X06);
          i=0;
          while(name[i]!='\0')
          {
                     dat(name[i]);
                     i++;
          }

cmd(0xc0);

i=0x00;
dac=0x00;
while(1)
{
if(sw0 == 0)
{
delay();
delay();
if(sw0 == 0)
{
i=i+1;
dac=i;
delay();
}
}
if(sw1 == 0)
{
delay();
delay();
if(sw1 == 0)
{
i=i-1;
dac=i;
delay();
}
}
dac=i;
delay();
}
}

Simulation:

For Basic Electronics Kindaly follow this Link:

here