cckk.c

51单片机串口调试程序

			#include<REG51.H>
const char num[10] = {0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};

sbit lcd = P2^7;
sbit lbd = P3^3;
sbit ldd = P3^4;
sbit led = P3^5;
sbit lfd = P3^6;
unsigned int tmp=0x00;
   void Delay(unsigned int count)		   //count*1ms延时程序
{
  unsigned int i,j;

  for (i=0;i<count;i++)
     for (j=0;j<120;j++);
}
main()
{
	int i,j,qiduan;
 IE=0x13;	              //定时器初始化,定时器0.05ms产生一次定时中断，定时器1作为串口波特率2400发生器；串口初始化
 PCON=0x80;
 SCON=0x50;
 TCON=0x00;
 TMOD=0x21;	     
 TH1=0xe5;        
 TL1=0xe5;
 TR1=1;
 EA=1;
 ES=1;




 qiduan = 0xef;
 P2 = qiduan;
					

 while(1)
 { qiduan = 0x7f;
  P2 = qiduan;
  i=tmp%10;
  P0=num[i];
  Delay(10);
  qiduan = 0xbf;
  P2 = qiduan;
    j=tmp/10;
  P0=num[j];
    Delay(10);
 }
}
void rut(void) interrupt 4
{ 
 if(RI==1)
 { 
  tmp=SBUF;



  RI=0; 

  }
}