定时器1ch4(PA11)产生PWM ,在STM32正常，MM32卡死，是什么原因？

只看该作者 · 2022-7-8 09:32

定时器1ch4(PA11)产生PWM ,在STM32正常，MM32卡死，是什么原因？
（使用MM32库）
void Tim1_Init()
{
  /* TIM1 Peripheral Configuration */
      GPIO_InitTypeDef GPIO_InitStructure;
      TIM_TimeBaseInitTypeDef  TIM1_TimeBaseStructure;
      TIM_OCInitTypeDef  TIM1_OCInitStructure;
      TIM_BDTRInitTypeDef TIM1_BDTRInitStructure;

      RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_AFIO, ENABLE);

      /* TIM1 clock enable */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);

TIM_DeInit(TIM1);

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);

  /* Time Base configuration */

  TIM1_TimeBaseStructure.TIM_Prescaler = 10;//0x0;             分频
  TIM1_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
  TIM1_TimeBaseStructure.TIM_Period = 6500-1;  //6500-1? 3600-1;
  TIM1_TimeBaseStructure.TIM_ClockDivision = 0x0;
  TIM1_TimeBaseStructure.TIM_RepetitionCounter = 0x0;

  TIM_TimeBaseInit(TIM1,&TIM1_TimeBaseStructure);

  // Channel 4 and 4 Configuration in PWM mode
  TIM1_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2;
  TIM1_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
  TIM1_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;
  TIM1_OCInitStructure.TIM_Pulse = 1800;
  TIM1_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;
  TIM1_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_Low;
  TIM1_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;
  TIM1_OCInitStructure.TIM_OCNIdleState = TIM_OCIdleState_Reset;

  TIM1_OCInitStructure.TIM_Pulse = 1800 ;       //50%
  TIM_OC4PreloadConfig(TIM1, TIM_OCPreload_Enable);  //使能TIMx在CCR2上的预装载寄存器

  TIM_OC4Init(TIM1,&TIM1_OCInitStructure);

  TIM_Cmd(TIM1,ENABLE);
  TIM_CtrlPWMOutputs(TIM1,ENABLE); //TIM1_CH4 PWM输出

}

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