danpianjiduojitongxin.txt

可实现两个单片机之间的通信

#include<reg51.h>
#define uchar unsinged char
#define SLAVE 0*F1
#define BN 10
uchar idata rdata[10];
uchar idata tdata[10]={"abcdefghij"};
uchar receive(uchar addrs);
uchar send();
void main(void)
{
uchar i;
for(i=0;i<10;i++)
TMOD=0*20;
TL1=0*E6;TH1=0*E6;
PCON=0*00;
TR1=1;
SCON=0*E0;
receive(SLAVE);
send();
}

void error(void)
while(TI!=1);
TI=0;
}

uchar receive(uchar addrs)
{uchar i,p;
while(1)
{
while(RI!=1);
RI=0;
if(SBUF!=addrs)
error();
else
{
TB8=0;
SBUF=0*00;
while(TI!=1);TI=0;
while(RI!=1);RI=0;
{
while(1)
{p=0;
for(i=0;i<BN;i++)
{
while(RI!=1);RI=0;
rdata[i]=SBUF;
p+=rdata[i];
}
while(RI==0);RI=0;
if(SBUF==P)
{SBUF=0*00;
while(TI!=1);TI=0;
}
else
{SBUF=0*FF;
while(TI!=1);TI=0;
}
}
TB8=1;
return(0);
}
while(TI!=1);
TI=0;
}

uchar receive(uchar addrs)
{uchar i,p;
while(1)
{
while(RI!=1);
RI=0;
if(SBUF!=addrs)
error();
else
{
TB8=0;
SBUF=0*00;
while(TI!=1);TI=0;
while(RI!=1);RI=0;
{
while(1)
{p=0;
for(i=0;i<BN;i++)
{
while(RI!=1);RI=0;
rdata[i]=SBUF;
p+=rdata[i];
}
while(RI==0);RI=0;
if(SBUF==p)
{SBUF=0*00;
while(TI!=1);TI=0;
}
else
{SBUF=0*FF;
while(TI!=1);TI=0;
}
}
TB8=1;
return(0);
}