#include<reg51.h>
#define port P3 //14,13,12,11 pins of lcd and 1.7,1.6,1.5,1.4 of controller
#define lcdport P1
sbit rs = port^0;
sbit rw = port^1;
sbit en = port^2;
void lcd_ini();
void dis_cmd(unsigned char);
void dis_data(unsigned char);
void lcdcmd(unsigned char);
void lcddata(unsigned char);
void Delay_ms(unsigned int msec) ;
void main()
{
unsigned char data0[]=”rocks”;
unsigned int i=0;
lcdport=0;
lcd_ini();
while(data0!=’ ’)
{
dis_data(data0);
Delay_ms(20);
i++;
}
}
void lcd_ini()
{
dis_cmd(0x02);
dis_cmd(0x28);
dis_cmd(0x0C);
dis_cmd(0x06);
dis_cmd(0x80);
}
void dis_cmd(unsigned char cmd_value)
{
unsigned char cmd_value1;
cmd_value1 = (cmd_value & 0xF0);
lcdcmd(cmd_value1);
cmd_value1 = ((cmd_value<<4) & 0xF0);
lcdcmd(cmd_value1);
}
void dis_data(unsigned char data_value)
{
unsigned char data_value1;
data_value1=(data_value&0xF0);
lcddata(data_value1);
data_value1=((data_value<<4)&0xF0);
lcddata(data_value1);
}
void lcdcmd(unsigned char cmdout)
{
lcdport=cmdout;
rs=0;
rw=0;
en=1;
Delay_ms(10);
en=0;
}
void lcddata(unsigned char dataout)
{
lcdport=dataout;
rs=1;
rw=0;
en=1;
Delay_ms(10);
en=0;
}
void Delay_ms(unsigned int msec)
{
int i,j ;
for(i=0;i<msec;i++)
for(j=0;j<1100;j++);
}