Microcontroller Projects

interfacing-24x2-lcd-with-microcontroller.c

#include<reg52.h>
sbit rs=P3^5;
sbit rw=P3^6;
sbit en=P3^7;

void delay()
{
unsigned int i,j;
for(i=0;i<700;i++)
for(j=0;j<10;j++);
}

void command(unsigned int comand) // Writing commands to lcd
{
P1=comand;	rw=0;	rs=0;	en=0;
delay();
en=1;
delay();
en=0;
}
void lcddata(char value)         //Writing data to lcd
{
P1=value;	rw=0;	rs=1;	en=0;
delay();
en=1;
delay();
en=0;
}

void lcd()  //Function to initialize lcd
{
P1=0x00;  //Port-1 as Output
P3=0x00;  //Port-3 as Output
delay();	command(0x30);	delay();	command(0x30);	delay();	command(0x30);
delay();	command(0x38);	delay();	command(0x01);	delay();	command(0x0F);
delay();	command(0x0C);	delay();	command(0x80);	delay();
}

void main()
{
char a,b,c,d;
unsigned int i;
lcd();
while(1){
c=0x80;d=0xC0;  //Lcd Commands
a='A';b='a';
i=0;
command(0x01);  //Clear lcd Command
while(i!=24){
command(c);
lcddata(a);    //Displaying upper case letters
a++;
c++;
command(d);
lcddata(b);   //Displaying lower case letters 
b++;
d++;
i++;
}
}