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#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
sbit lcdrs=P2^6;
sbit lcdrw=P2^5;
sbit lcden=P2^7;
sbit led0=P0^0;
sbit led1=P0^1;
sbit led2=P0^2;
sbit led3=P0^3;
sbit speak=P2^4;
uchar code t0[]="T1: T2: ";
uchar code t1[]="T3: T4: ";
uchar code digital[]="0123456789";
uint data a[10]={0xff,0,0,0,0,0,0,0,0,0xfb}; //發(fā)送的數(shù)據(jù) ，分別以0xff和0xfb作為起始位和停止位，用于校驗(yàn)
sbit DS0=P2^0;
sbit DS1=P2^1;
sbit DS2=P2^2;
sbit DS3=P2^3;
unsigned int flag;//是否報(bào)警標(biāo)志
uchar i;
void delay(uchar z)//延時(shí)
{ uchar x,y;
for(x=1000;x>1;x--)
for(y=z;y>1;y--);
}
void delay_50us(uint t)// 延時(shí)50us
{
uchar j;
for(;t>0;t--)
for(j=19;j>0;j--);
}
void delay_50ms(uint t)//延時(shí)50ms
{
uint j;
for(;t>0;t--)
for(j=6245;j>0;j--);
}
/***LCD1602相關(guān)程序*******************************/
void write_com(uchar com)
{
lcdrs=0;
P1=com;
delay(5);
lcden=1;
delay(5);
lcden=0;
}
void write_date(uchar date)
{
lcdrs=1;
P1=date;
delay(5);
lcden=1;
delay(5);
lcden=0;
}
void init_lcd()
{
lcden=0;
lcdrw=0;
write_com(0x0f);
write_com(0x38);
write_com(0x01);
write_com(0x0c);
write_com(0x06);
write_com(0x06);
write_com(0x80);
for(i=0;i<16;i++)
{write_date(t0[i]);
delay(0);
}
write_com(0x80+0x40);
for(i=0;i<16;i++)
{write_date(t1[i]);
delay(0);
}}
void tmpDelay(int num)
{ while(num--) ;
}
/**************DS18B20初始化及數(shù)據(jù)處理程序******************/
void Init_DS018B200() //第一塊DS18B20初始化
{ unsigned char x=0;
DS0 = 1;
tmpDelay(8);
DS0 = 0;
tmpDelay(80);
DS0 = 1;
tmpDelay(14);
x=DS0;
tmpDelay(20);
}
unsigned char ReadOneChar0()
{ unsigned char i=0;
unsigned char dat = 0;
for (i=8;i>0;i--) { DS0 = 0;
dat>>=1;
DS0 = 1;
if(DS0)
dat|=0x80;
tmpDelay(4);
}
return(dat);
}
void WriteOneChar0(unsigned char dat)
{ unsigned char i=0;
for (i=8; i>0; i--) { DS0 = 0;
DS0 = dat&0x01;
tmpDelay(5);
DS0 = 1;
dat>>=1;
} }
unsigned int Readtemp0() //第一個(gè)溫度點(diǎn)溫度數(shù)據(jù)處理
{unsigned char a=0;
unsigned char b=0;
unsigned int t=0;
float tt=0;
Init_DS018B200();
WriteOneChar0(0xCC);
WriteOneChar0(0x44);
Init_DS018B200();
WriteOneChar0(0xCC);
WriteOneChar0(0xBE);
a=ReadOneChar0();
b=ReadOneChar0();
t=b;
t<<=8;
t=t|a;
tt=t*0.0625;
t= tt*10;
return(t);
}
void Init_DS118B201() //第二塊DS18B20初始化
{ unsigned char x=0;
DS1 = 1;
tmpDelay(8);
DS1 = 0;
tmpDelay(80);
DS1 = 1;
tmpDelay(14);
x=DS1;
tmpDelay(20);
}
unsigned char ReadOneChar1()
{ unsigned char i=0;
unsigned char dat = 0;
for (i=8;i>0;i--) { DS1 = 0;
dat>>=1;
DS1 = 1;
if(DS1)
dat|=0x80;
tmpDelay(4);
}
return(dat);
}
void WriteOneChar1(unsigned char dat)
{ unsigned char i=0;
for (i=8; i>0; i--) { DS1 = 0;
DS1 = dat&0x01;
tmpDelay(5);
DS1 = 1;
dat>>=1;
} }
unsigned int Readtemp1() //第二個(gè)溫度點(diǎn)溫度數(shù)據(jù)處理
{unsigned char a=0;
unsigned char b=0;
unsigned int t=0;
float tt=0;
Init_DS118B201();
WriteOneChar1(0xCC);
WriteOneChar1(0x44);
Init_DS118B201();
WriteOneChar1(0xCC);
WriteOneChar1(0xBE);
a=ReadOneChar1();
b=ReadOneChar1();
t=b;
t<<=8;
t=t|a;
tt=t*0.0625;
t= tt*10;
return(t);
}
void Init_DS218B202() //第三塊DS18B20初始化
{ unsigned char x=0;
DS2 = 1;
tmpDelay(8);
DS2 = 0;
tmpDelay(80);
DS2 = 1;
tmpDelay(14);
x=DS2;
tmpDelay(20);
}
unsigned char ReadOneChar2()
{ unsigned char i=0;
unsigned char dat = 0;
for (i=8;i>0;i--) { DS2 = 0;
dat>>=1;
DS2 = 1;
if(DS2)
dat|=0x80;
tmpDelay(4);
}
return(dat);
}
void WriteOneChar2(unsigned char dat)
{ unsigned char i=0;
for (i=8; i>0; i--) { DS2 = 0;
DS2 = dat&0x01;
tmpDelay(5);
DS2 = 1;
dat>>=1;
} }
unsigned int Readtemp2() //第三個(gè)溫度點(diǎn)溫度數(shù)據(jù)處理
{unsigned char a=0;
unsigned char b=0;
unsigned int t=0;
float tt=0;
Init_DS218B202();
WriteOneChar2(0xCC);
WriteOneChar2(0x44);
Init_DS218B202();
WriteOneChar2(0xCC);
WriteOneChar2(0xBE);
a=ReadOneChar2();
b=ReadOneChar2();
t=b;
t<<=8;
t=t|a;
tt=t*0.0625;
t= tt*10;
return(t);
}
void Init_DS318B203()//第四塊DS18B20初始化
{ unsigned char x=0;
DS3 = 1;
tmpDelay(8);
DS3 = 0;
tmpDelay(80);
DS3 = 1;
tmpDelay(14);
x=DS3;
tmpDelay(20);
}
unsigned char ReadOneChar3()
{ unsigned char i=0;
unsigned char dat = 0;
for (i=8;i>0;i--) { DS3 = 0;
dat>>=1;
DS3 = 1;
if(DS3)
dat|=0x80;
tmpDelay(4);
}
return(dat);
}
void WriteOneChar3(unsigned char dat)
{ unsigned char i=0;
for (i=8; i>0; i--) { DS3 = 0;
DS3 = dat&0x01;
tmpDelay(5);
DS3 = 1;
dat>>=1;
} }
unsigned int Readtemp3()//第四個(gè)溫度點(diǎn)溫度數(shù)據(jù)處理
{unsigned char a=0;
unsigned char b=0;
unsigned int t=0;
float tt=0;
Init_DS318B203();
WriteOneChar3(0xCC);
WriteOneChar3(0x44);
Init_DS318B203();
WriteOneChar3(0xCC);
WriteOneChar3(0xBE);
a=ReadOneChar3();
b=ReadOneChar3();
t=b;
t<<=8;
t=t|a;
tt=t*0.0625;
t= tt*10;
return(t);
}
/*****************************************************/
/***********************LCD1602顯示程序*********************/
void display(unsigned int pt) //LCD1602顯示程序
{ unsigned int m;
m=pt;
if (m==0){
uint num0;
uint shi0,ge0,xiaoshu0;
num0=Readtemp0();
shi0=num0/100;
ge0=num0/10%10;
xiaoshu0=num0%10;
a[1]=num0/10;//第一個(gè)溫度數(shù)據(jù)整數(shù)部分保存到待發(fā)送的數(shù)組中
a[2]=xiaoshu0;//第一個(gè)溫度數(shù)據(jù)小數(shù)部分保存到待發(fā)送的數(shù)組中
write_com(0x80+3);
write_date(digital[shi0]);
write_com(0x80+4);
write_date(digital[ge0]);
write_com(0x80+5);
write_date(0x2e);
write_com(0x80+6);
write_date(digital[xiaoshu0]);
if(shi0<2||shi0>8){led0=0;
flag=1;}
else{led0=1;}
}
else if(m==1){
uint num1;
uint shi1,ge1,xiaoshu1;
num1=Readtemp1();
shi1=num1/100;
ge1=num1/10%10;
xiaoshu1=num1%10;
a[3]=num1/10;//第二個(gè)溫度數(shù)據(jù)整數(shù)部分保存到待發(fā)送的數(shù)組中
a[4]=xiaoshu1; //第二個(gè)溫度數(shù)據(jù)小數(shù)部分保存到待發(fā)送的數(shù)組中
write_com(0x80+11);
write_date(digital[shi1]);
write_com(0x80+12);
write_date(digital[ge1]);
write_com(0x80+13);
write_date(0x2e);
write_com(0x80+14);
write_date(digital[xiaoshu1]);
if(shi1<2||shi1>8){led1=0;
flag=1;}
else{led1=1;}
}
else if(m==2){
uint num2;
uint shi2,ge2,xiaoshu2;
num2=Readtemp2();
shi2=num2/100;
ge2=num2/10%10;
xiaoshu2=num2%10;
a[5]=num2/10; //第三個(gè)溫度數(shù)據(jù)整數(shù)部分保存到待發(fā)送的數(shù)組中
a[6]=xiaoshu2;//第三個(gè)溫度數(shù)據(jù)小數(shù)部分保存到待發(fā)送的數(shù)組中
write_com(0x80+0x40+3);
write_date(digital[shi2]);
write_com(0x80+0x40+4);
write_date(digital[ge2]);
write_com(0x80+0x40+5);
write_date(0x2e);
write_com(0x80+0x40+6);
write_date(digital[xiaoshu2]);
if(shi2<2||shi2>8){led2=0;
flag=1;}
else{led2=1;}
}
else{
uint num3;
uint shi3,ge3,xiaoshu3;
num3=Readtemp3();
shi3=num3/100;
ge3=num3/10%10;
xiaoshu3=num3%10;
a[7]=num3/10;//第四個(gè)溫度數(shù)據(jù)整數(shù)部分保存到待發(fā)送的數(shù)組中
a[8]=xiaoshu3;//第四個(gè)溫度數(shù)據(jù)小數(shù)部分保存到待發(fā)送的數(shù)組中
write_com(0x80+0x40+11);
write_date(digital[shi3]);
write_com(0x80+0x40+12);
write_date(digital[ge3]);
write_com(0x80+0x40+13);
write_date(0x2e);
write_com(0x80+0x40+14);
write_date(digital[xiaoshu3]);
if(shi3<2||shi3>8) //判斷溫度數(shù)據(jù)是否在指定范圍20~90
{led3=0;
flag=1;}
else{led3=1;}
}
}
/***************************************************************/
void InitScom(void) //串口初始化
{
TMOD=0x21;
TH1=0xfd;
TL1=0xfd;
PCON=0x00;
TR1=1;
SCON=0x50;
RI = 0;
TI = 0;
ES=1;
EA=1;
}
void SendChar(uchar SendData) //發(fā)送數(shù)據(jù)
{
SBUF=SendData;
while(TI==0);
TI=0;
}
/**************************主程序*****************************/
void main()
{unsigned int h,i,j;
h=0;
init_lcd();
InitScom();
while(1)
{
flag=0; //清零報(bào)警標(biāo)志
h=0;
display(h);
h=1;
display(h);
h=2;
display(h);
h=3;
display(h);
for(i=0;i<10;i++)//依次發(fā)送數(shù)據(jù)
SendChar(a[i]) ;
delay_50ms(10);
for(i=0;i<4;i++)
if(flag==1)//flag=1則報(bào)警
{
for(j=0;j<500;j++)
{speak=1;
delay_50us(10); //延時(shí)500us
speak=0;
delay_50us(10); //延時(shí)500us
}
delay_50ms(10); //延時(shí)0.5s
}
delay_50ms(20);//再延時(shí)1s每五秒刷新一次數(shù)據(jù)
}
}
/*****************************************************************/
void Receive() interrupt 4 using 0
{ uchar rdata;
if(RI)
{ RI=0;
rdata=SBUF;
P2=rdata; } }

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