STM8sTIM2_CH2输入捕获无法进入中断

wdc596933938 · 发表于 2016-4-9 18:46:04

[mw_shl_code=c,true]void cap_Init(void)
{
  irda_state = IR_STATE_IDLE;
  irda_Index = 0;

  cap_IO_Init();

  //定时器周期1us
  TIM2_TimeBaseInit(TIM2_PRESCALER_16, 0xffff);
// TIM2_Cmd(ENABLE);

  //下降沿捕获
  TIM2_ICInit(TIM2_CHANNEL_2, TIM2_ICPOLARITY_FALLING, TIM2_ICSELECTION_DIRECTTI, TIM2_ICPSC_DIV1, 0x0F);

//开启捕获2中断和更新中断
  TIM2_ITConfig(TIM2_IT_UPDATE, ENABLE);
  TIM2_ITConfig(TIM2_IT_CC2, ENABLE);


  TIM2_ClearFlag(TIM2_FLAG_CC2);

  TIM2_Cmd(ENABLE);
//  TIM2_GenerateEvent(TIM2_EVENTSOURCE_CC2);



}[/mw_shl_code][mw_shl_code=c,true]void cap_IO_Init(void)
{
  GPIO_DeInit(GPIOD);
  GPIO_Init(GPIOD, GPIO_PIN_3, GPIO_MODE_IN_PU_NO_IT);
  //GPIO_Init(GPIOD, GPIO_PIN_3, GPIO_MODE_IN_PU_IT);
  //EXTI_SetExtIntSensitivity(EXTI_PORT_GPIOD, EXTI_SENSITIVITY_FALL_ONLY);

}[/mw_shl_code]