自制高精度控制電熱水瓶

#include #include #define uchar unsigned char#define uint unsigned intsbit GW=P3^0;sbit SW=P3^1;sbit BW=P3^2;sbit DQ=P3^3;sbit JDQ=P3^4;sbit BAW=P3^5;sbit FMQ=P3^7;bit K;code uchar NUM[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};uchar temp_value;uchar sec;uchar TH=96,TL=50;void delay(uchar a){while(a--);}void INIT(){TMOD=0x01;TH0=0x3c;TL0=0xb0;TR0=1;}void init_DS18B20(){uchar b=0;DQ=1;delay(8);DQ=0;delay(100);DQ=1;delay(14);b=DQ;delay(20);}uchar read(){uint i, dat=0;for(i=8;i>0;i--){DQ=1;_nop_();_nop_();dat>>=1;DQ=0;_nop_();_nop_();_nop_();_nop_();DQ=1;_nop_();_nop_();_nop_();_nop_();if(DQ)dat|=0x80;delay(12);}DQ=1;return(dat);}void write(uchar dat){uchar d=0;for(d=8;d>0;d--){DQ=1;_nop_();_nop_();DQ=0;delay(1);DQ=dat&0x01;delay(12);dat=dat/2;}DQ=1;delay(2);}void ReadTemp(){uint a=0;uint b=0;init_DS18B20();write(0xCC);    write(0x44); delay(100); init_DS18B20();write(0xCC);  write(0xBE);  delay(100);a=read(); b=read(); temp_value=((b<<8)|a)*0.0625;          }void display (uchar num0,uchar num1,uchar num2){ P1=NUM[num0];GW=0;delay(200);GW=1;P1=NUM[num1];SW=0;delay(200);SW=1;P1=NUM[num2];BW=0;delay(200);BW=1;}void wenkong(){if(temp_value=TH){JDQ=0;}}main() { uchar a,b,c,t;INIT();K=0;if(sec==0)FMQ=0;BZ: if(sec>=1)FMQ=1;if(temp_value>=TH&K==0){sec=0;FMQ=0;if(sec==3)FMQ=1;K=!K;}while(1){if(TF0==1){TF0=0;TH0=0x3c;TL0=0xb0;t++;}if(t==20){t=0;sec++;BAW=0;}if(sec==4){sec=0;BAW=1;}ReadTemp();a=temp_value%10; b=temp_value/10%10;c=temp_value/100%10;display(a,b,c);wenkong();goto BZ;}}