stm32 主定时器中断一次，从定时器计数器加一

angelgods · 发表于 2016-5-3 22:30:32

如题。
主定时器为TIM1
从定时器为TIM4.

希望实现：主定时器每溢出中断一次，从定时器的计数器加一。

尝试了很长时间，还是没有好的方法解决。

angelgods · 发表于 2016-5-3 22:35:36

/* TIM1ÅäÖÃ  */
  /* Time base configuration */
  TIM_TimeBaseStructure.TIM_Period = 143;
  TIM_TimeBaseStructure.TIM_Prescaler = 3;
  TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1 ;
  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
  TIM_TimeBaseStructure.TIM_RepetitionCounter = 0x0;
  TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);
  TIM_ARRPreloadConfig(TIM1, ENABLE);

  /* PWM1 Mode configuration: Channel1 */
  TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
  TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Disable;
  TIM_OCInitStructure.TIM_Pulse = 72;
  TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
  TIM_OC1Init(TIM1, &TIM_OCInitStructure);
  TIM_OC1PreloadConfig(TIM1, TIM_OCPreload_Enable);

  TIM_SelectOutputTrigger(TIM1, TIM_TRGOSource_Update);
  TIM_SelectMasterSlaveMode(TIM1, TIM_MasterSlaveMode_Enable);
/* TIM4 */
/* Time base configuration */
  TIM_TimeBaseStructure.TIM_Period = 1;
  TIM_TimeBaseStructure.TIM_Prescaler = 0;
  TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1 ;
  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
  TIM_TimeBaseStructure.TIM_RepetitionCounter = 0x0;
  TIM_TimeBaseInit(TIM4, &TIM_TimeBaseStructure);
  TIM_ARRPreloadConfig(TIM4, ENABLE);

  /* PWM1 Mode configuration: Channel1 */
  TIM_OCInitStructure.TIM_OCMode =  TIM_OCMode_Toggle ;
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Disable;
  TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Disable;

TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
  TIM_OC1Init(TIM4, &TIM_OCInitStructure);
  TIM_OC1PreloadConfig(TIM4, TIM_OCPreload_Enable);

  TIM_SelectSlaveMode(TIM4, TIM_SlaveMode_External1 );
  TIM_SelectInputTrigger(TIM4, TIM_TS_ITR0);
  TIM_ITRxExternalClockConfig(TIM4,TIM_TS_ITR0);