#include?“delay.h“
#include?
#include?
//////////////////////////////////////////////////////////////////////////////////	?
//本程序只供學(xué)習(xí)使用，未經(jīng)作者許可，不得用于其它任何用途
//Mini?STM32開發(fā)板
//使用SysTick的普通計數(shù)模式對延遲進(jìn)行管理
//包括delay_usdelay_ms
//正點(diǎn)原子@ALIENTEK
//技術(shù)論壇:www.openedv.com
//修改日期:2010/5/27
//版本：V1.2
//版權(quán)所有，盜版必究。
//Copyright（C）?正點(diǎn)原子?2009-2019
//All?rights?reserved
//********************************************************************************
//V1.2修改說明
//修正了中斷中調(diào)用出現(xiàn)死循環(huán)的錯誤
//防止延時不準(zhǔn)確采用do?while結(jié)構(gòu)!
//////////////////////////////////////////////////////////////////////////////////	?
static?unsigned?char?fac_us=0;//us延時倍乘數(shù)
static?unsigned?short?int?fac_ms=0;//ms延時倍乘數(shù)
//初始化延遲函數(shù)
//SYSTICK的時鐘固定為HCLK時鐘的1/8
//SYSCLK:系統(tǒng)時鐘
void?delay_init（unsigned?char?SYSCLK）
{
//	SysTick->CTRL&=0xfffffffb;//bit2清空選擇外部時鐘??HCLK/8
	SysTick_CLKSourceConfig（SysTick_CLKSource_HCLK_Div8）;	//選擇外部時鐘??HCLK/8
	fac_us=SYSCLK/8;		????
	fac_ms=（unsigned?short?int）fac_us*1000;
}								????
//延時nms
//注意nms的范圍
//SysTick->LOAD為24位寄存器所以最大延時為:
//nms<=0xffffff*8*1000/SYSCLK
//SYSCLK單位為Hznms單位為ms
//對72M條件下nms<=1864?
void?delay_ms（unsigned?short?int?nms）
{	?		??	??
	unsigned?long?int?temp;		???
	SysTick->LOAD=（unsigned?long?int）nms*fac_ms;//時間加載（SysTick->LOAD為24bit）
	SysTick->VAL?=0x00;???????????//清空計數(shù)器
	SysTick->CTRL=0x01?;??????????//開始倒數(shù)??
	do
	{
		temp=SysTick->CTRL;
	}
	while（temp&0x01&&!（temp&（1<<16）））;//等待時間到達(dá)???
	SysTick->CTRL=0x00;???????//關(guān)閉計數(shù)器
	SysTick->VAL?=0X00;???????//清空計數(shù)器	??	????
}???
//延時nus
//nus為要延時的us數(shù).		????								???
void?delay_us（unsigned?long?int?nus）
{		
	unsigned?long?int?temp;	????	?
	SysTick->LOAD=nus*fac_us;?//時間加載	??		?
	SysTick->VAL=0x00;????????//清空計數(shù)器
	SysTick->CTRL=0x01?;??????//開始倒數(shù)?	?
	do
	{
		temp=SysTick->CTRL;
	}
	while（temp&0x01&&!（temp&（1<<16）））;//等待時間到達(dá)???
	SysTick->CTRL=0x00;???????//關(guān)閉計數(shù)器
	SysTick->VAL?=0X00;???????//清空計數(shù)器	?
}

?屬性????????????大小?????日期????時間???名稱
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?????目錄???????????0??2013-08-12?13:28??hongwai\
?????目錄???????????0??2013-07-27?16:13??hongwai\Libraries\
?????目錄???????????0??2013-07-27?16:13??hongwai\Libraries\CMSIS\
?????文件???????51511??2013-07-22?15:36??hongwai\Libraries\CMSIS\CMSIS?END?USER?LICENCE?AGREEMENT.pdf
?????目錄???????????0??2013-07-27?16:13??hongwai\Libraries\CMSIS\Device\
?????目錄???????????0??2013-07-27?16:13??hongwai\Libraries\CMSIS\Device\ST\
?????目錄???????????0??2013-07-27?16:13??hongwai\Libraries\CMSIS\Device\ST\STM32F0xx\
?????目錄???????????0??2013-07-27?16:13??hongwai\Libraries\CMSIS\Device\ST\STM32F0xx\Include\
?????文件??????237739??2013-07-22?15:36??hongwai\Libraries\CMSIS\Device\ST\STM32F0xx\Include\stm32f0xx.h
?????文件????????2220??2013-07-22?15:36??hongwai\Libraries\CMSIS\Device\ST\STM32F0xx\Include\system_stm32f0xx.h
?????文件???????17060??2013-07-22?15:36??hongwai\Libraries\CMSIS\Device\ST\STM32F0xx\Release_Notes.html
?????目錄???????????0??2013-07-27?16:13??hongwai\Libraries\CMSIS\Device\ST\STM32F0xx\Source\
?????目錄???????????0??2013-07-27?16:13??hongwai\Libraries\CMSIS\Device\ST\STM32F0xx\Source\Templates\
?????目錄???????????0??2013-07-27?16:13??hongwai\Libraries\CMSIS\Device\ST\STM32F0xx\Source\Templates\TrueSTUDIO\
?????文件????????8721??2013-07-22?15:36??hongwai\Libraries\CMSIS\Device\ST\STM32F0xx\Source\Templates\TrueSTUDIO\startup_stm32f0xx.s
?????目錄???????????0??2013-07-27?16:13??hongwai\Libraries\CMSIS\Device\ST\STM32F0xx\Source\Templates\arm\
?????文件???????10646??2013-07-22?15:36??hongwai\Libraries\CMSIS\Device\ST\STM32F0xx\Source\Templates\arm\startup_stm32f0xx.s
?????目錄???????????0??2013-07-27?16:13??hongwai\Libraries\CMSIS\Device\ST\STM32F0xx\Source\Templates\gcc_ride7\
?????文件????????8515??2013-07-22?15:36??hongwai\Libraries\CMSIS\Device\ST\STM32F0xx\Source\Templates\gcc_ride7\startup_stm32f0xx.s
?????目錄???????????0??2013-07-27?16:13??hongwai\Libraries\CMSIS\Device\ST\STM32F0xx\Source\Templates\iar\
?????文件???????11163??2013-07-22?15:36??hongwai\Libraries\CMSIS\Device\ST\STM32F0xx\Source\Templates\iar\startup_stm32f0xx.s
?????文件???????12412??2013-07-22?15:36??hongwai\Libraries\CMSIS\Device\ST\STM32F0xx\Source\Templates\system_stm32f0xx.c
?????目錄???????????0??2013-07-27?16:13??hongwai\Libraries\CMSIS\Documentation\
?????文件???????13643??2013-07-22?15:36??hongwai\Libraries\CMSIS\Documentation\CMSIS-SVD_Schema_1_0.xsd
?????文件??????127419??2013-07-22?15:36??hongwai\Libraries\CMSIS\Documentation\CMSIS_CM4_SIMD.htm
?????文件???????65406??2013-07-22?15:36??hongwai\Libraries\CMSIS\Documentation\CMSIS_Core.htm
?????文件????????9956??2013-07-22?15:36??hongwai\Libraries\CMSIS\Documentation\CMSIS_DebugSupport.htm
?????文件???????17863??2013-07-22?15:36??hongwai\Libraries\CMSIS\Documentation\CMSIS_History.htm
?????文件??????123676??2013-07-22?15:36??hongwai\Libraries\CMSIS\Documentation\CMSIS_Logo_Final.jpg
?????文件???????67286??2013-07-22?15:36??hongwai\Libraries\CMSIS\Documentation\CMSIS_System_View_Description.htm
?????目錄???????????0??2013-07-27?16:13??hongwai\Libraries\CMSIS\Include\
............此處省略541個文件信息