delay.h

GPS模块的相关资料

#ifndef __DELAY_H__
#define __DELAY_H__


#ifndef FREQUENCRY
#define FREQUENCRY	(12000000)
#endif

void delay_1us(void);				//并不为1us的准确延时
void delay_nus(volatile unsigned int t);	
void delay_1ms(void);				//约为1ms
void delay_nms(volatile unsigned int t);





#endif