118 lines
5.2 KiB
Plaintext
118 lines
5.2 KiB
Plaintext
/**
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@page LCD_PicturesFromSDCard LCD pictures from SD card application
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@verbatim
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******************************************************************************
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* @file Display/LCD_PicturesFromSDCard/readme.txt
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* @author MCD Application Team
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* @brief Description of the LCD pictures from SD card application.
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2017 STMicroelectronics.
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* All rights reserved.
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*
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* This software is licensed under terms that can be found in the LICENSE file
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* in the root directory of this software component.
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* If no LICENSE file comes with this software, it is provided AS-IS.
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*
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******************************************************************************
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@endverbatim
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@par Application Description
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This application describes how to display on LCD pictures saved under SD card.
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The image copied from SD card into internal SRAM and then displayed on LCD.
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By pressing User button, the application displays the next image.
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Once the LCD, SD card and file systems are initialized and configured,
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a content check of the "Media" directory is done and the number of ".BMP" files
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is retained.
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User has to create a "Media" directory under the micro SD card root, where he
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copies images with the following properties:
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file type : *.bmp
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resolution : 240x240
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pixel format : RGB565 (16-bits)
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@note : The user can add pictures of his choice but the file type, resolution
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and pixel format described below must be respected.
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@note : Maximum accepted length of image file name is 11. (characters including the extension .bmp)
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@note : An associate LCD discovery driver is used in this application.
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@note : The maximum number of BMP file is fixed at 25. It can be raised
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until reaching the maximum of SD card memory space.
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@note
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=> If the "Media" directory is empty, a warning message is displayed on
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the LCD : "No Bitmap files..."
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=> If the SD card is not inserted, a warning message is displayed on the LCD :
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"Please insert SD Card."
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=> If the SD card is unplugged while the program is running, after User button is pressed a warning message is displayed on the LCD:
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"Please insert SD Card"
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"Reset the board"
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@note Care must be taken when using HAL_Delay(), this function provides accurate delay (in milliseconds)
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based on variable incremented in SysTick ISR. This implies that if HAL_Delay() is called from
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a peripheral ISR process, then the SysTick interrupt must have higher priority (numerically lower)
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than the peripheral interrupt. Otherwise the caller ISR process will be blocked.
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To change the SysTick interrupt priority you have to use HAL_NVIC_SetPriority() function.
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@note The application needs to ensure that the SysTick time base is always set to 1 millisecond
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to have correct HAL operation.
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- LED4 is ON when the uSD disk I/O driver is not Linked or an error has occurred.
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@par Keywords
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Graphic, Display, LCD, Pictures, SD Card, BMP, RGB565, RGB888, ARGB8888
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@par Directory contents
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- Display/LCD_PicturesFromSDCard/Inc/main.h Main configuration file
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- Display/LCD_PicturesFromSDCard/Inc/sd_diskio.h FatFS sd diskio driver header file
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- Display/LCD_PicturesFromSDCard/Inc/stm32f4xx_it.h Interrupt handlers header file
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- Display/LCD_PicturesFromSDCard/Inc/stm32f4xx_hal_conf.h HAL Configuration file
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- Display/LCD_PicturesFromSDCard/Inc/ffconf.h FAT file system module configuration file
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- Display/LCD_PicturesFromSDCard/Inc/fatfs_storage.h Header for fatfs_storage.c
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- Display/LCD_PicturesFromSDCard/Src/main.c Main program
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- Display/LCD_PicturesFromSDCard/Src/sd_diskio.c FatFS sd diskio driver implementation
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- Display/LCD_PicturesFromSDCard/Src/fatfs_storage.c Storage (FatFs) driver
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- Display/LCD_PicturesFromSDCard/Src/stm32f4xx_it.c Interrupt handlers
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- Display/LCD_PicturesFromSDCard/Src/system_stm32f4xx.c STM32F4xx system clock configuration file
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@par Hardware and Software environment
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- This application runs on and STM32F413xx devices.
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- This application has been tested with STMicroelectronics STM32F413H-DISCOVERY
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boards and can be easily tailored to any other supported device
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and development board.
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- STM32F413H-Discovery Set-up
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- Connect the STM32F413H-Discovery board to the PC through 'USB micro A-Male
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to A-Male' cable to the connector
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- Connect a uSD Card to the MSD connector (CN1).
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@par How to use it ?
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In order to make the program work, you must do the following :
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- The bitmap images, available under "/BMP_240x240" folder
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provided under "/Utilities/Media/Pictures" might be copied inside a
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dedicated directory named "Media" at the micro SD card root.
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The images should have the following properties:
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file type : *.bmp
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resolution : 240x240
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pixel format : RGB565 (16-bits)
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- Open your preferred toolchain
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- Rebuild all files and load your image into target memory
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- Run the application
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*/
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