#include<reg51.h>
#define uchar unsigned char
#define uint unsigned int
uchar code DSY_CODE[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
sbit ST=P2^5;
sbit OE=P2^7;
sbit EOC=P2^6;
sbit CLK=P2^4;
sbit H_LED=P3^0;
sbit L_LED=P3^1;
sbit BEEP=P3^7;
uchar t=0;
void DelayMS(uint x)
{
uchar i;
while(x--)
for(i= 0 ; i < 120 ; i ++ ) ;
}
void Show_Temperature()
{
uchar i,DSY_IDX[]={0xF7,0xFB,0xFD};
for(i=0;i<3;i++)
{
P0 =DSY_CODE[Temperature[i]] ;
P2 &= DSY_IDX[i];
DelayMS(5);
P2 |=0x0F;
}
}
void main()
{
uchar d;
IE = 0x8a;
TMOD =18;
TH0 =245;
TL0 = 0;
TH1 =(65536 - 1000)/256;
TL1= (65536 - 1000)%256;
TR0 = 1;
H_LED =L_LED =1 ;
while(1)
{
ST = 0;ST =1;ST = 0;
while(1)
{
if(EOC == 1)
{
OE = 1;
d = P1;
OE = 0;
Temperature[2] = d/100;
Temperature[1] = d%100/10;
Temperature[0] = d%10;
Show_Temperature();
if(d<60)
{
TR1 = 1;L_LED = !H_LED;
}
else
if(d>160)
{
TR1= 1;H_LED = !L_LED;
}
else
{
TR1 =0; H_LED = L_LED = 1;
}
break;
}
}
}
}
void T0_INT() interrupt 1
{
CLK=~CLK;
}
void T1_INT() interrupt 3
{
TH1 = (65536 - 1000) / 256;
TL1 = (65536- 1000) %256;
BEEP = ~BEEP;
if(L_LED == 0)
{
if (++t !=150) return;
}
else
{
if (++t !=60) return;
}
t = 0;
DelayMS(20);
}
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