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//主程序清單： #include<reg52.h> #include<stdio.h> #include<intrins.h> typedef unsigned charuint8; typedef unsignedint uint16; typedef unsigned charuchar; typedef unsigned intuint; void main() { uchar i; RXBUF tmp; EA=1; EX0=1; EX1=1; IT0=1; IT1=1; while(1) { receive(&tmp); for(i=0;i<100;i++) { BCDDisplay(tmp.HZ,tmp.WZ); if(tmp.HZ>=25) DENG2=0; else DENG2=1; if(tmp.WZ>=30) DENG1=0; else DENG1=1; } } //溫濕度顯示子程序清單： void start(void) { DHT11_IO=1; Delay1(); DHT11_IO=0; Delay2(20);//>18ms DHT11_IO=1; Delay1();//20-40us Delay1(); Delay1(); Delay1(); Delay1(); } ucharreceive_byte(void) { uchar i,temp,count; for(i=0;i<8;i++) { count=2; while((!DHT11_IO)&&count++) //等待50us低電平結(jié)束 temp=0; Delay1();Delay1();Delay1();Delay1(); if(DHT11_IO==1)temp=1; count=2; while((DHT11_IO)&&count++); if(count==1)break; data_byte<<=1; data_byte|=temp; } return data_byte; } void receive(RXBUF*tmp) { uchar check,num_check; uchar count; start();//開始信號 DHT11_IO=1; if(!DHT11_IO)//讀取DHT11響應信號 { count=2; while((!DHT11_IO)&&count++); //DHT11高電平80us是否結(jié)束 count=2; while((DHT11_IO)&&count++); tmp -> HZ = receive_byte(); tmp -> HX = receive_byte(); tmp -> WZ = receive_byte(); tmp -> WX = receive_byte(); check = receive_byte(); DHT11_IO=0;//拉低延時50us DHT11_IO=1; num_check = tmp -> HZ + tmp -> HX + tmp -> WZ + tmp-> WX; if(num_check = check) { check =num_check; } } } //外部中斷0的子程序清單： void int0() interrupt0 { while(WASI==0) { uint i; for(i=0;i<250;i++) { BEEP= 0; DENG4=0; mDelay(50); BEEP=1; DENG4=1; mDelay(50); F_Rotation(); } break; } while(WASI==0) { BEEP=0; DENG4=0; mDelay(150); DENG4=1; BEEP=1; mDelay(150); } while(WASI==1) { B_Rotation(); break; } } void BCDDisplay(ucharH,uchar W) { BCD_PORT = BCD[W / 100]; BCD1 = 0; mDelay(10); BCD1 = 1; } }
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