Failed to communicate with device using Nucleo uart

[Ahajr.1]

Hello,

I'm using nucleo board f410rb to communicate with another device via UART, my Baudrate is correctly fixed , i checked with the builder of the device the command i should send , i wrote the following code but the device dosen't respond

uint8_t tx_buff[]={0x02, 0x00, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1F, 0xAA, 0x55, 0x00, 0x00, 0x70, 0x37};

int main(void)

{

 /* MCU Configuration--------------------------------------------------------*/

 /* Reset of all peripherals, Initializes the Flash interface and the Systick. */

 HAL_Init();

 /* Configure the system clock */

 SystemClock_Config();

 /* Initialize all configured peripherals */

 MX_GPIO_Init();

 MX_USART1_UART_Init();

 MX_USART2_UART_Init();

 /* USER CODE BEGIN WHILE */

 HAL_UART_Transmit(&huart2, (uint8_t *)com_buff,sizeof(com_buff), HAL_MAX_DELAY);

 HAL_UART_Transmit(&huart2, (uint8_t *)msg_screen,sizeof(msg_screen), HAL_MAX_DELAY);

 while (1)

 {

  /* USER CODE END WHILE */

 UartStatus = HAL_UART_Transmit(&huart1, (uint8_t *)tx_buff,sizeof(tx_buff), HAL_MAX_DELAY);

 if (UartStatus != HAL_OK) {

 HAL_Delay(10000);

 }

HAL_Delay(10);

  /* USER CODE BEGIN 3 */

 }

I'm starting to have doubts on how uart transmit buffer works but i don't know where is my mistake

Thank you in advance

[Ahajr.1]

This issue was solved by changing some byte on buffer command.

Now i'm able to see my device responding using scope.

Using HAL_UART_Receive the read buffer is always empty and the function stuck on :

if (UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_RXNE, RESET, tickstart, Timeout) != HAL_OK)

   {

    return HAL_TIMEOUT;

   }

Does any one have an idea about that?