dac0832_backup.txt

DAC0832的程序源代码 DAC0832.doc DAC0832. hex

#include <reg51.h>
#include <intrins.h>
#include<ABSACC.H>  	
#define uchar unsigned char
#define  data_OUT  XBYTE[0x7FFF]
char code dat[]={};
bit flag=0;
  void delay(unsigned  int N)  
  {
  int i; 
  for(i=0;i<N;i++);
  }

void conversion_once_0832(unsigned char out_data)
           {
           data_OUT=out_data; //输出数据
           delay(10);         //延时等待转换
            }
uchar  keyscan()
{
 uchar key;
 if(P1!=0xff)
  {
   delay(61);
   key=P1;
   if(key!=0xff)
    flag=~flag;
    return(key);
  }

}
void triangle()
{
  uchar k;
  for(k=0;k<255;k++)
    conversion_once_0832(k);
  for(;k>0;k--)
     conversion_once_0832(k);
}
void pulse()
{
 conversion_once_0832(0xff);
 delay(1000);
 conversion_once_0832(0x00);
 delay(1000);

}
void fun3()
{
  uchar j;
  for(j=0;j<255;j++)
   conversion_once_0832(j);
}
void fun4()
{
 uchar i;
 for(i=0;i<255;i++)
   {
    conversion_once_0832(dat[i]);
   }
}
void main()
{
 uchar temp; 
 while(1)
  {
   temp=keyscan();//键盘出入
   switch(temp)
     {
	   case 0xfe: 
	             do{
				    triangle();
					}while(keyscan()&&(flag==1));break;
	   case 0xfd: do{
				    pulse();
					}while(keyscan()&&(flag==1));break;
	   case 0xfb: do{
				    fun3();
					}while(keyscan()&&(flag==1));break;
       case 0xf7: do{
				    fun4();
					}while(keyscan()&&(flag==1));break;
	   default: break;
	 }
  }
 
}