returnmidpos+1; }}voiddisplay(unsignedcharData){ DigShowNumber(2,Data/10,0); DigShowNumber(1,Data%10,0);}voiddisplay_aim(unsignedcharData){ DigShowNumber(6,Data/10,0); DigShowNumber(5,Data%10,0);}voidtimer_init(void){ TMOD=0x01; TH0=(65536-50000)/256; TL0=(65536-50000)%256; EA=1; ET0=1; TR0=1;}voidtime0(void)interrupt1{ uint8times; TH0=(65536-50000)/256; TL0=(65536-50000)%256; times++; if(10==times) { times=0; period=1; }}voiddelay_ms(unsignedintdt){registerunsignedcharbt,ct;for(;dt;dt--)for(ct=2;ct;ct--)for(bt=250;--bt;);}voidworkon(){if(temp>=aim_temp){RELAY=0;BUZZER=1;LED1=1;LED2=0;}else{RELAY=1;BUZZER=0;LED1=0;LED2=1;}}voidworkoff(){RELAY=0;BUZZER=0;LED1=1;LED2=1;}voidmain(){ unsignedcharmodel; unsignedchard=0x00; unsignedcharkey; unsignedcharwork=0; RELAY=0;BUZZER=0; LED1=1;LED2=1; period=1; timer_init(); model=model_set(anlog_output_on,anlog_model_0,auto_increment_off,anlog_channel_0); while(1) { //開關(guān)動作時溫度設(shè)置 if(KEY_ADD==0){delay_ms(10);if(KEY_ADD==0){aim_temp++;while(KEY_ADD==0);}} if(KEY_DEC==0){delay_ms(10);if(KEY_DEC==0){aim_temp--;while(KEY_DEC==0);}} //溫度采集 if(period) { period=0; d=ReadIIC(0x90,model); temp=temp_measure(d); } //溫度顯示 display(temp); display_aim(aim_temp); //開關(guān)動作 if(KEY_START==0) { delay_ms(10); if(KEY_START==0) { work=1; workon(); while(KEY_START==0); } } elseif(work==1)workon(); if(KEY_STOP==0) { delay_ms(10); if(KEY_STOP==0) { work=0; workoff(); while(KEY_STOP==0); } } }}PCF8591模塊配置PCF8591_AD_drv.C#include"PCF8591_AD_drv.h"unsignedcharmodel_set(bitanlog_sw,unsignedcharinput_model,bitauto_increment,unsignedcharAD_channel){ unsignedcharControl_Key; Control_Key=0x00; if(anlog_sw) { Control_Key|=0x40; } input_model=input_model<<4; Control_Key|=input_model; if(auto_increment) { Control_Key|=0x04; } Control_Key|=AD_channel; returnControl_Key;}PCF8591_AD_drv.H#ifndef__PCF8591_H__#define__PCF8591_H__#include<reg52.h>/*******控制字定義*******//*模擬信號輸出開關(guān)*/#defineanlog_output_off0 //禁止模擬輸出#defineanlog_output_on1 //開啟模擬輸出/*模擬輸入模式設(shè)置*/#defineanlog_model_00x00//四輸入#defineanlog_model_10x01//共差分輸入#defineanlog_model_2 0x02 //雙直通單差分輸入#defineanlog_model_3 0x03//雙差分輸入/*通道自動增量設(shè)置*/#defineauto_increment_off0//禁止通道自動增量#defineauto_increment_on1//開啟通道自動增量/*模擬轉(zhuǎn)換通道設(shè)置*/#defineanlog_channel_00x00//通道0#defineanlog_channel_10x01//通道1#defineanlog_channel_20x02//通道2#defineanlog_channel_30x03//通道3unsignedcharmodel_set(bitanlog_sw,unsignedcharinput_model,bitauto_increment,unsignedcharAD_channel);#endifIIC總線配置IIC_drv.C#include"IIC_drv.h"staticvoidStart(void){ Sda=1; Scl=1; Sda=0;}staticvoidStop(void){ Sda=0; Scl=1; Sda=1;}staticunsignedcharRespons(void){ unsignedcharOverTime=0;//超時 unsignedcharTempFlag=0; OverTime=0;Sda=1;//釋放數(shù)據(jù)線Scl=1; while(1) { if(Sda)//應(yīng)答信號沒來 { if(OverTime++>200) { TempFlag=0;//應(yīng)答信號長時間沒有來，認(rèn)為無應(yīng)答 break; } } else { TempFlag=1;///檢測到應(yīng)答信號 break; } } Scl=0; returnTempFlag;}staticvoidNoRespons(void)//非應(yīng)答{Sda=1;//釋放數(shù)據(jù)線Scl=1; Scl=0;}staticvoidWriteByte(unsignedchartemp){ unsignedchari; Scl=0; for(i=0;i<8;i++) { Sda=temp&0x80; temp<<=1; Scl=1;//scl拉高，準(zhǔn)備寫數(shù)據(jù) Scl=0;//scl拉低，寫數(shù)據(jù)完成 }}staticunsignedcharReadByte(void){ unsignedchari; unsignedcharx=0; for(i=0;i<8;i++) { Scl=1; x<<=1; x|=(unsignedchar)Sda; Scl=0; } returnx;}voidWriteIIC(unsignedchardevice,unsignedcharparameter,unsignedchartemp){ Start(); WriteByte(device); if(Respons()) { WriteByte(parameter); if(Respons()) { WriteByte(temp); if(Respons()) { Stop(); } else { Stop(); } } else { Stop(); } } else { Stop(); }}unsignedcharReadIIC(unsignedchardevice,unsignedcharparameter){ unsignedcharx; Start(); WriteByte(device); if(Respons()) { WriteByte(parameter); if(Respons()) { Start(); WriteByte(device|0x01); if(Respons()) { x=ReadByte(); NoRespons(); Stop(); } else { Stop(); } } else { Stop(); } } else { Stop(); } returnx;}IIC_drv.h#include<reg52.h>#include<intrins.h>sbitScl=P2^1; //串行時鐘sbitSda=P2^0; //串行數(shù)據(jù)voidWriteIIC(unsignedchardevice,unsignedcharaddress,unsignedchartemp);unsignedcharReadIIC(unsignedchardevice,unsignedcharaddress);顯示模塊配置DIGITRON_DRV_C#include"digitron_drv.h"codeuint8Segment[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};codeuint8Select[]={0xff,0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80};staticvoidDigOutput(uint8SelectByte,uint8SegmentByte){uint8i; DIG_SHCP=0; DIG_STCP=0; for(i=0;i<8;i++) { if(SegmentByte&0x80){ DIG_DATA=1;} else{ DIG_DATA=0;} _nop_(); DIG_SHCP=1; _nop_(); DIG_SHCP=0; _nop_(); SegmentByte<<=1; } for(i=0;i<8;i++) { if(SelectByte&0x80) DIG_DATA=1; else DIG_DATA=0; _nop_(); DIG_SHCP=1; _nop_(); DIG_SHCP=0; _nop_(); SelectByte<<=1; } DIG_STCP=1; _nop_(); DIG_STCP=0; _nop_();}voidDigShowCustom(uint8DigSelect,uint8CustomSeg){if(0<DigSelect<9){DigOutput(Select[DigSelect],CustomSeg);}}voidDigShowNumber(uint8DigSelect,uint8Number,bitDp){if((0<DigSelect<9)&&(Number<10)){if(Dp) {DigOutput(Select[DigSelect],(Segment[Number]&~0x80));