主機1：
#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
int flag1=0;
//sbit dula=P2^6;
//sbit wela=P2^7;
uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
void delayms(uint xms)
{
uint i,j;
for(i=xms;i>0;i--)
for(j=110;j>0;j--);
}
void display(uchar num)
{
P0=table[num];
delayms(1000);
//wela=1;
//wela=0;
}
void send1(uchar key_num)
{
ES=0;
SBUF=key_num;
while(!TI);
TI=0;
}
void matrixkeyscan1()
{
uchar temp,key,value1;
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;
}
send1(key);
}
}
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;
}
send1(key);
}
}
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;
}
send1(key);
}
}
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;
}
send1(key);
}
}
if(0<key<=15&&value1==0xee)
ES=0;
else ES=1;
}
void main()
{
TMOD=0x20;
TH1=0xfd;
TL1=0xfd;
TR1=1;
SM0=0;
SM1=1;
REN=1;
EA=1;
ES=1;
P0=0x00;
//wela=1;
//wela=0;
while(1)
{
matrixkeyscan1();
}
}
void ser() interrupt 4
{
uchar a;
RI=0;
a=SBUF;
display(a);
}
主機2：
#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
uchar code table0[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
int flag=0;
void delayms(uint xms)
{
uint i,j;
for(i=xms;i>0;i--)
for(j=110;j>0;j--);
}
void display0(uchar num)
{
P0=table0[num];
delayms(1000);
//wela=1;
//wela=0;
}
void send(uchar key_num)
{
ES=0;
SBUF=key_num;
while(!TI);
TI=0;;
}
void matrixkeyscan()
{
uchar temp,key,value;
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;
}
send(key);
}
}
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;
}
send(key);
}
}
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;
}
send(key);
}
}
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;
}
send(key);
}
}
if(0<key<=15&&value==0xee)
ES=0;
else ES=1;
}
void main()
{
TMOD=0x20;
TH1=0xfd;
TL1=0xfd;
TR1=1;
SM0=0;
SM1=1;
REN=1;
EA=1;
ES=1;
P0=0x00;
while(1)
{
matrixkeyscan();
}
}
void ser0() interrupt 4
{
uchar a;
RI=0;
a=SBUF;
display0(a);
}
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