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87 lines
3.5 KiB
Plaintext
87 lines
3.5 KiB
Plaintext
/**
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@page DCMI_CaptureMode DCMI Capture Mode example
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@verbatim
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******************** (C) COPYRIGHT 2017 STMicroelectronics *******************
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* @file DCMI/DCMI_CaptureMode/readme.txt
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* @author MCD Application Team
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* @brief Description of the STM32F4xx DCMI_CaptureMode example.
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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 Example Description
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This example provides a short description of how to use the DCMI to interface with
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a camera module and display in continuous mode the picture on the LCD.
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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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The Digital camera interface is configured to receive the capture from
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the camera module mounted on STM32446E-EVAL evaluation board.
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The DMA is configured to transfer the picture from DCMI peripheral
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to an external RAM used by the LCD as a frame buffer.
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When the frame event callback is raised the picture is transferred to the LCD frame buffer.
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The camera module is configured to generate QVGA (320x240) image resolution
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and the LCD is configured to display QVGA image resolution
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@note In case of camera fail, verify that camera sensor (U866 3M JS1434) connector
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located at the bottom side of MB1183 RevB Camera module is well connected.
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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 need 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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Display, DCMI, Camera, Capture, Frame Buffer, LCD, ARGB8888, DMA, RGB565, SDRAM, DMA2D, QQVGA
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@par Directory contents
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- DCMI/DCMI_CaptureMode/Inc/stm32f4xx_hal_conf.h HAL configuration file
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- DCMI/DCMI_CaptureMode/Inc/stm32f4xx_it.h Interrupt handlers header file
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- DCMI/DCMI_CaptureMode/Inc/main.h Header for main.c module
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- DCMI/DCMI_CaptureMode/Src/stm32f4xx_it.c Interrupt handlers
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- DCMI/DCMI_CaptureMode/Src/main.c Main program
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- DCMI/DCMI_CaptureMode/Src/system_stm32f4xx.c STM32F4xx system source file
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@par Hardware and Software environment
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- This example runs on STM32F446xx devices.
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- This example has been tested with STM32446E-EVAL board and can be
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easily tailored to any other supported device and development board.
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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: Project->Rebuild all
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- Load project image: Project->Download and Debug
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- Run program: Debug->Go(F5)
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*/
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