#include <reg51.h>
#include <stdio.h>
#define lcd_port P1
int j;
unsigned char word;
sbit rs = P3^5;
sbit rw = P3^6;
sbit en = P3^7;
sbit BUT_serial = P0^0;
sbit LED_serial = P2^0;
char morning[]={“Gd morning LeeYJ!”};
void delay(unsigned int msec)
{
int i,j ;
for(i=0;i<msec;i++)
for(j=0;j<200;j++);
}
void lcdcmd(unsigned char value)
{
rs = 0;
rw = 0;
lcd_port = value;
en = 1;
delay(1);
en = 0;
}
void lcd_data(unsigned char display)
{
rs = 1;
rw = 0;
lcd_port = display;
en = 1;
delay(1);
en = 0;
}
void shift_left()
{
lcdcmd(0x18);
delay(250);
}
void lcd_mrg()
{
for (j=0; morning[j]!=’ ’;j++)
{
lcd_data(morning[j]);
delay(100);
}
}
void serial()
{
int m;
lcdcmd(0x01);
delay(150);
for(m=0; m<=15; m++)
{
while (RI == 0);
word = SBUF;
lcd_data(word);
RI = 0;
}
lcdcmd(0xC0);
for(m=0; m<=15; m++)
{
while (RI == 0);
word = SBUF;
lcd_data(word);
RI = 0;
}
}
void lcd_init()
{
lcdcmd(0x38);
delay(150);
lcdcmd(0x0E);
delay(150);
lcdcmd(0x01);
delay(150);
lcdcmd(0x06);
delay(150);
lcdcmd(0x80);
delay(150);
}
void main(void)
{
lcd_init();
lcd_mrg();
shift_left();
TMOD = 0x20;
TH1 = 0xFD;
SCON = 0x50;
TR1 = 1;
while(1)
{
if(!BUT_serial)
{
LED_serial = 0;
serial();
if (RI == 0)
{
shift_left();
}
}
else
{
shift_left();
}
}
}
This is my code. Your help will be much appreciated.