How to display the uart data on stm32f429i eval board?

[PSR1]

Hello ST,

 I'm trying  to display the uart data on stm32f429i(MB1046) eval board GUI, followed below link as 

https://controllerstech.com/touchgfx-5-data-from-uart-to-ui/,

void HAL_UARTEx_RxEventCallback(UART_HandleTypeDef *huart, uint16_t Size)

{

RxData[Size] = '\0';

if (osMessageQueueGetSpace(uartQueueHandle)>0)

{

strncpy (uartData_q->Data, (char *)RxData, Size+1);

uartData_q->size = Size+1;

osMessageQueuePut(uartQueueHandle, &uartData_q, 0, 0);

HAL_UART_Transmit(&huart1, uartData_q->Data,uartData_q->size , 1000);

}

HAL_UARTEx_ReceiveToIdle_IT(&huart1, RxData, 256);

}

void StartDefaultTask(void *argument)

{

/* USER CODE BEGIN 5 */

HAL_UARTEx_ReceiveToIdle_IT(&huart1, RxData, 256);



/* Infinite loop */

for(;;)

{

osDelay(1000);

}

/* USER CODE END 5 */

}

This code added in main.c but uart  receive interrupt is not working.

could you please help me to develop.

Thanks& Regards,

PSR.

[PSR1]

yes,

[Andrew Neil]

Right: and you've demonstrated that both UART1 and UART7 work together without FreeRTOS 7 TouchGFX?

So this code works in a standalone project:

   HAL_UART_Transmit(&huart1, TxData, 256 , 1000);

   HAL_UART_Receive (&huart7, RxData, strlen((char *)TxData), HAL_MAX_DELAY);
   HAL_UART_Transmit(&huart7, RxData, strlen((char *)RxData), 100);

?

[PSR1]

yes, this transmission working fine.

Could you please go through the attached https://controllerstech.com/touchgfx-5-data-from-uart-to-ui/ , based on this i was generated the code  and added the code. after you will get idea about task. please go through.

Thanks,

PSR

[PSR1]

Hello, Andrew Neil.

Is there any update?

Thanks &Regards,

PSR.

[Andrew Neil]

So what debugging have you done on your FreeRTOS version?

Compare & contrast against the standalone version - see where they differ.

[Karl Yamashita]

---

@PSR1 wrote:

I have quick test on attached code, please go through,
could you please me to develop uart data on stm32f429 i eval display?

Thanks ,

PSR

void StartDefaultTask(void *argument)
{
  /* USER CODE BEGIN 5 */
	   HAL_UART_Transmit(&huart1, TxData, 256 , 1000);

	   HAL_UART_Receive(&huart7, RxData, strlen((char *)TxData), HAL_MAX_DELAY);
          HAL_UART_Transmit(&huart7, RxData, strlen((char *)RxData), 100);
  /* Infinite loop */
  for(;;)
  {
    osDelay(1000);
  }
  /* USER CODE END 5 */
}

---

Not sure why FreeRTOS would have anything to do with UART7 not working, given the code is before the for loop?

The only thing I can think of is if your RxData doesn't start with characters, then the strlen will return 0. Calling HAL_UART_Transmit would not send any data

So are you sure RxData has a string and doesn't start with a null?