PWM输出奇异现象，原子大哥进来看一下吧

yuanxinfei

PWM输出配置
TIM_TimeBaseStructure.TIM_Period = 999;
  TIM_TimeBaseStructure.TIM_Prescaler = 0;
  TIM_TimeBaseStructure.TIM_ClockDivision = 0;
  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
  TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);
  /* PWM1 Mode configuration: Channel1 */
  TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
  TIM_OCInitStructure.TIM_Pulse = CCR1_Val;
  TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
  TIM_OC1Init(TIM3, &TIM_OCInitStructure);
  TIM_OC1PreloadConfig(TIM3, TIM_OCPreload_Enable);
理论上应该是没问题的，可是用示波器看时发现一会儿有波形一会儿没波形。附上了图，原子大哥帮忙看看，谢谢，这个问题挺奇怪的

正点原子

代码其他地方有问题

yuanxinfei

回复【2楼】正点原子:
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可能是其他地方代码问题，原子大哥说的对