F4ZGT6 TIM1 用编码器模式只有PA8输入方波脉冲（一通道）才能进入中断

清诚 · 发表于 2017-7-21 14:12:29

void TIM1_Mode_Config(void)
{
      GPIO_InitTypeDef GPIO_InitStructure;
      TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
   NVIC_InitTypeDef NVIC_InitStructure;
TIM_ICInitTypeDef       TIM1_ICInitStructure;

      RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1,ENABLE);       //TIM5时钟使能
      RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);       //使能PORTA时钟

      GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8|GPIO_Pin_11; //GPIOC6/7
      GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;//复用功能
      GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;       //速度100MHz
      //GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; //推挽复用输出
      //GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_DOWN; //下拉
      GPIO_Init(GPIOA,&GPIO_InitStructure); //初始化PAC

      GPIO_PinAFConfig(GPIOA,GPIO_PinSource8,GPIO_AF_TIM1); //PC6复用位定时器8
   GPIO_PinAFConfig(GPIOA,GPIO_PinSource11,GPIO_AF_TIM1); //PC7复用位定时器8

      TIM_TimeBaseStructure.TIM_Prescaler=0;  //定时器分频
      TIM_TimeBaseStructure.TIM_CounterMode=TIM_CounterMode_Up; //向上计数模式
      TIM_TimeBaseStructure.TIM_Period=(390)-1; //自动重装载值
      TIM_TimeBaseStructure.TIM_ClockDivision=TIM_CKD_DIV1;

      TIM_TimeBaseInit(TIM1,&TIM_TimeBaseStructure);

      TIM_EncoderInterfaceConfig(TIM1, TIM_EncoderMode_TI12,TIM_ICPolarity_Rising,TIM_ICPolarity_Rising);
      TIM_ICStructInit(&TIM1_ICInitStructure);
      TIM1_ICInitStructure.TIM_Channel = TIM_Channel_1;
      TIM1_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI; //映射到TI1上
      TIM1_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;       //配置输入分频,不分频
      TIM1_ICInitStructure.TIM_ICFilter = 0x6;
      TIM_ICInit(TIM1, &TIM1_ICInitStructure);
      TIM1_ICInitStructure.TIM_Channel = TIM_Channel_4;
      TIM1_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI; //映射到TI2上
      TIM1_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;       //配置输入分频,不分频
      TIM1_ICInitStructure.TIM_ICFilter = 0x6;
      TIM_ICInit(TIM1, &TIM1_ICInitStructure);

      TIM_SetCounter(TIM1,0);
  //TIM_ITConfig(TIM8,TIM_IT_Update|TIM_IT_CC1,ENABLE);//允许更新中断 ,允许CC1IE捕获中断
TIM_ITConfig(TIM1,TIM_IT_Update,ENABLE);//允许更新中断 ,允许CC1IE捕获中断
TIM_Cmd(TIM1,ENABLE );       //使能定时器5
NVIC_EnableIRQ(TIM1_UP_TIM10_IRQn);
direction1 = (TIM1->CR1 & TIM_CR1_DIR ? FORWARD1 : BACKWARD1);
//    NVIC_InitStructure.NVIC_IRQChannel = TIM8_UP_TIM13_IRQn;
//       NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=2;//抢占优先级3
//       NVIC_InitStructure.NVIC_IRQChannelSubPriority =0;             //子优先级3
//       NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;                      //IRQ通道使能
//       NVIC_Init(&NVIC_InitStructure);       //根据指定的参数初始化VIC寄存器、

//       TIM_ITConfig(TIM8, TIM_IT_CC1 |TIM_IT_CC2,ENABLE);
//       NVIC_EnableIRQ(TIM8_CC_IRQn);
}