我用的是STM32F030C8
发现定时器进不了中断，查找原因未果，在此求教！
下面的我的代码：

定时器配置：
[mw_shl_code=c,true]void Tim3_Config(uint32_t period, uint16_t PrescalerValue) { NVIC_InitTypeDef NVIC_InitStructure; TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; /* TIM3 clock enable */ RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE); /* Enable the TIM3 global Interrupt */ NVIC_InitStructure.NVIC_IRQChannel = TIM3_IRQn; NVIC_InitStructure.NVIC_IRQChannelPriority = 0; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure); /* Time base configuration */ TIM_DeInit(TIM3); TIM_TimeBaseStructure.TIM_Period = period; TIM_TimeBaseStructure.TIM_Prescaler = PrescalerValue; TIM_TimeBaseStructure.TIM_ClockDivision = 0; TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; TIM_TimeBaseStructure.TIM_RepetitionCounter = period; TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure); TIM_ClearFlag(TIM3, TIM_FLAG_Update); /* TIM IT enable */ TIM_ITConfig(TIM3, TIM_IT_Update, ENABLE); /* TIM enable counter */ TIM_Cmd(TIM3, ENABLE); } [/mw_shl_code] 中断函数：
[mw_shl_code=c,true]void TIM3_IRQHandler(void) { if (TIM_GetITStatus(TIM3, TIM_IT_Update) != RESET) { TIM_ClearITPendingBit(TIM3, TIM_IT_Update ); printf("timer interrupt! "); } }[/mw_shl_code] 使用的库是STM32F0xx_StdPeriph_Lib_V1.5.0
startup_stm32f030.s中关于中断的定义有TIM3_IRQHandler，如下： [mw_shl_code=c,true] [/mw_shl_code] [mw_shl_code=c,true]工程编译正常，下载正常，串口正常，但是就是进不了定时器中断（串口收不到中断中的字符串），请问问题出在哪？谢谢！[/mw_shl_code]