max525.c

DA和液晶显示 DA芯片将数字转换为模拟并显示

#include <reg51.h>			   
#include <intrins.h>
#include <1602lcd.h>


#define uchar unsigned char 
#define uint unsigned int

sbit CLK=P1^6;
sbit CS=P1^5;
sbit DIN=P2^7;
 
uchar code InitDisp[]={"  DAconverter  ?"};

void LoadDA(uchar cmd,uint DAData)
{uchar i;
 uint bdata t;
 t=cmd;
 t=t<<8;
 t=DAData|t;
 CS=0;
 for(i=0;i<16;i++)
 {CLK=0;
  if(t&0x8000)
    DIN=1;
  else
    DIN=0;
  _nop_();
  t=t<<1;
  CLK=1;
 }
 _nop_();
 CS=1;
}

main()
{uint i,j;   	

        Mdelay(400); 
        LCMInit(); 
        Mdelay(5); 
		DisplayListChar(0,0,InitDisp);
 while(1)
 {
 for(i=0,j=4095;i<4096;i++,j--)
  {LoadDA(0x10,i);
  LoadDA(0x50,j);
  LoadDA(0x40,0x0000);
  }
 }
}