12864yejing.c

C51 程序练习

#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
sbit rd=P2^6;
sbit wr=P2^5;
sbit e=P2^7;
sbit psb=P3^2;
sbit reset=P3^4;

uchar table[]="人体健康20100419";

void delay(uint z)
{
	uint x,y;
	for(x=z;x>0;x--)
		for(y=110;y>0;y--);
}
void write_com(uchar com)
{
	wr=0;//写指令
	rd=0;
	delay(5);
	P0=com;
	e=1;
	delay(5);
	e=0;//以上都是根据指令表写出
	delay(5);	
}
void write_data(uchar date)//写数据
{
	wr=0;
	rd=1;
	delay(5);
	P0=date;
	e=1;
	delay(5);
	e=0;
	delay(5);
}
void init()
{
	reset=1;
	delay(100);
	write_com(0x30);
	delay(200);
	write_com(0x30);
	delay(100);
	write_com(0x0f);//设置BCD		
	delay(200);	
	write_com(0x01);//清除显示
	delay(1000);	
	write_com(0x06);
	delay(500);	//结束	
}
void display1(void)//显示字符
{
	uchar i;
	uchar a;
	a=0x10;
	write_com(0x80);//设置地址
	delay(50);
	for(i=0;i<16;i++)
	{
		write_data(a);
		delay(50);
		a++;		
	}

}
void display2(void)//显示汉字
{
	uchar i;
	uchar a,b;
	a=0xBA;
	b=0xC0;
	write_com(0x80);//设置地址

	for(i=0;i<8;i++)
	{
		write_data(a);
		write_data(b);
		delay(50);
		b++;		
	}

}
void display3(void)//直接写人
{
	uchar i;
	write_com(0x80);//第一行
	for(i=0;i<16;i++)
	{
		write_data(table[i]);

		delay(50);
		
	}

}
void main()
{
	init();
	while(1)
	{
	//	display1();
	//	display2();
		display3();
		while(1);		
	}

	
}