定时器比较中断

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big5|

楼主 | 2009-8-8 12:33 | 只看该作者回帖奖励

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定时器, TI, se, ST, tc

初始化：

TIM_TimeBaseStructure.TIM_Period = 0xffff;
  TIM_TimeBaseStructure.TIM_Prescaler = 11;
  TIM_TimeBaseStructure.TIM_ClockDivision = 0;
  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
  TIM_TimeBaseStructure.TIM_RepetitionCounter = 0;
  TIM_TimeBaseInit(TIM4, &TIM_TimeBaseStructure);

  TIM_SetCompare1(TIM4, 55296);
  TIM_SetCompare2(TIM4, 55296);

  TIM_ClearFlag(TIM4, TIM_FLAG_CC1 | TIM_FLAG_CC2);
  TIM_ITConfig(TIM4, TIM_IT_CC1 | TIM_IT_CC2, ENABLE);
  TIM_Cmd(TIM4, ENABLE);

中断伪代码：
void TIM4_IRQHandler(void)
{
  u16 capture;

  if (TIM_GetITStatus(TIM4, TIM_IT_CC1) != RESET)
  {
capture = TIM_GetCapture1(TIM4);
TIM_SetCompare1(TIM4, capture + 55296);
            ...
TIM_ClearITPendingBit(TIM4, TIM_IT_CC1);
  }
  if (TIM_GetITStatus(TIM4, TIM_IT_CC2) != RESET)
  {
capture = TIM_GetCapture2(TIM4);
TIM_SetCompare2(TIM4, capture + 55296);
            ...
TIM_ClearITPendingBit(TIM4, TIM_IT_CC2);
  }
}
结果不是预期的，只打开任何一路，结果正确。是这样使用吗？

使用特权