#ifndef _DELAY_H_
#define _DELAY_H_

#define uint    unsigned int
#define uchar   unsigned char

void delay_1us( void );  //延時1us
void delay_1ms( void );	 //延時nms
void delay_nus( uint n );//延時1ms
void delay_nms( uint n );//延時nms
void delay_ns( uchar n );
#endif