我可以通过kermit，putty和python串口连接到/dev/ttyACM 0，但无法在终端上显示消息。我正在使用stm32 f091 rc nucleo板构建一个项目。

Connecting to /dev/ttyACM0, speed 38400
 Escape character: Ctrl-\ (ASCII 28, FS): enabled
Type the escape character followed by C to get back,
or followed by ? to see other options

我可以看到该端口显示在/dev文件夹中，但我不确定我是否真的连接到该端口。

static void MX_USART2_UART_Init(void)
{

    UART_HandleTypeDef huart2;
  /* USER CODE BEGIN USART2_Init 0 */

  /* USER CODE END USART2_Init 0 */

  /* USER CODE BEGIN USART2_Init 1 */

  /* USER CODE END USART2_Init 1 */
    huart2.Instance = USART2;
    huart2.Init.BaudRate = 38400;
    huart2.Init.WordLength = UART_WORDLENGTH_8B;
    huart2.Init.StopBits = UART_STOPBITS_1;
    huart2.Init.Parity = UART_PARITY_NONE;
    huart2.Init.Mode = UART_MODE_TX_RX;
    huart2.Init.HwFlowCtl = UART_HWCONTROL_NONE;
    huart2.Init.OverSampling = UART_OVERSAMPLING_16;
    huart2.Init.OneBitSampling = UART_ONEBIT_SAMPLING_DISABLED;
    huart2.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
    HAL_UART_Init(&huart2);

    /* USER CODE BEGIN USART2_Init 2 */

  /* USER CODE END USART2_Init 2 */

}

UART init函数参数与我通过Putty和Kermit进行的配置相匹配。
关于程序，我有一个主函数调用UART_Transmit函数，代码如下。

void printWelcomeMessage(void) {
        HAL_UART_Transmit(&huart2, (uint8_t*)WELCOME_MSG, strlen(WELCOME_MSG), HAL_MAX_DELAY);
        HAL_UART_Transmit(&huart2, (uint8_t*)MAIN_MENU, strlen(MAIN_MENU), HAL_MAX_DELAY);
}