#include <AT89X51.h>
static bit OP; //紅外發(fā)射管的亮滅
static unsigned int count; //延時計數(shù)器
static unsigned int endcount; //終止延時計數(shù)
static unsigned char Flag; //紅外發(fā)送標志
char iraddr1; //十六位地址的第一個字節(jié)
char iraddr2; //十六位地址的第二個字節(jié)
void SendIRdata(char p_irdata);
void delay();
char getkey()
{
P1=0xfe;P3_6=P3_7=1;P3_3=1;
if(!P1_4)return 1; //ON
if(!P1_5)return 2; //7
if(!P1_6)return 3; //8
if(!P1_7)return 4; //9
if(!P3_6)return 5; //X
if(!P3_7)return 6; //÷
P1=0xfd;
if(!P1_4)return 11; //+-
if(!P1_5)return 12; //4
if(!P1_6)return 13; //5
if(!P1_7)return 14; //6
if(!P3_6)return 15; //-
if(!P3_7)return 16; //MRC
P1=0xfb;
if(!P1_4)return 21; //%
if(!P1_5)return 22; //1
if(!P1_6)return 23; //2
if(!P1_7)return 24; //3
if(!P3_6)return 25; //+
if(!P3_7)return 26; //M-
P1=0xf7;
if(!P1_4)return 31; //□
if(!P1_5)return 32; //0
if(!P1_6)return 33; //.
if(!P1_7)return 34; //=
if(!P3_6)return 35; //+
if(!P3_7)return 36; //M+
P1=0xfF;P3_3=0;
if(!P1_4)return 41; //
if(!P1_5)return 42; //
if(!P1_6)return 43; //
if(!P1_7)return 44; //
if(!P3_6)return 45; //
if(!P3_7)return 46; //
return 0;
}
void main(void)
{
char key;
count = 0;
Flag = 0;
OP = 0;
P3_4 = 1;
EA = 1; //允許CPU中斷
TMOD = 0x11; //設(shè)定時器0和1為16位模式1
ET0 = 1; //定時器0中斷允許
P1=0xff;
TH0 = 0xFF;
TL0 = 0xE6; //設(shè)定時值0為38K 也就是每隔26us中斷一次
TR0 = 1;//開始計數(shù)
iraddr1=0xff;
iraddr2=0xff;
do{
key=getkey();
if(key==1)SendIRdata(0x12);//set
if(key==11)SendIRdata(0x0b);//exit
if(key==25||key==35)SendIRdata(0x1a);//+
if(key==15)SendIRdata(0x1e);//-
if(key==6)SendIRdata(0x0e);//↑ ÷
if(key==16)SendIRdata(0x1d);//↓ MRC
if(key==26)SendIRdata(0x1f);//← M-
if(key==36)SendIRdata(0x1b);//→ M+
if(key==32)SendIRdata(0x00);//0
if(key==22)SendIRdata(0x01);//1
if(key==23)SendIRdata(0x02);//2
if(key==24)SendIRdata(0x03);//3
if(key==12)SendIRdata(0x04);//4
if(key==13)SendIRdata(0x05);//5
if(key==14)SendIRdata(0x06);//6
if(key==2)SendIRdata(0x07);//7
if(key==3)SendIRdata(0x08);//8
if(key==4)SendIRdata(0x09);//9
if(key==21)SendIRdata(0x2A);//%
if(key==5)SendIRdata(0x2B);//X
if(key==33)SendIRdata(0x2C);//.
if(key==34)SendIRdata(0x2D);//=
if(key==31)SendIRdata(0x2E);//□
if(key==41)SendIRdata(0x2F);//
if(key==42)SendIRdata(0x30);//
if(key==43)SendIRdata(0x31);//
if(key==44)SendIRdata(0x32);//
if(key==45)SendIRdata(0x33);//
if(key==46)SendIRdata(0x34);//
}while(1);
}
//定時器0中斷處理
void timeint(void) interrupt 1
{
TH0=0xFF;
TL0=0xE6; //設(shè)定時值為38K 也就是每隔26us中斷一次
count++;
}
void SendIRdata(char p_irdata)
{
int i;
char irdata=p_irdata;
//發(fā)送9ms的起始碼
endcount=223;
Flag=1;
count=0;
P3_4=0;
do{}while(count<endcount);
//發(fā)送4.5ms的結(jié)果碼
endcount=117;
Flag=0;
count=0;
P3_4=1;
do{}while(count<endcount);
//發(fā)送十六位地址的前八位
irdata=iraddr1;
for(i=0;i<8;i++)
{
//先發(fā)送0.56ms的38KHZ紅外波（即編碼中0.56ms的低電平）
endcount=10;
Flag=1;
count=0;
P3_4=0;
do{}while(count<endcount);
//停止發(fā)送紅外信號（即編碼中的高電平）
if(irdata-(irdata/2)*2) //判斷二進制數(shù)個位為1還是0
{
endcount=15; //1為寬的高電平
}
else
{
endcount=41; //0為窄的高電平
}
Flag=0;
count=0;
P3_4=1;
do{}while(count<endcount);
irdata=irdata>>1;
}
//發(fā)送十六位地址的后八位
irdata=iraddr2;
for(i=0;i<8;i++)
{
endcount=10;
Flag=1;
count=0;
P3_4=0;
do{}while(count<endcount);
if(irdata-(irdata/2)*2)
{
endcount=15;
}
else
{
endcount=41;
}
Flag=0;
count=0;
P3_4=1;
do{}while(count<endcount);
irdata=irdata>>1;
}
//發(fā)送八位數(shù)據(jù)
irdata=~p_irdata;
for(i=0;i<8;i++)
{
endcount=10;
Flag=1;
count=0;
P3_4=0;
do{}while(count<endcount);
if(irdata-(irdata/2)*2)
{
endcount=15;
}
else
{
endcount=41;
}
Flag=0;
count=0;
P3_4=1;
do{}while(count<endcount);
irdata=irdata>>1;
}
//發(fā)送八位數(shù)據(jù)的反碼
irdata=p_irdata;
for(i=0;i<8;i++)
{
endcount=10;
Flag=1;
count=0;
P3_4=0;
do{}while(count<endcount);
if(irdata-(irdata/2)*2)
{
endcount=15;
}
else
{
endcount=41;
}
Flag=0;
count=0;
P3_4=1;
do{}while(count<endcount);
irdata=irdata>>1;
}
endcount=10;
Flag=1;
count=0;
P3_4=0;
do{}while(count<endcount);
P3_4=1;
Flag=0;
}
void delay()
{
int i,j;
for(i=0;i<400;i++)
{
for(j=0;j<100;j++)
{
}
}
}
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