/*-----------------------------------------------------------------------
延時函數(shù)
系統(tǒng)時鐘：8M
-----------------------------------------------------------------------*/
#ifndef DELAY_H
#define DELAY_H
#if defined DELAY_C
void delay_1us(void);                 //1us延時函數(shù)
void delay_nus(unsigned int n);       //N us延時函數(shù)
void delay_1ms(void) ;                //1ms延時函數(shù)
void delay_nms(unsigned int n) ;      //N ms延時函數(shù) 
#else
extern void delay_1us(void);                 //1us延時函數(shù)
extern void delay_nus(unsigned int n);       //N us延時函數(shù)
extern void delay_1ms(void) ;                //1ms延時函數(shù)
extern void delay_nms(unsigned int n) ;      //N ms延時函數(shù)
 #endif
 #endif