RTT studio 添加串口V2报错

发布于 2022-05-04 12:30:09 浏览：1685 订阅该版

lchnu 2022-05-04

Witness, Understand, Skill

我刚刚尝试了一下，在RT-Stduio环境下，使用STM32L431+ RT-Thread 4.0.5移植V2成功。电路上USART2作为Console输出。

具体流程如下：

1.新建工程
![1.png](https://oss-club.rt-thread.org/uploads/20220504/185b74f4d5b559d3d30d5f12114b2bc8.png.webp)

2.使能V2
![2.png](https://oss-club.rt-thread.org/uploads/20220504/a63c79d7f2ab6aa35d4b56347b74dedb.png)

3.编译出错
![3.png](https://oss-club.rt-thread.org/uploads/20220504/cedce052c1440f44b4dee1f4cb6677fe.png.webp)

4.将BSP中的drv_usart_v2.c/.h分别复制到你的工程中drivers与dirvers/include目录，且删除工程目录中的drv_usart.c

![4.png](https://oss-club.rt-thread.org/uploads/20220504/4800029d53e06d8684e3007e8a8e6105.png)

5.删掉uart_config.h中的tx,rx pin

![5.png](https://oss-club.rt-thread.org/uploads/20220504/ad7c23e83c4458508f6153ce5ed2b01b.png.webp)

6.board.c中添加USART硬件初始化
```c
void HAL_UART_MspInit(UART_HandleTypeDef* uartHandle)
{

GPIO_InitTypeDef GPIO_InitStruct = {0};
  RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};
  if(uartHandle->Instance==USART2)
  {
  /* USER CODE BEGIN USART2_MspInit 0 */

/* USER CODE END USART2_MspInit 0 */
    /* USART2 clock enable */
    __HAL_RCC_USART2_CLK_ENABLE();

__HAL_RCC_GPIOA_CLK_ENABLE();
    /**USART2 GPIO Configuration
    PA2     ------> USART2_TX
    PA3     ------> USART2_RX
    */
    GPIO_InitStruct.Pin = GPIO_PIN_2|GPIO_PIN_3;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
    GPIO_InitStruct.Alternate = GPIO_AF7_USART2;
    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

/* USER CODE BEGIN USART2_MspInit 1 */

/* USER CODE END USART2_MspInit 1 */
  }
}

void HAL_UART_MspDeInit(UART_HandleTypeDef* uartHandle)
{

if(uartHandle->Instance==USART2)
  {
  /* USER CODE BEGIN USART2_MspDeInit 0 */

/* USER CODE END USART2_MspDeInit 0 */
    /* Peripheral clock disable */
    __HAL_RCC_USART2_CLK_DISABLE();

/**USART2 GPIO Configuration
    PA2     ------> USART2_TX
    PA3     ------> USART2_RX
    */
    HAL_GPIO_DeInit(GPIOA, GPIO_PIN_2|GPIO_PIN_3);

/* USER CODE BEGIN USART2_MspDeInit 1 */

/* USER CODE END USART2_MspDeInit 1 */
  }
}
```

7.修改board.h

```c
#define BSP_USING_UART2
#define BSP_UART2_RX_BUFSIZE   512
#define BSP_UART2_TX_BUFSIZE   0
```

8.顺利运行
![image.png](https://oss-club.rt-thread.org/uploads/20220504/11c9880763e90d294c2915b36d45ee0d.png)

注：Console部分使用普通的轮询输出，所以BSP_UART2_TX_BUFSIZE设置为了0。