#include?“delay.h“
void?delay_US（u32?time）	//360us
{
	u32?ij;
	for（i=0;i		for（j=0;j<72;j++）;
}
void?delay_MS（u32?time）
{
	u32?ijn;
	for（i=0;i		for（j=0;j<100;j++）
			for（n=0;n<100;n++）;
}
//TIM_Delay初始化
void?Delay_Init（void）
{
		//開啟時鐘
	RCC->APB1ENR|=1<<5;?//定時器7
	
	RCC->APB1RSTR|=1<<5;?//開啟復位時鐘
	RCC->APB1RSTR&=~（1<<5）;?//關閉復位時鐘
}
void?DelayMs（u32?time）
{
	TIM7->PSC=7200-1;//預分頻，cnt+1時間是0.1ms
	TIM7->ARR=time*10;
	TIM7->CNT=0;
	TIM7->CR1|=1<<0;?//開啟定時器
	while（TIM7->CNTARR）;?//等待時間到達
	TIM7->CR1&=~（1<<0）;?//關閉定時器
	TIM7->SR=0;
}

void?DelayUs（u32?time）
{
		TIM7->PSC=72-1;//預分頻，cnt+1時間是0.1ms
	??TIM7->ARR=time;
	??TIM7->CNT=0;
	??TIM7->CR1|=1<<0;?//開啟定時器
	??while（!（TIM7->SR&1<<0））;?//等待時間到達
		TIM7->CR1&=~（1<<0）;?//關閉定時器
		TIM7->SR=0;
}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2018-04-14?10:56??美的\
?????目錄???????????0??2018-04-14?10:56??美的\HARDWARE\
?????目錄???????????0??2018-04-14?10:56??美的\HARDWARE\DELAY\
?????文件?????????885??2018-04-14?08:22??美的\HARDWARE\DELAY\DELAY.c
?????文件?????????200??2018-04-14?08:22??美的\HARDWARE\DELAY\DELAY.h
?????目錄???????????0??2018-04-14?10:56??美的\HARDWARE\EXTI\
?????文件?????????557??2018-03-29?20:01??美的\HARDWARE\EXTI\exti.c
?????文件?????????135??2018-03-29?19:29??美的\HARDWARE\EXTI\exti.h
?????目錄???????????0??2018-04-14?10:56??美的\HARDWARE\KEY\
?????文件????????1215??2018-03-18?20:18??美的\HARDWARE\KEY\KEY.c
?????文件?????????364??2018-03-17?21:17??美的\HARDWARE\KEY\KEY.h
?????目錄???????????0??2018-04-14?10:56??美的\HARDWARE\LED\
?????文件?????????743??2018-03-23?20:10??美的\HARDWARE\LED\LED.c
?????文件?????????717??2018-03-26?15:58??美的\HARDWARE\LED\LED.h
?????目錄???????????0??2018-04-14?16:35??美的\HARDWARE\TIME\
?????文件????????3487??2018-04-14?16:35??美的\HARDWARE\TIME\time.c
?????文件?????????529??2018-04-14?11:37??美的\HARDWARE\TIME\time.h
?????目錄???????????0??2018-04-15?11:55??美的\OBJ\
?????文件????????3961??2018-04-01?14:17??美的\OBJ\core_cm3.crf
?????文件?????????123??2018-04-01?14:17??美的\OBJ\core_cm3.d
?????文件???????11216??2018-04-01?14:17??美的\OBJ\core_cm3.o
?????文件??????222913??2018-04-14?08:22??美的\OBJ\delay.crf
?????文件?????????300??2018-04-14?08:22??美的\OBJ\delay.d
?????文件??????239020??2018-04-14?08:22??美的\OBJ\delay.o
?????文件??????224908??2018-03-18?19:48??美的\OBJ\delay_1.crf
?????文件??????????86??2018-03-18?20:17??美的\OBJ\delay_1.d
?????文件??????223980??2018-04-01?14:17??美的\OBJ\exti.crf
?????文件?????????402??2018-04-01?14:17??美的\OBJ\exti.d
?????文件??????239272??2018-04-01?14:17??美的\OBJ\exti.o
?????文件??????223306??2018-04-14?08:22??美的\OBJ\key.crf
?????文件?????????321??2018-04-14?08:22??美的\OBJ\key.d
............此處省略53個文件信息