STM32F407捕捉外部脉冲计数

#include “delay.h“

__IO u16 ntime;								    

void delay_ms（u16 nms）
{	 		  	  
	ntime=nms;
	SysTick_Config（168000）;//1ms产生一次中断
	while（ntime）;
	SysTick->CTRL=0x00;			  	    
}   
		    								   
void delay_us（u32 nus）
{		
	ntime=nus;
	SysTick_Config（168）;//1us产生一次中断
	while（ntime）;
	SysTick->CTRL=0x00;
}

void Delay（u32 count）
{
	while（count--）;
}

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2016-04-19 10:34  STM32F407捕捉外部脉冲计数
     目录           0  2016-04-19 10:34  STM32F407捕捉外部脉冲计数Libraries
     目录           0  2016-04-19 10:34  STM32F407捕捉外部脉冲计数LibrariesCMSIS
     文件       51511  2011-07-26 10:34  STM32F407捕捉外部脉冲计数LibrariesCMSISCMSIS END USER LICENCE AGREEMENT.pdf
     目录           0  2016-04-19 10:34  STM32F407捕捉外部脉冲计数LibrariesCMSISDSP_Lib
     目录           0  2016-04-19 10:34  STM32F407捕捉外部脉冲计数LibrariesCMSISDSP_LibExamples
     目录           0  2016-04-19 10:34  STM32F407捕捉外部脉冲计数LibrariesCMSISDSP_LibExamplesCommon
     目录           0  2016-04-19 10:34  STM32F407捕捉外部脉冲计数LibrariesCMSISDSP_LibExamplesCommonInclude
     文件        1979  2011-07-26 10:34  STM32F407捕捉外部脉冲计数LibrariesCMSISDSP_LibExamplesCommonIncludemath_helper.h
     目录           0  2016-04-19 10:34  STM32F407捕捉外部脉冲计数LibrariesCMSISDSP_LibExamplesCommonSource
     文件        9852  2011-07-26 10:34  STM32F407捕捉外部脉冲计数LibrariesCMSISDSP_LibExamplesCommonSourcemath_helper.c
     目录           0  2016-04-19 10:34  STM32F407捕捉外部脉冲计数LibrariesCMSISDSP_LibExamplesarm_class_marks_example
     目录           0  2016-04-19 10:34  STM32F407捕捉外部脉冲计数LibrariesCMSISDSP_LibExamplesarm_class_marks_exampleARM
     文件         405  2011-07-26 10:34  STM32F407捕捉外部脉冲计数LibrariesCMSISDSP_LibExamplesarm_class_marks_exampleARMarm_class_marks_example.ini
     文件        8217  2011-07-27 11:52  STM32F407捕捉外部脉冲计数LibrariesCMSISDSP_LibExamplesarm_class_marks_exampleARMarm_cortexM0l_class_marks_example.uvopt
     文件       15090  2011-07-27 11:52  STM32F407捕捉外部脉冲计数LibrariesCMSISDSP_LibExamplesarm_class_marks_exampleARMarm_cortexM0l_class_marks_example.uvproj
     文件        8417  2011-07-27 11:52  STM32F407捕捉外部脉冲计数LibrariesCMSISDSP_LibExamplesarm_class_marks_exampleARMarm_cortexM3l_class_marks_example.uvopt
     文件       15082  2011-07-27 11:52  STM32F407捕捉外部脉冲计数LibrariesCMSISDSP_LibExamplesarm_class_marks_exampleARMarm_cortexM3l_class_marks_example.uvproj
     文件        8233  2011-07-27 11:52  STM32F407捕捉外部脉冲计数LibrariesCMSISDSP_LibExamplesarm_class_marks_exampleARMarm_cortexM4lf_class_marks_example.uvopt
     文件       15107  2011-07-27 11:52  STM32F407捕捉外部脉冲计数LibrariesCMSISDSP_LibExamplesarm_class_marks_exampleARMarm_cortexM4lf_class_marks_example.uvproj
     文件        4363  2011-07-26 10:34  STM32F407捕捉外部脉冲计数LibrariesCMSISDSP_LibExamplesarm_class_marks_exampleARMstartup_ARMCM0.s
     文件        5000  2011-07-26 10:34  STM32F407捕捉外部脉冲计数LibrariesCMSISDSP_LibExamplesarm_class_marks_exampleARMstartup_ARMCM3.s
     文件        5000  2011-07-26 10:34  STM32F407捕捉外部脉冲计数LibrariesCMSISDSP_LibExamplesarm_class_marks_exampleARMstartup_ARMCM4.s
     目录           0  2016-04-19 10:34  STM32F407捕捉外部脉冲计数LibrariesCMSISDSP_LibExamplesarm_class_marks_exampleGCC
     文件        5804  2011-07-26 10:34  STM32F407捕捉外部脉冲计数LibrariesCMSISDSP_LibExamplesarm_class_marks_exampleGCCARMCMx.ld
     文件         405  2011-07-26 10:34  STM32F407捕捉外部脉冲计数LibrariesCMSISDSP_LibExamplesarm_class_marks_exampleGCCarm_class_marks_example.ini
     文件        7549  2011-07-27 11:52  STM32F407捕捉外部脉冲计数LibrariesCMSISDSP_LibExamplesarm_class_marks_exampleGCCarm_cortexM0l_class_marks_example.uvopt
     文件       11862  2011-07-27 11:52  STM32F407捕捉外部脉冲计数LibrariesCMSISDSP_LibExamplesarm_class_marks_exampleGCCarm_cortexM0l_class_marks_example.uvproj
     文件        7563  2011-07-27 11:52  STM32F407捕捉外部脉冲计数LibrariesCMSISDSP_LibExamplesarm_class_marks_exampleGCCarm_cortexM3l_class_marks_example.uvopt
     文件       11854  2011-07-27 11:52  STM32F407捕捉外部脉冲计数LibrariesCMSISDSP_LibExamplesarm_class_marks_exampleGCCarm_cortexM3l_class_marks_example.uvproj
     文件        7564  2011-07-27 11:52  STM32F407捕捉外部脉冲计数LibrariesCMSISDSP_LibExamplesarm_class_marks_exampleGCCarm_cortexM4lf_class_marks_example.uvopt
............此处省略763个文件信息