1602.c

MCS51单片机实现LCD1602显示汉字

#include<reg52.h>
#define uchar unsigned char 
#define uint unsigned int
sbit lcdrs=P1^0;
sbit lcden=P1^2;
sbit lcdwr=P1^1;
uchar CGCODE[]={0x08,0x0F,0x12,0x0F,0x0A,0x1F,0x02,0x02,//"年"代码 0x00
			0x0F,0x09,0x0F,0x09,0x0F,0x09,0x13,0x00,//"月"代码	0x01
			0x0F,0x09,0x09,0x0F,0x09,0x09,0x0F,0x00,//"日"代码  0x02
			0x07,0x04,0x07,0x04,0x07,0x00,0x04,0x07,//"星"左上半部分代码 0x03
			0x1F,0x01,0x1F,0x01,0x1F,0x08,0x08,0x1F,//"星"右上半部分代码 0x04
			0x08,0x17,0x00,0x1F,0x00,0x00,0x00,0x00,//"星"左下半部分代码 0x05
			0x08,0x1F,0x08,0x1F,0x00,0x00,0x00,0x00//"星"右下半部分代码 0x06		
			};
uchar tab[]={'0','8',0x00,'0','3',0x01,'0','9',0x02};//显示"08年03月09日"
void delay(uint t)
{
	uint x,y;
	for(x=0;x<t;x++)
		for(y=0;y<110;y++);
}
void write_com(uchar com)//向1602写指令
{
	lcdrs=0;
	P2=com;
	delay(5);
	lcden=1;
	delay(5);
	lcden=0;
}
void write_date(uchar dat)//向1602写数据
{
	lcdrs=1;
	P2=dat;
	delay(5);
	lcden=1;
	delay(5);
	lcden=0;
}
void init()//程序初始化
{
	lcdwr=0;
	lcden=0;	
	write_com(0x38);
	write_com(0x0c);
	write_com(0x06);
	write_com(0x01);
}
void main()//主函数
{
	int i;
	init();
	lcdrs=0;
	lcdwr=0;
	write_com(0x40);//将自定义字符写入CGRAM
	for(i=0;i<56;i++)//循环56次写入
	{
		write_date(CGCODE[i]);			
	}
	write_com(0x80);//写入初始地址
	for(i=0;i<9;i++)
	{
		write_date(tab[i]);
	}	
	write_com(0x80+9);//用09H和0AH显示"星"上部分
	write_date(0x03);
	write_date(0x04);
	write_com(0x80+0x40+9);//用49H和4AH显示"星"上部分
	write_date(0x05);
	write_date(0x06);
	while(1);	
}