lcddis.c

通过了硬件调试

//////////ds18b20/////////
#include <reg51.h> 
#include <INTRINS.h> 
unsigned char readdata[2];   
sbit DQ=P3^3; 
////////////end of ds18b20 variable///////
/////////////lcd variable/////////////////
#include <reg51.h>
#include <absacc.h>

#define REG0   XBYTE[0x0000]
#define REG1   XBYTE[0x0001]
#define REG2   XBYTE[0x0002]
#define REG3   XBYTE[0x0003]

unsigned char bdata busyflag;
unsigned char dat,datn,count;

unsigned char word1[16]={" T= "};
code unsigned char word2[16]={"  by LiXueli "};
code unsigned char word3[16]={"www.bitc.edu.cn!"};
code unsigned char word4[16]={"[e-mail]!"};
code unsigned char  word5[16]={"  Wellcome To "};
code unsigned char  word6[16]={" Proteus Tools!"};
code unsigned char  word7[16]={"This Programme "};
code unsigned char  word8[16]={"  by LiXueli "};

sbit busyflag_7=busyflag^7;
sbit p10=P1^0;
sbit p11=P1^1;
sbit p12=P1^2;
/////////////////end of lcd variable////////////
///////////////ds18b20/////////////////////
//延时函数

void delay(unsigned int i)
{
	 while(i--);
}

//初始化函数
void Init_DS18B20(void)
{
	 unsigned char x=0;
	 DQ = 1;    //DQ复位
	 delay(8);  //稍做延时
	 DQ = 0;    //单片机将DQ拉低
	 delay(80); //精确延时 大于 480us
	 DQ = 1;    //拉高总线
	 delay(14);
	 x=DQ;      //稍做延时后 如果x=0则初始化成功 x=1则初始化失败
	 delay(20);
}

//读一个字节
unsigned char ReadOneChar(void)
{
	unsigned char i=0;
	unsigned char dat = 0;
	for (i=8;i>0;i--)
	 {
	  DQ = 0; // 给脉冲信号
	  dat>>=1;
	  DQ = 1; // 给脉冲信号
	  if(DQ)
	   dat|=0x80;
	  delay(4);
	 }
	 return(dat);
}

//写一个字节
void WriteOneChar(unsigned char dat)
{
	 unsigned char i=0;
	 for (i=8; i>0; i--)
	 {
	  DQ = 0;
	  DQ = dat&0x01;
	  delay(5);
	  DQ = 1;
	  dat>>=1;
	 }
	 delay(4);
}

//读取温度
void  ReadTemperature(void)
{
	Init_DS18B20();
	WriteOneChar(0xCC); // 跳过读序号列号的操作
	WriteOneChar(0x44); // 启动温度转换
	Init_DS18B20();
	WriteOneChar(0xCC); //跳过读序号列号的操作
	WriteOneChar(0xBE); //读取温度寄存器等（共可读9个寄存器） 前两个就是温度
	readdata[0]=ReadOneChar();
	readdata[1]=ReadOneChar();
	
}
void Tempprocess() //温度转换
{
	unsigned int t;
	float tt;
	unsigned char temp;
	if((readdata[1]&0x80)!=0)
	{
		word1[3]='-';
		t=readdata[1];
		t<<=8;
		t=t|readdata[0];
		t=t-1;
		t=~t;
		t>>=4;
		word1[4]=t/100+48;
		word1[5]=((t/10)%10)+48;
		word1[6]=t%10+48;
		temp=readdata[0];
		temp=temp-1;
		temp=~temp;
		temp=temp&0x0f;
		tt=temp*0.0625;
		word1[7]='.';
		word1[8]=(unsigned char )(tt*10);
		word1[9]=(unsigned char )(tt*100-word1[8]*10);
		word1[10]=(unsigned char )(tt*1000-word1[8]*100-word1[9]*10);
		word1[11]=(unsigned char )(tt*10000-word1[8]*1000-word1[9]*100-word1[10]*10);
		word1[8]+=48;
		word1[9]+=48;
		word1[10]+=48;
		word1[11]+=48;
		word1[12]='C';

	}
	else
	{
		word1[3]='+';
		t=readdata[1];
		t<<=8;
		t=t|readdata[0];
		t>>=4;
		word1[4]=t/100+48;
		word1[5]=((t/10)%10)+48;
		word1[6]=t%10+48;
		temp=readdata[0];
		temp=temp&0x0f;
		tt=temp*0.0625;
		word1[7]='.';
		word1[8]=(unsigned char )(tt*10);
		word1[9]=(unsigned char )(tt*100-word1[8]*10);
		word1[10]=(unsigned char )(tt*1000-word1[8]*100-word1[9]*10);
		word1[11]=(unsigned char )(tt*10000-word1[8]*1000-word1[9]*100-word1[10]*10);
		word1[8]+=48;
		word1[9]+=48;
		word1[10]+=48;
		word1[11]+=48;
		word1[12]='C';
	 }
}
/////////////////////end  of ds18b20//////////////////
///////////////start  of  lcd 1602/////////////////
void busy()
{
	do
	{
		busyflag=REG1;
	}while(busyflag_7);
}

void wrc(unsigned char wcon)
{
	busy();
	REG0=wcon;
}

void wrd(unsigned char wdat)
{
	busy();
	REG2=wdat;
}

void rdd()
{
	busy();
	dat=REG3;
}

void lcdint()
{
	wrc(0x38);
	wrc(0x01);
	wrc(0x06);
	wrc(0x0c);
}
void wrn(unsigned char word[])
{
	unsigned char i;
	for(i=0;i<16;i++)
	{
		wrd(word[i]);
	}
}
//////////////end of lcd 1602///////////////////////
void main()
{
		lcdint();//初始化液晶
		wrc(0x80);
		wrn(word5);
		wrc(0xc0);
		wrn(word6);

        while(1)
		{
            //if(p10==0) //判断P1.0是否按下
			{				
				ReadTemperature();
				Tempprocess();
				wrc(0x80);
				wrn(word1);
				wrc(0xc0);
				wrn(word2);
			}
			if(p11==0)//判断P1.1是否按下
			{
				wrc(0x80);
				wrn(word3);
				wrc(0xc0);
				wrn(word4);
			}
			if(p12==0)//判断P1.2是否按下
			{
				wrc(0x80);
				wrn(word7);
				wrc(0xc0);
				wrn(word8);
			}
		}
}