goran-mahovlic
/
eez-flow-template-stm32l496g-disco
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
14 Commits
1 Branch
0 Tags
5.8 MiB
 
 
 
 
 
 
Branch: main
Branches Tags
${ item.name }
Create tag ${ searchTerm }
Create branch ${ searchTerm }
from 'main'
${ noResults }
eez-flow-template-stm32l496.../Drivers/BSP/STM32L496G-Discovery/stm32l496g_discovery_camera.c

614 lines
16 KiB
Raw Permalink Blame History

/**
******************************************************************************
* @file stm32l496g_discovery_camera.c
* @author MCD Application Team
* @brief This file includes the driver for Camera modules mounted on
* STM32L496G-Discovery board.
@verbatim
How to use this driver:
------------------------
- This driver is used to drive the camera.
- The OV9655 component driver MUST be included with this driver.
Driver description:
-------------------
+ Initialization steps:
o Initialize the camera using the BSP_CAMERA_Init() function.
o Start the camera capture/snapshot using the CAMERA_Start() function.
o Suspend, resume or stop the camera capture using the following functions:
- BSP_CAMERA_Suspend()
- BSP_CAMERA_Resume()
- BSP_CAMERA_Stop()
+ Options
o Increase or decrease on the fly the brightness and/or contrast
using the following function:
- BSP_CAMERA_ContrastBrightnessConfig
o Add a special effect on the fly using the following functions:
- BSP_CAMERA_BlackWhiteConfig()
- BSP_CAMERA_ColorEffectConfig()
@endverbatim
******************************************************************************
* @attention
*
* <h2><center>&copy; Copyright (c) 2017 STMicroelectronics.
* All rights reserved.</center></h2>
*
* This software component is licensed by ST under BSD 3-Clause license,
* the "License"; You may not use this file except in compliance with the
* License. You may obtain a copy of the License at:
* opensource.org/licenses/BSD-3-Clause
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32l496g_discovery_camera.h"
#include "stm32l496g_discovery.h"
#include "stm32l496g_discovery_io.h"
/** @addtogroup BSP
* @{
*/
/** @addtogroup STM32L496G_DISCOVERY
* @{
*/
/** @addtogroup STM32L496G_DISCOVERY_CAMERA
* @{
*/
/** @defgroup STM32L496G_DISCOVERY_CAMERA_Private_TypesDefinitions STM32L496G_DISCOVERY_CAMERA Private Types Definitions
* @{
*/
/**
* @}
*/
/** @defgroup STM32L496G_DISCOVERY_CAMERA_Private_Defines STM32L496G_DISCOVERY_CAMERA Private Defines
* @{
*/
#define CAMERA_VGA_RES_X 640
#define CAMERA_VGA_RES_Y 480
#define CAMERA_480x272_RES_X 480
#define CAMERA_480x272_RES_Y 272
#define CAMERA_QVGA_RES_X 320
#define CAMERA_QVGA_RES_Y 240
#define CAMERA_QQVGA_RES_X 160
#define CAMERA_QQVGA_RES_Y 120
/**
* @}
*/
/** @defgroup STM32L496G_DISCOVERY_CAMERA_Private_Macros STM32L496G_DISCOVERY_CAMERA Private Macros
* @{
*/
/**
* @}
*/
/** @defgroup STM32L496G_DISCOVERY_CAMERA_Private_Variables STM32L496G_DISCOVERY_CAMERA Private Variables
* @{
*/
DCMI_HandleTypeDef hDcmiHandler;
CAMERA_DrvTypeDef *camera_drv;
/* Camera current resolution naming (QQVGA, VGA, ...) */
static uint32_t CameraCurrentResolution;
/* Camera module I2C HW address */
static uint32_t CameraHwAddress;
/**
* @}
*/
/** @defgroup STM32L496G_DISCOVERY_CAMERA_Private_FunctionPrototypes STM32L496G_DISCOVERY_CAMERA Private Function Prototypes
* @{
*/
static uint32_t GetSize(uint32_t resolution);
/**
* @}
*/
/** @defgroup STM32L496G_DISCOVERY_CAMERA_Exported_Functions STM32L496G_DISCOVERY_CAMERA Exported Functions
* @{
*/
/**
* @brief Initializes the camera.
* @param Resolution : camera sensor requested resolution (x, y) : standard resolution
* naming QQVGA, QVGA, VGA ...
* @retval Camera status
*/
uint8_t BSP_CAMERA_Init(uint32_t Resolution)
{
DCMI_HandleTypeDef *phdcmi;
uint8_t status = CAMERA_ERROR;
/* Get the DCMI handle structure */
phdcmi = &hDcmiHandler;
/* Initialize the IO functionalities */
BSP_IO_Init();
/*** Configures the DCMI to interface with the camera module ***/
/* DCMI configuration */
phdcmi->Init.CaptureRate = DCMI_CR_ALL_FRAME;
phdcmi->Init.HSPolarity = DCMI_HSPOLARITY_HIGH;
phdcmi->Init.SynchroMode = DCMI_SYNCHRO_HARDWARE;
phdcmi->Init.VSPolarity = DCMI_VSPOLARITY_HIGH;
phdcmi->Init.ExtendedDataMode = DCMI_EXTEND_DATA_8B;
phdcmi->Init.PCKPolarity = DCMI_PCKPOLARITY_RISING;
phdcmi->Init.ByteSelectMode = DCMI_BSM_ALL;
phdcmi->Init.LineSelectMode = DCMI_LSM_ALL;
phdcmi->Instance = DCMI;
/* Camera initialization */
BSP_CAMERA_MspInit(&hDcmiHandler, NULL);
/* Read ID of Camera module via I2C */
if (ov9655_ReadID(CAMERA_I2C_ADDRESS) == OV9655_ID)
{
/* Initialize the camera driver structure */
camera_drv = &ov9655_drv;
CameraHwAddress = CAMERA_I2C_ADDRESS;
/* DCMI Initialization */
HAL_DCMI_Init(phdcmi);
/* Camera Module Initialization via I2C to the wanted 'Resolution' */
if (Resolution == CAMERA_R320x240)
{
/* For 240x240 resolution, the OV9655 sensor is set to QVGA resolution
* as OV9655 doesn't supports 240x240 resolution,
* then DCMI is configured to output a 240x240 cropped window */
camera_drv->Init(CameraHwAddress, CAMERA_R320x240);
HAL_DCMI_ConfigCROP(phdcmi,
40, /* Crop in the middle of the VGA picture */
0, /* Same height (same number of lines: no need to crop vertically) */
(240 * 2) - 1, /* 2 pixels clock needed to capture one pixel */
(240 * 1) - 1); /* All 240 lines are captured */
HAL_DCMI_EnableCROP(phdcmi);
/* Set the RGB565 mode */
MFX_IO_Write(CameraHwAddress, 0x12 /*OV9655_COM7*/, 0x63);
MFX_IO_Write(CameraHwAddress, 0x40 /*OV9655_COM15*/, 0x10);
/* Invert the HRef signal */
MFX_IO_Write(CameraHwAddress, 0x15 /*OV9655_COM10*/, 0x08);
HAL_Delay(500);
}
else
{
camera_drv->Init(CameraHwAddress, Resolution);
HAL_DCMI_DisableCROP(phdcmi);
}
CameraCurrentResolution = Resolution;
/* Return CAMERA_OK status */
status = CAMERA_OK;
}
else
{
/* Return CAMERA_NOT_SUPPORTED status */
status = CAMERA_NOT_SUPPORTED;
}
return status;
}
/**
* @brief DeInitializes the camera.
* @retval Camera status
*/
uint8_t BSP_CAMERA_DeInit(void)
{
hDcmiHandler.Instance = DCMI;
HAL_DCMI_DeInit(&hDcmiHandler);
BSP_CAMERA_MspDeInit(&hDcmiHandler, NULL);
return CAMERA_OK;
}
/**
* @brief Starts the camera capture in continuous mode.
* @param buff: pointer to the camera output buffer
* @retval None
*/
void BSP_CAMERA_ContinuousStart(uint8_t *buff)
{
/* Start the camera capture */
HAL_DCMI_Start_DMA(&hDcmiHandler, DCMI_MODE_CONTINUOUS, (uint32_t)buff, GetSize(CameraCurrentResolution));
}
/**
* @brief Starts the camera capture in snapshot mode.
* @param buff: pointer to the camera output buffer
* @retval None
*/
void BSP_CAMERA_SnapshotStart(uint8_t *buff)
{
/* Start the camera capture */
HAL_DCMI_Start_DMA(&hDcmiHandler, DCMI_MODE_SNAPSHOT, (uint32_t)buff, GetSize(CameraCurrentResolution));
}
/**
* @brief Suspend the CAMERA capture
* @retval None
*/
void BSP_CAMERA_Suspend(void)
{
/* Suspend the Camera Capture */
HAL_DCMI_Suspend(&hDcmiHandler);
}
/**
* @brief Resume the CAMERA capture
* @retval None
*/
void BSP_CAMERA_Resume(void)
{
/* Start the Camera Capture */
HAL_DCMI_Resume(&hDcmiHandler);
}
/**
* @brief Stop the CAMERA capture
* @retval Camera status
*/
uint8_t BSP_CAMERA_Stop(void)
{
uint8_t status = CAMERA_ERROR;
if (HAL_DCMI_Stop(&hDcmiHandler) == HAL_OK)
{
status = CAMERA_OK;
}
/* Set Camera in Power Down */
BSP_CAMERA_PwrDown();
return status;
}
/**
* @brief CANERA power up
* @retval None
*/
void BSP_CAMERA_PwrUp(void)
{
/* De-assert the camera POWER_DOWN pin (active high) */
BSP_IO_WritePin(CAMERA_PWR_EN_PIN, GPIO_PIN_RESET);
HAL_Delay(3); /* POWER_DOWN de-asserted during 3ms */
}
/**
* @brief CAMERA power down
* @retval None
*/
void BSP_CAMERA_PwrDown(void)
{
/* Assert the camera POWER_DOWN pin (active high) */
BSP_IO_WritePin(CAMERA_PWR_EN_PIN, GPIO_PIN_SET);
}
/**
* @brief Configures the camera contrast and brightness.
* @param contrast_level: Contrast level
* This parameter can be one of the following values:
* @arg CAMERA_CONTRAST_LEVEL4: for contrast +2
* @arg CAMERA_CONTRAST_LEVEL3: for contrast +1
* @arg CAMERA_CONTRAST_LEVEL2: for contrast 0
* @arg CAMERA_CONTRAST_LEVEL1: for contrast -1
* @arg CAMERA_CONTRAST_LEVEL0: for contrast -2
* @param brightness_level: Contrast level
* This parameter can be one of the following values:
* @arg CAMERA_BRIGHTNESS_LEVEL4: for brightness +2
* @arg CAMERA_BRIGHTNESS_LEVEL3: for brightness +1
* @arg CAMERA_BRIGHTNESS_LEVEL2: for brightness 0
* @arg CAMERA_BRIGHTNESS_LEVEL1: for brightness -1
* @arg CAMERA_BRIGHTNESS_LEVEL0: for brightness -2
* @retval None
*/
void BSP_CAMERA_ContrastBrightnessConfig(uint32_t contrast_level, uint32_t brightness_level)
{
if (camera_drv->Config != NULL)
{
camera_drv->Config(CameraHwAddress, CAMERA_CONTRAST_BRIGHTNESS, contrast_level, brightness_level);
}
}
/**
* @brief Configures the camera white balance.
* @param Mode: black_white mode
* This parameter can be one of the following values:
* @arg CAMERA_BLACK_WHITE_BW
* @arg CAMERA_BLACK_WHITE_NEGATIVE
* @arg CAMERA_BLACK_WHITE_BW_NEGATIVE
* @arg CAMERA_BLACK_WHITE_NORMAL
* @retval None
*/
void BSP_CAMERA_BlackWhiteConfig(uint32_t Mode)
{
if (camera_drv->Config != NULL)
{
camera_drv->Config(CameraHwAddress, CAMERA_BLACK_WHITE, Mode, 0);
}
}
/**
* @brief Configures the camera color effect.
* @param Effect: Color effect
* This parameter can be one of the following values:
* @arg CAMERA_COLOR_EFFECT_ANTIQUE
* @arg CAMERA_COLOR_EFFECT_BLUE
* @arg CAMERA_COLOR_EFFECT_GREEN
* @arg CAMERA_COLOR_EFFECT_RED
* @retval None
*/
void BSP_CAMERA_ColorEffectConfig(uint32_t Effect)
{
if (camera_drv->Config != NULL)
{
camera_drv->Config(CameraHwAddress, CAMERA_COLOR_EFFECT, Effect, 0);
}
}
/**
* @brief Get the capture size in pixels unit.
* @param resolution: the current resolution.
* @retval capture size in pixels unit.
*/
static uint32_t GetSize(uint32_t resolution)
{
uint32_t size = 0;
/* Get capture size */
switch (resolution)
{
case CAMERA_R160x120:
{
size = 0x2580;
}
break;
case CAMERA_R320x240:
{
size = 0x9600;
}
break;
case CAMERA_R480x272:
{
size = 0xFF00;
}
break;
case CAMERA_R640x480:
{
size = 0x25800;
}
break;
default:
{
break;
}
}
return size;
}
/**
* @brief Initializes the DCMI MSP.
* @param hdcmi: HDMI handle
* @param Params
* @retval None
*/
__weak void BSP_CAMERA_MspInit(DCMI_HandleTypeDef *hdcmi, void *Params)
{
static DMA_HandleTypeDef hdma_handler;
GPIO_InitTypeDef gpio_init_structure;
/*** Enable peripherals and GPIO clocks ***/
/* Enable DCMI clock */
__HAL_RCC_DCMI_CLK_ENABLE();
/* Enable DMA2 clock */
__HAL_RCC_DMA2_CLK_ENABLE();
/* Enable GPIO clocks */
__HAL_RCC_GPIOA_CLK_ENABLE();
__HAL_RCC_GPIOE_CLK_ENABLE();
__HAL_RCC_GPIOH_CLK_ENABLE();
__HAL_RCC_GPIOI_CLK_ENABLE();
HAL_RCC_MCOConfig(RCC_MCO1, RCC_MCO1SOURCE_SYSCLK, RCC_MCODIV_4);
__HAL_RCC_HSI48_ENABLE();
HAL_Delay(10); // HSI48 should start in 10ms
/*** Configure the GPIO ***/
/* Configure DCMI GPIO as alternate function */
gpio_init_structure.Pin = GPIO_PIN_5;
gpio_init_structure.Mode = GPIO_MODE_AF_PP;
gpio_init_structure.Pull = GPIO_NOPULL;
gpio_init_structure.Speed = GPIO_SPEED_HIGH;
gpio_init_structure.Alternate = GPIO_AF10_DCMI;
HAL_GPIO_Init(GPIOE, &gpio_init_structure);
gpio_init_structure.Pin = GPIO_PIN_5 | GPIO_PIN_8 | GPIO_PIN_9 | \
GPIO_PIN_10 | GPIO_PIN_11 | GPIO_PIN_12 | GPIO_PIN_14;
gpio_init_structure.Mode = GPIO_MODE_AF_PP;
gpio_init_structure.Pull = GPIO_NOPULL;
gpio_init_structure.Speed = GPIO_SPEED_HIGH;
gpio_init_structure.Alternate = GPIO_AF10_DCMI;
HAL_GPIO_Init(GPIOH, &gpio_init_structure);
gpio_init_structure.Pin = GPIO_PIN_4 | GPIO_PIN_5 | GPIO_PIN_7;
gpio_init_structure.Mode = GPIO_MODE_AF_PP;
gpio_init_structure.Pull = GPIO_NOPULL;
gpio_init_structure.Speed = GPIO_SPEED_HIGH;
gpio_init_structure.Alternate = GPIO_AF10_DCMI;
HAL_GPIO_Init(GPIOI, &gpio_init_structure);
/*** Configure the DMA ***/
/* Set the parameters to be configured */
hdma_handler.Instance = BSP_CAMERA_DMA_INSTANCE;
hdma_handler.Init.Request = DMA_REQUEST_0;
hdma_handler.Init.Direction = DMA_PERIPH_TO_MEMORY;
hdma_handler.Init.PeriphInc = DMA_PINC_DISABLE;
hdma_handler.Init.MemInc = DMA_MINC_ENABLE; /* Image captured by the DCMI is stored in memory */
hdma_handler.Init.PeriphDataAlignment = DMA_PDATAALIGN_WORD;
hdma_handler.Init.MemDataAlignment = DMA_MDATAALIGN_WORD;
hdma_handler.Init.Mode = DMA_CIRCULAR;
hdma_handler.Init.Priority = DMA_PRIORITY_HIGH;
/* Associate the initialized DMA handle to the DCMI handle */
__HAL_LINKDMA(hdcmi, DMA_Handle, hdma_handler);
/*** Configure the NVIC for DCMI and DMA ***/
/* NVIC configuration for DCMI transfer complete interrupt */
HAL_NVIC_SetPriority(DCMI_IRQn, 0x0F, 0);
HAL_NVIC_EnableIRQ(DCMI_IRQn);
/* NVIC configuration for DMA2D transfer complete interrupt */
HAL_NVIC_SetPriority(DMA2_Channel6_IRQn, 0x0F, 0);
HAL_NVIC_EnableIRQ(DMA2_Channel6_IRQn);
/* Configure the DMA stream */
HAL_DMA_Init(hdcmi->DMA_Handle);
}
/**
* @brief DeInitializes the DCMI MSP.
* @param hdcmi: HDMI handle
* @param Params
* @retval None
*/
__weak void BSP_CAMERA_MspDeInit(DCMI_HandleTypeDef *hdcmi, void *Params)
{
/* Disable NVIC for DCMI transfer complete interrupt */
HAL_NVIC_DisableIRQ(DCMI_IRQn);
/* Disable NVIC for DMA2 transfer complete interrupt */
HAL_NVIC_DisableIRQ(DMA2_Channel6_IRQn);
/* Configure the DMA stream */
HAL_DMA_DeInit(hdcmi->DMA_Handle);
/* Disable DCMI clock */
__HAL_RCC_DCMI_CLK_DISABLE();
/* GPIO pins clock and DMA clock can be shut down in the application
by surcharging this __weak function */
}
/**
* @brief Line event callback
* @param hdcmi: pointer to the DCMI handle
* @retval None
*/
void HAL_DCMI_LineEventCallback(DCMI_HandleTypeDef *hdcmi)
{
BSP_CAMERA_LineEventCallback();
}
/**
* @brief Line Event callback.
* @retval None
*/
__weak void BSP_CAMERA_LineEventCallback(void)
{
/* NOTE : This function should not be modified; when the callback is needed,
the BSP_CAMERA_LineEventCallback can be implemented in the user file
*/
}
/**
* @brief VSYNC event callback
* @param hdcmi: pointer to the DCMI handle
* @retval None
*/
void HAL_DCMI_VsyncEventCallback(DCMI_HandleTypeDef *hdcmi)
{
BSP_CAMERA_VsyncEventCallback();
}
/**
* @brief VSYNC Event callback.
* @retval None
*/
__weak void BSP_CAMERA_VsyncEventCallback(void)
{
/* NOTE : This function should not be modified; when the callback is needed,
the BSP_CAMERA_VsyncEventCallback can be implemented in the user file
*/
}
/**
* @brief Frame event callback
* @param hdcmi: pointer to the DCMI handle
* @retval None
*/
void HAL_DCMI_FrameEventCallback(DCMI_HandleTypeDef *hdcmi)
{
BSP_CAMERA_FrameEventCallback();
}
/**
* @brief Frame Event callback.
* @retval None
*/
__weak void BSP_CAMERA_FrameEventCallback(void)
{
/* NOTE : This function should not be modified; when the callback is needed,
the BSP_CAMERA_FrameEventCallback can be implemented in the user file
*/
}
/**
* @brief Error callback
* @param hdcmi: pointer to the DCMI handle
* @retval None
*/
void HAL_DCMI_ErrorCallback(DCMI_HandleTypeDef *hdcmi)
{
BSP_CAMERA_ErrorCallback();
}
/**
* @brief Error callback.
* @retval None
*/
__weak void BSP_CAMERA_ErrorCallback(void)
{
/* NOTE : This function should not be modified; when the callback is needed,
the BSP_CAMERA_ErrorCallback can be implemented in the user file
*/
}
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/