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blogTitle:'51单片机解码红外遥控器原理',
blogAbstract:'
电视遥控器使用的是专用集成发射芯片来实现遥控码的发射，如东芝TC9012，飞利浦SAA3010T等，通常彩电遥控信号的发射，就是将某个按键所对应的控制指令和系统码(由0和1组成的序列)，调制在38KHz的载波上，然后经放大、驱动红外发射管将信号发射出去。不同公司的遥控芯片，采用的遥控码格式也不一样。较普遍的有两种，一种是NEC标准，一种是PHILIPS 标准。
NEC标准：遥控载波的频率为38KHz(占空比为1:3)；当某个按键按下时，系统首先发射一个完整的全码，如果键按下超过108ms仍未松开，接下来发射的代码（连发代码）将仅由起始码（9ms）和结束码（2.5ms）组成。 一个完整的全码=引导码+用户码+用户码+数据码+数据反码。 其中，引导码高电平',
blogTag:'电平,发射,38khz,遥控,全码',
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{list wl as x}{/list}STC的51单片机红外遥控器读码、发射程序，已试成功
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STC的51单片机红外遥控器读码、发射程序，已试成功
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注：我的液晶是带字库的液晶，红外线接头为VS1838B一体化接头，合众之星万能遥控器
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code tab1[]={/*--& 调入了一幅图像：C:/Documents and Settings/zhb/桌面/未标题-1.bmp& --*//*--& 宽度x高度=128x64& 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code tab2[]={/*--& 调入了一幅图像：C:/Documents and Settings/zhb/桌面/2.bmp& --*//*--& 宽度x高度=128x64& --*/0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xF0,0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0xF1,0xF0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0xF9,0xF8,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0xFB,0xF8,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0xFB,0xF8,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0xFB,0xF8,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0xFB,0xF8,0x00,0x00,0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x3D,0xFB,0xF0,0x00,0x07,0xFC,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x3E,0xFB,0xF7,0x00,0x3F,0xF7,0x00,0x00,0x00,0x7F,0xC0,0x00,0x7F,0x80,0x00,0x00,0x7F,0x71,0xEF,0x01,0xFE,0x73,0x80,0x00,0x01,0x80,0x20,0x01,0x80,0x60,0x00,0x00,0x7F,0x00,0x1F,0x01,0x1C,0x73,0x80,0x00,0x02,0x00,0x10,0x02,0x00,0x18,0x00,0x00,0x7F,0x00,0x1F,0x00,0x1C,0x71,0x80,0x00,0x04,0x00,0x0C,0x04,0x00,0x04,0x00,0x00,0x3F,0x1E,0x3F,0x00,0x1C,0x70,0xE0,0x00,0x04,0x00,0x02,0x08,0x00,0x04,0x00,0x00,0x3F,0x7F,0xBF,0x03,0xFF,0xFF,0xF0,0x00,0x09,0xFF,0x01,0x09,0xFE,0x02,0x00,0x01,0xDF,0xFF,0xFF,0x03,0xFF,0xFF,0xF0,0x00,0x16,0x00,0x80,0x96,0x01,0x81,0x00,0x0F,0x06,0xFF,0xFF,0x00,0x1C,0x31,0x80,0x00,0x18,0x00,0x40,0xA8,0x00,0x61,0x00,0x7C,0x01,0xFF,0xFE,0x00,0x1C,0x33,0xC0,0x00,0x30,0x00,0x30,0x70,0x00,0x10,0x81,0xF0,0x03,0xFF,0xF0,0x00,0x1F,0xF3,0x80,0x00,0x30,0x00,0x08,0x60,0x00,0x10,0x8F,0xC0,0x03,0xFF,0xF0,0x00,0x1F,0xB7,0x00,0x00,0x20,0x00,0x04,0x20,0x00,0x08,0x7F,0x00,0x07,0xFF,0xF8,0x01,0xFE,0x3F,0x00,0x00,0x40,0x00,0x02,0x40,0x00,0x07,0xF8,0x00,0x07,0xFF,0xF8,0x03,0xFC,0x3E,0x00,0x00,0x40,0x00,0x02,0x80,0x00,0x0F,0xE0,0x00,0x07,0xFF,0xF8,0x03,0xDC,0x3C,0x30,0x00,0xC0,0x00,0x01,0x80,0x00,0x07,0xC0,0x03,0x1F,0xFF,0xF8,0x01,0x1C,0x7C,0x30,0x00,0xC0,0x00,0x01,0x00,0x00,0x02,0x40,0x07,0x3F,0xF1,0xE0,0x00,0x1C,0xFE,0x30,0x00,0xC0,0x00,0x00,0x00,0x00,0x01,0x40,0x06,0x73,0x00,0x00,0x00,0x1F,0xEF,0x30,0x01,0x40,0x00,0x00,0x00,0x00,0x01,0x40,0x06,0xE1,0xC0,0x00,0x00,0xFF,0x87,0xF0,0x01,0x40,0x00,0x00,0x00,0x00,0x01,0x40,0x0E,0xFF,0xC0,0x00,0x00,0xFE,0x03,0xF0,0x01,0x40,0x00,0x00,0x00,0x00,0x01,0x40,0x0E,0xF7,0xC0,0x00,0x00,0x38,0x00,0xF8,0x01,0x40,0x00,0x00,0x00,0x00,0x01,0x40,0x1E,0xF3,0xC0,0x00,0x00,0x30,0x00,0x00,0x01,0x40,0x00,0x00,0x00,0x00,0x01,0x40,0x1C,0xF9,0xC0,0x00,0x00,0x00,0x00,0x00,0x01,0x20,0x00,0x00,0xE0,0x00,0x01,0x80,0x3F,0xBB,0xC0,0x00,0x00,0x00,0x07,0xC0,0x01,0x20,0x00,0x07,0xC0,0x00,0x01,0x80,0x2F,0x7F,0x80,0x00,0x00,0x01,0xFF,0xE0,0x01,0x10,0x00,0x1E,0x00,0x00,0x01,0x00,0x0C,0xF7,0x00,0x00,0x00,0xFF,0xFF,0x00,0x01,0x10,0x00,0xF8,0x00,0x00,0x01,0x00,0x0D,0xF6,0x00,0x00,0x00,0x39,0xC7,0x80,0x01,0x08,0x03,0xC0,0x00,0x00,0x03,0x00,0x0F,0x9E,0x00,0x00,0x00,0x1C,0xE7,0x00,0x00,0x84,0x1F,0x00,0x00,0x00,0x06,0x00,0x0F,0x1C,0x00,0x00,0x00,0x1C,0xEE,0x00,0x00,0x82,0x78,0x00,0x00,0x00,0x0A,0x00,0x0C,0x3F,0x00,0x00,0x00,0xCC,0x6C,0x60,0x00,0x43,0xE0,0x00,0x00,0x00,0x14,0x00,0x0C,0xF7,0xE0,0x00,0x00,0xFF,0xFF,0xF0,0x00,0x4F,0x80,0x00,0x00,0x00,0x24,0x00,0x0F,0xC1,0xE0,0x00,0x01,0xC3,0x00,0xF0,0x00,0x3C,0x60,0x00,0x00,0x00,0xC8,0x00,0x00,0x00,0x00,0x00,0x01,0x83,0x80,0xC0,0x01,0xF0,0x10,0x00,0x00,0x03,0x10,0x00,0x00,0x00,0x00,0x00,0x03,0x83,0x03,0x80,0x07,0x88,0x0C,0x00,0x00,0x04,0x20,0x00,0x00,0x00,0x00,0x00,0x00,0xFF,0xFF,0xC0,0x3E,0x04,0x02,0x00,0x00,0x08,0x40,0x00,0x00,0x00,0x00,0x00,0x00,0x47,0x02,0x00,0xF0,0x02,0x01,0x00,0x00,0x10,0x80,0x00,0x00,0x07,0x00,0x00,0x00,0x07,0xFF,0x07,0xC0,0x01,0x80,0xC0,0x00,0x23,0x00,0x00,0x01,0xC6,0x60,0x00,0x00,0x0F,0xFF,0x1E,0x00,0x00,0x40,0x20,0x00,0x4C,0x00,0x00,0x1F,0xFF,0xE0,0x00,0x00,0x0F,0x8E,0x78,0x00,0x00,0x30,0x10,0x01,0x90,0x00,0x00,0x02,0x07,0x00,0x00,0x00,0x1D,0xDE,0x40,0x00,0x00,0x08,0x08,0x02,0x20,0x00,0x00,0x02,0x0F,0x80,0x00,0x00,0x38,0xFC,0x00,0x00,0x00,0x04,0x04,0x04,0x40,0x00,0x00,0x02,0x1D,0xC0,0x00,0x00,0x78,0xF8,0x00,0x00,0x00,0x03,0x02,0x08,0x80,0x00,0x00,0x03,0xB8,0xF0,0x00,0x00,0xF1,0xFF,0xC0,0x00,0x00,0x00,0x81,0x09,0x00,0x00,0x00,0x1F,0xFF,0xF0,0x00,0x01,0xCF,0xCF,0xF0,0x00,0x00,0x00,0x41,0x16,0x00,0x00,0x00,0x02,0x33,0xC0,0x00,0x01,0xFE,0x03,0xF0,0x00,0x00,0x00,0x20,0x98,0x00,0x00,0x00,0x02,0x3F,0xC0,0x00,0x00,0x60,0x00,0x00,0x00,0x00,0x00,0x10,0xB0,0x00,0x00,0x00,0x02,0x36,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x08,0x60,0x00,0x00,0x00,0x02,0xF6,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x04,0x20,0x00,0x00,0x00,0x1F,0xFE,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x04,0x40,0x00,0x00,0x00,0x1E,0x36,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x02,0x40,0x00,0x00,0x00,0x18,0x36,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x02,0x80,0x00,0x00,0x00,0x00,0x07,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x00,0x00,0x00,0x00,0x00,0x01,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};void init_lcd (void){&PSB = 1;&wr_lcd(comm,0x30);& /*30---基本指令动作*/&wr_lcd(comm,0x01);& /*清屏，地址指针指向00H*/&wr_lcd(comm,0x06);& /*光标的移动方向*/&wr_lcd(comm,0x0c);& /*开显示，关游标*/}void wr_lcd(uchar dat_comm,uchar content){&chk_busy ();&if(dat_comm)&&& {&&RS = 1;&& //data&&RW = 0;&& //write&&& }&else&&& {&&RS = 0;&& //command&&RW = 0;&& //write&&& }&P0=&& //output data or comm&E = 1;&;&E = 0;}void chk_busy(void){&P0 = 0&RS = 0;&RW = 1;&E = 1;&while(busy==1);&E = 0;}void delay(uint us)&& //delay time{&while(us--);}void delay1(uint ms){&& uint i,j;&& for(i=0;i&i++)&& for(j=0;j&15;j++)&& delay(1);}void img_disp(uchar code *img){&& uchar i,j;&& for(j=0;j&32;j++)&& {&&&& for(i=0;i&8;i++)&&&& {&&&&&& wr_lcd(comm,0x34);&&&&&& wr_lcd(comm,y+j);&&&&&& wr_lcd(comm,x1+i);&&&&&& wr_lcd(comm,0x30);&&&&&& wr_lcd(dat,img[j*16+i*2]);&&&&&& wr_lcd(dat,img[j*16+i*2+1]);&&&& }&& }&& for(j=32;j&64;j++)&& {&&&& for(i=0;i&8;i++)&&&& {&&&&&& wr_lcd(comm,0x34);&&&&&& wr_lcd(comm,y+j-32);&&&&&& wr_lcd(comm,x2+i);&&&&&& wr_lcd(comm,0x30);&&&&&& wr_lcd(dat,img[j*16+i*2]);&&&&&& wr_lcd(dat,img[j*16+i*2+1]);&&&& }&& }&& wr_lcd (comm,0x36);}void lat_disp(uchar data1,uchar data2){&uchar i,j,k,x;&x=x1;&for(k=0;k&2;k++)&{&&for(j=0;j&16;j++)&&{&&&for(i=0;i&8;i++)&&&{&&&&wr_lcd(comm,0x34);&&&&wr_lcd(comm,y+j*2);&&&&wr_lcd(comm,x+i);&&&&wr_lcd(comm,0x30);&&&&wr_lcd(dat,data1);&&&&wr_lcd(dat,data1);&&&}&&&for(i=0;i&8;i++)&&&{&&&&wr_lcd(comm,0x34);&&&&wr_lcd(comm,y+j*2+1);&&&&wr_lcd(comm,x+i);&&&&wr_lcd(comm,0x30);&&&&wr_lcd(dat,data2);&&&&wr_lcd(dat,data2);&&&}&&}&&x=x2;&}&wr_lcd(comm,0x36);}
void main(){&EA=1;&&& //初始化&ET0=1;& //开计数中断0&EX0=1;&& //开外部中断0&TMOD=1; //设置工作方式&IT0=1;&&& //启动计时器&init_lcd();&lat_disp(0x00,0x00);//使屏幕预先显示空白&&& img_disp(tab);&&& delay1(4000);&while(1)&{&&if((a[2]+a[3])==0xff)& //判断接收到数据是否正确&&{&&switch(a[2])&& //将接受到的数据与所建表一一对应&&{&&&&&&&&&&&& case 0x00:&&&{&&&&& &num=0;//数字键0&&&}&&&&&&&&&&& case 0x01:&&&{&&&&& &num=1;//数字键1&&&}&&&&&&&&&&& case 0x02:&&&{&&&&& &num=2;//数字键2&&&}&&&&&&&&&&& case 0x03:&&&{&&&&& &num=3;//数字键3&&&}&&&&&&&&&&& case 0x04:&&&{&&&&& &num=4;//数字键4&&&}&&&&&&&&&&& case 0x05:&&&{&&&&& &num=5;//数字键5&&&}&&&case 0x06:&&&{&&&&& &num=6;//数字键6&&&}&&&case 0x07:&&&{&&&&& &num=7;//数字键7&&&}&&&case 0x08:&&&{&&&&& &num=8;//数字键8&&&}&&&case 0x09:&&&{&&&&& &num=9;//数字键9&&&}&&&case 0x0a:&&&{&&&&& &num=10;//键&--/-&&&&}&&&case 0x0b:&&&{&&&&&& &num=11;//键LG&&&}&&&case 0x0f:&&&{&&&&&&&& num=12;&//AV键&&&}&&&case 0x10:&&&{&&&&& &num=13;//静音键&&&}&&&case 0x15:&&&{&&&&& &num=14;//开关键&&&}&&&case 0x16:&&&{&&&&& &num=15;//选台键&&&}&&&case 0x17:&&&{&&&&& &num=16;//睡眠键&&&}&&&case 0x1a:&&&{&&&&&& &num=17;//音量+&&&}&&&case 0x1b:&&&{&&&& &&num=18;//频道+&&&}&&&case 0x1c:&&&{&&&&& &num=19;//屏显&&&}&&&case 0x1e:&&&{&&&& &&num=20;//音量-&&&}&&&case 0x1f:&&&{&&&& &&num=21;//频道-&&&}&&&case 0x30:&&&{&&&&& &num=22;//小键'-'&& &}&&&case 0x4e:&&&{&&&&&& &num=23;//小键'+'&&&}&&&case 0x51:&&&{&&&&&& &num=24;//画中画&&&}&&&case 0x56:&&&{&&&&&& &num=25;//图像，菜单&&&}&&&case 0x57:&&&{&&&&&& &num=26;//声音&&&}&&&case 0x5a:&&&{&&&&&& lat_disp(0x00,0x00);//使屏幕预先显示空白&&&&&&&&&&&&&&& img_disp(tab1);&&&&delay1(2000);&&&&&& &num=27;//方向上&&&}&&&case 0x5b:&&&{&&&&&& lat_disp(0x00,0x00);//使屏幕预先显示空白&&&&&&&&&&&&&&& img_disp(tab1);&&&&delay1(2000);&&&&&& &num=28;//方向右&&&}&&&case 0x5c:&&&{&&&&&& &num=29;//完成&&&}&&&case 0x5e:&&&{&&&&& &lat_disp(0x00,0x00);//使屏幕预先显示空白&&&&&&&&&&&&&&& img_disp(tab2);&&&&delay1(2000);&&&&&& &num=30;//方向下&&&}&&&case 0x5f:&&&{&& &&&&&& lat_disp(0x00,0x00);//使屏幕预先显示空白&&&&&&&&&&&&&&& img_disp(tab2);&&&&delay1(2000);&&&&&& &num=31;//方向左&&&}&&&&&&&&&&& default:&&}&&}/*&&if(num!=0)&&{&&&&& &&}&&num=0;&&*/&}}void zhb(void) interrupt 0 // 外部中断子程序（译码过程）{&TH0=0;&& //计数器清零&TL0=0;&TR0=1;&& //启动计数器&while(!js)&& //等待低电平结束&{&&delay(5);&&if(TH0&45)& //判断低电平是否高于11.52ms如果高于则跳出等待和中断&&&&}&TR0=0;&if(TH0&30)& //判断低电平是否低于7.68ms如果低于跳出中断&&&TH0=0;&TR0=1;&while(js)&& //等待高电平结束&{&&delay(5);&&if(TH0&28)& //判断高电平是否高于7.168ms如果高于则跳出等待和中断&&&&}&&//至此为起始信号检测&&TR0=0;&TH0=0;&for(i=0;i&4;i++)& //一次锁存红外接收的四个十六进制数到a[4]中&{&&for(j=0;j&8;j++)&&{&&&TR0=1;&&&while(!js)& //判断低电平宽度是否大于3..40ms&&&{&&&&delay(5);&&&&if(TH0&15)&&&&&&&&}&&&TH0=0;&&&while(js) //判断高电平是否大于1.012ms如果高于则为接受到1，否则为0&&&{&&&&delay(5);&&&&if(TH0&15)&&&&&&&&}&&&TR0=0;&&&CY=0;&&&k=(k&&1);&&&if(TH0&4)&&&&k=k+0x80;&&&TH0=0;&&}&&a[i]=k;&}}
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