/**
  @page USART_IrDA_Receive USART_IrDA_Receive
  
  @verbatim
  ******************** (C) COPYRIGHT 2009 STMicroelectronics *******************
  * @file    USART/IrDA/Receive/readme.txt 
  * @author  MCD Application Team
  * @version V3.1.2
  * @date    09/28/2009
  * @brief   Description of the USART IrDA Receive Example.
  ******************************************************************************
  * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
  * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
  * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
  * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
  * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
  * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
  ******************************************************************************
   @endverbatim

@par Example Description 

This example provides a basic communication USARTy IrDA receive mode. Four leds
are used to show which byte is received. USARTy can be USART3 or USART2 depending
on the STMicroelectronics EVAL board you are using.

  - LED1 toggle when 0x05 is received
  - LED2 toggle when 0x02 is received
  - LED3 toggle when 0x03 is received
  - LED4 toggle when 0x04 is received
  - LED1, LED2, LED3 and LED4 toggle when 0x01 is received        

USARTy 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

The USART IrDA example provides two IrDA program: transmitter&receiver and requires two boards
to be able to run the full demonstration:
 - one board will act as IrDA transmitter
 - one board will act as IrDA receiver


@par Directory contents 

  - USART/IrDA/Receive/platform_config.h    Evaluation board specific configuration file
  - USART/IrDA/Receive/stm32f10x_conf.h     Library Configuration file
  - USART/IrDA/Receive/stm32f10x_it.h       Interrupt handlers header file
  - USART/IrDA/Receive/stm32f10x_it.c       Interrupt handlers
  - USART/IrDA/Receive/main.c               Main program


@par Hardware and Software environment 

  - This example runs on STM32F10x Connectivity line, High-Density, Medium-Density 
    and Low-Density Devices.
  
  - This example has been tested with STMicroelectronics STM3210C-EVAL (STM32F10x 
    Connectivity line), STM3210E-EVAL (STM32F10x High-Density) and STM3210B-EVAL
    (STM32F10x Medium-Density) evaluation boards and can be easily tailored to
    any other supported device and development board.
    To select the STMicroelectronics evaluation board used to run the example, 
    uncomment the corresponding line in USART/IrDA/Receive/platform_config.h or stm32_eval.h file

  - STM3210C-EVAL Set-up 
    - Use an IrDA tranceiver connected to the USART2 Tx and Rx pins (U12 
      connector, JP16 should be in position 1<-->2).
    - Use LED1, LED2, LED3 and LED4 connected respectively to PD.07, PD.13, PF.03
      and PD.04 pins
    
  - STM3210E-EVAL Set-up 
    - Use an IrDA tranceiver connected to the USART3 Tx pin (U13 connector, JP21
      and JP22 jumper must be fitted).
    - Use LED1, LED2, LED3 and LED4 leds connected respectively to PF.06, PF0.7,
      PF.08 and PF.09 pins

  - STM3210B-EVAL Set-up 
    - Use an IrDA tranceiver connected to the USART3 Tx pin (U11 connector, JP5 
      jumper must be fitted).
    - Use LED1, LED2, LED3 and LED4 leds connected respectively to PC.06, PC.07,
      PC.08 and PC.09 pins 

  
@par How to use it ? 

In order to make the program work, you must do the following :
- Create a project and setup all project configuration
- Add the required Library files :
  - stm32f10x_gpio.c 
  - stm32f10x_rcc.c 
  - stm32f10x_exti.c
  - misc.c
  - stm32f10x_usart.c
  - system_stm32f10x.c (under Libraries\CMSIS\Core\CM3)
  - stm32_eval.c (under Utilities\STM32_EVAL)
   
- Edit stm32f10x.h file to select the device you are working on.
- Edit USART/IrDA/Receive/platform_config.h file to select the evaluation board you will use.
- or edit stm32_eval.h file to select the evaluation board you will use.
  
@b Tip: You can tailor the provided project template to run this example, for 
        more details please refer to "stm32f10x_stdperiph_lib_um.chm" user 
        manual; select "Peripheral Examples" then follow the instructions 
        provided in "How to proceed" section.   
- Link all compiled files and load your image into target memory
- Run the example

@note
 - Low-density devices are STM32F101xx and STM32F103xx microcontrollers where
   the Flash memory density ranges between 16 and 32 Kbytes.
 - Medium-density devices are STM32F101xx and STM32F103xx microcontrollers where
   the Flash memory density ranges between 32 and 128 Kbytes.
 - High-density devices are STM32F101xx and STM32F103xx microcontrollers where
   the Flash memory density ranges between 256 and 512 Kbytes.
 - Connectivity line devices are STM32F105xx and STM32F107xx microcontrollers.
    
 * <h3><center>&copy; COPYRIGHT 2009 STMicroelectronics</center></h3>
 */
