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/**
******************************************************************************
* @file BSP/Src/camera.c
* @author MCD Application Team
* @brief This example code shows how to use the camera feature in the
* stm32446e_eval driver
******************************************************************************
* @attention
*
* Copyright (c) 2017 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include <stdio.h>
#include "stm32446e_eval_audio.h"
/** @addtogroup STM32F4xx_HAL_Examples
* @{
*/
/** @addtogroup BSP
* @{
*/
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Camera Frame Buffer address */
#define CAMERA_FRAME_BUFFER SDRAM_WRITE_READ_ADDR
#define CAMERA_STATUS_TEXT_POS 30 /* Number of lines from bottom of screen */
#define CAMERA_QVGA_RES_X 320
#define CAMERA_QVGA_RES_Y 240
#define CAMERA_QQVGA_RES_X 160
#define CAMERA_QQVGA_RES_Y 120
#define CAMERA_RES_INDEX_MIN CAMERA_R160x120
#define CAMERA_RES_INDEX_MAX CAMERA_R320x240
#define CAMERA_CONTRAST_MIN CAMERA_CONTRAST_LEVEL0
#define CAMERA_CONTRAST_MAX CAMERA_CONTRAST_LEVEL4
#define CAMERA_BRIGHTNESS_MIN CAMERA_BRIGHTNESS_LEVEL0
#define CAMERA_BRIGHTNESS_MAX CAMERA_BRIGHTNESS_LEVEL4
#define CAMERA_FRAME_BUFFER_CROP (SDRAM_WRITE_READ_ADDR + (CAMERA_QVGA_RES_X * CAMERA_QVGA_RES_Y * 2))
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
static uint32_t CameraResIndex;
static uint32_t CameraChangeResolutionAsked;
/* Private function prototypes -----------------------------------------------*/
static void Camera_SetHint(void);
void BSP_CAMERA_FrameEventCallback(void);
void Camera_DisplayFrame(void);
/* Private functions ---------------------------------------------------------*/
/**
* @brief Camera demo
* @param None
* @retval None
*/
void Camera_demo (void)
{
uint8_t status = 0;
uint16_t *ptrCamera;
uint32_t i;
uint32_t exit = 0;
Camera_SetHint();
status = BSP_JOY_Init(JOY_MODE_GPIO);
/* Initialize the SDRAM for CAMERA_FRAME_BUFFER */
BSP_SDRAM_Init();
if (status != IO_OK)
{
BSP_LCD_SetBackColor(LCD_COLOR_WHITE);
BSP_LCD_SetTextColor(LCD_COLOR_RED);
BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize()- CAMERA_STATUS_TEXT_POS, (uint8_t *)"ERROR", CENTER_MODE);
BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize()- CAMERA_STATUS_TEXT_POS - 15, (uint8_t *)"Joystick cannot be initialized", CENTER_MODE);
status = 0;
}
/*## Camera Initialization and start capture ############################*/
BSP_LCD_SetBackColor(LCD_COLOR_BLUE);
BSP_LCD_SetTextColor(LCD_COLOR_WHITE);
BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize()- CAMERA_STATUS_TEXT_POS, (uint8_t *)"Wait for camera initialization...", CENTER_MODE);
/* Init Camera buffer */
ptrCamera = (uint16_t*)(CAMERA_FRAME_BUFFER);
CameraResIndex = CAMERA_R160x120; /* Set QQVGA default resolution */
CameraChangeResolutionAsked = 1;
for (i=0; i<(CAMERA_QVGA_RES_X * CAMERA_QVGA_RES_Y); i++) /* Camera buffer initialization */
{
ptrCamera[i]=0xFFFF;
}
/* Initialize IO */
BSP_IO_Init();
/* Infinite loop */
while(exit == 0)
{
if (CameraChangeResolutionAsked) /* A camera change resolution has been asked */
{
CameraChangeResolutionAsked = 0;
if (CameraResIndex > CAMERA_R160x120)
{ /* If camera stream already started, it has to be stopped before reconfiguration */
/* Stop camera stream */
status = BSP_CAMERA_Stop();
ASSERT(status != CAMERA_OK);
/* Clear screen */
Camera_SetHint();
BSP_LCD_SetBackColor(LCD_COLOR_BLUE);
BSP_LCD_SetTextColor(LCD_COLOR_WHITE);
BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize()- CAMERA_STATUS_TEXT_POS, (uint8_t *)"Wait for camera initialization...", CENTER_MODE);
}
BSP_LCD_SetBackColor(LCD_COLOR_WHITE);
BSP_LCD_SetTextColor(LCD_COLOR_BLUE);
status = 0;
switch (CameraResIndex)
{
case CAMERA_R160x120:
/* Initialize the Camera */
status = BSP_CAMERA_Init(RESOLUTION_R160x120);
BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize()- CAMERA_STATUS_TEXT_POS, (uint8_t *)" QQVGA camera stream ", CENTER_MODE);
break;
case CAMERA_R320x240:
/* Initialize the Camera */
status = BSP_CAMERA_Init(RESOLUTION_R320x240);
BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize()- CAMERA_STATUS_TEXT_POS, (uint8_t *)" QVGA camera stream ", CENTER_MODE);
break;
}
if (status != CAMERA_OK)
{
BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize()- CAMERA_STATUS_TEXT_POS - 15, (uint8_t *)" CAMERA INIT ERROR ", CENTER_MODE);
}
/* Start / Restart camera stream */
BSP_CAMERA_ContinuousStart((uint8_t *)CAMERA_FRAME_BUFFER);
} /* (CameraResIndex != CameraCurrentResIndex) */
/* Toggle LED4 */
BSP_LED_Toggle(LED3);
/* Insert 100 ms delay */
HAL_Delay(100);
/* Toggle LED2 */
BSP_LED_Toggle(LED2);
/* Insert 100 ms delay */
HAL_Delay(100);
if(CheckForUserInput() > 0)
{
if (CameraResIndex < CAMERA_RES_INDEX_MAX)
{
CameraResIndex++; /* Switch to higher resolution */
CameraChangeResolutionAsked = 1;
}
else
{
BSP_CAMERA_DeInit();
exit = 1;
}
}
}
/* Stop camera stream */
status = BSP_CAMERA_Stop();
ASSERT(status != CAMERA_OK);
/* End of camera demo */
}
/**
* @brief Display Camera demo hint
* @param None
* @retval None
*/
static void Camera_SetHint(void)
{
/* Clear the LCD */
BSP_LCD_Clear(LCD_COLOR_WHITE);
/* Set Camera Demo description */
BSP_LCD_SetTextColor(LCD_COLOR_BLUE);
BSP_LCD_FillRect(0, 0, BSP_LCD_GetXSize(), 90);
BSP_LCD_SetTextColor(LCD_COLOR_WHITE);
BSP_LCD_SetBackColor(LCD_COLOR_BLUE);
BSP_LCD_SetFont(&Font24);
BSP_LCD_DisplayStringAt(0, 0, (uint8_t *)"CAMERA EXAMPLE", CENTER_MODE);
BSP_LCD_SetFont(&Font12);
BSP_LCD_DisplayStringAt(0, 30, (uint8_t *)" Press User button for next resolution ", CENTER_MODE);
/* Set the LCD Text Color */
BSP_LCD_SetTextColor(LCD_COLOR_BLUE);
BSP_LCD_DrawRect(10, 100, BSP_LCD_GetXSize() - 20, BSP_LCD_GetYSize()- 110);
BSP_LCD_DrawRect(11, 101, BSP_LCD_GetXSize() - 22, BSP_LCD_GetYSize()- 112);
}
/**
* @brief Frame Event callback.
* @param None
* @retval None
*/
void BSP_CAMERA_FrameEventCallback(void)
{
uint32_t xsizeLCD, ysizeLCD;
uint32_t xsizeCamera, ysizeCamera;
uint32_t xoffset, yoffset;
uint32_t line, column, i, j;
uint16_t *ptrCamera, *ptrCameraCrop;
xsizeLCD = BSP_LCD_GetXSize();
ysizeLCD = BSP_LCD_GetYSize();
BSP_CAMERA_Suspend();
/* Display on LCD */
switch (CameraResIndex)
{
case CAMERA_R160x120:
xsizeCamera = CAMERA_QQVGA_RES_X;
ysizeCamera = CAMERA_QQVGA_RES_Y;
xoffset = 80;
yoffset = 105;
break;
case CAMERA_R320x240:
default:
xsizeCamera = CAMERA_QVGA_RES_X;
ysizeCamera = CAMERA_QVGA_RES_Y;
xoffset = 0;
yoffset = 0;
break;
}
if ((xsizeCamera > xsizeLCD) || (ysizeCamera > ysizeLCD))
{
/* As the camera output resolution is greater than display resolution, a cropped image has to be generated */
ptrCamera = (uint16_t *)(CAMERA_FRAME_BUFFER);
ptrCameraCrop = (uint16_t *)(CAMERA_FRAME_BUFFER_CROP);
xoffset = (xsizeCamera - xsizeLCD) / 2;
yoffset = (ysizeCamera - ysizeLCD) / 2;
i=0;
j=xoffset;
for (line = 0; line < ysizeLCD; line ++)
{
for (column = 0; column < xsizeLCD; column ++)
{
ptrCameraCrop[i++] = ptrCamera[j++];
}
j += xsizeCamera - xsizeLCD;
}
BSP_LCD_DrawRGBImage(0, 0, xsizeLCD , ysizeLCD, (uint8_t *)ptrCameraCrop);
}
else
{
BSP_LCD_DrawRGBImage(xoffset, yoffset, xsizeCamera , ysizeCamera, (uint8_t *)CAMERA_FRAME_BUFFER);
}
BSP_CAMERA_Resume();
}
/**
* @}
*/
/**
* @}
*/