串口发送问题

void usart_test(void)

{
static uint8_t flag = 0;
char text01[20];

sprintf(text01,"Lan Qiao Bei\r\n");

HAL_UART_Transmit(&huart1,(uint8_t*)text01,sizeof(text01),HAL_MAX_DELAY);
HAL_UART_Transmit(&huart2,(uint8_t*)text01,sizeof(text01),HAL_MAX_DELAY);

flag++;

sprintf(text,"%d",flag);
LCD_DisplayStringLine(Line5,(unsigned char*)text);

HAL_Delay(1000);

}

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();

/* USER CODE BEGIN SysInit /
/ USER CODE END SysInit */

/* Initialize all configured peripherals /
MX_GPIO_Init();
MX_TIM2_Init();
MX_TIM3_Init();
MX_TIM4_Init();
MX_ADC1_Init();
MX_ADC2_Init();
MX_USART1_UART_Init();
MX_USART2_UART_Init();
/ USER CODE BEGIN 2 */
HAL_GPIO_WritePin(GPIOD,GPIO_PIN_2,GPIO_PIN_RESET);
LCD_Init();

LCD_SetBackColor(Black);
LCD_SetTextColor(White);
LCD_Clear(Black);

LCD_DisplayStringLine(Line0,(unsigned char*)"helloworld");

HAL_TIM_Base_Start_IT(&htim4);
HAL_TIM_IC_Start_IT(&htim2,TIM_CHANNEL_1);

// HAL_TIM_IC_Start(&htim3,TIM_CHANNEL_1);
HAL_ADC_Start(&hadc1);
HAL_ADC_Start(&hadc2);

/* USER CODE END 2 */

/* Infinite loop /
/ USER CODE BEGIN WHILE */
while (1)
{

  usart_test();

	
/* USER CODE END WHILE */

/* USER CODE BEGIN 3 */

}
这是什么问题啊，为什么串口发送不了数据