完成莫尔斯电码功能

Signed-off-by: kevin <kevin@lmve.net>

Core/Inc/main.h

@@ -50,6 +50,8 @@ extern "C" {
 
 /* USER CODE END EM */
 
+void HAL_TIM_MspPostInit(TIM_HandleTypeDef *htim);
+
 /* Exported functions prototypes ---------------------------------------------*/
 void Error_Handler(void);
 

Core/Inc/stm32f1xx_it.h

@@ -56,6 +56,7 @@ void SVC_Handler(void);
 void DebugMon_Handler(void);
 void PendSV_Handler(void);
 void SysTick_Handler(void);
+void TIM4_IRQHandler(void);
 void TIM6_IRQHandler(void);
 /* USER CODE BEGIN EFP */
 

Core/Src/main.c

@@ -44,6 +44,7 @@ I2C_HandleTypeDef hi2c2;
 
 SPI_HandleTypeDef hspi1;
 
+TIM_HandleTypeDef htim4;
 TIM_HandleTypeDef htim6;
 
 SRAM_HandleTypeDef hsram1;
@@ -59,6 +60,7 @@ static void MX_FSMC_Init(void);
 static void MX_I2C2_Init(void);
 static void MX_TIM6_Init(void);
 static void MX_SPI1_Init(void);
+static void MX_TIM4_Init(void);
 /* USER CODE BEGIN PFP */
 
 /* USER CODE END PFP */
@@ -106,6 +108,7 @@ int main(void)
   MX_I2C2_Init();
   MX_TIM6_Init();
   MX_SPI1_Init();
+  MX_TIM4_Init();
   /* USER CODE BEGIN 2 */
   main_app();
   /* USER CODE END 2 */
@@ -231,6 +234,65 @@ static void MX_SPI1_Init(void)
 
 }
 
+/**
+  * @brief TIM4 Initialization Function
+  * @param None
+  * @retval None
+  */
+static void MX_TIM4_Init(void)
+{
+
+  /* USER CODE BEGIN TIM4_Init 0 */
+
+  /* USER CODE END TIM4_Init 0 */
+
+  TIM_ClockConfigTypeDef sClockSourceConfig = {0};
+  TIM_MasterConfigTypeDef sMasterConfig = {0};
+  TIM_OC_InitTypeDef sConfigOC = {0};
+
+  /* USER CODE BEGIN TIM4_Init 1 */
+
+  /* USER CODE END TIM4_Init 1 */
+  htim4.Instance = TIM4;
+  htim4.Init.Prescaler = 0;
+  htim4.Init.CounterMode = TIM_COUNTERMODE_UP;
+  htim4.Init.Period = 65535;
+  htim4.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
+  htim4.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
+  if (HAL_TIM_Base_Init(&htim4) != HAL_OK)
+  {
+    Error_Handler();
+  }
+  sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
+  if (HAL_TIM_ConfigClockSource(&htim4, &sClockSourceConfig) != HAL_OK)
+  {
+    Error_Handler();
+  }
+  if (HAL_TIM_PWM_Init(&htim4) != HAL_OK)
+  {
+    Error_Handler();
+  }
+  sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
+  sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
+  if (HAL_TIMEx_MasterConfigSynchronization(&htim4, &sMasterConfig) != HAL_OK)
+  {
+    Error_Handler();
+  }
+  sConfigOC.OCMode = TIM_OCMODE_PWM1;
+  sConfigOC.Pulse = 0;
+  sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
+  sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
+  if (HAL_TIM_PWM_ConfigChannel(&htim4, &sConfigOC, TIM_CHANNEL_3) != HAL_OK)
+  {
+    Error_Handler();
+  }
+  /* USER CODE BEGIN TIM4_Init 2 */
+
+  /* USER CODE END TIM4_Init 2 */
+  HAL_TIM_MspPostInit(&htim4);
+
+}
+
 /**
   * @brief TIM6 Initialization Function
   * @param None

Core/Src/stm32f1xx_hal_msp.c

@@ -58,7 +58,9 @@
 /* USER CODE BEGIN 0 */
 
 /* USER CODE END 0 */
-/**
+
+void HAL_TIM_MspPostInit(TIM_HandleTypeDef *htim);
+                    /**
   * Initializes the Global MSP.
   */
 void HAL_MspInit(void)
@@ -224,7 +226,21 @@ void HAL_SPI_MspDeInit(SPI_HandleTypeDef* hspi)
 */
 void HAL_TIM_Base_MspInit(TIM_HandleTypeDef* htim_base)
 {
-  if(htim_base->Instance==TIM6)
+  if(htim_base->Instance==TIM4)
+  {
+  /* USER CODE BEGIN TIM4_MspInit 0 */
+
+  /* USER CODE END TIM4_MspInit 0 */
+    /* Peripheral clock enable */
+    __HAL_RCC_TIM4_CLK_ENABLE();
+    /* TIM4 interrupt Init */
+    HAL_NVIC_SetPriority(TIM4_IRQn, 0, 0);
+    HAL_NVIC_EnableIRQ(TIM4_IRQn);
+  /* USER CODE BEGIN TIM4_MspInit 1 */
+
+  /* USER CODE END TIM4_MspInit 1 */
+  }
+  else if(htim_base->Instance==TIM6)
   {
   /* USER CODE BEGIN TIM6_MspInit 0 */
 
@@ -241,6 +257,30 @@ void HAL_TIM_Base_MspInit(TIM_HandleTypeDef* htim_base)
 
 }
 
+void HAL_TIM_MspPostInit(TIM_HandleTypeDef* htim)
+{
+  GPIO_InitTypeDef GPIO_InitStruct = {0};
+  if(htim->Instance==TIM4)
+  {
+  /* USER CODE BEGIN TIM4_MspPostInit 0 */
+
+  /* USER CODE END TIM4_MspPostInit 0 */
+
+    __HAL_RCC_GPIOB_CLK_ENABLE();
+    /**TIM4 GPIO Configuration
+    PB8     ------> TIM4_CH3
+    */
+    GPIO_InitStruct.Pin = GPIO_PIN_8;
+    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
+    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
+    HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
+
+  /* USER CODE BEGIN TIM4_MspPostInit 1 */
+
+  /* USER CODE END TIM4_MspPostInit 1 */
+  }
+
+}
 /**
 * @brief TIM_Base MSP De-Initialization
 * This function freeze the hardware resources used in this example
@@ -249,7 +289,21 @@ void HAL_TIM_Base_MspInit(TIM_HandleTypeDef* htim_base)
 */
 void HAL_TIM_Base_MspDeInit(TIM_HandleTypeDef* htim_base)
 {
-  if(htim_base->Instance==TIM6)
+  if(htim_base->Instance==TIM4)
+  {
+  /* USER CODE BEGIN TIM4_MspDeInit 0 */
+
+  /* USER CODE END TIM4_MspDeInit 0 */
+    /* Peripheral clock disable */
+    __HAL_RCC_TIM4_CLK_DISABLE();
+
+    /* TIM4 interrupt DeInit */
+    HAL_NVIC_DisableIRQ(TIM4_IRQn);
+  /* USER CODE BEGIN TIM4_MspDeInit 1 */
+
+  /* USER CODE END TIM4_MspDeInit 1 */
+  }
+  else if(htim_base->Instance==TIM6)
   {
   /* USER CODE BEGIN TIM6_MspDeInit 0 */
 

Core/Src/stm32f1xx_it.c

@@ -56,6 +56,7 @@
 /* USER CODE END 0 */
 
 /* External variables --------------------------------------------------------*/
+extern TIM_HandleTypeDef htim4;
 extern TIM_HandleTypeDef htim6;
 /* USER CODE BEGIN EV */
 
@@ -199,6 +200,20 @@ void SysTick_Handler(void)
 /* please refer to the startup file (startup_stm32f1xx.s).                    */
 /******************************************************************************/
 
+/**
+  * @brief This function handles TIM4 global interrupt.
+  */
+void TIM4_IRQHandler(void)
+{
+  /* USER CODE BEGIN TIM4_IRQn 0 */
+
+  /* USER CODE END TIM4_IRQn 0 */
+  HAL_TIM_IRQHandler(&htim4);
+  /* USER CODE BEGIN TIM4_IRQn 1 */
+
+  /* USER CODE END TIM4_IRQn 1 */
+}
+
 /**
   * @brief This function handles TIM6 global interrupt.
   */