單片機紅外脈沖解碼電路采用共陰極四位數(shù)碼管；8050開關三極管；STC89C52單片機；12M晶振。C51程序/*紅外脈沖破解程序。脈沖波長用四位數(shù)碼管以十六進制顯示。脈沖個數(shù)用四位數(shù)碼管以十進制顯示。*/#include<reg52.h>sbitshow=P2A4;sbitback=P2A5;sbitNshow=P2A6;unsignedintbox[46];unsignedcharcodeNum[]={0xEB,0x41,0xB3,0xBA,0x78,0xDA,0xDB,0xA8,0xFB,0xFA,0xF9,0x5B,0xC3,0x3B,0xD3,0xD1,0x04};//數(shù)碼管1-F顯示的花樣程序(根據(jù)數(shù)碼管的接線方法的不同，花樣碼也會不同)unsignedcharNu[4];unsignedchark=0;〃脈沖計數(shù)判斷unsignedchare=0;//脈沖總數(shù)存儲unsignedchary=0;//數(shù)碼管顯示第幾個脈沖unsignedintA,w;voidshow_led(void);voidwait_short(void);voidfour_led(unsignedcharled)//四個數(shù)碼管用十六進制顯示脈沖長度。{Nu[1]=box[led]%16;Nu[2]=(box[led]/16)%16;Nu[3]=(box[led]/256)%16;Nu[4]=box[led]/4096;}voidmain(){P2=0XF0;EA=1;EX0=1;IT0=1;ET0=1;TMOD=0x01;TR0=0;TH0=0;TL0=0;y=0;k=0;e=0;while(1){if(Nshow==0)〃檢查顯示的脈沖數(shù)數(shù)碼管用十進制顯示{Nu[1]=y%10;Nu[2]=(y/10)%10;Nu[3]=(y/100)%10;Nu[4]=(y/1000)%10;A=3000;while(A--)show_led();four_led(y);}//================================================================================if(back==0)〃回看脈沖長度{A=10000;while(A--);if(y>=1){y=y-1;four_led(y);}else{y=0;four_led(y);}four_led(y);〃鞏固A=400;while(A--)show_led();four_led(y);}//==========================================================================if(show==0)〃下一個脈沖長度{P2=0XF0;P1=0X00;A=10000;while(A--);if(y<e){y=y+1;four_led(y);}else{Nu[1]=16;Nu[2]=16;Nu[3]=16;Nu⑷=16;A=400;while(A--)show_led();y=0;four_led(y);}four_led(y);〃鞏固A=400;while(A--)show_led();four_led(y);}//===============================================================================show_led();}while(1);}voidInt0_Routine()interrupt0using0〃下降沿中斷{TR0=0;box[k]=TH0*256+TL0;TH0=0;TL0=0;TR0=1;if(k==0)e=0;e=e+1;k=k+1;}voidtime_int()interrupt1using0〃計數(shù)器中斷{TR0=0;box[k]=TH0*256+TL0;TH0=0;TL0=0;k=0; 〃計數(shù)器溢出K歸零準備下一個脈沖信號的接受y=0; //計數(shù)器溢出脈沖結束數(shù)碼管開始顯示第0個脈沖four_led(y);}voidshow_led(void)〃數(shù)碼管顯示數(shù)值{if(Nu[4]!=0){P2=0xF1;P1=Num[Nu[1]];wait_short();P2=0xF2;P1=Num[Nu[2]];wait_short();P2=0xF4;P1=Num[Nu[3]];wait_short();P2=0xF8;P1=Num[Nu[4]];wait_short();}else{if(Nu[3]!=0){P2=0xF1;P1=Num[Nu[1]];wait_short();P2=0xF2;P1=Num[Nu[2]];wait_short();P2=0xF4;P1=Num[Nu[3]];wait_short();}else{if(Nu[2]!=0){P2=0xF1;P1=Num[Nu[1]];wait_short();P2=0xF2;P1=Num[Nu[2]];wait_short();}else{P2=0xF1;P1=Num[Nu[1]];wait_short();}

voidwait_short(void)〃消岐延時{w=40;while(w--);}解碼結果引導碼取值關機‘00000000「11111101「00000000‘11111111max3235532400回車'00000000「11111101「10000000「01111111min32315322500鍵"00000000「11111101「01000000「10111111'00000000「11111101「10100000「01011111結束碼1取值3鍵"00000000‘11111101「01100000‘10011111max122007122050,00000000「11111101「00010000「11101111min1217541217005鍵,00000000,11111101「10010000‘011011117鍵「00000000,11111101「00110000「11001111結束碼2取值「00000000,11111101「10110000,01001111max2602726100■a"00000000『11111101「01110000「10001111min2600325950向上鍵,00000000,11111101,10001000「01110011MENU,00000000「11111101「01001000「10110111結束碼3取值向左,00000000「11111101「00101000「11010111max1516OK「00000000,11111101「10101000‘01010111min1413減號'00000000「111