lcd1602.c

52单片机开发板的实例程序

#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
sbit rs=P1^0;
sbit rw=P1^1;
sbit en=P1^2;
uchar code a[]="I Like AT89S52";
void delay(uint z)
{
	uint x,y;
	for(x=z;x>0;x--)
	for(y=110;y>0;y--);
}
void write1602_command(uchar command)//写指令子函数
{
   rs=0;
   rw=0;
   P2=command;
   delay(1);
   en=1;
   delay(2);
   en=0;
}
void write1602_data(uchar date)//写数据子函数
{
   rs=1;
   rw=0;
   P2=date;
   delay(1);
   en=1;
   delay(2);
   en=0;
}
void init()
{	
	en=0;
	rw=0;
	write1602_command(0x38);
	write1602_command(0x01);
	write1602_command(0x0c);
	write1602_command(0x06);
	write1602_command(0x80);
}	
void main()
{		uchar i,temp=0,ge,shi,bai;
		init();
		write1602_command(0x80);
	     for(i=0;i<14;i++)
			{
				write1602_data(a[i]);
				delay(6);
			}

	    while(1)
		{
		  bai=temp/100;
		  shi=temp%100/10;
		  ge=temp%10;
		  write1602_command(0x80+0x40+6);
		  write1602_data(0x30+bai);
		  write1602_data(0x30+shi);
		  write1602_data(0x30+ge); 
		  temp++;
		  if(temp>200)
		  temp=0;
		  delay(800);	
		}
	
}