series_164.c

单片机双机,多机串口通信 通过编译运行 供大家参考

//series_164.c
#include <stdio.h>
#include <reg51.h>
unsigned char leda[10]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};
unsigned char dd;
sbit clk=P3^1;
sbit sda=P3^0;
void delay(unsigned int n)
{unsigned int i;
 for(i=0;i<n;i++)
  	 ;}
void shift(dd)
{static unsigned char d;
  unsigned char j=0;
    d=dd;
   	while(j<8)
	{if((d&0x80)!=0) sda=1;
       else  sda=0;
	   clk=0;
	   delay(2);
	   clk=1;
	   d<<=1;j++;}
 }
 void main(void)
{unsigned char i; 
  SCON=0x00;
  while(1)
  {for(i=0;i<10;i++)
   {dd=leda[i];shift(dd);
   delay(50000);}}
}