基于AT89C52实现智能温控器

Proteus仿真

#include
#include
sbit RS = P3^6;
sbit LCDEN = P3^7;
sbit ds = P1^7;
sbit IN1=P2^0;
sbit IN2=P2^1;
sbit ENA=P2^4;
sbit led=P1^6;
sbit P1_0=P1^0;
float T,TS=5;
typedef unsigned int uint;
typedef unsigned char uchar;
unsigned char sec,Min; //定义秒分
unsigned int T0Count,KeyNum;
unsigned char Counter,Compare,Line,Column;
char*String;
uint num,z;

//延时函数
void delayMs(uint a)
{
uint i, j;
for(i = a; i > 0; i–)
for(j = 110; j > 0; j–);
}

//LCD1602写指令函数
void writeComm(uchar comm)
{
RS = 0;
P0 = comm;
delayMs(5);
LCDEN = 1;
delayMs(5);
LCDEN = 0;
delayMs(5);

}

//LCD1602写数据函数
void writeData(uchar dat)
{
RS = 1;
P0 = dat;
delayMs(5);
LCDEN = 1;
delayMs(5);
LCDEN = 0;
delayMs(5);

}

//LCD1602行列位置函数
void LCD_SetCursor(unsigned char Line,unsigned char Column)
{
if(Line1)
{
writeComm(0x80|(Column-1));
}
else if(Line2)
{
writeComm(0x80|(Column-1+0x40));
}
}

//LCD1602显示字符函数
void LCD_ShowChar(unsigned char Line,unsigned char Column,char Char)
{
LCD_SetCursor(Line,Column);
writeData(Char);
}

//LCD1602显示函数
void LCD_ShowString(unsigned char Line,unsigned char Column,char *String)
{
unsigned char i;
LCD_SetCursor(Line,Column);
for(i=0;String[i]!=’\0’;i++)
{
writeData(String[i]);
}
}

int LCD_Pow(int X,int Y)
{
unsigned char i;
int Result=1;
for(i=0;i {
Result*=X;
}
return Result;
}

//LCD1602显示表达式数字函数
void LCD_ShowNum(unsigned char Line,unsigned char Column,unsigned int Number,unsigned char Length)
{
unsigned char i;
LCD_SetCursor(Line,Column);
for(i=Length;i>0;i–)
{
writeData(Number/LCD_Pow(10,i-1)%10+‘0’);
}
}

//LCD1602初始化
void init()
{
writeComm(0x38);
writeComm(0x0c);
writeComm(0x06);
writeComm(0x01);
}

//DS18B20初始化函数
void dsInit()
{

uint i;  
ds = 0;
i = 103;  
 while(i>0) 
		 i--;
ds = 1;   
i = 4;
 while(i>0) 
		 i--;

}

//读一位数据函数
bit tempreadBit()
{
uint i;
bit dat;
ds = 0;
i++;
ds = 1;
i++;
i++;
dat = ds;
i = 8;
while(i>0) i–;
return dat;
}

//读1字节
unsigned char tempreadByte()
{
unsigned int i;
unsigned char j, dat;
dat = 0;
for(i=0; i<8; i++)
{
j = tempreadBit();

    dat = (j << 7) | (dat >> 1);
}
return dat;

}

//写1字节
void tempwriteByte(uchar dat)
{
unsigned int i;
unsigned char j;
bit b;
for(j = 0; j < 8; j++)
{
b = dat & 0x01;
dat >>= 1;

    if(b)   
    {
       ds = 0;
				i++; 
				i++;  
        ds = 1;    
        i = 8; 
				while(i>0) 
					i--;  
    }
    else  
    {
        ds = 0;
      i = 8; 
				while(i>0) 
					i--;  
        ds = 1;
       i++; 
				i++;
    }

}
}

//获取温度并转换
void tempchange()
{
dsInit();

delayMs(1);    
tempwriteByte(0xcc);
tempwriteByte(0x44);

}

//读取寄存器中存储的温度数据
int getTemp()
{
unsigned int temp;

int t;
unsigned char a ,b;
 dsInit();
delayMs(1);
tempwriteByte(0xcc);
tempwriteByte(0xbe); 
a = tempreadByte(); 
b = tempreadByte();  
t=(b<<8)+a;
if((t&0xf800)==0xf800)
{
	t=(~t)+1;
}
else
{ 
	temp=t*0.0625;
}
return temp ;

}

//计时器T0中断初始化
void Timer0Init()
{
TMOD|=0X01;

TH0=0XFC;	
TL0=0X18;	
ET0=1;
EA=1;
TR0=1;

}

//PWM调节转速函数
void PWM_Ctrl(void)
{
if(T {Compare=0;}
if((T-TS)>=0)
{Compare=30;}
if((T-TS)<=1&&(T-TS)>0)
{Compare=40;}
if((T-TS)<=2&&(T-TS)>1)
{Compare=50;}
if((T-TS)<=3&&(T-TS)>2)
{Compare=60;}
if((T-TS)<=4&&(T-TS)>3)
{Compare=70;}
if((T-TS)<=5&&(T-TS)>4)
{Compare=80;}
if((T-TS)<=6&&(T-TS)>5)
{Compare=90;}
if((T-TS)>6)
{Compare=100;}

}

//分秒累加函数
void Ctrl(void)
{
if((T-TS)>0)
{
if (T0Count>=590)
{
T0Count=0;
sec++;

		if(sec>=60)				
		{
			Min++;					
			sec=0;					
		}
		
		if(Min>=3)				
		{

// ENA=0;
// a=0;
Compare=0;
EA=0;
if(Counter {
IN1=1;
IN2=0;
ENA=1;
}
else
{
IN1=0;
IN2=0;
ENA=0;
}
LCD_ShowString(2,9,“Too Hot:”);
}
}
}

}

//LCD1602显示函数
void LCD_Display()
{
LCD_ShowNum(1,8,(unsigned long)(T10)%10 ,1);
LCD_ShowNum(1,13,TS,2);
LCD_ShowNum(1,5,T,2);
LCD_ShowNum(1,16,(unsigned long)(TS10)%10 ,1);
LCD_ShowNum(2,4,Min,2);
LCD_ShowNum(2,7,sec,2);
}

//显示温度正负函数
void Temp_Convert(void)
{
if(T<0)
{
LCD_ShowChar(1,4,’-’);

		T=-T;                              
	}
	else
	{
		LCD_ShowChar(1,4,'+');
	}
	if(TS<0)						   
	{
		LCD_ShowChar(1,12,'-'); 		   
		TS=-TS;							   
	}
	else
	{
		LCD_ShowChar(1,12,'+');
	}	

}

//独立按键重新启动电机函数
void Time_End(void)
{
if(P1_0==0)
{
IN1=1;
ENA=1;
IN2=0;
EA=1;
sec=0;
Min=0;
// a=1;
T0Count=0;
LCD_ShowString(2,9," ");
}
}

//主函数
void main()
{
init();
Timer0Init();
LCD_ShowString(1,1,“ET:”);
LCD_ShowString(1,9,“ST:”);
LCD_ShowString (2,1,“WT:”);
LCD_ShowString (2,6,":" );
LCD_ShowChar(1,7,’.’);
LCD_ShowChar(1,15,’.’);

	while(1)
	{		 			
 tempchange();    //获取温度并转换
		T=getTemp();    //读取温度
	Time_End();	          //独立按键控制重新启动
	Temp_Convert();     //温度正负
	Ctrl();           //分秒
	LCD_Display();	   //LCD显示
    PWM_Ctrl();		//PWM调节电机转速

}
}

//计时器T0中断函数
void Timer0_Routine() interrupt 1
{

TH0 = 0xFc;	
TL0 = 0x18;		


Counter++;   			
Counter%=100;			
T0Count++;				

if(Counter

}

欢迎分享，转载请注明来源：内存溢出

原文地址: http://outofmemory.cn/langs/584712.html