8051單片機制作的紅外遙控器控制的數碼管時鐘，可顯示溫度，并將溫度值寫入24c02.

ID:732506 · 發表于 2020-5-4 06:13

可以用紅外遙控器控制的數碼管時鐘，不同按鍵控制寫入ds1302的時間值，從而調整時間。也可通過按鍵顯示溫度，每次顯示后將溫度值順序記入24c02。可以通過仿真查看24c02內的值。不同遙控器需要更改紅外讀入的鍵值，才能正常使用。仿真中用按鍵代替了紅外顯示溫度。實物在普中開發板上運行通過。部分程序借用普中開發板附帶代碼修改而成。

仿真原理圖如下（proteus仿真工程文件可到本帖附件中下載）

單片機源程序如下:

/*******************************************************************************
8 digits LED display Ds1302 Real time clock with IR remote adjust and temperature display
********************************************************************************/
#include<reg52.h>
#include<intrins.h>
sbit SCL = P2^1; /* 定義位變量 */ // I2C總線的時鐘信號
sbit SDA = P2^0; // I2C總線的數據信號
sbit DS1302_CK = P3^6; //時鐘
sbit DS1302_IO = P3^4; //數據
sbit DS1302_CE = P3^5;// DS1302復位
sbit LS138A = P2^2;
sbit LS138B = P2^3;
sbit LS138C = P2^4;
sbit BEEP = P1^5;
sbit IRIN = P3^2;
unsigned char t0,miao,fen,shi;
unsigned int tabe2[8];
unsigned char IRCOM[7];
unsigned char AT24C02Address = 0;
unsigned char code tabe1[]={~0xC0,~0xF9,~0xA4,~0xB0,~0x99,~0x92,~0x82,~0xF8,~0x80,~0x90,~0x40,};
void display();
void display_date();
void display_temp();
void Read_RTC();
extern unsigned int ReadTemperature(void);
extern void InitDS1302();
extern void DS1302SingleWrite(unsigned char reg, unsigned char dat);
extern unsigned char DS1302SingleRead(unsigned char reg);
extern void DS1302SingleWriteRAM(unsigned char ram, unsigned char dat);
extern unsigned char DS1302SingleReadRAM(unsigned char ram);
extern void AT24C02_Write1Byte( unsigned char AT24C02_Address, unsigned char AT24C02_1Byte);
/******************************************************************/
/* 讀時鐘數據 */
/******************************************************************/
void Read_RTC(void) //讀取日歷
{
//unsigned char i,*p;
//p=read_rtc_address; //地址傳遞
//for(i=0;i<7;i++) //分7次讀取秒分時日月周年
//{
//tmpdate[i]=Read_Ds1302(*p);
//p++;
//}
miao=DS1302SingleRead(0x80); miao=(miao>>4)*10+(miao&0x0f);
fen= DS1302SingleRead(0x81); fen=(fen>>4)*10+(fen&0x0f);
shi= DS1302SingleRead(0x82); shi=(shi>>4)*10+(shi&0x0f);
}
void delay(unsigned int a)
{
unsigned char i;
while(a--)
{
for(i=0;i<=80;i++)
;
}
}
void delayIR(unsigned char x) //x*0.14MS
{
unsigned char y;
while(x--)
{
for (y = 0; y<13; y++) {}
}
}
//=================================BEEP驅動===========================================//
//sbit Bell_Out = P3 ^ 0;//元件是動圈式揚聲器（并非有源蜂鳴器），需要MCU驅動發聲
/********************************************************************************************/
void bell( unsigned char a,unsigned char b,unsigned char c,unsigned char d)
{
for(;a>0;a--){//第一個聲音的長度
BEEP = !BEEP;//取反揚聲器驅動口，以產生音頻
delay(b);//音調設置延時
}
for(;c>0;c--){//同上
BEEP = !BEEP;
delay(d);//
}
BEEP = 1;
}
/********************************************************************************************/
//--------------------------------------------揚聲器--按鍵音
//void beep_k(void){beep(10,60,5,250); }
//--------------------------------------------揚聲器--鬧鐘報警
//void beep_a(void){beep(250,16,150,40); }//BELL
//--------------------------------------------揚聲器--成功音
//void beep_y(void){beep(50,30,100,50); }//BELL
//--------------------------------------------揚聲器--無效音
//void beep_n(void){beep(50,80,100,100); }//BELL
/********************************************************************************************/
void beep(void)
{
unsigned char i;
for (i=0;i<100;i++)
{
delay(1);
BEEP=!BEEP; //BEEP reverse
}
BEEP=1; //close buzzer
}
void main()
{
BEEP = 1; //close buzzer
IT0=1; //enable timer 0
//IT1=1;
EX0=1; //enable int 0
EX1=1; //enable int 1
TMOD=0x01,TH0=0x3c,TL0=0xb0, EA=1;//定時器0方式1, enable all int
ET0=1; //INT0下降沿有效
TR0=1;
InitDS1302();
//DS1302SingleWrite(0x83,0x11); //set DATE
//DS1302SingleWrite(0x84,0x12); //set MONTH
//DS1302SingleWrite(0x85,0x05); //set DAY Sun=0,Mon=1
//DS1302SingleWrite(0x86,0x14); //set YEAR
// DS1302SingleWriteRAM(0x00,0x21); //set Alarm1 Hour
// DS1302SingleWriteRAM(0x01,0x15); //set Alarm1 Minute
//DS1302SingleWriteRAM(0x02,0x18); //set Alarm2 Hour
//DS1302SingleWriteRAM(0x03,0x15); //set Alarm2 Minute
while(1)
{
display();
if (fen==0&miao<3)
bell(4,1,8,1);
//if (DS1302SingleReadRAM(0x00) == ((shi/10)*16+shi%10)
// &DS1302SingleReadRAM(0x01) == ((fen/10)*16+fen%10))
// {bell(4,1,8,1);}
//if (DS1302SingleReadRAM(0x02) == ((shi/10)*16+shi%10)
// &DS1302SingleReadRAM(0x03) == ((fen/10)*16+fen%10))
// {bell(4,1,8,1); }
}
}
//外部中斷0 IR Remote
void IR_IN() interrupt 0 //using 0
{
unsigned char j,k,N=0;
P0=0x00;
//char bx;
EX0 = 0; //關掉外部中斷防止中斷的再次發生進入檢測引導碼階段（9ms的低電平4.5ms的高電平）
delayIR(15);
if (IRIN==1)
{ EX0 =1; //9ms的檢測檢測結束從新打開外部中斷
return;
}
//確認IR信號出現
while (!IRIN) //等IR變為高電平，跳過9ms的前導低電平信號。
{delayIR(1);}
for (j=0;j<4;j++) //收集四組數據
{
for (k=0;k<8;k++) //每組數據有8位
{
while (IRIN) //等 IR 變為低電平，跳過4.5ms的引導高電平信號。
{delayIR(1);}
while (!IRIN) //等 IR 變為高電平
{delayIR(1);}
while (IRIN) //計算IR高電平時長（0和1的低電平的時長一樣的，只要判斷高電平時長超過0.56ms并小于1.12ms為1否則為0）
{
delayIR(1);
N++;
if (N>=30)
{
EX0=1;
return;
} //0.14ms計數過長自動離開。
} //高電平計數完畢
IRCOM[j]=IRCOM[j] >> 1; //數據最高位補“0”
if (N>=8) {IRCOM[j] = IRCOM[j] | 0x80;} //高電平持續時間大于1.12ms則數據最高位補“1”
N=0;
} //end for k
} //end for j
if (IRCOM[2]!=~IRCOM[3]) // 判斷有沒有誤碼（有責放棄沒有判斷鍵碼）
{ EX0=1;
return;
}
beep();
DS1302SingleWrite(0x8e,0x00); //allow write to DS1302
switch(IRCOM[2])
{
case 0x40: if (fen>0) {fen--;} else{fen=59;} DS1302SingleWrite(0x81,((fen/10)*16+fen%10)); break;//minute-1,write to ds1302
case 0x43: fen++; if (fen>=60) {fen=0;} DS1302SingleWrite(0x81,((fen/10)*16+fen%10)); break;//minute+1
case 0x15: if (shi>0) {shi--;} else{shi=23;} DS1302SingleWrite(0x82,((shi/10)*16+shi%10)); break;//hour-1
case 0x09: shi++; if (shi>=24) {shi=0;} DS1302SingleWrite(0x82,((shi/10)*16+shi%10)); break;//hour+1
case 0x47: miao=0; DS1302SingleWrite(0x80,0x00); break;//second=0
case 0x44:
display_date(); //display year,month,date
break;
case 0x45:
display_temp();
}
DS1302SingleWrite(0x8e,0x80); // protect write to DS1302
EX0 = 1;
}
void display()
{
unsigned char i;
tabe2[7]=tabe1[miao%10];
tabe2[6]=tabe1[miao/10];
tabe2[5]=0x40;
tabe2[4]=tabe1[fen%10];
tabe2[3]=tabe1[fen/10];
tabe2[2]=0x40;
tabe2[1]=tabe1[shi%10];
tabe2[0]=tabe1[shi/10];
for(i=0;i<8;i++)
{
switch(i)
{
case 0:LS138A=0; LS138B=0; LS138C=0; break;
case 1:LS138A=1; LS138B=0; LS138C=0; break;
case 2:LS138A=0; LS138B=1; LS138C=0; break;
case 3:LS138A=1; LS138B=1; LS138C=0; break;
case 4:LS138A=0; LS138B=0; LS138C=1; break;
case 5:LS138A=1; LS138B=0; LS138C=1; break;
case 6:LS138A=0; LS138B=1; LS138C=1; break;
case 7:LS138A=1; LS138B=1; LS138C=1; break;
}
P0=tabe2[i];
delay(5);
}
}
/* every second timer update second,minute,hour 2 times.*/
void timer0(void) interrupt 1
{
TH0=0x3c,TL0=0xb0;
t0++;
//display();
if(t0==10)
{
t0= 0;
Read_RTC();
}
}
void display_date(void)
{
unsigned char i;
miao=DS1302SingleRead(0x83); miao=(miao>>4)*10+(miao&0x0f);
fen= DS1302SingleRead(0x84); fen=(fen>>4)*10+(fen&0x0f);
shi= DS1302SingleRead(0x86); shi=(shi>>4)*10+(shi&0x0f);
for (i=1;i<255;i++)
display();
}
void display_temp(void)
{
unsigned char n;
P0=0x00;
miao = 0;
fen = ReadTemperature();
shi = 0;
AT24C02_Write1Byte(AT24C02Address,fen);
AT24C02Address++;
for (n=1;n<255;n++)
display();
}
void ButtonPress() interrupt 2 //using INT1
{
display_temp();
}