max5455.c

从MAX公司申请的MAX5455

/***********************************
* Data  :2007.4.10
* Author: Tianqin
* Description: The soft is used for 
*      testing the MAX5455 device
************************************/
#include <REG51.H>
#include <intrins.H>
#define uchar unsigned char 

sbit CS1 = P2^0;
sbit UD1 = P2^1;
sbit INC1= P2^2;

sbit Key1=P3^4;
sbit Key2=P3^5;


void Delay_x10ms(unsigned char DelayTime)   
 {
   unsigned char i,j,k;
   for(i=0;i<DelayTime;i++)
     for(j=0;j<10;j++)
        for(k=0;k<120;k++) {;}
  }

void DEC_Fun(uchar step)
{ 
 CS1 = 0;
 UD1 = 0;
 while(step--)
  {  
   INC1 = 1;
   INC1 = 0;
   }
 CS1 = 1;
}
 
void INC_Fun(uchar step)
{  
 CS1 = 0;
 UD1 = 1;
 while(step--)
  {   
   INC1 = 1;
   INC1 = 0;
   }
 CS1 = 1;
}

void main(void)
{
  while(1)
  {
   if(Key1==0)
   {    
    Delay_x10ms(10); 
	if(Key1==0) INC_Fun(1);
	}
   else if(Key2==0)
    {
     Delay_x10ms(10); 
     if(Key2==0) DEC_Fun(1);
	 }
   }   
}