qgsky.c

红外遥控解码

	#include "redkey.h"
	#include "main.h" 
	#define uchar unsigned char

	sbit line=P3^2;
	sbit COM=P3^3;
	sbit YC=P3^4;
	sbit ZHT=P3^5;
	uchar k,KeyValue;        
	uchar dat[4]={0,0,0,0};
	
	void main(void)
	{
	
		line=1;
		TMOD=0x01;
		EA=1;
		EX0=1;
		YC=1;
		ZHT=1;
		COM=1;
		P1=0xFF;
		while(1);
	
	}
	
	void int0(void) interrupt 0
	{ uchar i,j;
	  EX0=0;
	  i=13;
	  while(--i)
	  {
		TH0=0xfc;
	    TL0=0x90;
		TR0=1;
		while(!TF0); //延时8.8毫秒
		TF0=0;
		TR0=0;
	    if(line) {EX0=1; return ;}
	  }
	
	 while(!line); 
	
	//----------------------------------------
	   	TH0=0xff;
	    TL0=0x06;
		TR0=1;
		while(!TF0);
		TF0=0;
		TR0=0;	  //延时2.5毫秒
		if(!line){EX0=1;return;}
		while(line);
	
	
	 for(i=0;i<4;i++)
	 {
	  for(j=0;j<8;j++)
	   {
		 while(!line);
	   	 dat[i]>>=1;
	
		 TH0=0xfc;
	     TL0=0xb8;
		 TR0=1;
		  while(!TF0);
		  TR0=0;
		  TF0=0; //延时860us	
				
		  if(line) 
		   {
		     dat[i]|=0x80;
		     while(line);
		    }
		}
	  }	
	
	
	  KeyValue = dat[2];
	
	  switch(KeyValue)
		 {
	
				
			case  SELECT_ZERO_KEY_G:
				
				{ P1=0x00;} break;
				
			case  SELECT_ONE_KEY_G:
				
				{ P1=0x01;} break;
				
			case  SELECT_TWO_KEY_G:
				
				{ P1=0x02;} break;
				
			case  SELECT_THREE_KEY_G:
				
				{ P1=0x03;} break;
				
			case  SELECT_FOUR_KEY_G:
	
				{ P1=0x04;} break;
				
			case  SELECT_FIVE_KEY_G:
				
				{ P1=0x05;} break;
				
			case  SELECT_SIX_KEY_G:
				
				{ P1=0x06;} break;
				
			case  SELECT_SEVEN_KEY_G:
				
				{ P1=0x07;} break;
				
			case  SELECT_EIGHT_KEY_G:
				
				{ P1=0x08;} break;
				
			case  SELECT_NINE_KEY_G:
	
				{ P1=0x09;} break;
				
			case  SELECT_A_KEY_G:
				
				{ P1=0x0A;} break;
				
			case  SELECT_B_KEY_G:
				
				{ P1=0x0B;} break;
				
			case  SELECT_C_KEY_G:
				
				{ P1=0x0C;} break;
				
			case  SELECT_D_KEY_G:
				
				{ P1=0x0D;} break;
				
			case  SELECT_E_KEY_G:
				
				{ P1=0x0E;} break;
				
			case  SELECT_F_KEY_G:
				
				{ P1=0x0F;} break;
				
			case  SELECT_YC_KEY_G:
				
				{ YC=~YC;} break;
				
			case  SELECT_BUF_KEY_G:
				
				{ ZHT=~ZHT;} break;
				
			case  SELECT_COM_KEY_G:
				
				{ COM=~COM;} break;
				
				
			case  SELECT_RESTART_KEY_G:
				
				{
				  YC=1;
			      ZHT=1;
				  COM=1;
				  P1=0xFF;
				} break;
				
			}
	
	   EX0=1;
	   return;
	}