lesson4_6.c

利用8051单片机实现对1602液晶显示器驱动

#include<reg51.h>
#define uchar unsigned char
#define uint unsigned int

sbit lcden=P2^7;
sbit lcdrw=P2^6;
sbit lcdrs=P2^5;

int tt;
uchar num;

uchar code table[]="I LIKE MCU!";
uchar code table1[]="HAPPY NEW YEAR!";

void delay(uint z)
{
	uint x,y;
	for(x=z;x>0;x--)
		for(y=110;y>0;y--);
}

void write_com(uchar com)
{
	lcdrs=0;
	lcdrw=0;
	lcden=0;
	P0=com;
	delay(5);
	lcden=1;
	delay(5);
	lcden=0;
}


void write_data(uchar dat)
{
	lcdrs=1;
	lcdrw=0;
	lcden=0;
	P0=dat;
	delay(5);
	lcden=1;
	delay(5);
	lcden=0;
}

void init()
{
	write_com(0x38);
	write_com(0x0c);
	write_com(0x06);
	EA=1;
	ET0=1;
	TR0=1;
}



void display1()
{
	write_com(0x01);
	write_com(0x80);
	for(num=0;num<11;num++)
		{
			write_data(table[num]);
			delay(5);
		}
}

void display2()
{
	write_com(0x01);
	write_com(0x80);
	for(num=0;num<15;num++)
		{
			write_data(table1[num]);
			delay(5);
		}
}

void main()
{
	init();
	while(1)
	{
		display1();
		delay(5000);
		delay(5000);
		display2();
		delay(5000);
		delay(5000);
	}
}

void timer0() interrupt 1
{
	TH0=(65535-50000)/256;
	TL0=(65535-50000)%256;
	tt++;
	
	//while(1);
}