dds.c

这是C8051F020的源程序

#include <c8051f020.h>
//-------------------extern function delearation---------------
//extern void init_sys(void);
extern void delay(long int);

sbit TC0=P0^0;
sbit TC1=P0^1;
sbit TC2=P0^2;
sbit TC3=P0^3;
sbit LOADING=P0^4;



sbit WRITE=P0^5;
//sbit FSELECT=P2^7;




//unsigned char a,ad;
void wdata(unsigned char a)
{  WRITE=0;
//   delay(3);
    P2=a;
   WRITE=1;
// delay(3);
   WRITE=0;
  //delay(3);

}
/*void wadr()
{ 
  
 P2=~0x00;
 delay(50);
 P2=~0x19;
 delay(50);
 P2=~0x00;
   delay(50);
}
*/
void sin()

{ wdata(~0x00);
  LOADING=1;
  TC3=1;
  TC2=1;
//  delay(0);
  LOADING=0;
 // delay(0);
  LOADING=1;
  wdata(~0x05);
  wdata(~0xf1);
  wdata(~0x89);
  wdata(~0x37);

  LOADING=1;
  TC3=0;
  TC2=1;
  TC1=1;
  TC0=1;
 // delay(0);
  LOADING=0;
 // delay(0);
  LOADING=1;

}