16、51单片机恒温控制数码管显示温度

#include <reg52.h> #define uint unsigned int #define uchar unsigned char uchar code table[13]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xff,0x89,0xc7}; uchar code table1[4]={0xfe,0xfd,0xfb,0xf7}; uchar data discop[4]={0}; uchar num1=0; uchar KEY_SET_Flog=0; //设置标示位 uchar TH_DAT=0,TL_DAT=0; uchar temp1=0,temp2=0; sbit dic=P0^7; sbit KEY1=P3^5; sbit KEY2=P3^6; sbit KEY3=P3^7; sbit BEEP=P1^3; sbit Relay=P1^0; sbit LED_Y=P1^2; sbit LED_R=P1^1; void delay(uint z) { uint x,y; for(x=z;x>0;x--) for(y=110;y>0;y--); } #include"DS18B20.H" void keyscan() { if(KEY1==0) { delay(10); if(KEY1==0) { KEY_SET_Flog++; if(KEY_SET_Flog>2) { Set_DS18B20(TH_DAT,TL_DAT); KEY_SET_Flog=0; Read_18B20_Temperature(); Read_18B20_Temperature(); Read_18B20_Temperature(); delay(200); } while(!KEY1); } } switch(KEY_SET_Flog) { case 1: //上限温度设置 if(!KEY2) { delay(8); if(!KEY2) { if(TH_DAT<99) TH_DAT++; while(!KEY2); } } else if(!KEY3) { delay(8); if(!KEY3) { if(TH_DAT>0) TH_DAT--; while(!KEY3); } } break; case 2: //下限温度设置 if(!KEY2) { delay(8); if(!KEY2) { if(TL_DAT<99) TL_DAT++; while(!KEY2); } } else if(!KEY3) { delay(8); if(!KEY3) { if(TL_DAT>0) TL_DAT--; while(!KEY3); } } break; default: break; } } void didi() { BEEP=0; delay(500); BEEP=1; delay(500); } void control() { if((Tem_dispbuf[4]>TH_DAT)||(Tem_dispbuf[4]==TH_DAT&&Tem_dispbuf[0]>0)) //当前温度大于上限 { didi(); LED_Y=0; Relay=1; LED_R=1; } else if(Tem_dispbuf[4]<TL_DAT) { Relay=0; LED_R=0; LED_Y=1; // BEEP=0; didi(); } else { LED_Y=1; BEEP=1; } } void display() { if(KEY_SET_Flog==0) { Read_18B20_Temperature(); if(temp1>Tem_dispbuf[4]) temp2=temp1-Tem_dispbuf[4]; else temp2=Tem_dispbuf[4]-temp1; if(temp2<5) { temp1=Tem_dispbuf[4]; discop[0]=10; discop[1]=Tem_dispbuf[2]; discop[2]=Tem_dispbuf[1]; discop[3]=Tem_dispbuf[0]; control(); } } else if(KEY_SET_Flog==1) { discop[0]=11; discop[1]=TH_DAT/10; discop[2]=TH_DAT%10; discop[3]=0; } else if(KEY_SET_Flog==2) { discop[0]=12; discop[1]=TL_DAT/10; discop[2]=TL_DAT%10; discop[3]=0; } } void main() { Read_18B20_Temperature(); Read_18B20_Temperature(); Read_18B20_Temperature(); Read_18B20_Temperature(); Read_18B20_Temperature(); Read_18B20_Temperature(); temp1=Tem_dispbuf[4]; delay(1000); TH_DAT=DS18B20_Temp_data[2]; TL_DAT=DS18B20_Temp_data[3]; Read_18B20_Temperature(); Read_18B20_Temperature(); temp1=Tem_dispbuf[4]; Read_18B20_Temperature(); Read_18B20_Temperature(); temp1=Tem_dispbuf[4]; if(TH_DAT>99) TH_DAT=50; if(TL_DAT>99) TL_DAT=20; TMOD=0x01; TH0=(65536-3000)/256; TL0=(65536-3000)%256; ET0=1; TR0=1; EA=1; temp1=Tem_dispbuf[4]; while(1) { keyscan(); delay(100); display(); } } void timer0() interrupt 1 //定时器1用于数码管动态扫描 { TH0=(65536-3000)/256; TL0=(65536-3000)%256; if(num1==2) P0=table[discop[num1]]-0X80; else P0=table[discop[num1]]; P2=table1[num1]; num1++; if(num1==4) num1=0; }