/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2023 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.
  *
  ******************************************************************************
  */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include <stdio.h>
#include <stdarg.h>
#include <string.h>
#include "ov5640.h"
//#include "modified_resized_image_data.h"


/* USER CODE END Includes */

/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */

/* USER CODE END PTD */

/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */

/* USER CODE END PD */

/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */

/* USER CODE END PM */

/* Private variables ---------------------------------------------------------*/
DCMI_HandleTypeDef hdcmi;
DMA_HandleTypeDef hdma_dcmi;

UART_HandleTypeDef hlpuart1;
DMA_HandleTypeDef hdma_lpuart_tx;

/* USER CODE BEGIN PV */

#define RES160X120
//#define RES320X240
//#define RES640X480
//#define RES800x600
//#define RES1024x768
//#define RES1280x960

#ifdef RES160X120
enum imageResolution imgRes=RES_160X120;
uint8_t frameBuffer[RES_160X120] = { 0 };
#endif

#ifdef RES320X240
enum imageResolution imgRes=RES_320X240;
uint8_t frameBuffer[RES_320X240] = { 0 };
#endif

#ifdef RES640X480
enum imageResolution imgRes=RES_640X480;
uint8_t frameBuffer[RES_640X480] = { 0 };
#endif

#ifdef RES800x600
enum imageResolution imgRes=RES_800x600;
uint8_t frameBuffer[RES_800x600] = { 0 };
#endif

#ifdef RES1024x768
enum imageResolution imgRes=RES_1024x768;
uint8_t frameBuffer[RES_1024x768] = { 0 };
#endif

#ifdef RES1280x960
enum imageResolution imgRes = RES_1280x960;
uint8_t frameBuffer[RES_1280x960] = { 0 };
#endif


short mutex = 0;
uint16_t bufferPointer = 0;
short headerFound = 0;
uint8_t rx_buffer[64];

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_DMA_Init(void);
static void MX_DCMI_Init(void);
static void MX_LPUART1_UART_Init(void);
/* USER CODE BEGIN PFP */

/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */

void send_hex_array_over_uart(const uint8_t* data, size_t size) {
    for (size_t i = 0; i < size; ++i) {
        char hex_string[3];  // 2 Zeichen für das Byte und 1 für '\0'
        snprintf(hex_string, sizeof(hex_string), "%02X", data[i]);
        HAL_UART_Transmit(&hlpuart1, (uint8_t*)hex_string, sizeof(hex_string) - 1, HAL_MAX_DELAY); // Senden Sie den Hex-String ohne das Null-Terminierungszeichen
    }
}


void vprint(const char *fmt, va_list argp) {
	char string[200];
	if (0 < vsprintf(string, fmt, argp)) // build string
			{
		HAL_UART_Transmit(&hlpuart1, (uint8_t*) string, strlen(string), 0xffffff); // send message via UART
	}
}

void my_printf(const char *fmt, ...) // custom printf() function
{
	va_list argp;
	va_start(argp, fmt);
	vprint(fmt, argp);
	va_end(argp);
}

void validateJpegInFramebuffer() {
    int startFound = 0;
    int endFound = 0;
    int jpegSize = 0;

    int startInt = 0;
    int endInt = 0;



    // Überprüfen, ob das Ende des JPEG-Bildes vorhanden ist
    for (int i = 0; i < 65536 - 1; i++) {
    	if (frameBuffer[i] == 0xFF && frameBuffer[i + 1] == 0xD8) {
			startInt = i;
			startFound = 1;
			break;
		}

    	if (frameBuffer[i] == 0xFF && frameBuffer[i + 1] == 0xD9) {
    		endInt = i;
			endFound = 1;
            jpegSize = i + 2;
            break;
        }

    }

    if (startFound && endFound) {
        printf("\nJPEG validiert, Grösse: %d Bytes\n", jpegSize);
    } else {
        printf("\nJPEG nicht validiert\n");
        if(startFound == 0){
        	printf("Header nicht gefunden\n");
        } else {
        	 printf("End nicht gefunden\n");
        }
    }

    printf("Start: %d\n", startInt);
	printf("Ende: %d\n", endInt);
	printf("Start gefunden: %d\n", startFound);
	printf("Ende gefunden: %d\n", endFound);
}



#ifdef __GNUC__
#define PUTCHAR_PROTOTYPE int __io_putchar(int ch)
#else
#define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f)
#endif

PUTCHAR_PROTOTYPE
{
  HAL_UART_Transmit(&hlpuart1, (uint8_t *)&ch, 1, HAL_MAX_DELAY);
  return ch;
}

/* USER CODE END 0 */

/**
  * @brief  The application entry point.
  * @retval int
  */
int main(void)
{
  /* USER CODE BEGIN 1 */
  #ifdef DEBUG
  	my_printf("Start configuration \r\n");
  #endif

  /* USER CODE END 1 */

  /* MCU Configuration--------------------------------------------------------*/

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();

  /* USER CODE BEGIN Init */

  /* USER CODE END Init */

  /* Configure the system clock */
  SystemClock_Config();

  /* USER CODE BEGIN SysInit */





  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_DMA_Init();
  MX_DCMI_Init();
  MX_LPUART1_UART_Init();
  /* USER CODE BEGIN 2 */

  /*
  OV2640_Init(&hi2c1, &hdcmi);
  HAL_Delay(10);
  OV2640_ResolutionOptions(imgRes);
  HAL_Delay(10);
  */
  HAL_Delay(10);
  printf("Initializing, please wait ...\r\n");

  
  while(OV5640_Init())
  {
	  HAL_Delay(500);
	  printf("OV5640 Initialization error, please check !\r\n");
  }
  

	/**
	 * Extra options
	 */

 
	OV5640_Light_Mode(0);	   //set auto
	OV5640_Color_Saturation(3); //default
	OV5640_Brightness(4);	//default
	OV5640_Contrast(3);     //default
	OV5640_Sharpness(33);	//set auto


	#ifdef DEBUG
		my_printf("Finishing configuration \r\n");
	#endif



	printf("Waveshare OV5640 Test \r\n");
	printf("press Button to send JPEG to UART port \r\n");
	int takePhoto = 1;



  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {

	 



	 

	  if (HAL_GPIO_ReadPin(USER_Btn_GPIO_Port, USER_Btn_Pin)) {
		  printf("Lets go\r\n");
		  HAL_Delay(2000);


		  int headerInt = 0;
		  int endInt = 0;

	 	  			if (mutex == 1) {

	 	  				memset(frameBuffer, 0, sizeof frameBuffer);

	 	  				//OV2640_CaptureSnapshot((uint32_t) frameBuffer, imgRes);
	 	  				jpeg_test((uint32_t) frameBuffer, QVGA_320_240);



	 	  				while (1) {
	 	  					if (headerFound == 0 && frameBuffer[bufferPointer] == 0xFF
	 	  							&& frameBuffer[bufferPointer + 1] == 0xD8) {
	 	  						headerFound = 1;
	 	  						headerInt = bufferPointer;
	 	  					#ifdef DEBUG
	 	  						my_printf("Found header of JPEG file \r\n");
	 	  					#endif
	 	  					}
	 	  					if (headerFound == 1 && frameBuffer[bufferPointer] == 0xFF
	 	  							&& frameBuffer[bufferPointer + 1] == 0xD9) {
	 	  						bufferPointer = bufferPointer + 2;
	 	  					#ifdef DEBUG
	 	  						my_printf("Found end of JPEG file \r\n");
	 	  						#endif
	 	  						headerFound = 0;
	 	  						endInt = bufferPointer;
	 	  						break;
	 	  					}


	 	  					if (bufferPointer >= 65535) {
	 	  						printf("Error: Image size too large \r\n");
	 	  						break;
	 	  					}

	 	  					bufferPointer++;

	 	  				}

						#ifdef DEBUG
							my_printf("Image size: %d bytes \r\n",bufferPointer);
						#endif


	 	  				HAL_Delay(2000);


	 	  				HAL_UART_Transmit(&hlpuart1, frameBuffer, bufferPointer, HAL_MAX_DELAY);
	 	  				//HAL_UART_Transmit_DMA(&hlpuart1, frameBuffer, bufferPointer); //Use of DMA may be necessary for larger data streams.

					    HAL_Delay(2000);
					    bufferPointer = 0;
	 	  				mutex = 0;
	 	  				validateJpegInFramebuffer();

	 	  				printf("Databurst, Header: %d\n", headerInt);
	 	  				printf("Databurst, End: %d\n", headerInt);

	 	  				printf("Abgeschlossen \r\n");

	 	  			}
	 	  			takePhoto = 0;
	 	  		} else {
	 	  			mutex = 1;
	 	  		}


    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */
  }

  /* USER CODE END 3 */
}

/**
  * @brief System Clock Configuration
  * @retval None
  */
void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

  /** Configure the main internal regulator output voltage
  */
  if (HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1) != HAL_OK)
  {
    Error_Handler();
  }

  /** Initializes the RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_MSI;
  RCC_OscInitStruct.MSIState = RCC_MSI_ON;
  RCC_OscInitStruct.MSICalibrationValue = 0;
  RCC_OscInitStruct.MSIClockRange = RCC_MSIRANGE_6;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_MSI;
  RCC_OscInitStruct.PLL.PLLM = 1;
  RCC_OscInitStruct.PLL.PLLN = 24;
  RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
  RCC_OscInitStruct.PLL.PLLQ = RCC_PLLQ_DIV2;
  RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV2;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler();
  }

  /** Initializes the CPU, AHB and APB buses clocks
  */
  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
  {
    Error_Handler();
  }
  HAL_RCC_MCOConfig(RCC_MCO1, RCC_MCO1SOURCE_PLLCLK, RCC_MCODIV_2);
}

/**
  * @brief DCMI Initialization Function
  * @param None
  * @retval None
  */
static void MX_DCMI_Init(void)
{

  /* USER CODE BEGIN DCMI_Init 0 */

  /* USER CODE END DCMI_Init 0 */

  /* USER CODE BEGIN DCMI_Init 1 */

  /* USER CODE END DCMI_Init 1 */
  hdcmi.Instance = DCMI;
  hdcmi.Init.SynchroMode = DCMI_SYNCHRO_HARDWARE;
  hdcmi.Init.PCKPolarity = DCMI_PCKPOLARITY_RISING;
  hdcmi.Init.VSPolarity = DCMI_VSPOLARITY_LOW;
  hdcmi.Init.HSPolarity = DCMI_HSPOLARITY_LOW;
  hdcmi.Init.CaptureRate = DCMI_CR_ALL_FRAME;
  hdcmi.Init.ExtendedDataMode = DCMI_EXTEND_DATA_8B;
  hdcmi.Init.JPEGMode = DCMI_JPEG_ENABLE;
  hdcmi.Init.ByteSelectMode = DCMI_BSM_ALL;
  hdcmi.Init.ByteSelectStart = DCMI_OEBS_ODD;
  hdcmi.Init.LineSelectMode = DCMI_LSM_ALL;
  hdcmi.Init.LineSelectStart = DCMI_OELS_ODD;
  if (HAL_DCMI_Init(&hdcmi) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN DCMI_Init 2 */

  /* USER CODE END DCMI_Init 2 */

}

/**
  * @brief LPUART1 Initialization Function
  * @param None
  * @retval None
  */
static void MX_LPUART1_UART_Init(void)
{

  /* USER CODE BEGIN LPUART1_Init 0 */

  /* USER CODE END LPUART1_Init 0 */

  /* USER CODE BEGIN LPUART1_Init 1 */

  /* USER CODE END LPUART1_Init 1 */
  hlpuart1.Instance = LPUART1;
  hlpuart1.Init.BaudRate = 115200;
  hlpuart1.Init.WordLength = UART_WORDLENGTH_8B;
  hlpuart1.Init.StopBits = UART_STOPBITS_1;
  hlpuart1.Init.Parity = UART_PARITY_NONE;
  hlpuart1.Init.Mode = UART_MODE_TX_RX;
  hlpuart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
  hlpuart1.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
  hlpuart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
  if (HAL_UART_Init(&hlpuart1) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN LPUART1_Init 2 */

  /* USER CODE END LPUART1_Init 2 */

}

/**
  * Enable DMA controller clock
  */
static void MX_DMA_Init(void)
{

  /* DMA controller clock enable */
  __HAL_RCC_DMA2_CLK_ENABLE();

  /* DMA interrupt init */
  /* DMA2_Channel5_IRQn interrupt configuration */
  HAL_NVIC_SetPriority(DMA2_Channel5_IRQn, 0, 0);
  HAL_NVIC_EnableIRQ(DMA2_Channel5_IRQn);
  /* DMA2_Channel6_IRQn interrupt configuration */
  HAL_NVIC_SetPriority(DMA2_Channel6_IRQn, 0, 0);
  HAL_NVIC_EnableIRQ(DMA2_Channel6_IRQn);

}

/**
  * @brief GPIO Initialization Function
  * @param None
  * @retval None
  */
static void MX_GPIO_Init(void)
{
  GPIO_InitTypeDef GPIO_InitStruct = {0};
/* USER CODE BEGIN MX_GPIO_Init_1 */
/* USER CODE END MX_GPIO_Init_1 */

  /* GPIO Ports Clock Enable */
  __HAL_RCC_GPIOE_CLK_ENABLE();
  __HAL_RCC_GPIOC_CLK_ENABLE();
  __HAL_RCC_GPIOH_CLK_ENABLE();
  __HAL_RCC_GPIOA_CLK_ENABLE();
  __HAL_RCC_GPIOB_CLK_ENABLE();
  __HAL_RCC_GPIOG_CLK_ENABLE();
  HAL_PWREx_EnableVddIO2();
  __HAL_RCC_GPIOD_CLK_ENABLE();

  /*Configure GPIO pin Output Level */
  HAL_GPIO_WritePin(GPIOB, LED1_Pin|LED3_Pin|LED2_Pin, GPIO_PIN_RESET);

  /*Configure GPIO pin Output Level */
  HAL_GPIO_WritePin(OV5640_PWDN_GPIO_Port, OV5640_PWDN_Pin, GPIO_PIN_SET);

  /*Configure GPIO pin Output Level */
  HAL_GPIO_WritePin(USB_PowerSwitchOn_GPIO_Port, USB_PowerSwitchOn_Pin, GPIO_PIN_RESET);

  /*Configure GPIO pin Output Level */
  HAL_GPIO_WritePin(GPIOB, OV5640_SIOC_Pin|OV5640_SIOD_Pin, GPIO_PIN_SET);

  /*Configure GPIO pin : USER_Btn_Pin */
  GPIO_InitStruct.Pin = USER_Btn_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  HAL_GPIO_Init(USER_Btn_GPIO_Port, &GPIO_InitStruct);

  /*Configure GPIO pins : LED1_Pin LED3_Pin LED2_Pin */
  GPIO_InitStruct.Pin = LED1_Pin|LED3_Pin|LED2_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

  /*Configure GPIO pin : WAKE_UP_KEY_Pin */
  GPIO_InitStruct.Pin = WAKE_UP_KEY_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
  GPIO_InitStruct.Pull = GPIO_PULLUP;
  HAL_GPIO_Init(WAKE_UP_KEY_GPIO_Port, &GPIO_InitStruct);

  /*Configure GPIO pins : OV5640_PWDN_Pin USB_PowerSwitchOn_Pin */
  GPIO_InitStruct.Pin = OV5640_PWDN_Pin|USB_PowerSwitchOn_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  HAL_GPIO_Init(GPIOG, &GPIO_InitStruct);

  /*Configure GPIO pin : DCMI_XCLK_Pin */
  GPIO_InitStruct.Pin = DCMI_XCLK_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  GPIO_InitStruct.Alternate = GPIO_AF0_MCO;
  HAL_GPIO_Init(DCMI_XCLK_GPIO_Port, &GPIO_InitStruct);

  /*Configure GPIO pins : OV5640_SIOC_Pin OV5640_SIOD_Pin */
  GPIO_InitStruct.Pin = OV5640_SIOC_Pin|OV5640_SIOD_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_OD;
  GPIO_InitStruct.Pull = GPIO_PULLUP;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
  HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

/* USER CODE BEGIN MX_GPIO_Init_2 */
/* USER CODE END MX_GPIO_Init_2 */
}

/* USER CODE BEGIN 4 */

void debugPrint(UART_HandleTypeDef *huart, char _out[]){
	//HAL_StatusTypeDef HAL_RESULT;
	HAL_UART_Transmit(huart, (uint8_t *) _out, strlen(_out), 10);
	asm("nop");
	//HAL_UART_Transmit_IT(&huart2,(uint8_t *) _out, strlen(_out));
}

//ProteusIII Funktion delay auf HAL_Delay umleiten
void delay(unsigned int sleepFor)
{
	HAL_Delay(sleepFor);
}

/* USER CODE END 4 */

/**
  * @brief  This function is executed in case of error occurrence.
  * @retval None
  */
void Error_Handler(void)
{
  /* USER CODE BEGIN Error_Handler_Debug */
  /* User can add his own implementation to report the HAL error return state */
  __disable_irq();
  while (1)
  {
  }
  /* USER CODE END Error_Handler_Debug */
}

#ifdef  USE_FULL_ASSERT
/**
  * @brief  Reports the name of the source file and the source line number
  *         where the assert_param error has occurred.
  * @param  file: pointer to the source file name
  * @param  line: assert_param error line source number
  * @retval None
  */
void assert_failed(uint8_t *file, uint32_t line)
{
  /* USER CODE BEGIN 6 */
  /* User can add his own implementation to report the file name and line number,
     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  /* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */