STM32H7B3I-DK上的USART1输出数据失败咋办

我在尝试通过 STM32H7B3I-DK 上的 USART1 输出数据时遇到问题。根据文档 (UM2569)，USART1 是连接到 USB STLINK (CN14) 的虚拟 com 端口。所以理论上我应该能够使用 USART1 通过连接到笔记本电脑的 Mirco-USB 输出到我的串行控制台？但出于某种原因，我的串行控制台根本没有输出任何内容。我已经检查过 STM32CubeMX 和串行控制台中 USART1 的设置是否匹配，所以我假设它与我的串行控制台设置无关。
这是我的主循环和 USART1 的代码片段。代码基本上是由 STM32CubeMX 在我在“板选择器”中选择了正确的发现板后生成的。

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();
/* Configure the peripherals common clocks */
PeriphCommonClock_Config();
/* USER CODE BEGIN SysInit */
/* USER CODE END SysInit */
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_FMC_Init();
MX_I2C1_Init();
MX_I2C4_Init();
MX_I2S6_Init();
MX_LTDC_Init();
MX_OCTOSPI1_Init();
MX_RTC_Init();
MX_SDMMC1_SD_Init();
MX_SPI1_Init();
MX_SPI2_Init();
MX_USART1_UART_Init();
MX_USART2_UART_Init();
/* USER CODE BEGIN 2 */
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
uint8_t Test[] = "Hello World !!!rn"; //Data to send
HAL_UART_Transmit(&huart1,Test,sizeof(Test),10);// Sending in normal mode
HAL_Delay(1000);
}
/* USER CODE END 3 */
}
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.Init.ClockPrescaler = UART_PRESCALER_DIV1;
huart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
if (HAL_UART_Init(&huart1) != HAL_OK)
{
Error_Handler();
}
if (HAL_UARTEx_SetTxFifoThreshold(&huart1, UART_TXFIFO_THRESHOLD_1_8) != HAL_OK)
{
Error_Handler();
}
if (HAL_UARTEx_SetRxFifoThreshold(&huart1, UART_RXFIFO_THRESHOLD_1_8) != HAL_OK)
{
Error_Handler();
}
if (HAL_UARTEx_DisableFifoMode(&huart1) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN USART1_Init 2 */
/* USER CODE END USART1_Init 2 */
}