12864f.c

51单片机控制LCD（12864F）和DS18B20

#include <reg51.h>
#include <intrins.h>
#include <string.h>
#include <DS18B20.h>  
#define uchar unsigned char
#define uint unsigned int

//12864 汉字显示模块 与MCU连接

sbit RS = P3^0;// 1:输入数据 ；0:输入命令
sbit RW = P3^1;//1:读数据  0:写数据
sbit E = P3^2;
//sbit PSB = P1^1;  //串并口选择 1:并口模式; 0:串口模式;
sbit ak = P1^0;
sbit be = P3^7;
sbit br = P1^7;
sbit key= P3^3;

#define  LcdData P0

//延时子程序
void delay(unsigned int t)
{  unsigned int i,j;
   for(i=0;i<t;i++)
      for(j=0;j<10;j++);
         
}
//测试LCD忙
bit Check_Busy()
{
    bit busy;
    RS = 0;
    RW = 1;
    E = 1;
      _nop_(); 
    busy = (bit)(LcdData&0x80);
    E = 0;
    return busy;
}
//等待LCD到空闲
void wait()
{
    while(Check_Busy());
}
//写数据
void Lcd_Writedata(unsigned char dispdata)
{  wait();

   RS=1;
   RW=0;
   E=0;
   _nop_();  _nop_();
   LcdData=dispdata;
   E=1;
   _nop_(); _nop_();
   E=0;
}

//写指令代码
void Lcd_WriteCmd(unsigned char cmdcode)
{  wait();
   RS=0;
   RW=0;
 
   E=0;
   _nop_();  _nop_();
   LcdData=cmdcode;
   _nop_(); _nop_();
   E=1;
   _nop_();  _nop_();
   E=0;
}
//初始化LCD
void Lcd_Reset()
{ // PSB=1;
   Lcd_WriteCmd(0x30);       //选择基本指令集
   delay(5); 
   Lcd_WriteCmd(0x0e);       //开显示(无游标、不反白)
   delay(5);
   Lcd_WriteCmd(0x01);       //清除显示，并且设定地址指针为00H
   delay(5);
   Lcd_WriteCmd(0x06);       //指定在资料的读取及写入时，设定游标的移动方向及指定显示的移位
   
}

void WriteStr(unsigned char code *s)
{ 
    while(*s>0)
   {  Lcd_Writedata(*s);
      s++;     
   }
}

void hzDisp()
{ 
   Lcd_WriteCmd(0x80);
   WriteStr(" ");
   Lcd_WriteCmd(0x90);
   WriteStr("系统初始化。。。");
   delay(40000);
   Lcd_WriteCmd(0x90);
   WriteStr("                ");
   delay(5000);
   Lcd_WriteCmd(0x80);
   WriteStr("欢迎使用");    
   Lcd_WriteCmd(0x88);
   WriteStr("  智能家居系统");
  
}



void Main()
{  
   unsigned int a,b,c,d,tem;
   Lcd_Reset(); //初始化LCD屏
   ak=0;
   hzDisp();
   delay(40000);
   d=0;
      while(1)
   {  		  
	    tem=ReadTemperature();
 	    a=tem/100+48;
		b=tem%100/10+48;
		c=tem%10+48;
   		Lcd_Reset(); //初始化LCD屏
   		delay(5);
		Lcd_WriteCmd(0x80);       
   		WriteStr("当前室内温度：");
   		Lcd_WriteCmd(0x90);       
   		Lcd_Writedata(a);	 
   		Lcd_Writedata(b);
   		Lcd_Writedata(0x2e);
   		Lcd_Writedata(c);
   		WriteStr("度");
   		Lcd_WriteCmd(0x88);       
   		WriteStr("当前室内照度：");
   		Lcd_WriteCmd(0x98);       
   		WriteStr("偏暗");
   		delay(20000);
   
     	if(d++==10)
        	 ak=1;

	    if (key==0)
	    { d=0;
	 	  ak=0;
	 	  be=0;
	 	  delay(5000);
	      be=1;}
   }  
 
}