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.

[Andrew Neil]

Please see How to insert source code.

---

@PSR1 wrote:

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

---

Before getting into the extra complications of interrupts, have you proved basic connectivity with a simple polled read?

Do this first in a standalone project - no TouchGFX.

https://wiki.st.com/stm32mcu/wiki/Getting_started_with_UART

https://wiki.st.com/stm32mcu/wiki/STM32StepByStep:Step3_Introduction_to_the_UART

https://community.st.com/t5/stm32-mcus/implementing-uart-receive-and-transmit-functions-on-an-stm32/ta-p/694926 

[PSR1]

Hello Andrew Neil,

Thanks for supporting, as you mentioned i have done but the i'm facing the issue as to integrate the touch gfx designer generated FREERTOS code, 

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

i added above line in main.c , The TxData is showing on teraterm.

Thanks & Regards,

PSR.

[Andrew Neil]

So you have confirmed that both Tx & Rx work in a simple standalone project without TouchGFX or FreeRTOS?

[PSR1]

Yes, uart communication is happed in basic standalone project,
Here using Uart1_Tx= PA9, Uart1_Rx=  PA10 with interrupt enabled.

[Andrew Neil]

Thanks - good to get that clear.

---

@PSR1 wrote:

to integrate the touch gfx designer generated FREERTOS code, 

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

i added above line in main.c , The TxData is showing on teraterm.

---

So a simple blocking transmit works in FreeRTOS with TouchGFX.

What about a simple blocking receive - HAL_UART_Receive() ?

[PSR1]

Hello Andrew Neil,

Thank you for your support. I have quickly tested this code.

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);

}

Uart1 is showing data, but uart7 is not showing any data.
could you please help me to display the uart data?

Thanks

PSR

[Andrew Neil]

Again, Please see How to insert source code.

[PSR1]

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 */
}

[Andrew Neil]

So now you're using a different UART - UART7 !

As before, have you confirmed that both Tx & Rx on UART7 work in a simple standalone project without TouchGFX or FreeRTOS?