9851.c

DDS芯片9851的驱动程序~用来产生不同频率的正弦波波形~

#include<at89x52.h>
#define RESET  P1_0
#define W_CLK  P1_1
#define FQ_UD  P1_2
#define datain P2
unsigned char word[5]={0x09,0x66,0x66,0x66,0x66};  

unsigned char i;


/********************************
9851驱动程序
*******************************/
void write9851(void)
{
  RESET = 0;
  RESET = 1;
  RESET = 0;//AD9851复位    
  FQ_UD = 0;
  for(i=0;i<5;i++)
  {
    W_CLK = 0; 
       P2=word[i];
       W_CLK =1; 
  }
  W_CLK = 0; 
  FQ_UD =1; 
}


void main()
{
  P2=0;
  write9851();
  while(1); 

}