chuan_send.c

学习89C51/S51/S52/C52好的基础程序

#include<reg52.h>
#include<intrins.h>
#define uchar unsigned char
#define uint unsigned int
#define shuju P0
#define bus P1

void delayms(int i)		   //延时函数
	{
	int j;
	for(j=0;j<i;j++);
	}
void chushi()
	{
	  TMOD=0x20;
	  SCON=0x50;
	  TH1=0xfA;
	  TL1=0xfA;
	  PCON=0x80;
	  TR1=1;
	  EA=1;
	  ES=0;
	  RI=0;
	  TI=0;
	}
void display(uchar i)
	{
	SBUF=i;
	while(!TI);
	TI=0;
	}
void jianpan()
{  
   uchar a;
   uchar k;
   bus=0xff;
   bus=0xef;     
   delayms(6000);
   a=bus;
   a=a&0x0f;
   if(a!=0x0f)
	  {
	   delayms(2000);
	    if(a!=0x0f)
		   {
		     switch(a)
			    {
			     case 0x0e:
			          k=0x01;	
			          break;
			     case 0x0d:
			          k=0x02;	   
			          break;
			     case 0x0b:
			          k=0x03;	         
			          break;
			     case 0x07:
			          k=0x04;	       
			          break;
			    }
		      display(k);
		     while(a!=0x0f)
			     {
				  bus=0x0f;
				  delayms(2000);
				  a=bus;	  
			     }
		   }
	   }  
    bus=0xdf;       
    delayms(6000);
    a=bus;
    a=a&0x0f;
    if(a!=0x0f)
    {
     delayms(2000);
     if(a!=0x0f)
	     {
	     switch(a)
		     {
		      case 0x0e:
		           k=0x05;
		           break; 
		      case 0x0d:
		           k=0x06;
		           break;
		      case 0x0b:
		           k=0x07;
		           shuju=0x07;
		           break;
		      case 0x07:
		           k=0x08;
		           break;
		     }
	     display(k);
	     while(a!=0x0f)
		      {
		       bus=0x0f;
			   delayms(2000);
		       a=bus;	   
		      }
	     }  
     }     
    bus=0xbf;
	delayms(6000);
    a=bus;
    a=a&0x0f;
    if(a!=0x0f)
	    {
	     delayms(2000);
	     if(a!=0x0f)
		     {
		     switch(a)
			     {
			      case 0x0e:
			           k=0x09;
			          
			           break; 
			      case 0x0d:
			           k=0x0a;
			           
			           break;
			      case 0x0b:
			          k=0x0b;
			           break;
			      case 0x07:
			           k=0x0c;
			           break;
			     }
		     display(k);
		     while(a!=0x0f)
			      {
			      bus=0x0f;
				   delayms(2000);
			       a=bus;	 
			      }
		     }  
	     }     
     bus=0x7f;
	 delayms(6000);
    a=bus;
    a=a&0x0f;
    if(a!=0x0f)
    {
     delayms(2000);
     if(a!=0x0f)
	     {
	     switch(a)
		     {
		      case 0x0e:
		           k=0x0d;
		           break; 
		      case 0x0d:
		           k=0x0e;
		           break;
		      case 0x0b:
		           k=0x0f;
		           break;
		      case 0x07:
		           k=0x00;
		           break;
		     }
	     display(k);
	     while(a!=0x0f)
		      {
		       bus=0x0f;
			   delayms(2000);
		       a=bus;	   
		      }
	     }  
     }     
 } 
void main()
	{
	chushi();
	while(1)
		{
		jianpan();
		}
	}