//----------------------------------------------------------------//PIC16F887 紅外解碼程序//指令周期1us,#include htc.h>                // header file with compiler macros, for// example __CONFIG// the processor header file, with register // and bit definitions (pic16f887.h) is// automatically included#define uchar unsigned char#define uint unsigned int// __CONFIG sets the PIC16F887 Configuration Words.  See bottom of the header// file pic16f887.h for fuse option constants.__CONFIG(INTCLK  WDTDIS  PWRTDIS  

MCLRDIS  UNPROTECT  DUNPROTECT  BORDIS  IESODIS  FCMDIS  LVPDIS);__CONFIG(BORV40); // 2nd config word////// /////////////////////////////////////////////////uint shuju[3]={0};   //存放數(shù)據(jù)uint temp="0";     //臨時變量uchar i,j;     //數(shù)組及移位計數(shù)用uchar biaozhi="0";   //起始碼標志位uchar flag="1";    //有鍵按下，打開定時器void init_io(void)   //初始化函數(shù){TRISC = 0xFF;   //置CCP1口為輸入態(tài)TRISD = 0x00;   //置D口為輸出態(tài)CCP1CON=0x04;   //CCP1模塊工作于捕捉方式CCP1IE=1;    //開中斷CCP1IF=0;    //清捕捉標志位PEIE=1;     //開外部中斷T1CON=0;    //配置定時器T1不分頻，使用內(nèi)部時鐘，且先禁止T1ei();                   // enable global interruptsTMR1H=0;    //計數(shù)值清0TMR1L=0;PORTD=0;    //輸出清0}main(){init_io();     //初始化函數(shù)while(1);     //等待CCP1模塊中斷產(chǎn)生}void interrupt interrupt_service(void)  //中斷{if (CCP1IE  CCP1IF)     //判斷是否為CCP1模塊中斷，當在一個系統(tǒng)中時會用{if(flag==1)          {TMR1H=0;TMR1L=0;TMR1ON=1;      //開定時器flag=0;}else{TMR1ON=0;       //先停定時器temp=TMR1L+TMR1H*256;   //取數(shù)據(jù)并判斷TMR1H=0;      //清0計數(shù)值TMR1L=0;TMR1ON=1;      //開定時器等待下一個脈沖到來if(temp>12600temp14600biaozhi==0)     //起始碼{biaozhi=1;          //當檢測到起始碼時，下次直接進行入數(shù)據(jù)判斷i=0;j=0;}else         //數(shù)據(jù)判斷區(qū){if((temp  3200)(temp > 1200)) //時間在2.2ms左右的為數(shù)碼0{shuju[i]=shuju[i]1;j++;}elseif((temp  5000)(temp > 3000)) //時間在4ms左右的為為數(shù)碼1{shuju[i]=(shuju[i]1)+1;j++;}elsebiaozhi=0;      //否則為終止碼，清0起始碼標志位，準備下一次按鍵的接收}if(j==16i2)      //數(shù)組遞加,當?shù)谝粋€數(shù)組接收滿后,開始對下一個數(shù)組進行接收{(diào)i++;j=0;}else{if(j==16i==2)     //當接收滿后(共48位),對數(shù)據(jù)輸出{if(shuju[0]==0xeb14)  //為對應(yīng)的某一按鍵值PORTD=0x10;     //相應(yīng)端口輸出if(shuju[0]==0xee11)  //另一鍵值PORTD=0xa0;     //輸出biaozhi=0;     //接收完成,復(fù)位相應(yīng)標志位flag=1;i=0;j=0;}}}    TMR1IF = 0;             // clear Timer0 interrupt flagCCP1IF=0;        //每次必須對CCP1IF位軟件清0}}

注：本程序使用的是TOYO空調(diào)的遙控器，起始碼為13.6ms,0碼為2.2ms,1碼為4ms,停止碼為9ms.共48位數(shù)據(jù),單片機的指令周期為1us,這個程序還沒有加校驗.