main.c

自己做的单片机Proteus仿真实例

/************http://hi.baidu.com/echoas***************
程序：LCD12864自定义显示字符(最多显示4个)
内容：ASCII码显示、自带字库显示(8192个)、自定义显示字符(4个)。
软件：keil uVision4
液晶：QYLCD12864HZ1(带字库) 
作者：大海橡树 
整理日期：2010-11-28  11:00
修改：无 

备注：有什么错误的地方，欢迎网友们到空间留言

					O(∩_∩)O~

************http://hi.baidu.com/echoas*****************/
#include<AT89X52.h>
#define uchar unsigned char
#define uint  unsigned int		//定义一下，方便使用 

sbit RS=P2^5;
sbit RW=P2^6;
sbit EN=P2^7;	//液晶的三个控制端 

//sbit PSB=P2^4;//1---8位或4位并口方式；0---串口方式。单片机上电高电平，选择的是并口方式 

//繁体中文字“龍”	
uchar table[]={0x10,0x80,0x08,0x80,0x7E,0xFC,0x24,0x80,0x18,0xFC,0xFF,0x04,0x00,0xFC,0x3E,0x80,
0x22,0xF8,0x3E,0x80,0x22,0xF8,0x3E,0x80,0x22,0xFA,0x22,0x82,0x2A,0x82,0x24,0x7E}; 

//一个星星、一个月亮 
unsigned char code zk[]={0x08,0x20,0x1c,0x10,0x1c,0x1c,0xff,0x9e,0x7f,0x1e,0x1c,0x1f,0x3e,0x1f,
0x3e,0x1f, 0x77,0x1f,0x41,0x3f,0x00,0x7e,0x00,0xfe,0x83,0xfc,0x7f,0xf8,0x3f,0xf0,0x0f,0xc0, 
}; 

//小人 
uchar code table2[]={0x03,0xC0,0x04,0x20,0x04,0x20,0x03,0xC0,0x0C,0x30,0x14,0x28,0x14,0x28,0x14,0x28,
0x14,0x28,0x17,0xE8,0x04,0x20,0x04,0x20,0x04,0x20,0x04,0x20,0x0E,0x70,0x0E,0x70}; 

//喇叭 
uchar code table3[]={0x00,0x39,0x00,0x6A,0x00,0xA8,0x01,0x29,0x7E,0x2A,0xFC,0x28,0xFC,0x29,0xCC,0x2A,
0xCC,0x28,0xFC,0x29,0xFC,0x2A,0x7E,0x28,0x01,0x29,0x00,0xAA,0x00,0x68,0x00,0x38};

uchar code table4[]="LCD12864";
uchar code table5[]="自定义显示字符";
uchar code table6[]="大海橡树";

void delay(uint i)	//延时函数 
{
	while(--i);
}

void read_busy()	//读忙标志 最高位为1则busy，不能进行读写操作 
{
	RS=0;
	RW=1;
	EN=1;	//看时序 
	while(P0 & 0x80); 
	EN=0;
}

void write_LCD_command(uchar value) //写命令函数 
{
	read_busy();	//每次读写都要进行读忙标志 
	RS=0;
	RW=0;
	delay(200);
	EN=1;		//EN从1--0锁存数据 
	P0=value;
	delay(200);
	EN=0;
}

void write_LCD_data(uchar value)	//写数据函数 
{
	read_busy();
	RS=1;
	RW=0;
	delay(200);
	EN=1;		//EN从1--0锁存数据 
	P0=value;
	delay(200);
	EN=0;
}

void init_LCD()				//8位并口方式LCD1864初始化函数 
{
	delay(4000);			//等待时间>40ms 
	write_LCD_command(0x30);//功能设定：8位数据、基本指令操作 
	delay(100);				//等待时间>100us 
	write_LCD_command(0x30);//功能设定：8位数据、基本指令操作 
	delay(37);				//等待时间>37us 
	write_LCD_command(0x0C);//显示设定：整体显示、游标关、不反白 
	delay(100);				// 等待时间>100us 
	write_LCD_command(0x01);//清屏指令 
	delay(10000);			//等待时间>10ms 
	write_LCD_command(0x06);//进入点设定：地址指针加1 
}

/*=============================================
自定义汉字函数：CGRAM自定义显示字符
地址		显示编码
0x40		0x0000
0x50		0x0002
0x60		0x0004
0x70		0x0006
共可显示四个自定义字符！ 
显示自定义字符前，先要设定显示的位置，否则会乱码 
==============================================*/
void CGRAM()
{
	uchar i;
	write_LCD_command(0x30);//基本指令操作 
	write_LCD_command(0x40);//设定CGRAM字符的位置 
	for(i=0;i<16;i++)
	{
		write_LCD_data(table[i*2]);
		write_LCD_data(table[i*2+1]);//送显示数据到CGRAM区中 
	}
	write_LCD_command(0x50);
	for(i=0;i<16;i++)
	{
		write_LCD_data(zk[i*2]);
		write_LCD_data(zk[i*2+1]);
	}
	write_LCD_command(0x60);
	for(i=0;i<16;i++)
	{
		write_LCD_data(table2[i*2]);
		write_LCD_data(table2[i*2+1]);
	}

	write_LCD_command(0x70);
	for(i=0;i<16;i++)
	{
		write_LCD_data(table3[i*2]);
		write_LCD_data(table3[i*2+1]);
	}
	
}

void main()
{
	uchar num;
	init_LCD();
	
	while(1)
	{
		write_LCD_command(0x80);
		for(num=0;num<8;num++)
		{
			write_LCD_data(table6[num]);
		}
		write_LCD_command(0x84);
		for(num=0;num<8;num++)
		{
			write_LCD_data(table4[num]);
		}

		write_LCD_command(0x90);
		for(num=0;num<14;num++)
		{
			write_LCD_data(table5[num]);
		}
		
		CGRAM();
		write_LCD_command(0x98);
		write_LCD_data(0x00);
		write_LCD_data(0x00);//第一个自定义显示字符编码为：0x0000 
		
		write_LCD_command(0x99);
		write_LCD_data(0x00);
		write_LCD_data(0x02);//第一个自定义显示字符编码为：0x0002

		write_LCD_command(0x9A);
		write_LCD_data(0x00);
		write_LCD_data(0x04);//第一个自定义显示字符编码为：0x0004

		write_LCD_command(0x9B);
		write_LCD_data(0x00);
		write_LCD_data(0x06);//第一个自定义显示字符编码为：0x0006
	}
}