shuangji.c

文件中包括：串口通讯程序

  #include <reg51.h>
  #define uchar unsigned char
   
  uchar data tab[]={0x88,0x83,0xc6,0xa1,0xf9,0xa4,0xb0,0x99}; //  ABCD和1234的马表

//*******************1ms延时函数*****************//
   delay1ms(int t)
   {  int i,j;
      for(i=0;i<t;i++)
	  for(j=0;j<120;j++);
	}
 //**************主函数*********************// 
  main()
  {    uchar ba;  
     uchar i=0;
    TMOD=0X20;
	TH1=0Xfd;
	TL1=0Xfd;
	PCON=0;
	TR1=1;
	SCON=0X50;
   P2=0Xaa;
   delay1ms(1000);
   P2=0x55;
   delay1ms(1000);
   P2=0Xaa;
   delay1ms(1000);
   	ba=0x00;
    while(1)
	{
	 
   	SBUF=ba;	
    while(~TI);
    TI=0;
	 ba++;
	P2=~P2;
	delay1ms(1000);

	 }
   }