stm32 TIM定时器[操作寄存器+库函数]（3） 寄存器, 定时器

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User/stm32f10x_it.c

01	#include "stm32f10x_it.h"

02	#include "system.h"

03

04	#define LED0 PAout(4)

05	#define LED1 PAout(5)

06	#define LED2 PAout(6)

07	#define LED3 PAout(7)

08

09	void TIM2_IRQHandler(void)

10

{

11	if(TIM2->SR&0x02)   //捕获比较中断1触发

12

{

13	LED0 = !LED0;

14

15	TIM2 ->CCR1 = TIM2 -> CNT + 40000;     //更新捕获/比较1的值

16

17	TIM2->SR &= 0xFD;  //清除捕获比较中断

18

}

19

20	if(TIM2->SR&0x04)   //捕获比较中断2触发

21

{

22	LED1 = !LED1;

23	TIM2 ->CCR2 = TIM2 -> CNT + 20000;

24

25	TIM2->SR &= 0xFB;  //清除捕获比较中断

26

}

27

28	if(TIM2->SR&0x08)   //捕获比较中断3触发

29

{

30	LED2 = !LED2;

31

32	TIM2 ->CCR3 = TIM2 -> CNT + 10000;

33	TIM2->SR &= 0xF7;  //清除捕获比较中断

34

35

}

36

37	if(TIM2->SR&0x10)   //捕获比较中断4触发

38

{

39	LED3 = !LED3;

40

41	TIM2 ->CCR4 = TIM2 -> CNT + 5000;

42	TIM2->SR &= 0x0F;  //清除捕获比较中断

43

44

}

45

46	TIM2->SR &= ~(1<<0);    //清除中断

47

48

}