The only task in this example is uartPrintOutTask: 

void uartPrintOutTask( void* NotUsed)
{
  char nextByte;
  STM_UartInit(USART2, 9600, NULL, NULL);
  startReceiveInt();

  while(1)
  {
    xQueueReceive(uart2_BytesReceived, &nextByte, portMAX_DELAY);
    SEGGER_SYSVIEW_PrintfHost("%c", nextByte);
  }
}

uartPrintOutTask does the following:

• Performs all peripheral hardware initialization by calling STM_UartInit
• Starts an interrupt-based reception by calling startReceiveInt
• Consumes and prints each character as it is added to the uart2_BytesReceived queue by calling xQueueReceive