[mw_shl_code=c,true]/***************************** * ?¨?±?÷2???? * *****************************/ void AD_CW_TIM2_Configuration(void) { TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; NVIC_InitTypeDef NVIC_InitStructure; TIM_DeInit(TIM2); /* TIM6 Periph clock enable */ RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE); /* Time base configuration */ TIM_TimeBaseStructInit(&TIM_TimeBaseStructure); TIM_TimeBaseStructure.TIM_Period =10-1;//0X3D 20000-1 TIM_TimeBaseStructure.TIM_Prescaler = 840-1;//8400-1 TIM_TimeBaseStructure.TIM_ClockDivision = 0; TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure); /* TIM6 TRGO selection */ TIM_SelectOutputTrigger(TIM2, TIM_TRGOSource_Update); NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure); TIM_ITConfig(TIM2,TIM_IT_Update,ENABLE);//加上这句就跑飞了，为啥呢？ /* TIM6 enable counter */ TIM_Cmd(TIM2, ENABLE); //TIM_CtrlPWMOutputs(TIM2, ENABLE); }[/mw_shl_code]