关于STM32F407VGT6输出四路PWM的问题 - 平头弟

关于STM32F407VGT6输出四路PWM的问题

2019-07-20 00:42发布

站内问答 / STM32/STM8

4976 5

大佬们好，下面的代码只有TIM1_CH1可以输出PWM波，这是为什么呢？其他的TIM9_CH1 TIM4_CH1 TIM5_CH1都不能输出波形，是代码哪里错了吗？谢谢大佬们了。

[mw_shl_code=c,true]
void MOTOR_TIM_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;
TIM_OCInitTypeDef TIM_OCInitStructure;

RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM9 | RCC_APB2Periph_TIM1,ENABLE);//max 84MHz
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM4 | RCC_APB1Periph_TIM5,ENABLE);//max 42MHz
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA | RCC_AHB1Periph_GPIOD | RCC_AHB1Periph_GPIOE,ENABLE);

TIM_DeInit(TIM1);
TIM_DeInit(TIM4);
TIM_DeInit(TIM5);
TIM_DeInit(TIM9);

GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1;
GPIO_Init(GPIOA,&GPIO_InitStructure);

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5;
GPIO_Init(GPIOE,&GPIO_InitStructure);

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;
GPIO_Init(GPIOD,&GPIO_InitStructure);

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
GPIO_Init(GPIOA,&GPIO_InitStructure);

TIM_TimeBaseInitStructure.TIM_Prescaler = 168-1;
TIM_TimeBaseInitStructure.TIM_ClockDivision = TIM_CKD_DIV1;
TIM_TimeBaseInitStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInitStructure.TIM_Period = 1000-1;
TIM_TimeBaseInitStructure.TIM_RepetitionCounter=0;
TIM_TimeBaseInit(TIM9,&TIM_TimeBaseInitStructure);
TIM_TimeBaseInit(TIM1,&TIM_TimeBaseInitStructure);

TIM_TimeBaseInitStructure.TIM_Prescaler = 84-1;
TIM_TimeBaseInit(TIM4,&TIM_TimeBaseInitStructure);
TIM_TimeBaseInit(TIM5,&TIM_TimeBaseInitStructure);

TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; //选择定时器模式:TIM脉冲宽度调制模式2
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; //比较输出使能
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low; //输出极性:TIM输出比较极性低
TIM_OCInitStructure.TIM_OCIdleState=TIM_OCIdleState_Set; //空闲高电平
TIM_OCInitStructure.TIM_Pulse = 500;
TIM_OC1Init(TIM9, &TIM_OCInitStructure);    //TIM9_CH1
TIM_OC1Init(TIM1, &TIM_OCInitStructure);    //TIM1_CH1
TIM_OC1Init(TIM4, &TIM_OCInitStructure);    //TIM4_CH1
TIM_OC2Init(TIM5, &TIM_OCInitStructure);    //TIM5_CH2

TIM_OC1PreloadConfig(TIM9, TIM_OCPreload_Enable);  //使能TIM9在CCR1上的预装载寄存器
TIM_OC1PreloadConfig(TIM1, TIM_OCPreload_Enable);  //使能TIM1在CCR1上的预装载寄存器
TIM_OC1PreloadConfig(TIM4, TIM_OCPreload_Enable);  //使能TIM4在CCR1上的预装载寄存器
TIM_OC2PreloadConfig(TIM5, TIM_OCPreload_Enable);  //使能TIM5在CCR2上的预装载寄存器

  TIM_ARRPreloadConfig(TIM9,ENABLE);
  TIM_ARRPreloadConfig(TIM1,ENABLE);
  TIM_ARRPreloadConfig(TIM4,ENABLE);
  TIM_ARRPreloadConfig(TIM5,ENABLE);

TIM_Cmd(TIM9, ENABLE);  //使能TIM9
TIM_Cmd(TIM1, ENABLE);  //使能TIM1
TIM_Cmd(TIM4, ENABLE);  //使能TIM4
TIM_Cmd(TIM5, ENABLE);  //使能TIM5

TIM_CtrlPWMOutputs(TIM1, ENABLE);

}[/mw_shl_code]

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5条回答

1楼-- · 2019-07-20 03:47

精彩回答 2 元偷偷看……

2楼-- · 2019-07-20 09:19

awsawzj 发表于 2019-6-3 17:15
TIM_CtrlPWMOutputs(TIM1, ENABLE);为啥这个只有TIM1使能

不是高级定时器才需要这个设置吗

3楼-- · 2019-07-20 13:48

awsawzj 发表于 2019-6-3 17:15
TIM_CtrlPWMOutputs(TIM1, ENABLE);为啥这个只有TIM1使能

/**
  * @brief  Enables or disables the TIM peripheral Main Outputs.
  * @param  TIMx: where x can be 1 or 8 to select the TIMx peripheral.
  * @param  NewState: new state of the TIM peripheral Main Outputs.
  *       This parameter can be: ENABLE or DISABLE.
  * @retval None
  */
void TIM_CtrlPWMOutputs(TIM_TypeDef* TIMx, FunctionalState NewState)
{
  /* Check the parameters */
  assert_param(IS_TIM_LIST4_PERIPH(TIMx));
  assert_param(IS_FUNCTIONAL_STATE(NewState));

  if (NewState != DISABLE)
  {
/* Enable the TIM Main Output */
TIMx->BDTR |= TIM_BDTR_MOE;
  }
  else
  {
/* Disable the TIM Main Output */
TIMx->BDTR &= (uint16_t)~TIM_BDTR_MOE;
  }
}

4楼-- · 2019-07-20 15:21

精彩回答 2 元偷偷看……

5楼-- · 2019-07-20 15:24

精彩回答 2 元偷偷看……

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