/**
  @page LTDC_AnimatedPictureFromUSB LTDC example Readme file
  
  @verbatim
  ******************************************************************************
  * @file    LTDC/LTDC_AnimatedPictureFromUSB/readme.txt 
  * @author  MCD Application Team
  * @version V1.0.1
  * @date    26-February-2014
  * @brief   Description of the STM32F4xx LTDC_AnimatedPictureFromUSB example.
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
  *
  * Redistribution and use in source and binary forms, with or without modification,
  * are permitted provided that the following conditions are met:
  *   1. Redistributions of source code must retain the above copyright notice,
  *      this list of conditions and the following disclaimer.
  *   2. Redistributions in binary form must reproduce the above copyright notice,
  *      this list of conditions and the following disclaimer in the documentation
  *      and/or other materials provided with the distribution.
  *   3. Neither the name of STMicroelectronics nor the names of its contributors
  *      may be used to endorse or promote products derived from this software
  *      without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  ******************************************************************************
   @endverbatim

@par Example Description

  This example describes how to display on LCD pictures saved under USB mass storage.
   
  The user has to put bitmap pictures that don't exceed LCD size(width: 240, high: 320)
  under root of USB mass storage (you can use pictures under LTDC_AnimatedPictureFromUSB\Media repository). 
          
  Once the LCD, USB OTG HS and file system are initialized and configured, a check
  of the existence and the content of the USB mass storage directory is done.
 
  A list of USB mass storage content will be displayed followed by a message 
  indicating that a press of user button is needed to start the display of
  existing images.

@note : Once all images are displayed, the process is repeated.
      
@note Care must be taken when using HAL_Delay(), this function provides accurate delay (in milliseconds)
      based on variable incremented in SysTick ISR. This implies that if HAL_Delay() is called from
      a peripheral ISR process, then the SysTick interrupt must have higher priority (numerically lower)
      than the peripheral interrupt. Otherwise the caller ISR process will be blocked.
      To change the SysTick interrupt priority you have to use HAL_NVIC_SetPriority() function.
      
@note The application need to ensure that the SysTick time base is always set to 1 millisecond
      to have correct HAL operation.

@par Directory contents

    - LTDC/LTDC_AnimatedPictureFromUSB/Inc/main.h                 Main configuration file
    - LTDC/LTDC_AnimatedPictureFromUSB/Inc/stm32f4xx_it.h         Header for stm32f4xx_it.c
    - LTDC/LTDC_AnimatedPictureFromUSB/Inc/stm32f4xx_hal_conf.h   library configuration file 
    - LTDC/LTDC_AnimatedPictureFromUSB/Inc/ffconf.h               Configuration file for FatFs module.
    - LTDC/LTDC_AnimatedPictureFromUSB/Inc/lcd_log_conf.h         Configuration file for LCD_Log module.
    - LTDC/LTDC_AnimatedPictureFromUSB/Inc/usbh_conf.h            Configuration file for USB module.
    - LTDC/LTDC_AnimatedPictureFromUSB/Src/main.c                 Main program 
    - LTDC/LTDC_AnimatedPictureFromUSB/Src/stm32f4xx_it.c         Interrupt handlers
    - LTDC/LTDC_AnimatedPictureFromUSB/Src/usbh_conf.c            Main function to configure USB
    - LTDC/LTDC_AnimatedPictureFromUSB/Src/system_stm32f4xx.c     STM32F4xx system clock configuration file

@par Hardware and Software environment  

  - This example runs on STM32F429xx Devices.
    
  - This example has been tested with STMicroelectronics STM32F429I-DISCOVERY (MB1075B) 
    discovery boards and can be easily tailored to any other supported device and 
    development board.
  - Please, refer to HardwareToRunExample.png picture to know about hardware 
    needed to run the example.   
 
@par How to use it ?
In order to make the program work, you must do the following :

  + EWARM
    - Open the LTDC_AnimatedPictureFromUSB.eww workspace 
    - Rebuild all files: Project->Rebuild all
    - Load project image: Project->Debug
    - Run program: Debug->Go(F5)
  
 * <h3><center>&copy; COPYRIGHT STMicroelectronics</center></h3>
 */
                                   