#MA #PIC 16x2 LCD Interfacing with PIC18F4520

 

#include <P18f4520.h>

#pragma config OSC=HS

#pragma config PWRT=OFF

#pragma config WDT=OFF

#pragma config DEBUG=OFF, LVP=OFF

 unsigned char text1[] = {" First Line "};

 unsigned char text2[] = {"  Second Line "};

void delay(unsigned int value);

void lcdcmd(unsigned char value);

void lcddata(unsigned char value);

void lcdinit(void);

void lcddisplay(int row,unsigned char *str);

#define ldata PORTD

#define rs PORTBbits.RB3

#define rw PORTBbits.RB4

#define en PORTBbits.RB5

void main()

{

TRISD = 0x00;

TRISB=0x00;

ADCON1=0x0F;

lcdinit();

lcddisplay(1,text1);

lcddisplay(2,text2);

while(1);

}

void lcddisplay(int row,unsigned char *str)

{

int k;

if (row==1)

lcdcmd(0x80);

else lcdcmd(0xC0);

for(k=0;k<16;k++)

{

if(str[k] !=0)

lcddata(str[k]);

else  break;

}

while((k<16)){

lcddata('     ');

k++;

}

}

void delay(unsigned int value)

{

int i,j;

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

for(j=0;j<=50;j++);

}

 void lcdcmd (unsigned char value)

{

ldata=value;

rs=0;

rw=0;

en=1;

delay(1);

en=0;

}

 void lcddata (unsigned char value)

{

ldata=value;

rs=1;

rw=0;

en=1;

delay(1);

en=0;

}

void lcdinit(void)

{

lcdcmd(0x38);

delay(1);

lcdcmd(0x0E);

delay(1);

lcdcmd(0x01);

delay(1);

lcdcmd(0x06);

delay(1);

}