2019年07月30日 | stm32f4手动添加HAL库模块

以uart为例

首先打开stm32f4xx_hal_conf.h中的define：

然后在工程中添加相关的.c文件

定义模块初始化函数，并在main中调用

/* USART3 init function */

static void MX_USART3_UART_Init(void)

{

  huart3.Instance = USART3;

  huart3.Init.BaudRate = 19200;//9600;//

  huart3.Init.WordLength = UART_WORDLENGTH_8B;

  huart3.Init.StopBits = UART_STOPBITS_1;

  huart3.Init.Parity = UART_PARITY_NONE;

  huart3.Init.Mode = UART_MODE_TX_RX;

  huart3.Init.HwFlowCtl = UART_HWCONTROL_NONE;

  huart3.Init.OverSampling = UART_OVERSAMPLING_16;

  if (HAL_UART_Init(&huart3) != HAL_OK)

  {

    _Error_Handler(__FILE__, __LINE__);

  }

}

在stm32f4xx_hal_msp.c中定义模块的MspInit和Deinit(一般没啥用，主要是Init)设置gpio，dma及中断等配置

void HAL_UART_MspInit(UART_HandleTypeDef* huart)

{

  GPIO_InitTypeDef GPIO_InitStruct;

  if(huart->Instance==USART3)

  {

  /* USER CODE BEGIN USART3_MspInit 0 */

  /* USER CODE END USART3_MspInit 0 */

    /* Peripheral clock enable */

    __HAL_RCC_USART3_CLK_ENABLE();

    /**USART3 GPIO Configuration    

    PC10     ------> USART3_TX

    PC11     ------> USART3_RX 

    */

    GPIO_InitStruct.Pin = GPIO_PIN_10|GPIO_PIN_11;

    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;

    GPIO_InitStruct.Pull = GPIO_PULLUP;

    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;

    GPIO_InitStruct.Alternate = GPIO_AF7_USART3;

    HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);

    /* USART3 DMA Init */

    /* USART3_TX Init */

    hdma_usart3_tx.Instance = DMA1_Stream3;

    hdma_usart3_tx.Init.Channel = DMA_CHANNEL_4;

    hdma_usart3_tx.Init.Direction = DMA_MEMORY_TO_PERIPH;

    hdma_usart3_tx.Init.PeriphInc = DMA_PINC_DISABLE;

    hdma_usart3_tx.Init.MemInc = DMA_MINC_ENABLE;

    hdma_usart3_tx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;

    hdma_usart3_tx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;

    hdma_usart3_tx.Init.Mode = DMA_NORMAL;

    hdma_usart3_tx.Init.Priority = DMA_PRIORITY_LOW;

    hdma_usart3_tx.Init.FIFOMode = DMA_FIFOMODE_DISABLE;

    if (HAL_DMA_Init(&hdma_usart3_tx) != HAL_OK)

    {

      _Error_Handler(__FILE__, __LINE__);

    }

    __HAL_LINKDMA(huart,hdmatx,hdma_usart3_tx);

    /* USART3_RX Init */

    hdma_usart3_rx.Instance = DMA1_Stream1;

    hdma_usart3_rx.Init.Channel = DMA_CHANNEL_4;

    hdma_usart3_rx.Init.Direction = DMA_PERIPH_TO_MEMORY;

    hdma_usart3_rx.Init.PeriphInc = DMA_PINC_DISABLE;

    hdma_usart3_rx.Init.MemInc = DMA_MINC_ENABLE;

    hdma_usart3_rx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;

    hdma_usart3_rx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;

    hdma_usart3_rx.Init.Mode = DMA_NORMAL;

    hdma_usart3_rx.Init.Priority = DMA_PRIORITY_LOW;

    hdma_usart3_rx.Init.FIFOMode = DMA_FIFOMODE_DISABLE;

    if (HAL_DMA_Init(&hdma_usart3_rx) != HAL_OK)

    {

      _Error_Handler(__FILE__, __LINE__);

    }

    __HAL_LINKDMA(huart,hdmarx,hdma_usart3_rx);

/* USART3 interrupt Init */

HAL_NVIC_SetPriority(USART3_IRQn, 0, 0);

HAL_NVIC_EnableIRQ(USART3_IRQn);

  /* USER CODE BEGIN USART3_MspInit 1 */

  /* USER CODE END USART3_MspInit 1 */

  }

}

如果使能了中断，在stm32f4xx_it.c中定义模块中断句柄，这个文件中缺少中断句柄会导致hardfault

extern uint8_t recv_end_flag;

extern uint8_t Rx_len;

void USART3_IRQHandler(void)

{

/* USER CODE BEGIN USART3_IRQn 0 */

/* USER CODE END USART3_IRQn 0 */

HAL_UART_IRQHandler(&huart3);

/* USER CODE BEGIN USART3_IRQn 1 */

uint32_t temp;

/* 如果是串口3中断   */

if(USART3 == huart3.Instance)

{    

/* 如果是串口3IDLE中断 */

if(RESET != __HAL_UART_GET_FLAG(&huart3,UART_FLAG_IDLE))

{

/* 清除中断标志   */

__HAL_UART_CLEAR_IDLEFLAG(&huart3);

/* 停止DMA接收 */

HAL_UART_DMAStop(&huart3);

/* 获取DMA当前还有多少未填充       */

temp = __HAL_DMA_GET_COUNTER(&hdma_usart3_rx);

/* 计算串口接收到的数据个数 */

Rx_len = 100 - temp; 

recv_end_flag = 1;

}

}

  /* USER CODE END USART3_IRQn 1 */

}

在相应的位置包含stm32f4xx_hal.h文件，就可以调用模块stm32f4xx_hal_uart.h中的接口了

/* IO operation functions *******************************************************/

HAL_StatusTypeDef HAL_UART_Transmit(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size, uint32_t Timeout);

HAL_StatusTypeDef HAL_UART_Receive(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size, uint32_t Timeout);

HAL_StatusTypeDef HAL_UART_Transmit_IT(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size);

HAL_StatusTypeDef HAL_UART_Receive_IT(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size);

HAL_StatusTypeDef HAL_UART_Transmit_DMA(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size);

HAL_StatusTypeDef HAL_UART_Receive_DMA(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size);

HAL_StatusTypeDef HAL_UART_DMAPause(UART_HandleTypeDef *huart);

HAL_StatusTypeDef HAL_UART_DMAResume(UART_HandleTypeDef *huart);

HAL_StatusTypeDef HAL_UART_DMAStop(UART_HandleTypeDef *huart);