STM32CubeF1

/**
  @page UART_Printf UART Printf example
  
  @verbatim
  ******************** (C) COPYRIGHT 2016 STMicroelectronics *******************
  * @file    UART/UART_Printf/readme.txt 
  * @author  MCD Application Team
  * @brief   Description of the UART Hyperterminal example.
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2016 STMicroelectronics.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by ST under BSD 3-Clause license,
  * the "License"; You may not use this file except in compliance with the
  * License. You may obtain a copy of the License at:
  *                        opensource.org/licenses/BSD-3-Clause
  *
  ******************************************************************************
  @endverbatim

@par Example Description 

Re-routing of the C library printf function to the UART.
The UART outputs a message on the HyperTerminal.

Board: STM3210C-EVAL RevC
Tx Pin: PD.05
Rx Pin: PD.06
   _________________________ 
  |           ______________|                       _______________
  |          |USART         |                      | HyperTerminal |
  |          |              |                      |               |
  |          |           TX |______________________|RX             |
  |          |              |                      |               |
  |          |              |     RS232 Cable      |               |             
  |          |              |                      |               |
  |          |           RX |______________________|TX             |          
  |          |              |                      |               |           
  |          |______________|                      |_______________|          
  |                         |                       
  |                         |                    
  |                         |                      
  |                         |                      
  |_STM32_Board_____________|                      

The USART is configured as follows:
    - BaudRate = 9600 baud  
    - Word Length = 8 Bits (7 data bit + 1 parity bit)
    - One Stop Bit
    - Odd parity
    - Hardware flow control disabled (RTS and CTS signals)
    - Reception and transmission are enabled in the time

@note USARTx/UARTx instance used and associated resources can be updated in "main.h"
file depending hardware configuration used.

@note When the parity is enabled, the computed parity is inserted at the MSB
position of the transmitted data.


@par Directory contents 

  - UART/UART_Printf/Inc/stm32f1xx_hal_conf.h    HAL configuration file
  - UART/UART_Printf/Inc/stm32f1xx_it.h          Interrupt handlers header file
  - UART/UART_Printf/Inc/main.h                  Header for main.c module  
  - UART/UART_Printf/Src/stm32f1xx_it.c          Interrupt handlers
  - UART/UART_Printf/Src/main.c                  Main program
  - UART/UART_Printf/Src/stm32f1xx_hal_msp.c     HAL MSP module
  - UART/UART_Printf/Src/system_stm32f1xx.c      STM32F1xx system source file


@par Hardware and Software environment

  - This example runs on STM32F107xC devices.
    
  - This example has been tested with STM3210C-EVAL RevC board and can be
    easily tailored to any other supported device and development board.    

  - STM3210C_EVAL Set-up
    - Connect a null-modem female/female RS232 cable between the DB9 connector 
      CN6 (USART2) and PC serial port if you want to display data on the HyperTerminal.
      @note Make sure that jumper JP16 is 2-3 position (USART2_RX).

  - Hyperterminal configuration:
    - Word Length = 7 Bits
    - One Stop Bit
    - Odd parity
    - BaudRate = 9600 baud
    - flow control: None 

@par How to use it ? 

In order to make the program work, you must do the following :
 - Open your preferred toolchain 
 - Rebuild all files and load your image into target memory
 - Run the example


 * <h3><center>&copy; COPYRIGHT STMicroelectronics</center></h3>
 */