dds.h

该代码来自2008年湖北电子设计大赛位移测量装置制作,主要实现位移的自动测量和手动测量,msp430单片机

#include"common.h"
#define uchar unsigned char
#define POUT  P5OUT
#define dat1  POUT |= BIT4
#define dat0  POUT &= ~BIT4
#define clk1  POUT |= BIT5
#define clk0  POUT &=~BIT5
#define load1 POUT  |= BIT6
#define load0 POUT  &=~BIT6
#define rest  POUT |= BIT7
#define rest0 POUT &= ~BIT7
#define outport P5DIR |= 0Xff
#define fre 100000
void delay(int m);
void init_dds(void);
void write_dds(unsigned long dds);
void write_freq(unsigned long freq);