/*
//杜洋工作室出品
//洋桃系列開(kāi)發(fā)板應(yīng)用程序
//關(guān)注微信公眾號(hào)：洋桃電子
//洋桃開(kāi)發(fā)板資料下載?www.DoYoung.net/YT?
//即可免費(fèi)看所有教學(xué)視頻，下載技術(shù)資料，技術(shù)疑難提問(wèn)
//更多內(nèi)容盡在?杜洋工作室主頁(yè)?www.doyoung.net
*/

/*
《修改日志》
1-201708271933?加入了秒延時(shí)函數(shù)。
2-201712260223?加入延時(shí)前計(jì)數(shù)器值清0，解決連續(xù)用uS延時(shí)的BUG問(wèn)題。


*/



#include?“delay.h“


#define?AHB_INPUT??72??//請(qǐng)按RCC中設(shè)置的AHB時(shí)鐘頻率填寫(xiě)到這里（單位MHz）


void?delay_us（u32?uS）{?//uS微秒級(jí)延時(shí)程序（參考值即是延時(shí)數(shù)，72MHz時(shí)最大值233015）	
	SysTick->LOAD=AHB_INPUT*uS;??????//重裝計(jì)數(shù)初值（當(dāng)主頻是72MHz，72次為1微秒）
	SysTick->VAL=0x00;????????//清空定時(shí)器的計(jì)數(shù)器
	SysTick->CTRL=0x00000005;//時(shí)鐘源HCLK，打開(kāi)定時(shí)器
	while（!（SysTick->CTRL&0x00010000））;?//等待計(jì)數(shù)到0
	SysTick->CTRL=0x00000004;//關(guān)閉定時(shí)器
}

void?delay_ms（u16?ms）{?//mS毫秒級(jí)延時(shí)程序（參考值即是延時(shí)數(shù)，最大值65535）	?		??	??
	while（?ms--?!=?0）{
		delay_us（1000）;	//調(diào)用1000微秒的延時(shí)
	}
}
?
void?delay_s（u16?s）{?//S秒級(jí)延時(shí)程序（參考值即是延時(shí)數(shù)，最大值65535）	?		??	??
	while（?s--?!=?0）{
		delay_ms（1000）;	//調(diào)用1000毫秒的延時(shí)
	}
}?

/*********************************************************************************************
?*?杜洋工作室?www.DoYoung.net
?*?洋桃電子?www.DoYoung.net/YT?
*********************************************************************************************/

?屬性????????????大小?????日期????時(shí)間???名稱(chēng)
-----------?---------??----------?-----??----

????.CA....??????1450??2018-01-23?02:27??多功能計(jì)步器\Basic\delay\delay.c

????.CA....???????204??2017-12-26?02:25??多功能計(jì)步器\Basic\delay\delay.h

????.CA....??????1840??2019-04-11?09:47??多功能計(jì)步器\Basic\flash\flash.c

????.CA....???????471??2019-02-01?22:28??多功能計(jì)步器\Basic\flash\flash.h

????.CA....??????5526??2019-04-11?09:48??多功能計(jì)步器\Basic\i2c\i2c.c

????.CA....???????601??2017-09-03?02:36??多功能計(jì)步器\Basic\i2c\i2c.h

????.CA....??????7445??2017-08-27?19:38??多功能計(jì)步器\Basic\rtc\rtc.c

????.CA....???????615??2018-01-19?02:10??多功能計(jì)步器\Basic\rtc\rtc.h

????.CA....??????3039??2017-12-31?01:19??多功能計(jì)步器\Basic\sys\sys.c

????.CA....??????2205??2017-08-27?20:05??多功能計(jì)步器\Basic\sys\sys.h

????.CA....?????10470??2019-04-11?09:48??多功能計(jì)步器\Basic\usart\usart.c

????.CA....??????1430??2018-01-11?01:42??多功能計(jì)步器\Basic\usart\usart.h

????.CA....????349156??2019-02-12?14:46??多功能計(jì)步器\buzzer.crf

????.CA....??????1273??2019-02-12?14:46??多功能計(jì)步器\buzzer.d

????.CA....????383740??2019-02-12?14:46??多功能計(jì)步器\buzzer.o

????.CA...R?????17273??2010-06-07?10:25??多功能計(jì)步器\CMSIS\core_cm3.c

????.CA...R?????85714??2011-02-09?14:59??多功能計(jì)步器\CMSIS\core_cm3.h

????.CA...R????633941??2011-03-10?10:51??多功能計(jì)步器\CMSIS\stm32f10x.h

????.CA...R?????36557??2011-03-10?10:51??多功能計(jì)步器\CMSIS\system_stm32f10x.c

????.CA...R??????2085??2011-03-10?10:51??多功能計(jì)步器\CMSIS\system_stm32f10x.h

????.CA....??????3937??2019-02-12?14:46??多功能計(jì)步器\core_cm3.crf

????.CA....????????89??2019-02-12?14:46??多功能計(jì)步器\core_cm3.d

????.CA....?????11324??2019-02-12?14:46??多功能計(jì)步器\core_cm3.o

????.CA....??????6956??2015-12-10?17:06??多功能計(jì)步器\DebugConfig\Target_1_STM32F103C8_1.0.0.dbgconf

????.CA....????347502??2019-02-12?14:46??多功能計(jì)步器\delay.crf

????.CA....??????1196??2019-02-12?14:46??多功能計(jì)步器\delay.d

????.CA....????380300??2019-02-12?14:46??多功能計(jì)步器\delay.o

????.CA....????348034??2019-02-12?14:46??多功能計(jì)步器\flash.crf

????.CA....??????1196??2019-02-12?14:46??多功能計(jì)步器\flash.d

????.CA....????381916??2019-02-12?14:46??多功能計(jì)步器\flash.o

............此處省略225個(gè)文件信息