ad0831.c.bak

QH_MCU_V1.1单片机C源码. 内含实验程序 这是修改版.

#include <REG51.H>
#include <sys.h>
#include <intrins.h>

const	unsigned char	LedCode[]={0xBF,0x86,0xDB,0xCF,0xE6,0xED,0xFD,0x87,0xFF,0xEF,0xF7,0xFC,0xB9,0XDE,0xF9,0xF1};
const	unsigned char	Sel[]={0x80,0x81,0x82,0x83};

sbit  CS = P3^4;
sbit  CK = P3^5;
sbit  Do = P3^6;
bit read_flag;
uchar data1;
void delay()
{
    uchar i = 0;
	uchar j = 0;
 // for (j=0;j<255;j++)
   {
    for (i=0; i<250; i++)
	  ;
   }
}



uchar  getdata()
  {
     uchar i,databuf=0;
	 CS=1;
	 CS=0;
	 CK=0;
	 delay();
	 CK=1;
	 delay();
	
	 for(i=0;i<8;i++)
      {
	    CK=0;
		delay();
	    CK=1;
	    delay();
		databuf=databuf<<1;
        databuf=(databuf|((uchar)(Do)));
      }

	  return(databuf);
   }



 void ISRSER() interrupt 4 using 3
  {
    uchar a;
	 
  if (RI)
    {
	    
       RI=0;
	   a=SBUF;
      if (a==0xac)
	   read_flag=1;
	
    }


  }

void sendchar (uchar c)
 {
     
        SBUF=c;
		while(TI==0);
		TI=0;

 }





  

void main()
{
    delay();
	SCON|=0x50;  /* mode 1: 8-bit UART, enable receiver */ 
	TMOD|=0x20; /* timer 1 mode 2: 8-Bit reload */ 
	PCON|=0x80; // baud x2
	TH1=0xf4;   //串口初始化 0xfd=19200,0xfa=9600,0xf4=4800,0xe8=2400,0xd0=1200  
	TR1=1;
	EA=1;
	ES=1;  // Turn on Series Interrupte;

   



	while(1)
	{



	    
	
	     

	   if (read_flag)
	       {
	        sendchar (getdata());
			read_flag=0;
             P0=0xFF;
             P2=Sel[3];
		   }

	}
}