www.pudn.com > time.rar > delay.c

#define DELAY_C 
#include "includes.h" 
#define XTAL 4    //晶振频率，单位MHz 
void delay_1us(void)                 //1us延时函数 
  { 
   asm("nop"); 
  } 
 
void delay_nus(unsigned int n)       //N us延时函数 
  { 
   unsigned int i=0; 
   for (i=0;i