12T single-chip microcomputer sending infrared level sample program

GND of the single-chip microcomputer is connected to the infrared receiving head

TTL output pin of the IO Infrared receiver Head of MCU

/*89c52 @12m */#include  <reg51.h> sfr auxr  = 0x8e; static  bit RealOutput;                     //static unsigned int count;    of infrared emitter tube      //Delay Counter static unsigned int endcount;      //terminating delay Count static unsigned char flag;        // Infrared Send flag sbit send_isr=p2^0;sbit runled  =p2^1;char iraddr1;  // The first byte of a 16-bit address char iraddr2;  //the second byte of a 16-bit address unsigned char code key_0=0x10;unsigned  char code key_1=0x11;unsigned char code key_2=0x12;unsigned char code  key_3=0x13;unsigned char code key_4=0x14;unsigned char code key_5=0x15; Unsigned char code key_6=0x16;uNsigned char code key_7=0x17;unsigned char code key_8=0x18;unsigned char  code key_9=0x19;unsigned char code key_up=0x19;unsigned char code key _down=0x19;unsigned char code key_left=0x19;unsigned char code key_right=0x19; unsigned char code key_menu=0x19;unsigned char code key_ok=0x19;unsigned  Char code key_back=0x1c; void delay (Unsigned int a) {  //[email  protected]  1ms    unsigned int i;    while  (  --a != 0 )         for  (i=0;i<=20;i++);}  void sendcode (unsigned char code) { unsigned char irdata,i; irdata= Code;              for (i=0;i<8;i++)   {     endcount=10;     flag=1;     count=0;      do{}while (Count<endcount);      if (irdata%2)  {endcount = 41;}      else{endcount=15;}      flag=0;     count=0;     do{} while (Count<endcount);     irdata=irdata>>1;  }}void  Sendirdata (Char keycode) {  char usercode1=0x11;  char usercode2=0x11;     char irdata=usercode1;  endcount=223;                 //sends a 9ms starting code,.   flag=1;  count= 0;  do{}while (Count<endcount);endcount=117;                 //send 4.5ms result codes   flag=0;  count=0;  do{}while (Count<endcount);   sendcode (USERCODE1); Sendcode (USERCODE2); Sendcode (KeyCode); Sendcode (~keycode);   endcount=100;  flag=1;  count=0;  do{}while (count <endcount);   flag=0;}        void main (void)  {  count = 0;   flag = 0;  RealOutput = 0;  Send_ISR = 0;   ea = 1;         //Allow CPU Interrupt    tmod =  0x11;    //Set timers 0 and 1 for 16-bit mode 1   et0 = 1;         //Timer 0 Interrupt Allow     th0 = 0xff;   tl0  = 0xe6;       //set time value of 0 is 38k  interrupt every 26us      tr0 = 1;          //OpenStart Count  while (1) {      sendirdata (KEY_0);       Delay (      sendirdata);       delay (key_1); (//runled=!); Runled;//      delay (+);   }}  void timeint (void)  interrupt 1 {   th0=0xff;   tl0=0xe6; //Set Value is 38k  That is, every 26us interrupt once   count++;//  if  (flag)  {realoutput=~realoutput;}   if  (flag)  {realoutput=0;}   else{realoutput = 1;}   send_isr = realoutput;}

Compile

Rebuild target ' target 1 ' assembling startup.a51...compiling SEND_ISR. C...linking ... Program size:data=17.1 xdata=0 code=337creating hex file from "Send_isr" ... "Send_isr"-0 Error (s), 0 Warning (s).

12T single-chip microcomputer sending infrared level sample program