#include<reg52.h>
typedef unsigned char uint8;
typedef unsigned int uint16;
sbit rs=P2^6;
sbit rw=P2^5;
sbit e=P2^7;
sbit beep=P3^7;
sbit dq=P3^6;
sbit led=P3^1;
sbit k1=P3^2;
sbit k2=P3^4;
sbit k3=P3^5;
sbit k4=P3^3;
uint8 num[]="0123456789.C";
uint8 d1[8]="Temper: ";
uint8 d2[2]="H:";
uint8 d3[2]="L:";
uint8 tm[5],tm1[5],tm2[5];
uint8 a,c,temp;
float dio;
uint16 k;
uint8 mode,sheding=0;
char wenduh=40,wendul=20;
void delay(uint16 i)
{
while(i--);
}
void int0init()
{
EA=1;
EX0=1;
IT0=1;
}
void int1init()
{
EA=1;
EX1=1;
IT1=1;
}
void wrc(uint8 c)
{
delay(1000);
rs=0;
rw=0;
e=0;
P0=c;
e=1;
delay(10);
e=0;
}
void wrd(uint8 dat)
{
delay(1000);
rs=1;
rw=0;
e=0;
P0=dat;
e=1;
delay(10);
e=0;
rs=0;
}
void init()
{
delay(1000);
wrc(0x38);
wrc(0x38);
wrc(0x38);
wrc(0x06);
wrc(0x0c);
wrc(0x01);
}
//DS18B20?ì2a??
void ds18b20init()
{
dq=1;
delay(1);
dq=0;
delay(80);
dq=1;
delay(5);
dq=0;
delay(20);
dq=1;
delay(35);
}
void ds18b20wr(uint8 dat)
{
uint8 i;
for(i=0;i<8;i++)
{
dq=0;
dq=dat&0x01;
dat>>=1;
delay(8);
dq=1;
delay(1);
}
}
uint8 ds18b20rd()
{
uint8 value,i;
for(i=0;i<8;i++)
{
dq=0;
value>>=1;
dq=1;
if(dq==1)value|=0x80;
delay(8);
}
return value;
}
uint8 readtemp()
{
uint8 b;
ds18b20init();
ds18b20wr(0xcc);
ds18b20wr(0x44);
delay(100);
ds18b20init();
ds18b20wr(0xcc);
ds18b20wr(0xbe);
a=ds18b20rd();
b=ds18b20rd();
b<<=4;
c=b&0x80;
b+=(a&0xf0)>>4;
a=a&0x0f;
return b;
}
void time0init()
{
TMOD=0x01;
TH0=0xfc;
TL0=0x18;
TR0=1;
EA=1;
ET0=1;
}
void sound()
{
uint8 i=100;
while(i--)
{
beep=~beep;
delay(100);
}
}
void datapros()
{
dio=a*0.0625;
k=dio*10000;
wrc(0x08+0x80);
if(c==0x80)
{
wrd('-');
temp=temp-1;
temp=(~temp);
}
else
{
wrd('+');
temp=(temp);
}
tm[0]=num[temp/100];
tm[1]=num[temp%100/10];
tm[2]=num[temp%100%10];
tm[3]=num[10];
tm[4]=num[k/1000];
tm[5]=num[11];
tm1[0]=num[wenduh/100];
tm1[1]=num[wenduh%100/10];
tm1[2]=num[wenduh%100%10];
tm2[0]=num[wendul/100];
tm2[1]=num[wendul%100/10];
tm2[2]=num[wendul%100%10];
}
void display()
{
uint8 i;
wrc(0x80);
for(i=0;i<8;i++)
{
wrd(d1[ i]);
}
wrc(0x09+0x80);
for(i=0;i<6;i++)
{
wrd(tm[ i]);
}
wrc(0x80+0x40);
for(i=0;i<2;i++)
{
wrd(d2[ i]);
}
for(i=0;i<3;i++)
{
wrd(tm1[ i]);
}
wrc(0x80+0x49);
for(i=0;i<2;i++)
{
wrd(d3[ i]);
}
for(i=0;i<3;i++)
{
wrd(tm2[ i]);
}
}
void keypros()
{
if(mode==1)
{
if(k2==0)
{
delay(1000);
if(k2==0)
{
wenduh++;
if(wenduh>=120)wenduh=120;
}
}
if(k3==0)
{
delay(1000);
if(k3==0)
{
wenduh--;
if(wenduh<=0)wenduh=0;
}
}
}
if(mode==2)
{
if(k2==0)
{
delay(1000);
if(k2==0)
{
wendul++;
if(wendul>=120)wendul=120;
}
}
if(k3==0)
{
delay(1000);
if(k3==0)
{
wendul--;
if(wendul<=0)wendul=0;
}
}
}
}
void data_change()
{
if(temp>=wenduh&&sheding==1)
{
led=1;
sound();
}
if(temp<wendul&&sheding==1)
{
led=0;
}
}
void main()
{
init();
int0init();
int1init();
time0init();
led=0;
while(1)
{
temp=readtemp();
keypros();
datapros();
display();
data_change();
}
}
void int0() interrupt 0
{
delay(1000);
mode++;
sheding=0;
if(mode==3)
{
mode=1;
}
}
void int1() interrupt 2
{
delay(1000);
mode=0;
sheding=1;
}
|
