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#include "reg51.h"
#include "intrins.h" //_nop_();延時(shí)函數(shù)用
#define uchar unsigned char
#define uint unsigned int
sbit remoteout=P3^5; // 遙控輸出口
uchar temp,key;
uint m;
uchar code table[]={
0x3f,0x06,0x5b,0x4f,
0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,
0x39,0x5e,0x79,0x71};
/***********延時(shí)化函數(shù)**********/
void delayms(uint xms)
{
uint i,j;
for(i=xms;i>0;i--)
for(j=120;j>0;j--);
}
/***********初始化函數(shù)**********/
clearmen()
{
remoteout=0; //關(guān)遙控輸出
IE=0x00; //IE 單片機(jī)寄存器此句表示單片機(jī)復(fù)位
IP=0x01; //開啟外部中斷 0
TMOD=0x22; //單片機(jī)工作在方式2 即 8 位自動重裝模式
TH1=0xf3; //40KHZ 初值
TL1=0xf3; //當(dāng) TF1 計(jì)數(shù)溢出時(shí)，常數(shù) TH0
里的常數(shù)重裝入 TL1
EA=1; //開總中斷
}
/***********按鍵顯示函數(shù)**********/
void display(uchar num)
{
P0=table[num];
}
/**********發(fā)射函數(shù)************/
sed()
{
ET1=1; //開計(jì)數(shù)器 1 中斷
TR1=1; //開定時(shí)器 1
delayms(3);
ET1=0; //關(guān)
TR1=0;
remoteout=0; //40KHZ 發(fā) 3 毫秒
for(m=key;m>0;m--)
{
delayms(1); //停 1 毫秒
ET1=1; TR1=1; delayms(1);
ET1=0; TR1=0;
remoteout=0; //40KHZ 發(fā) 1 毫秒
}
delayms(10);
}
tx() //這個(gè)子函數(shù)是在發(fā)射脈沖個(gè)數(shù)，
不同的按鍵裝入不同的按鍵個(gè)數(shù)
{
switch(key)
{
case 0:key=key+1;sed();break; case 1:key=key+1;sed();break; case 2:key=key+1;sed();break; case 3:key=key+1;sed();break; case 4:key=key+1;sed();break; case 5:key=key+1;sed();break; case 6:key=key+1;sed();break; case 7:key=key+1;sed();break; case 8:key=key+1;sed();break; case 9:key=key+1;sed();break; case 10:key=key+1;sed();break; case 11:key=key+1;sed();break; case 12:key=key+1;sed();break; case 13:key=key+1;sed();break; case 14:key=key+1;sed();break; case 15:key=key+1;sed();break; default:break;
}
}
/***********按鍵掃描函數(shù)**********/
void matrixkeyscan()
{
P2=0xfe; temp= P2; temp=temp&0xf0; if(temp!=0xf0)
{
delayms(10);
temp= P2; temp=temp&0xf0; if(temp!=0xf0)
{ temp=P2; switch(temp)
{
case 0xee: key=0;break; case 0xde: key=1;break; case 0xbe: key=2;break; case 0x7e: key=3;break;
}
while(temp!=0xf0)
{ temp=P2; temp=temp&0xf0;
}
display(key);
tx();
}
}
P2=0xfd; temp=P2; temp=temp&0xf0; if(temp!=0xf0)
{
delayms(10);
temp=P2; temp=temp&0xf0; if(temp!=0xf0)
{ temp=P2; switch(temp)
{
case 0xed: key=4;break; case 0xdd: key=5;break; case 0xbd: key=6;break; case 0x7d: key=7;break;
}
while(temp!=0xf0)
{
temp=P2;temp=temp&0xf0;
}
display(key);
tx();
}
} P2=0xfb;temp=P2;temp=temp&0xf0; if(temp!=0xf0)
{ delayms(10);temp=P2;temp=temp&0xf0; if(temp!=0xf0)
{ temp=P2; switch(temp)
{
case 0xeb: key=8;break; case 0xdb: key=9;break; case 0xbb: key=10;break; case 0x7b: key=11;break;
}
while(temp!=0xf0)
{
temp=P2;temp=temp&0xf0;
}
display(key);
tx();
}
} P2=0xf7;temp=P2;temp=temp&0xf0; if(temp!=0xf0)
{
delayms(10);
temp=P2;
temp=temp&0xf0;
if(temp!=0xf0)
{
temp=P2;
switch(temp)
{
case 0xe7: key=12;break; case 0xd7: key=13;break; case 0xb7: key=14;break; case 0x77: key=15;break;
}
while(temp!=0xf0)
{ temp=P2; temp=temp&0xf0;
} display(key); tx();
}
}
}
/***********主函數(shù)**********/
void main()
{
clearmen();
while(1)
{
matrixkeyscan();
}
}
/*********40KHZ 發(fā)生器***********/
// 定時(shí)中斷 T1
void time_intt1(void) interrupt 3
{
remoteout=~remoteout; //遙控開關(guān)取反
}
//*********************結(jié)束**************************//
接收端
/*********************************************************************/
/
/*********************************************************************/
// 接收端
/*********************************************************************/
//使用 AT89C52 單片機(jī)，12MHZ 晶振，
//
//#pragma src(E:\remote.asm)
#include "reg51.h"
#include "intrins.h"
#define uchar unsigned char
#define uint unsigned int
#define disout P2 sbit dula=P3^7; uchar code table[]={
0x3f,0x06,0x5b,0x4f,
0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,
0x39,0x5e,0x79,0x71};
sbit sbit sbit
remotein=P3^1; sin=P3^0; K1=P0^0;
// 遙控輸入
//基準(zhǔn)正弦波相位輸入
sbit
K2=P0^1;
sbit
K3=P0^2;
sbit
K4=P0^3;
sbit
K5=P0^4;
sbit
K6=P0^5;
sbit
K7=P0^6;
sbit
K8=P0^7;
uint i,j,m,n,k,s=1;
uint keyvol; //值存放
//
/*********1 毫秒延時(shí)程序**********/
delay1ms(uint t)
{
for(i=0;i<t;i++)
for(j=0;j<120;j++);
}
/***********初始化函數(shù)**********/
clearmen()
{ dula=0; EX0=1;
EA=1; //開總中斷
}
//
/**********函數(shù)************/
loop()
{
switch(disout&0x07)
{
case 0:{s=1;break;}
case 1:{s=2;break;} case 2:{s=3;break;} case 3:{s=4;break;} case 4:{s=5;break;} case 5:{s=6;break;} case 6:{s=7;break;} case 7:{s=8;break;} default:break;}
}
xianshi()
{
dula=1; P1=table[keyvol-2] ; dula=0;
}
//
//
/***********主函數(shù)***************/
main()
{
clearmen(); //初始化
loop();
while(1)
{
while(sin==1); delay1ms(s); K8=0;delay1ms(1);K8=1;
}
}
/************外中斷遙控接收函數(shù)**************/
//外中斷 0
void intt0(void) interrupt 0
{
EX0=0;keyvol=0;
if(remotein==0)
{delay1ms(1);
if(remotein==0)
{while(1)
{while(remotein==0);
keyvol++;k=0;
while(remotein==1){delay1ms(1);k++;if(k>2){ xianshi();goto OOUUTT; xianshi();};}
}
OOUUTT:
switch(keyvol)
{
case 2:{K1=~K1;break;}
case 3:{K2=~K2;break;} case 4:{K3=~K3;break;} case 5:{K4=~K4;break;} case 6:{K5=~K5;break;} case 7:{K6=~K6;break;} case 8:{K7=~K7;break;}
case 9:{if(disout==0x00){disout=0xff;}else{disout--;}loop();break;}
default:break;
}
}
}
EX0=1;
}
//
//*********************結(jié)束**************************//

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