给C语言函数添加注释.void IC_Init(void) { RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE); RCC_APB2PeriphClockCmd(RCC_APB2Pe

/** * @brief 初始化输入捕获模块 * @param 无 * @retval 无 */ void IC_Init(void) { // 使能TIM3和GPIOA的时钟 RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE); RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE); // 配置PA6为上拉输入模式 GPIO_InitTypeDef GPIO_InitStructure; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU; GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOA, &GPIO_InitStructure); // 配置TIM3为内部时钟模式 TIM_InternalClockConfig(TIM3); // 配置TIM3的基本参数 TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure; TIM_TimeBaseInitStructure.TIM_ClockDivision = TIM_CKD_DIV1; TIM_TimeBaseInitStructure.TIM_CounterMode = TIM_CounterMode_Up; TIM_TimeBaseInitStructure.TIM_Period = 65536 - 1; //ARR TIM_TimeBaseInitStructure.TIM_Prescaler = 72 - 1; //PSC TIM_TimeBaseInitStructure.TIM_RepetitionCounter = 0; TIM_TimeBaseInit(TIM3, &TIM_TimeBaseInitStructure); // 配置TIM3的输入捕获通道 TIM_ICInitTypeDef TIM_ICInitStructure; TIM_ICInitStructure.TIM_Channel = TIM_Channel_1; TIM_ICInitStructure.TIM_ICFilter = 0xF; TIM_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising; TIM_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1; TIM_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI; TIM_ICInit(TIM3, &TIM_ICInitStructure); // 配置TIM3的输入触发源和从模式 TIM_SelectInputTrigger(TIM3, TIM_TS_TI1FP1); TIM_SelectSlaveMode(TIM3, TIM_SlaveMode_Reset); // 使能TIM3 TIM_Cmd(TIM3, ENABLE); }