單片機雙機通信源碼

ID:225607 · 發表于 2017-8-7 21:48

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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單片機雙機通信源碼