main.c

用单片机驱动驱动液晶显示器

#include "reg52.h"
#include <intrins.h>
//#include "LCD1602.h"
//#include "DS1302.h"
#define uint unsigned int
#define uchar unsigned char
sbit  DS1302_CLK = P1^7;              //实时时钟时钟线引脚 
sbit  DS1302_IO  = P1^6;              //实时时钟数据线引脚 
sbit  DS1302_RST = P1^5;              //实时时钟复位线引脚
sbit  wireless_1 = P3^0;
sbit  wireless_2 = P3^1;
sbit  wireless_3 = P3^2;
sbit  wireless_4 = P3^3;
sbit  ACC0 = ACC^0;
sbit  ACC7 = ACC^7;
char hide_sec,hide_min,hide_hour,hide_day,hide_week,hide_month,hide_year;  //秒,分,时到日,月,年位闪的计数
sbit Set = P2^0;       //模式切换键
sbit Up = P2^1;        //加法按钮
sbit Down = P2^2;      //减法按钮
sbit out = P2^3;       //立刻跳出调整模式按钮
sbit DQ = P1^0;        //温度传送数据IO口
char done,count,temp,flag,up_flag,down_flag;
uchar temp_value;      //温度值
uchar TempBuffer[5],week_value[2];



/***********1602液晶显示部分子程序****************/


//Port Definitions**********************************************************
sbit LcdRs		= P2^5;
sbit LcdRw		= P2^6;
sbit LcdEn  	= P2^7;
sfr  DBPort 	= 0x80;		//P0=0x80,P1=0x90,P2=0xA0,P3=0xB0.数据端口

//内部等待函数**************************************************************************
unsigned char LCD_Wait(void)
{
	LcdRs=0;
	LcdRw=1;	_nop_();
	LcdEn=1;	_nop_();
						 
	LcdEn=0;
	return DBPort;		
}
//向LCD写入命令或数据************************************************************
#define LCD_COMMAND			0      // Command
#define LCD_DATA			1      // Data
#define LCD_CLEAR_SCREEN	0x01      // 清屏
#define LCD_HOMING  		0x02      // 光标返回原点
void LCD_Write(bit style, unsigned char input)
{
	LcdEn=0;
	LcdRs=style;
	LcdRw=0;		_nop_();
	DBPort=input;	_nop_();//注意顺序
	LcdEn=1;		_nop_();//注意顺序
	LcdEn=0;		_nop_();
	LCD_Wait();	
}

//设置显示模式************************************************************
#define LCD_SHOW			0x04    //显示开
#define LCD_HIDE			0x00    //显示关	  

#define LCD_CURSOR			0x02 	//显示光标
#define LCD_NO_CURSOR		0x00    //无光标		     

#define LCD_FLASH			0x01    //光标闪动
#define LCD_NO_FLASH		0x00    //光标不闪动

void LCD_SetDisplay(unsigned char DisplayMode)
{
	LCD_Write(LCD_COMMAND, 0x08|DisplayMode);	
}

//设置输入模式************************************************************
#define LCD_AC_UP			0x02
#define LCD_AC_DOWN			0x00      // default

#define LCD_MOVE			0x01      // 画面可平移
#define LCD_NO_MOVE			0x00      //default

void LCD_SetInput(unsigned char InputMode)
{
	LCD_Write(LCD_COMMAND, 0x04|InputMode);
}

//初始化LCD************************************************************
void LCD_Initial()
{
	LcdEn=0;
	LCD_Write(LCD_COMMAND,0x38);           //8位数据端口,2行显示,5*7点阵
	LCD_Write(LCD_COMMAND,0x38);
	LCD_SetDisplay(LCD_SHOW|LCD_NO_CURSOR);    //开启显示, 无光标
	LCD_Write(LCD_COMMAND,LCD_CLEAR_SCREEN);   //清屏
	LCD_SetInput(LCD_AC_UP|LCD_NO_MOVE);       //AC递增, 画面不动
}

//液晶字符输入的位置************************
void GotoXY(unsigned char x, unsigned char y)
{
	if(y==0)
		LCD_Write(LCD_COMMAND,0x80|x);
	if(y==1)
		LCD_Write(LCD_COMMAND,0x80|(x-0x40));
}

//将字符输出到液晶显示
void Print(unsigned char *str)
{
	while(*str!='\0')
	{
		LCD_Write(LCD_DATA,*str);
		str++;
	}
}

void Delay1ms(unsigned int count)
{
	unsigned int i,j;
	for(i=0;i<count;i++)
	for(j=0;j<120;j++);
}

/*延时子程序*/
void mdelay(uint delay)
{	uint i;
 	for(;delay>0;delay--)
   		{for(i=0;i<62;i++) //1ms延时.
       		{;}
   		}
}







main()
{
  Set=1;
  LCD_Initial();    //液晶初始化
  while(1)
  {
  	
	if(Set==1)
	{
	 GotoXY(0,0);                  //液晶字符显示位置
     Print("hello wolf");
	}
	else{
	GotoXY(0,1);
	Print("hello dong");
	}
    Print("hello wolf");
    Delay1ms(400);                 //扫描延时
	}


}