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123 lines
5.8 KiB
Plaintext
123 lines
5.8 KiB
Plaintext
/**
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@page LCD_Paint LCD Paint application
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@verbatim
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******************** (C) COPYRIGHT 2017 STMicroelectronics *******************
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* @file Display/LCD_Paint/readme.txt
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* @author MCD Application Team
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* @brief
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******************************************************************************
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*
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* Copyright (c) 2017 STMicroelectronics. All rights reserved.
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*
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* This software component is licensed by ST under Ultimate Liberty license
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* SLA0044, the "License"; You may not use this file except in compliance with
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* the License. You may obtain a copy of the License at:
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* www.st.com/SLA0044
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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 configure LCD touch screen and attribute
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an action related to configured touch zone and how to save BMP picture in SDCard.
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At the beginning of the main program the HAL_Init() function is called to reset
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all the peripherals, initialize the Flash interface and the systick.
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Then the SystemClock_Config() function is used to configure the system
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clock (SYSCLK) to run at 180 MHz.
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After LCD and touch screen initialization, touchscreen calibration is requested
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for better accuracy, then, menu is displayed on the screen.
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The menu contains palette of colors, clear icon, save icon, different kind
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of draw size, the current selected size, selected color and working rectangle.
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Select one of proposed colors and select the size of brush to draw
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inside the working rectangle.
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Clear the working window by pressing the clear icon or/and save the picture
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in SDCard by pressing the save icon.
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LCD Menu
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____________________________________________________________
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/ |______|---------------------------------------------------- |
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| |______|| ||
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| |______|| ||
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| |______|| ||
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| |______|| ||
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| |______|| ||
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palette | |______|| Working Rectangle ||
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of __| |______|| ||
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Colors | |______|| ||
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| |______|| ||
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| |______|| ||
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| |______|| ||
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| |______||___________________________________________________||
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\ |______|__________________ _________ __ |
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|clear | choose the brush| Save | |__| O |
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|______|________size______|__SDCard_|__selected color__size__|
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- LED1 is on to indicate the end of saving operation.
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- LED3 is ON when any error occurs.
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Note: After save operation, the touch positions are not cleared from STMPE811 FIFO
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and the next touch in any positions of the LCD screen leads second save
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operation.
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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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@par Keywords
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Graphic, Display, LCD, DSI, Image slider, GRAM, Touch screen,
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@par Directory contents
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- Display/LCD_Paint/Inc/main.h Main program header file
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- Display/LCD_Paint/Inc/sd_diskio.h FatFS sd diskio driver header file
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- Display/LCD_Paint/Inc/stm32f4xx_it.h Interrupt handlers header file
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- Display/LCD_Paint/Inc/stm32f4xx_hal_conf.h HAL Configuration file
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- Display/LCD_Paint/Inc/color.h Image used for LCD Validation
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- Display/LCD_Paint/Inc/save.h Image used for LCD Validation
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- Display/LCD_Paint/Inc/fatfs_storage.h Header for fatfs_storage.c
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- Display/LCD_Paint/Inc/ffconf.h FAT file system module configuration file
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- Display/LCD_Paint/Src/main.c Main program
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- Display/LCD_Paint/Src/sd_diskio.c FatFS sd diskio driver implementation
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- Display/LCD_Paint/Src/stm32f4xx_it.c Interrupt handlers
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- Display/LCD_Paint/Src/system_stm32f4xx.c STM32F4xx system clock configuration file
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- Display/LCD_Paint/Src/ts_calibration.c Touchscreen calibration driver
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- Display/LCD_Paint/Src/fatfs_storage.c Storage (FatFs) driver
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@par Hardware and Software environment
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- This application runs on STM32F469xx and STM32F479xx devices.
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- This application has been tested with STM32469I-EVAL RevC evaluation board
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and can be easily tailored to any other supported device and development board.
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- STM32469I-EVAL Set-up
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- Connect a uSD Card to the Micro SD connector (CN17).
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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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- 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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* <h3><center>© COPYRIGHT STMicroelectronics</center></h3>
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*/
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