我用tim3定时中断没问题，改成tim2就出问题了，原子哥帮忙看看吧

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#include "timer.h"

#include "led.h"

//////////////////////////////////////////////////////////////////////////////////  

//±????ò?????§?°??????????×÷???í???????????????ü????????

//Mini STM32??·?°?

//?¨???¨?±?÷ ?????ú??   

//??????×?@ALIENTEK

//????????:www.openedv.com

//????????:2010/12/03

//°?±???V1.0

//°??¨?ù??????°?±?????

//Copyright(C) ??????×? 2009-2019

//All rights reserved

//////////////////////////////////////////////////////////////////////////////////  

 

//?¨???¨?±?÷??????????

//?????±????????APB1??2±?????APB1??36M

//arr??×?????×°????

//psc???±???¤·?????

//?????????????¨?±?÷3!

void Timerx_Init(u16 arr,u16 psc)

{

    TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;

NVIC_InitTypeDef NVIC_InitStructure;

RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE); //?±??????

TIM_TimeBaseStructure.TIM_Period = arr; //?è???????????ü??????×°????????×?????×°???????÷???????? ??????5000??500ms

TIM_TimeBaseStructure.TIM_Prescaler = psc; //?è??????×÷??TIMx?±?????????????¤·?????  10Khz??????????  

TIM_TimeBaseStructure.TIM_ClockDivision = 0; //?è???±??·???:TDTS = Tck_tim

TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;  //TIM?ò??????????

TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure); //?ù??TIM_TimeBaseInitStruct?????¨????????????TIMx???±???ù??????

 

TIM_ITConfig(  //?????ò???§?????¨??TIM????

TIM2, //TIM2

TIM_IT_Update  |  //TIM ??????

TIM_IT_Trigger,   //TIM ??·??????? 

ENABLE  //????

);

NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn;  //TIM3????

NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;  //??????????0??

NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3;  //????????3??

NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ?¨??±?????

NVIC_Init(&NVIC_InitStructure);  //?ù??NVIC_InitStruct?????¨???????????????èNVIC?????÷

TIM_Cmd(TIM2, ENABLE);  //????TIMx???è

 

}

void TIM2_IRQHandler(void)   //TIM3????

{

if (TIM_GetITStatus(TIM2, TIM_IT_Update) != RESET) //?ì?é???¨??TIM????·??ú??·?:TIM ?????? 

{

TIM_ClearITPendingBit(TIM2, TIM_IT_Update  );  //????TIMx???????????í??:TIM ?????? 

LED1=!LED1;

}

}

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注释都乱码了，不好意思

正点原子

你这代码看上去没问题啊,你出的啥问题啊?

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回复【3楼】正点原子:
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软件仿真端口的波形不出来，改成tim3就出来了，但是在板子上面灯的现象来看，代码是对的

正点原子

你IO口的配置没有看到,是不是IO口没配置好?

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回复【5楼】正点原子:
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没有啊，IO口配置错了，灯就不会闪了，就是说硬件上面效果出来了，但是软件仿真时没看到效果

正点原子

回复【6楼】印注:
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软仿真看看tim2的寄存器值