/**
  @page USART_Printf USART Printf example
  
  @verbatim
  ******************** (C) COPYRIGHT 2015 STMicroelectronics *******************
  * @file    USART/USART_Printf/readme.txt 
  * @author  MCD Application Team
  * @version V1.1.3
  * @date    15-December-2021
  * @brief   Description of the USART Printf example.
  ******************************************************************************
  *
  * Copyright (c) 2015 STMicroelectronics.
  * All rights reserved.
  *
  * This software is licensed under terms that can be found in the LICENSE file
  * in the root directory of this software component.
  * If no LICENSE file comes with this software, it is provided AS-IS.
  *
  ******************************************************************************
   @endverbatim

@par Example Description 

This example shows how to retarget the C library printf function to the USART. 
This implementation output the printf message on the Hyperterminal using  USART1 
(EVAL_COM1).

The USARTx is configured as follow:
    - BaudRate = 115200 baud  
    - Word Length = 8 Bits
    - One Stop Bit
    - No parity
    - Hardware flow control disabled (RTS and CTS signals)
    - Receive and transmit enabled

@par Directory contents 

  - USART/USART_Printf/stm32f30x_conf.h    Library Configuration file
  - USART/USART_Printf/stm32f30x_it.c      Interrupt handlers
  - USART/USART_Printf/stm32f30x_it.h      Interrupt handlers header file
  - USART/USART_Printf/main.c              Main program
  - USART/USART_Printf/system_stm32f30x.c  STM32F30x system source file
  
@note The "system_stm32f30x.c" is generated by an automatic clock configuration 
      system and can be easily customized to your own configuration. 
      To select different clock setup, use the "STM32F30x_Clock_Configuration_V1.0.0.xls" 
      provided with the AN4152 package available on <a href="http://www.st.com/internet/mcu/family/141.jsp">  ST Microcontrollers </a>
       
@par Hardware and Software environment

  - This example runs on STM32F303xC and STM32F303xE Devices.
  
  - This example has been tested with STMicroelectronics STM32303C-EVAL (STM32F30x)
    evaluation board and can be easily tailored to any other supported device 
    and development board.

  - STM32303C-EVAL Set-up
    - USART1 (EVAL_COM1)  
       - Connect a null-modem female/female RS232 cable between the DB9 connector 
         CN8(when USART1 (EVAL_COM1) is used) and PC serial port.
       
  - Hyperterminal configuration:
    - Word Length = 8 Bits
    - One Stop Bit
    - No parity
    - BaudRate = 115200 baud
    - flow control: None 

@par How to use it ? 

In order to make the program work, you must do the following :
 - Copy all source files from this example folder to the template folder under
   Projects\STM32F30x_StdPeriph_Templates
 - Open your preferred toolchain 
 - Add the following files to the project source list
   - Utilities\STM32_EVAL\STM32303C_EVAL\stm32303c_eval.c
 - Rebuild all files and load your image into target memory
 - Run the example
 
@note Known Limitations
    This example retargets the C library printf() function to the Hyperterminal
    (C library I/O redirected).
    TrueSTUDIO Lite version does not support I/O redirection, and instead
    have do-nothing stubs compiled into the C runtime library. 
    To use printf() with TrueSTUDIO Professional version, just include the
    TrueSTUDIO Minimal System calls file "syscalls.c" provided within the toolchain.
    It contains additional code to support printf() redirection. 


 */
