stm32F030c8t6 tim16与tim17无法输出PWM HAL库

jzffzj

stm32cubeide配置stm32f030c8t6的tim16与tim17输出pwm，实际输出一直高电平，网上找了些解决的，采用标准库，将初始化定义的结构体赋初始值0，IDE生成的代码里已经赋了初始值0.主函数使用  HAL_TIM_PWM_Start(&htim16, TIM_CHANNEL_1);   开启PWM，  使用 HAL_TIM_PWM_Stop(&htim16, TIM_CHANNEL_1); 关闭PWM无效，使用 __HAL_TIM_SET_COMPARE(&htim16, TIM_CHANNEL_1, 200); 修改占空比调试时寄存器对应的值改变了。
而且在调试时可以看到 计数器寄存器CNT的值一直在变化， 状态寄存器SR 的CC1F与UIF的值为1。示波器测试PB8与PB9一直是高电平。
PWM频率设置为1K。

/* TIM16 init function */
void MX_TIM16_Init(void)
{
  TIM_OC_InitTypeDef sConfigOC = {0};
  TIM_BreakDeadTimeConfigTypeDef sBreakDeadTimeConfig = {0};

  htim16.Instance = TIM16;
  htim16.Init.Prescaler = 48-1;
  htim16.Init.CounterMode = TIM_COUNTERMODE_UP;
  htim16.Init.Period = 1000-1;
  htim16.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
  htim16.Init.RepetitionCounter = 0;
  htim16.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_ENABLE;
  if (HAL_TIM_Base_Init(&htim16) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_TIM_PWM_Init(&htim16) != HAL_OK)
  {
    Error_Handler();
  }
  sConfigOC.OCMode = TIM_OCMODE_PWM1;
  sConfigOC.Pulse = 100;
  sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
  sConfigOC.OCNPolarity = TIM_OCNPOLARITY_HIGH;
  sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
  sConfigOC.OCIdleState = TIM_OCIDLESTATE_RESET;
  sConfigOC.OCNIdleState = TIM_OCNIDLESTATE_RESET;
  if (HAL_TIM_PWM_ConfigChannel(&htim16, &sConfigOC, TIM_CHANNEL_1) != HAL_OK)
  {
    Error_Handler();
  }
  sBreakDeadTimeConfig.OffStateRunMode = TIM_OSSR_DISABLE;
  sBreakDeadTimeConfig.OffStateIDLEMode = TIM_OSSI_DISABLE;
  sBreakDeadTimeConfig.LockLevel = TIM_LOCKLEVEL_OFF;
  sBreakDeadTimeConfig.DeadTime = 0;
  sBreakDeadTimeConfig.BreakState = TIM_BREAK_DISABLE;
  sBreakDeadTimeConfig.BreakPolarity = TIM_BREAKPOLARITY_LOW;
  sBreakDeadTimeConfig.AutomaticOutput = TIM_AUTOMATICOUTPUT_DISABLE;
  if (HAL_TIMEx_ConfigBreakDeadTime(&htim16, &sBreakDeadTimeConfig) != HAL_OK)
  {
    Error_Handler();
  }
  HAL_TIM_MspPostInit(&htim16);

}
/* TIM17 init function */
void MX_TIM17_Init(void)
{
  TIM_OC_InitTypeDef sConfigOC = {0};
  TIM_BreakDeadTimeConfigTypeDef sBreakDeadTimeConfig = {0};

  htim17.Instance = TIM17;
  htim17.Init.Prescaler = 48-1;
  htim17.Init.CounterMode = TIM_COUNTERMODE_UP;
  htim17.Init.Period = 1000-1;
  htim17.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
  htim17.Init.RepetitionCounter = 0;
  htim17.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_ENABLE;
  if (HAL_TIM_Base_Init(&htim17) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_TIM_PWM_Init(&htim17) != HAL_OK)
  {
    Error_Handler();
  }
  sConfigOC.OCMode = TIM_OCMODE_PWM1;
  sConfigOC.Pulse = 100;
  sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
  sConfigOC.OCNPolarity = TIM_OCNPOLARITY_HIGH;
  sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
  sConfigOC.OCIdleState = TIM_OCIDLESTATE_RESET;
  sConfigOC.OCNIdleState = TIM_OCNIDLESTATE_RESET;
  if (HAL_TIM_PWM_ConfigChannel(&htim17, &sConfigOC, TIM_CHANNEL_1) != HAL_OK)
  {
    Error_Handler();
  }
  sBreakDeadTimeConfig.OffStateRunMode = TIM_OSSR_DISABLE;
  sBreakDeadTimeConfig.OffStateIDLEMode = TIM_OSSI_DISABLE;
  sBreakDeadTimeConfig.LockLevel = TIM_LOCKLEVEL_OFF;
  sBreakDeadTimeConfig.DeadTime = 0;
  sBreakDeadTimeConfig.BreakState = TIM_BREAK_DISABLE;
  sBreakDeadTimeConfig.BreakPolarity = TIM_BREAKPOLARITY_LOW;
  sBreakDeadTimeConfig.AutomaticOutput = TIM_AUTOMATICOUTPUT_DISABLE;
  if (HAL_TIMEx_ConfigBreakDeadTime(&htim17, &sBreakDeadTimeConfig) != HAL_OK)
  {
    Error_Handler();
  }
  HAL_TIM_MspPostInit(&htim17);

}



void HAL_TIM_Base_MspInit(TIM_HandleTypeDef* tim_baseHandle)
{

  if(tim_baseHandle->Instance==TIM3)
  {
  /* USER CODE BEGIN TIM3_MspInit 0 */
  /* USER CODE END TIM3_MspInit 0 */
    /* TIM3 clock enable */
    __HAL_RCC_TIM3_CLK_ENABLE();
  /* USER CODE BEGIN TIM3_MspInit 1 */
  /* USER CODE END TIM3_MspInit 1 */
  }
  else if(tim_baseHandle->Instance==TIM14)
  {
  /* USER CODE BEGIN TIM14_MspInit 0 */
  /* USER CODE END TIM14_MspInit 0 */
    /* TIM14 clock enable */
    __HAL_RCC_TIM14_CLK_ENABLE();

    /* TIM14 interrupt Init */
    HAL_NVIC_SetPriority(TIM14_IRQn, 3, 0);
    HAL_NVIC_EnableIRQ(TIM14_IRQn);
  /* USER CODE BEGIN TIM14_MspInit 1 */
  /* USER CODE END TIM14_MspInit 1 */
  }
  else if(tim_baseHandle->Instance==TIM16)
  {
  /* USER CODE BEGIN TIM16_MspInit 0 */
  /* USER CODE END TIM16_MspInit 0 */
    /* TIM16 clock enable */
    __HAL_RCC_TIM16_CLK_ENABLE();
  /* USER CODE BEGIN TIM16_MspInit 1 */
  /* USER CODE END TIM16_MspInit 1 */
  }
  else if(tim_baseHandle->Instance==TIM17)
  {
  /* USER CODE BEGIN TIM17_MspInit 0 */
  /* USER CODE END TIM17_MspInit 0 */
    /* TIM17 clock enable */
    __HAL_RCC_TIM17_CLK_ENABLE();
  /* USER CODE BEGIN TIM17_MspInit 1 */
  /* USER CODE END TIM17_MspInit 1 */
  }
}



void HAL_TIM_MspPostInit(TIM_HandleTypeDef* timHandle)
{

  GPIO_InitTypeDef GPIO_InitStruct = {0};
  if(timHandle->Instance==TIM16)
  {
  /* USER CODE BEGIN TIM16_MspPostInit 0 */
  /* USER CODE END TIM16_MspPostInit 0 */
    __HAL_RCC_GPIOB_CLK_ENABLE();
    /**TIM16 GPIO Configuration
    PB8     ------> TIM16_CH1
    */
    GPIO_InitStruct.Pin = PWM_MT_Pin;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull = GPIO_PULLUP;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
    GPIO_InitStruct.Alternate = GPIO_AF2_TIM16;
    HAL_GPIO_Init(PWM_MT_GPIO_Port, &GPIO_InitStruct);

  /* USER CODE BEGIN TIM16_MspPostInit 1 */
  /* USER CODE END TIM16_MspPostInit 1 */
  }
  else if(timHandle->Instance==TIM17)
  {
  /* USER CODE BEGIN TIM17_MspPostInit 0 */
  /* USER CODE END TIM17_MspPostInit 0 */

    __HAL_RCC_GPIOB_CLK_ENABLE();
    /**TIM17 GPIO Configuration
    PB9     ------> TIM17_CH1
    */
    GPIO_InitStruct.Pin = PWM_JR_Pin;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull = GPIO_PULLUP;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
    GPIO_InitStruct.Alternate = GPIO_AF2_TIM17;
    HAL_GPIO_Init(PWM_JR_GPIO_Port, &GPIO_InitStruct);

  /* USER CODE BEGIN TIM17_MspPostInit 1 */
  /* USER CODE END TIM17_MspPostInit 1 */
  }

}

jzffzj

问题解决，上面的配置没有问题，是其他地方初始化的时候弄错GPIO口，把PWM输出的两个口又配成普通输出模式了

日渐秃兀

找一个可以配置成功的例子跟着配一下 再找呗！看看是不是露什么了