STM32F767 通用定时器 PWM输入模式

原创已于 2022-12-01 21:18:04 修改 · 199 阅读

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于 2021-10-12 22:49:13 首次发布

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TIM_HandleTypeDef htim9;

UART_HandleTypeDef huart1;

/* USER CODE BEGIN PV */

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_TIM9_Init(void);
static void MX_USART1_UART_Init(void);
/* USER CODE BEGIN PFP */

/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */

/* USER CODE END 0 */

/**
  * @brief  The application entry point.
  * @retval int
  */
int main(void)
{
  /* USER CODE BEGIN 1 */

  /* USER CODE END 1 */

  /* MCU Configuration--------------------------------------------------------*/

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();

  /* USER CODE BEGIN Init */

  /* USER CODE END Init */

  /* Configure the system clock */
  SystemClock_Config();

  /* USER CODE BEGIN SysInit */

  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_TIM9_Init();
  MX_USART1_UART_Init();
  /* USER CODE BEGIN 2 */
	
	HAL_TIM_IC_Start_IT(&htim9, TIM_CHANNEL_1);
	//HAL_TIM_IC_Start_IT(&htim9, TIM_CHANNEL_2);
	HAL_TIM_IC_Start(&htim9, TIM_CHANNEL_2);
	
  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
    /* USER CODE END WHILE */
		HAL_GPIO_WritePin(GPIOB, GPIO_PIN_0, GPIO_PIN_SET);
		HAL_Delay(500);
		HAL_GPIO_WritePin(GPIOB, GPIO_PIN_0, GPIO_PIN_RESET);
		HAL_Delay(1000);
    /* USER CODE BEGIN 3 */
  }
  /* USER CODE END 3 */
}

/**
  * @brief TIM9 Initialization Function
  * @param None
  * @retval None
  */
static void MX_TIM9_Init(void)
{

  /* USER CODE BEGIN TIM9_Init 0 */

  /* USER CODE END TIM9_Init 0 */

  TIM_ClockConfigTypeDef sClockSourceConfig = {0};
  TIM_SlaveConfigTypeDef sSlaveConfig = {0};
  TIM_IC_InitTypeDef sConfigIC = {0};

  /* USER CODE BEGIN TIM9_Init 1 */

  /* USER CODE END TIM9_Init 1 */
  htim9.Instance = TIM9;
  htim9.Init.Prescaler = 21600;
  htim9.Init.CounterMode = TIM_COUNTERMODE_UP;
  htim9.Init.Period = 60000;
  htim9.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
  htim9.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
  if (HAL_TIM_Base_Init(&htim9) != HAL_OK)
  {
    Error_Handler();
  }
  sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
  if (HAL_TIM_ConfigClockSource(&htim9, &sClockSourceConfig) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_TIM_IC_Init(&htim9) != HAL_OK)
  {
    Error_Handler();
  }
  sSlaveConfig.SlaveMode = TIM_SLAVEMODE_RESET;
  sSlaveConfig.InputTrigger = TIM_TS_TI1FP1;
  sSlaveConfig.TriggerPolarity = TIM_INPUTCHANNELPOLARITY_RISING;
  sSlaveConfig.TriggerFilter = 0;
  if (HAL_TIM_SlaveConfigSynchro(&htim9, &sSlaveConfig) != HAL_OK)
  {
    Error_Handler();
  }
  sConfigIC.ICPolarity = TIM_INPUTCHANNELPOLARITY_RISING;
  sConfigIC.ICSelection = TIM_ICSELECTION_DIRECTTI;
  sConfigIC.ICPrescaler = TIM_ICPSC_DIV1;
  sConfigIC.ICFilter = 0;
  if (HAL_TIM_IC_ConfigChannel(&htim9, &sConfigIC, TIM_CHANNEL_1) != HAL_OK)
  {
    Error_Handler();
  }
  sConfigIC.ICPolarity = TIM_INPUTCHANNELPOLARITY_FALLING;
  sConfigIC.ICSelection = TIM_ICSELECTION_INDIRECTTI;
  if (HAL_TIM_IC_ConfigChannel(&htim9, &sConfigIC, TIM_CHANNEL_2) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN TIM9_Init 2 */

  /* USER CODE END TIM9_Init 2 */

}

/**
  * @brief USART1 Initialization Function
  * @param None
  * @retval None
  */
static void MX_USART1_UART_Init(void)
{

  /* USER CODE BEGIN USART1_Init 0 */

  /* USER CODE END USART1_Init 0 */

  /* USER CODE BEGIN USART1_Init 1 */

  /* USER CODE END USART1_Init 1 */
  huart1.Instance = USART1;
  huart1.Init.BaudRate = 115200;
  huart1.Init.WordLength = UART_WORDLENGTH_8B;
  huart1.Init.StopBits = UART_STOPBITS_1;
  huart1.Init.Parity = UART_PARITY_NONE;
  huart1.Init.Mode = UART_MODE_TX_RX;
  huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
  huart1.Init.OverSampling = UART_OVERSAMPLING_16;
  huart1.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
  huart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
  if (HAL_UART_Init(&huart1) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN USART1_Init 2 */

  /* USER CODE END USART1_Init 2 */

}

/**
  * @brief GPIO Initialization Function
  * @param None
  * @retval None
  */
static void MX_GPIO_Init(void)
{
  GPIO_InitTypeDef GPIO_InitStruct = {0};

  /* GPIO Ports Clock Enable */
  __HAL_RCC_GPIOE_CLK_ENABLE();
  __HAL_RCC_GPIOH_CLK_ENABLE();
  __HAL_RCC_GPIOB_CLK_ENABLE();
  __HAL_RCC_GPIOA_CLK_ENABLE();

  /*Configure GPIO pin Output Level */
  HAL_GPIO_WritePin(GPIOB, GPIO_PIN_0, GPIO_PIN_RESET);

  /*Configure GPIO pin : PB0 */
  GPIO_InitStruct.Pin = GPIO_PIN_0;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_OD;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

}

/**
  * @brief This function handles TIM1 break interrupt and TIM9 global interrupt.
  */
void TIM1_BRK_TIM9_IRQHandler(void)
{
  /* USER CODE BEGIN TIM1_BRK_TIM9_IRQn 0 */

  /* USER CODE END TIM1_BRK_TIM9_IRQn 0 */
  HAL_TIM_IRQHandler(&htim9);
  /* USER CODE BEGIN TIM1_BRK_TIM9_IRQn 1 */

  /* USER CODE END TIM1_BRK_TIM9_IRQn 1 */
}

/* USER CODE BEGIN 1 */

#include <stdio.h>
#include <string.h>
void HAL_TIM_IC_CaptureCallback(TIM_HandleTypeDef *htim)
{
	char text[50];
	HAL_GPIO_TogglePin(GPIOB, GPIO_PIN_1);
	sprintf(text, "CCR1 = %d, CCR2 = %d\n", __HAL_TIM_GET_COMPARE(htim, TIM_CHANNEL_1), __HAL_TIM_GET_COMPARE(htim, TIM_CHANNEL_2)); 
	HAL_UART_Transmit(&huart1, (uint8_t*)text, strlen(text), 1000); 
}

总结：1、将PB0与PE5通过杜邦线短接，PB0为LED IO，PE5为TIM9_CH1 IO，在while()循环中通过LED闪烁输出一个PWM信号，与TIM9_CH1连接
2、以下为TIM9_CUBEMX设置
在这里插入图片描述
3、MX_TIM9_Init();为TIM9初始化，HAL_TIM_IC_Start_IT(&htim9, TIM_CHANNEL_1);使能TIM9_CH1捕获输入使能及其中断，HAL_TIM_IC_Start(&htim9, TIM_CHANNEL_2);使能TIM9_CH2捕获输入使能
4、
5、
6、串口输出结果