RTOS/TM4C1230H6PM: Implementing/using hardware flow control in TI RTOS 2.16 on UART1

Hi Shashank,

I know TivaWare supports flow control for UART, however, I am not sure whether the TI-RTOS drivers support flow control.

There is a suitable solution without flow control and TI-RTOS drivers.

Use callback mode for uart and read one character at a time. In your callback, you can either process each byte at a time, or push the data to your main task for analysis.

Below is the pseudo-code that would push data to your processing task

// uart task
Void YourTask(UArg arg0, UArg arg1)
{
  //1- initialize uart
  //2- configure uart in read callback mode
  //3- perform a first read (with 1 byte length)
  
  while (1)
  {
    // wait for each byte
    Sempahore_pend(uartSemaphore);
    
    // process each byte here
  }
}

// read callback
Void UART_Callback_read (UART_Handle handle, void *buffer, int size)
{
  // store data somewhere for processing

  // notify main task
  Semaphore_post(uartSemaphore);

  // Read again (with 1 byte length)
  UART_read();
}

I hope this helps

Michel

Hello,

As per what Michel Solecki suggested, I implemented the logic for receiving the data ONE byte at a time. I also implemented the logic for resetting the pointer to the buffer.

After reading about some bytes from UART the stack of the task overflows.

I am also calling he UART readCancel once I receive the Expected response.

How can I make sure that stack doesn't overflows?

Thanks,
Shashank

Hi Shashank,

Can you show us come code so we can see what you have done that could possibly cause a stack overflow?

Regards,

Michel