?? 解碼.c
字號:
#include "At89x51.h"
#include "stdio.h"
#include "stdlib.h"
#include "string.h"
#define JINGZHEN 48
#define TIME0TH ((65536-100*JINGZHEN/12)&0xff00)>>8 //time0,100us,紅外遙控
#define TIME0TL ((65536-100*JINGZHEN/12)&0xff)
#define TIME1TH ((65536-5000*JINGZHEN/12)&0xff00)>>8
#define TIME1TL ((65536-5000*JINGZHEN/12)&0xff)
#define uchar unsigned char
#define uint unsigned int
code uchar BitMsk[]={0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80,};
uint IrCount=0,Show=0,Cont=0;
uchar IRDATBUF[32],s[20];
uchar IrDat[5]={0,0,0,0,0};
uchar IrStart=0,IrDatCount=0;
extern void initLCM( void); //LCD初始化子程序
extern void DisplayListChar(uchar X,uchar Y, unsigned char *DData); //顯示指定坐標的一串字符子函數
void timer1int (void) interrupt 3 using 3{ //定時器1
EA=0;
TH1 = TIME1TH; TL1 = TIME1TL;
Cont++;
if(Cont>10)Show=1;
EA=1;
}
void timer0int (void) interrupt 1 using 1{ //定時器0
uchar i,a,b,c,d;
EA=0;
TH0 = TIME0TH; TL0 = TIME0TL;
if(IrCount>500)IrCount=0;
if(IrCount>300&&IrStart>0){IrStart=0;IrDatCount=0;IrDat[0]=IrDat[1]=IrDat[2]=IrDat[3]=0;IrCount=0;}
if(IrStart==2)
{
IrStart=3;
for(i=0;i<IrDatCount;i++)
{
if(i<32)
{
a=i/8;
b=IRDATBUF[i];
c=IrDat[a];
d=BitMsk[i%8];
if(b>5&&b<14)c|=d;
if(b>16&&b<25)c&=~d;
IrDat[a]=c;
}
}
if(IrDat[2]!=~IrDat[3])
{
IrStart=0;IrDatCount=0;IrDat[0]=IrDat[1]=IrDat[2]=IrDat[3]=0;IrCount=0;
}
EA=1;
return;
}
IrCount++;
EA=1;
}
void int0() interrupt 0 using 0 {
EA=0;
if(IrStart==0)
{
IrStart=1;IrCount=0;TH0 = TIME0TH;TL0 = TIME0TL;
IrDatCount=0;EA=1;
return;
}
if(IrStart==1)
{
if(IrDatCount>0&&IrDatCount<33)
IRDATBUF[IrDatCount-1]=IrCount;
if(IrDatCount>31)
{IrStart=2;TH0 = TIME0TH;TL0 = TIME0TL;EA=1;return;}
if(IrCount>114&&IrCount<133&&IrDatCount==0)
{IrDatCount=1;}else if(IrDatCount>0)IrDatCount++;
}
IrCount=0;TH0 = TIME0TH;TL0 = TIME0TL;
EA=1;
}
main()
{
uchar *a,n;
TMOD |= 0x011;
TH0 = TIME0TH;
TL0 = TIME0TL;
ET0=1;
TR0=1;
ET1=1;
TR1=1;
IT0 = 1; //下降沿
EX0 = 1;
initLCM();
EA=1;
for(;;)
{
if(Show==1)
{
Show=0;
Cont=0;
DisplayListChar(0,1,"Please keys");
a="";
switch (IrDat[3])
{
case 0x12://ON/C
a="ON/C";
break;
case 0x0b://±
a="+/-";
break;
case 0x1a://+
a="+";
break;
case 0x1e://-
a="-";
break;
case 0x0e://÷
a="/";
break;
case 0x1d://MRC
a="MRC";
break;
case 0x1f://M-
a="M-";
break;
case 0x1b://M+
a="M+";
break;
case 0x00://0
if(IrDat[2]==0xff)a="0";
break;
case 0x01://1
a="1";
break;
case 0x02://2
a="2";
break;
case 0x03://3
a="3";
break;
case 0x04://4
a="4";
break;
case 0x05://5
a="5";
break;
case 0x06://6
a="6";
break;
case 0x07://7
a="7";
break;
case 0x08://8
a="8";
break;
case 0x09://9
a="9";
break;
case 0x2A://%
a="%";
break;
case 0x2B://X
a="X";
break;
case 0x2C://.
a=".";
break;
case 0x2D://=
a="=";
break;
case 0x2E://□
a=" ";
break;
}
n=strlen(a);
if(n>0)sprintf(s,"Key is [%s]",a);else sprintf(s,"Not Key ",a);
DisplayListChar(0,0,s);
}
}
}
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