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/ 亲，此程序以经过测试，可直接使用！！！/#include <reg51.h>#define uchar unsigned char#define uint unsigned intvoid delay(uchar x);sbit IRIN = P3^2;uchar IRCOM[4];void main(){ IE = 0x81;TCON = 0x01;IRIN=1;/* 此处可以根据按键码自由编写程序/以下为3*7遥控按键码//（也可以应用与其他类型遥控，本程序只以3*7遥控为例）/ / 0x45 0x46 0x47 // 0x44 0x40 0x43 // 0x07 0x15 0x09 // 0x16 0x19 0x0d // 0x0c 0x18 0x5e // 0x08 0x1c 0x5a // 0x42 0x52 0x4a /例如：while(1){switch(IRCOM[2]){case 0x45: P2=0x7f; break;case 0x44: P2=0xbf; break;case 0x07: P2=0xdf; break;case 0x16: P2=0xef; break;case 0x0c: P2=0xf7; break;case 0x08: P2=0xfb; break;case 0x42: P2=0xfd; break;case 0x52: P2=0xfe; break;case 0x4a: P2=0xff; break;case 0x5a: P2=0x00; break;}} */while(1);} //end main/**********************************************************/ void IR_IN(void) interrupt 0 //外部中断服务程序{unsigned char j,k,N=0;EX0 = 0;delay(15);if (IRIN==1){ EX0 =1;return;}//确认IR信号出现while (!IRIN) //等IR变为高电平，跳过9ms的前导低电平信号。
学习型红外线遥控程序——C51学习型红外线遥控程序——C51/*************晶体为11.0592M,波特率9600bps***************学习型红外线遥控程序*******/#include <AT89X51.H>void Ewen(void);void Ewds(void);void Delay(void);void Irda(void);void Study(void);void Output(unsigned int h);void Comput(unsigned char outdata);void Erase(unsigned char Address);unsigned int Read(unsigned char Address);unsigned char Display(unsigned char inAddress);void Write(unsigned char Address,unsigned int InData);unsigned int Both(unsigned char data1,unsigned char data2);unsigned char data e1 _at_ 0x1A; //分别存放红外线译码后的数据unsigned char data w1 _at_ 0x1B;unsigned char data e2 _at_ 0x1C;unsigned char data w2 _at_ 0x1D;sbit IrInput=P3^2; //红外线输入引脚,可自定义sbit Study1=P3^6; //学习按键,可自定义sbit Led2=P2^5; //接收成功、学习成功指示sbit Led1=P2^6; //空闲指示sbit Dout=P2^3; //at93c16--DOsbit Din=P2^2; //at93c16--DIsbit sk=P2^1; //at93c16--SKsbit cs=P2^0; //at93c16--CS/*********************主程序***************************/ void main(void){unsigned int i;SCON = 0x50; //串口方式1,允许接收TMOD = 0x20; //定时器1定时方式2TH1 = 0xFD; //波特率9600TL1 = 0xFD;IT0 = 1; //INT0下降沿有效EX0 = 1; //开INT0中断;TR1 = 1; //启动定时器P2_7=0; //初始化引脚P1=0xff;EA = 1; //允许CPU中断while(1){for (i=0; i<20000; i++){ Led1=1;if(!Study1) Study();}for (i=0; i<20000; i++){ Led1=0;if(!Study1) Study();}}}/***********************串口输出**********************/ void Comput(unsigned char outdata){SBUF = outdata;while(!TI);TI = 0;}/*******************红外线查询子程序*******************/ void Irda(void){#pragma asmMOV R6,#10SB:MOV R4,#19 ;延时880微秒D1:MOV R5,#19DJNZ R5,$DJNZ R4,D1JB P3.2,EXIT ;延时882微秒后判断P3.2脚是为1DJNZ R6, SB ;在8820微秒内如P3.2为1就退出JNB P3.2, $ ;等待高电平避开9毫秒低电平引导脉冲MOV R4,#10 ;延时4740微秒D2: MOV R5,#218DJNZ R5,$DJNZ R4,D2;延时4.74毫秒避开4.5毫秒的结果码MOV R1,#1AH ;设定1AH为起始RAM区MOV R2,#4 ;接收从1AH到1DH,用于存放操作码和操作反码PP:MOV R3,#8 ;每组数据为8位SS:JNB P3.2,$ ;等待地址码第一位的高电平信号MOV R4,#19 ;延时880微秒D5:MOV R5,#19DJNZ R5,$DJNZ R4,D5;高电平开始后882微秒判断信号的高低电平MOV C,P3.2 ;将P3.2引脚此时的电平状态0或1存入C中JNC TT ;如果为0就跳转到TTMOV R4,#2 ;延时1000微秒D6:MOV R5,#248DJNZ R5,$DJNZ R4,D6;检测到高电平1的话延时1毫秒等待脉冲高电平结束TT:MOV A,@R1 ;将R1中地址的给ARRC A ;将C中的值0或1移入A中的最低位MOV @R1,A ;DJNZ R3,SS ;接收满8位换一个内存INC R1 ;对R1中的值加1，换下一个RAMDJNZ R2,PP ;接收完所有数据EXIT:#pragma endasm}。
#include<reg52.h>sbit DQ=P3^2; //接收头的数据输出引脚sbit FM=P2^3; //蜂鸣器的控制端unsigned char dat[4]; //用于接收4个字节的红外数据unsigned char data_code; //用于保存按键值sbit L0=P1^0;sbit L1=P1^1;sbit L2=P1^2;sbit L3=P1^3;sbit L4=P1^4;sbit L5=P1^5;sbit L6=P1^6;sbit L7=P1^7;bit key_on; //定义一个按键闭合标志位，如果按键被按下了，该位置1/*--毫秒级延时函数，参数为多少则延时多少毫秒--*/void delay_ms(unsigned int t){unsigned int a,b;for(a=0;a<t;a++){for(b=0;b<113;b++){;}}}/*定时器0和中断0的初始化函数*/void init(){TMOD=0x01; //定时器0工作在方式1,为16位的定时器EX0=1; //开中断1IT0=1; //低电平触发中断0EA=1; //开总中断}/*对4个字节的红外遥控数据进行解码操作的函数这4个字节数据保存在了dat[i]的数组中返回值为dat[2],它是我们需要的的按键值如果解码成功，会返回正确的dat[2],如果解码失败那么返回的dat[2]=0 */unsigned char de_code(){unsigned char i,j;unsigned char temp; //用于暂存接收到的数据unsigned int high_time,low_time; //分别用于保存高低电平的时间值for(i=0;i<4;i++) //循环4次才能接收完毕4个字节的数据{for(j=8;j>0;j--) //循环8次才能接收完毕一个字节的数据{temp=temp>>1; //数据整体右移一位，用于接收一个位数据TL0=0x00; //定时器0赋初值0TH0=0x00;TR0=1; //打开定时器0，对低电平时间进行计数while(DQ==0) //如果为低电平就一直while语句中此循环{if(TH0>0x03) //如果低电平时间远超过0.56ms了，说明不是0或者1return dat[2]=0x00; //跳出中断并返回一个值为0的按键码，表明本次解码失败}TR0=0; //关闭定时器0low_time=TH0*256+TL0; //计算低电平时间TL0=0x00; //重新装初值0TH0=0x00;TR0=1; //开定时器0，对高电平时间进行计数while(DQ==1){if(TH0>0x08) //如果高电平时间远超过1.69ms了，说明不是0或者1return dat[2]=0xff; //跳出中断并返回一个值为0的按键码，表明本次解码失败}TR0=0; //关定时器0，计算高电平时间high_time=TH0*256+TL0; //计算高电平时间if((low_time<370)||(low_time>640)) //如果高电平时间不是0.56ms左右（远离这个区间）return dat[2]=0x00; //那么返回0，说明解码失败if((high_time>420)&&(high_time<620)) //如果高电平时间在0.56ms左右（在这个区间即可）temp=temp&0x7f; //说明这个位数据为0,保存数据0else if((high_time>1300)&&(high_time<1800)) //如果高电平时间在1.69ms左右（在这个区间即可）temp=temp|0x80; //说明这个位数据为1,保存数据1else return dat[2]=0x00; //如果高电平时间不是1.69ms左右，那么返回0，说明解码失败}dat[i]=temp; //每解码完成一个字节后，对这个字节进行保存}if(dat[2]==~dat[3]) //解码得到的按键值与按键值的反码取反后进行比较{ //如果一致，则说明解码成功FM=0; //蜂鸣器发声，播报解码成功key_on=1; //置1，表明按键被按下return dat[2]; //返回这个解码成功的按键值}else return dat[2]=0x00; //如果不一致，那么返回0，说明解码失败}void int0_ISR() interrupt 0{unsigned int high_time,low_time; //分别用于保存高低电平的时间值EX0=0; //关闭中断TL0=0x00; //装初值0TH0=0x00;TR0=1; //开定时器0while(DQ==0) //{if(TH0>0x25) //如果低电平时间远超过9ms了，说明不是引导码{EX0=1; //开中断0，准备下次中断return; //跳出此次中断}}TR0=0;low_time=TH0*256+TL0;TL0=0x00;TH0=0x00;TR0=1;while(DQ==1){if(TH0>0x20) //如果高电平时间远超过4.5ms了，说明不是引导码{EX0=1; //开中断0，准备下次中断return; //跳出此次中断}}TR0=0; //关定时器0，计算电平时间high_time=TH0*256+TL0; //计算高电平时间if((low_time>7800)&&(low_time<8800)&&(high_time>3600)&&(high_time<4700))//如果低电平在9ms左右，高电平在4.5ms左右，说明为引导码data_code=de_code(); //对引导码后面的32位数据进行解码接收，并获得按键值EX0=1; //解码接收完成后，开中断delay_ms(30); //延时30ms，让蜂鸣器发声30msFM=1; //停止发声}void main(){init();while(1){if(key_on==1) //如果按键被按下了，那么就执行相应按键的操作{key_on=0; //按键标志位清0switch(data_code){case 0x45: L0=~L0; break; //此按键被按下，就对L0进行控制case 0x46: L1=~L1; break; //此按键被按下，就对L1进行控制case 0x47: L2=~L2; break; //此按键被按下，就对L2进行控制case 0x44: L3=~L3; break; //此按键被按下，就对L3进行控制case 0x40: L4=~L4; break; //此按键被按下，就对L4进行控制case 0x43: L5=~L5; break; //此按键被按下，就对L5进行控制case 0x07: L6=~L6; break; //此按键被按下，就对L6进行控制case 0x15: L7=~L7; break; //此按键被按下，就对L7进行控制default:break;}}}}。
//51单片机做的红外遥控实验（C语言）#include<reg51.h>#define u8 unsigned char#define u16 unsigned int#define ID 0x00 //本遥控器的ID号sbit ir=P3^3;code u8 seg[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90}; //0-9的段码code u8 s[]={1,0x40,0x48,0x04,0x02,0x05,0x54,0x0A,0x1E,0x0E}; u8 buf[4];bit ir_f=0;u8 nu;void delay(u16 x){while(x--);}void show(u16 x){u8 i=0,k=0;u8 s[4];kk:s[i]=x%10;if((x/10)>=1){x=x/10;i++;goto kk;}k=i+1;for(i=0;i<k;i++){P0=seg[s[i]];P2=~(8>>i);delay(300);P0=0XFF;P2=0XFF;}}void timer0_init(){TH0=0;TL0=0;TMOD|=0x01;TR0=0;}u16 low_test(){u16 t;TR0=1;while((ir==0)&&((TH0&0X80)!=0X80));TR0=0;t=TH0;t<<=8;t|=TL0;TH0=0;TL0=0; //t=(TH*256+TL0);//机器周期数return t;}u16 high_test(){u16 t;TR0=1;while((ir==1)&&((TH0&0X80)!=0X80));TR0=0;t=TH0;t<<=8;t|=TL0;TH0=0;TL0=0;return t;}/*u16 time_test(bit x){}*/u8 receive_8bit(){u8 d,i;u16 t;for(i=0;i<8;i++){t=low_test();t=high_test();d>>=1;if((t>=2750)&&(t<=3100)){d|=0x80;}}return d;}void ir_decode(){u16 t;u8 i;if(ir==0)//有遥控信号{t=low_test();//8295-9000us,倍频的是16590-18000if((t>=14500)&&(t<=18000))//检查引导码低电平时间{t=high_test();if((t>=8000)&&(t<=9000))//检查高电平{for(i=0;i<4;i++){buf[i]=receive_8bit();}if(buf[0]==(~buf[1]))//检查系统码是否正确{if(buf[0]==ID){if(buf[2]==(~buf[3])){//具体按键处理ir_f=1; //遥控有效}}}}}}}/*void key(){if(buf[2]==0x40){P1^=(1<<0);}if(buf[2]==0x48){P1^=(1<<1);}}*/void ir_execuse(){if(ir_f==1){switch(buf[2]){case 0x40:P1^=(1<<0);break;case 0x48:P1^=(1<<1);break;case 0x04:P1^=(1<<2);break;case 0x02:P1^=(1<<3);break;case 0x05:P1^=(1<<4);break;case 0x54:P1^=(1<<5);break;case 0x0A:P1^=(1<<6);break;case 0x1E:P1^=(1<<7);break;}ir_f=0;}}void show_d(){u8 j;for(j=0;j<10;j++){if(s[j]==buf[2]){nu=j;break;}}show(nu);}void isr_init(){EA=1;EX1=1;//外部中断，一直看3.3有没有下降沿。
keilc51红外遥控解码程序keil c51红外遥控解码程序本keil c51程序适用uPC1621/uPC1622及兼容的红外遥控器芯片,占用外部中断0和定时器1,以中断方式解码,节省系统资源,以查询方式检测遥控信号是否有效.解码思路:红外线经一体化接受头解码放到后送到单片机的外部中断0,单片机设置外部中断下降沿触发,T0和T1为16位定时器,T0在系统启动后定时5ms.T1在外部中断0启动后开始定时,初值为0,每次在INT0中断后先读T1计数值,并重设初值为0,而且判断T1的计数值,18.unsigned char IR_repeat=0;19.unsigned char IR_ready=0;20.unsigned char IR_poweron=0;21.//bit ir_done=0;22.// time constants23.unsigned int IRtimer=0; // IR timeout24.25.//cpu初始化26.void cpu_init(void)27.{28.TMOD=0X11; // T0 and T1 十六位定时29.TH0=0xee; //fosc=11.0592M,timer=5ms30.TL0=0x00;31.TR0=1; // run timer 0;32.TF0=0;33.34.ET0=1; // enable tmr 0 overflow interrupt35.IT0=1; // int0 edge sensitive36.EX0=1; // enable "int0"37.EA=1; // global interupt enable38.}39.40.//T0中断41.void tmrint() interrupt 142.{43.TH0=0xee;44.TL0=0x00;45.if (IRtimer) //IR接收超时46.--IRtimer; //47.else48.{49.IRstate=IR_idle;50.// IR_poweron=0;51.}52.}53.54.//Fosc=11.0592MHz55.#define msec_12p5 0x2d0056.#define msec_15 0x360057.#define msec_9 0x206658.//#define msec_9 0x106659.#define msec_2p5 0x90060.#define msec_0p9 0x33d61.#define msec_1p68 0x61062.63.64.//void IRint() interrupt 0(void)65.66.//When the IR receive pin goes low and interrupt is ge nerated67.// IR is collected by starting timer 2 in the first falling edge of the pin68.// then on every other falling edge, the timer value i s saved and the timer restarted .69.// the captured time is then used to get the IR data70.// a "start of data" is 13.5Msec,a "1" is 2.25Msec,a "0" i s 1.12 msec and a "repeat" is 11.25msec.71.// the counter increments at 1.085 Usec72.// I allow a fairly large tolerance to time jitter but there are no false triggers seen.73.74.void IRint() interrupt 075.{76.static unsigned char bits;77.unsigned short time;78.switch(IRstate)79.{80.case IR_idle:81.TL1=0;82.TH1=0;83.TR1=1;84.IRstate=IR_waitstart;85.IRtimer=26;86.break;87.case IR_waitstart: //P2_4=!P2_4;88.TR1=0;89.time=TH1;90.time =(time <<8)+TL1;;91.TL1=0;92.TH1=0;93.TR1=1;94.if ((time > msec_12p5)&&(time < msec_15)) // greate r than 12.5Msec & less than 15 msec = start code95.{96.IRaddr=0;97._IRaddr=0;98.IRdata=0;99._IRdata=0;100.bits=1;101.IRstate=IR_getaddr;102.}103.else if ((time > msec_9)&&(time < msec_12p5))// les s than 12.5Msec and greater than 9 msec =Repeat code 104.{105.IR_repeat=2;106.IRstate=IR_idle;107.}108.else109.{ // to short, bad data just go to idle110.IRstate=IR_idle;111.}112.break;113.case IR_getaddr: // P2_4=!P2_4;114.TR1=0;115.time=TH1;116.time =(time <<8)+TL1;;117.TL1=0;118.TH1=0;119.TR1=1;120.if ((time>msec_2p5)||(time<msec_0p9))// if > 2.5mse c or shorter than .9Msec bad data , go to idle121.{122.IRstate=IR_idle;123.break;124.}125.if (time>msec_1p68)// greater than 1.68Msec is a 1126.{127.IRaddr|= bits;128.}129.bits=bits<<1;130.if (!bits)131.{132.IRstate=IR_getaddrinv;133.bits=1;134.}135.break;136.case IR_getaddrinv: //P2_4=!P2_4;137.TR1=0;138.time=TH1;139.time =(time <<8)+TL1;;140.TL1=0;141.TH1=0;142.TR1=1;143.if ((time>msec_2p5)||(time<msec_0p9))// if > 2.5mse c or shorter than .9Msec bad data , go to idle144.{145.IRstate=IR_idle;146.break;147.}148.if (time>msec_1p68)// greater than 1.68Msec is a 1 149.{150._IRaddr|= bits;151.}152.bits=bits<<1;153.if (!bits)154.{155.IRstate=IR_getdata;;156.bits=1;157.}158.break;159.case IR_getdata:160.TR1=0;161.time=TH1;162.time =(time <<8)+TL1;;163.TL1=0;164.TH1=0;165.TR1=1;166.if ((time>msec_2p5)||(time<msec_0p9))// if > 2.5mse c or shorter than .9Msec bad data , go to idle167.{168.IRstate=IR_idle;169.break;170.}171.if (time>msec_1p68)// greater than 1.68Msec is a 1172.{173.IRdata|= bits;174.}175.bits=bits<<1;176.if (!bits)177.{178.IRstate=IR_getdatainv;179.bits=1;180.}181.break;182.case IR_getdatainv:183.TR1=0;184.time=TH1;185.time =(time <<8)+TL1;;186.TL1=0;187.TH1=0;188.TR1=1;189.if ((time>msec_2p5)||(time<msec_0p9)) // if > 2.5mse c or shorter than .9Msec bad data , go to idle190.{191.IRstate=IR_idle;192.break;193.}194.if (time>msec_1p68)// greater than 1.68Msec is a 1 195.{196._IRdata|= bits;197.}198.bits=bits<<1;199.if (!bits) // we have it all , now we make sure it i s a NEC code from the CHS IR transmitter200.{ // make sure address,~address are correc t , data ,~data are correct and address is 0.201.IR_ready=((IRaddr^_IRaddr)==0xff)&&((IRdata^_IRda ta)==0xff)&&(IRaddr==0);202.if(IR_ready)203.{204.IRstate=IR_idle;205.}206.}207.break;208.default:209.IRstate=IR_idle;210.break;211.}212.}213.214.void main(void) 215.{216.cpu_init();217.while(1)218.{219.if(IR_ready)220.{221.IR_ready=0;222.switch(IRdata) 223.{224.case 0x45: //1 225.//your code226.break;227.case 0x44: //3 228.//your code229.break;230.case 0x43: //4 231.//your code232.break;233.case 0x08: //prev 234.//your code235.break;236.case 0x5a: //next 237.//your code238.break;239.default:240.break;241.&n bsp; } 242.}243.}。
