入口函数：
TIM1_BRK_IRQHandler
TIM1_UP_IRQHandler
TIM1_TRG_COM_IRQHandler
TIM1_CC_IRQHandler
TIM2_IRQHandler
TIM3_IRQHandler
TIM4_IRQHandler
TIM5_IRQHandler
TIM6_DAC_IRQHandler <------------------要注意
TIM7_IRQHandler
TIM8_BRK_TIM12_IRQHandler <------------------要注意，定时器12也是用的这个
TIM8_UP_TIM13_IRQHandler <------------------要注意，定时器13也是用的这个
TIM8_TRG_COM_TIM14_IRQHandler <------------------要注意，定时器14也是用的这个
TIM8_CC_IRQHandler
TIM15_IRQHandler
TIM16_IRQHandler
TIM17_IRQHandler |
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楼主
