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#include<reg51.h>
#include<math.h>
#define uchar unsigned char
#define LEDLen 6
uchar send,p,t,Pos;
char receive;
sbit P1_0=P1^0; //P1.0口為高電平，發(fā)送0x08
sbit P1_1=P1^1; //P1.1口為高電平，發(fā)送0xaa
sbit P1_2=P1^2; //P1.2口為高電平，發(fā)送0x55
Uchar code LEDMAP[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f}; //共陰極數(shù)碼管段碼表
xdata unsigned char OUTBIT _at_ 0x8002; //位選線地址
xdata unsigned char OUTSEG _at_ 0x8004; //段選線地址
uchar LEDBuf[LEDLen]; //顯示緩存
void DisplayLED(); //數(shù)碼管顯示函數(shù)
void main()
{
EA=1;
ET0=1;
TMOD=0x21;
TH1=0xfa; //波特率2400
TL1=0xfa;
TR1=1;
TR0=1; //定時(shí)器T0開(kāi)啟
TH0=0xfe; //定時(shí)器T1賦初值,1ms
TL0=0x0c;
IP=0; //設(shè)置各個(gè)中斷均為低優(yōu)先級(jí)
SCON=0x50;
PCON=0x00;
P1=0xf7;
while(1)
{
if(P1_0==1)
send=0x08;
if(P1_1==1)
send=0xaa;
if(P1_2==1)
send=0x55;
SBUF=send;
while(TI==0);
TI=0;
while(RI==0);
RI=0;
receive=SBUF;
if(receive==0x08)
P1=0x0f;
if(receive!=0x08)
{
P1=0x07;
DisplayLED();
}
}
}
void timer0() interrupt 1
{
TH0=0xfe;
TL0=0x0c;
if(t==0)
Pos=0x20;
OUTBIT=0; //關(guān)所有數(shù)碼管
OUTSEG=LEDBuf[t]; //送段碼
OUTBIT=Pos; //選中一位數(shù)碼管
Pos>>=1; //顯示下一位
t++;
if(t==6)
t=0;
}
void DisplayLED() //數(shù)碼管溫度顯示函數(shù)
{
if(receive<0)
LEDBuf[0]=0x40; //溫度低于零攝氏度高位顯示負(fù)號(hào)
if(receive>=0)
LEDBuf[0]=LEDMAP[0]; //溫度高于零攝氏度高位顯示零
if(receive<0)
receive=-receive;
LEDBuf[1]=LEDMAP[receive/10]; //數(shù)碼管顯示溫度
LEDBuf[2]=LEDMAP[receive%10];
LEDBuf[3]=0x3f;
LEDBuf[4]=0x3f;
LEDBuf[5]=0x3f;
}

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#include<reg51.h>
#define uchar unsigned char
#define out P1 //步進(jìn)電機(jī)脈沖控制輸出口
#define LEDLen 6
#define LowTemp (-20) // A/D 0
#define HighTemp 70 // A/D 255
xdata unsigned char OUTBIT _at_ 0x8002; //位選線地址
xdata unsigned char OUTSEG _at_ 0x8004; //段選線地址
xdata unsigned char ADPort _at_ 0x9000; //AD轉(zhuǎn)化地址
uchar code LEDMAP[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
//共陰極數(shù)碼管段碼表
Uchar code turns[]={0x01,0x03,0x02,0x06,0x04,0x0c,0x08,0x09}; //步進(jìn)電機(jī)正轉(zhuǎn)相序表
uchar code turnd[]={0x09,0x08,0x0c,0x04,0x06,0x02,0x03,0x01}; //步進(jìn)電機(jī)反轉(zhuǎn)相序表
uchar LEDBuf[LEDLen]; //顯示緩存
signed char CurTemp; //定義當(dāng)前溫度
signed char r; //數(shù)碼管顯示溫度
char send;
uchar receive,t,p,Pos;
signed char tl,th,tw;
signed char tb=20; //初始化標(biāo)準(zhǔn)溫度為20攝氏度
uchar m=0; //初始化設(shè)置溫上線按鍵次數(shù)為0
uchar n=0; //初始化設(shè)置溫下線按鍵次數(shù)為0
uchar mode; //步進(jìn)電機(jī)正反轉(zhuǎn)工作方式控制位
void DisplayLED(); //數(shù)碼管顯示函數(shù)
unsigned char ReadAD(); //A/D采樣程序
void ReadTemp(); //采樣溫度讀取
void Motorcontrol(); //步進(jìn)電機(jī)控制程序
void Delay(uchar CNT)
{
uchar i;
while(CNT--!=0)
for(i=100;i!=0;i--);
}
void main()
{
EA=1;
ES=1; //總中斷允許
EX0=1; //外部中斷0允許
EX1=1; //外部中斷1允許
ET0=1; //定時(shí)器T0中斷允許
TMOD=0x21; //定時(shí)器T0工作在方式1
IT0=1; //選擇外中斷0為跳沿觸發(fā)
IT1=1; //選擇外中斷1為跳沿觸發(fā)
TR0=1; //定時(shí)器T0開(kāi)啟
TR1=1;
TH0=0xfe; //定時(shí)器T0賦初值,1ms
TL0=0x0c;
TH1=0xfa; //波特率2400
TL1=0xfa;
SCON=0x50;
PCON=0x00;
IP=0; //設(shè)置各個(gè)中斷均為低優(yōu)先級(jí)
P1=0x00;
while(1)
{
th=tb+m; //溫上線
tl=tb-n; //溫下線
tw=th-tl;
ReadTemp(); //讀取當(dāng)前溫度
r=CurTemp;
if(r<=tl) //溫度低于下線溫度
{
DisplayLED();
mode=1;
Motorcontrol();
}
if((r>tl)&&(r<=th))
DisplayLED();
if(r>th)
{
DisplayLED();
mode=2;
Motorcontrol();
}
}
}
void timer0() interrupt 1
{
TH0=0xfe;
TL0=0x0c;
if(t==0)
Pos=0x20;
OUTBIT=0; //關(guān)所有數(shù)碼管
OUTSEG=LEDBuf[t]; //送段碼
OUTBIT=Pos; //選中一位數(shù)碼管
Pos>>=1; //顯示下一位
t++;
if(t==6)
t=0;
}
void int0() interrupt 0 //外部中斷0程序
{
m++; //溫上線按鍵次數(shù)
}
void int1() interrupt 2 //外部中斷1程序
{
n++; //溫下線按鍵次數(shù)
}
void Port() interrupt 4
{
ES=0;
if(TI==1)
TI=0;
if(RI==1)
{
receive=SBUF;
RI=0;
if(receive==0x08)
{
send=receive;
P1=0x10;
}
if(receive==0xaa)
{
send=CurTemp;
P1=0x20;
}
if(receive==0x55)
{
send=0;
P1=0x40;
}
if((receive!=0x08)&&(receive!=0xaa)&&(receive!=0x55))
{
send=0;
P1=0x80;
}
}
SBUF=send;
ES=1;
}
void DisplayLED() //數(shù)碼管溫度顯示函數(shù)
{
if(r<=tl) //溫度低于下線溫度
{
if(r<0)
LEDBuf[0]=0x40; //溫度低于零攝氏度高位顯示負(fù)號(hào)
if(r>=0)
LEDBuf[0]=LEDMAP[0]; //溫度高于零攝氏度高位顯示零
if(r<0)
r=-r;
LEDBuf[1]=LEDMAP[r/10]; //數(shù)碼管顯示溫度及L
LEDBuf[2]=LEDMAP[r%10];
LEDBuf[3]=0x38;
LEDBuf[4]=LEDMAP[tw/10];
LEDBuf[5]=LEDMAP[tw%10];
}
if((r>tl)&&(r<=th))
{
if(r<0)
LEDBuf[0]=0x40; //溫度低于零攝氏度高位顯示負(fù)號(hào)
if(r>=0)
LEDBuf[0]=LEDMAP[0]; //溫度高于零攝氏度高位顯示零
if(r<0)
r=-r;
LEDBuf[1]=LEDMAP[r/10]; //數(shù)碼管顯示溫度及C
LEDBuf[2]=LEDMAP[r%10];
LEDBuf[3]=0x39;
LEDBuf[4]=LEDMAP[tw/10];
LEDBuf[5]=LEDMAP[tw%10];
}
if(r>th)
{
LEDBuf[0]=LEDMAP[0]; //數(shù)碼管高位顯示零
LEDBuf[1]=LEDMAP[r/10]; //數(shù)碼管顯示溫度及H
LEDBuf[2]=LEDMAP[r%10];
LEDBuf[3]=0x76;
LEDBuf[4]=LEDMAP[tw/10];
LEDBuf[5]=LEDMAP[tw%10];
}
}
unsigned char ReadAD() //A/D采樣程序
{
unsigned int i;
ADPort=0; //啟動(dòng)A/D變換
for(i=0;i<20;i++); //延時(shí)100us
return(ADPort); //得到A/D采樣值
}
void ReadTemp() //采樣溫度讀取
{
unsigned char i;
signed int Temp;
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