/* 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 "SDRAM.h"
#include "lvgl.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 */


#define MY_DISP_HOR_RES    800
#define MY_DISP_VER_RES    480


static int32_t            x1_flush;
static int32_t            y1_flush;
static int32_t            x2_flush;
static int32_t            y2_fill;
static int32_t            y_fill_act;
static const lv_color_t * buf_to_flush;
static lv_disp_drv_t disp_drv;                   /*Descriptor of a display driver*/



static void disp_flush(lv_disp_drv_t * disp_drv, const lv_area_t * area, lv_color_t * color_p);
static void ex_disp_clean_dcache(lv_disp_drv_t *drv);
static void DMA_TransferComplete(DMA_HandleTypeDef *han);
static void DMA_TransferError(DMA_HandleTypeDef *han);



/* USER CODE END PM */

/* Private variables ---------------------------------------------------------*/

LTDC_HandleTypeDef hltdc;

DMA_HandleTypeDef hdma_memtomem_dma2_stream0;
SDRAM_HandleTypeDef hsdram1;

/* USER CODE BEGIN PV */

/* 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_FMC_Init(void);
static void MX_LTDC_Init(void);
/* USER CODE BEGIN PFP */


uint16_t  * lcd_fb = (uint16_t*) (0xC0000000);


/* USER CODE END PFP */

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





static void disp_flush(lv_disp_drv_t * disp_drv, const lv_area_t * area, lv_color_t * color_p)
{



int32_t x1= area->x1;
int32_t x2= area->x2;
int32_t y1= area->y1;
int32_t y2= area->y2;

/*Return if the area is out the screen*/

   if(x2 < 0) return;
   if(y2 < 0) return;
   if(x1 > MY_DISP_HOR_RES - 1) return;
   if(y1 > MY_DISP_VER_RES - 1) return;

	/*Truncate the area to the screen*/
	int32_t act_x1 = x1 < 0 ? 0 : x1;
	int32_t act_y1 = y1 < 0 ? 0 : y1;
	int32_t act_x2 = x2 > MY_DISP_HOR_RES - 1 ? MY_DISP_HOR_RES - 1 : x2;
	int32_t act_y2 = y2 > MY_DISP_VER_RES - 1 ? MY_DISP_VER_RES - 1 : y2;

	x1_flush = act_x1;
	y1_flush = act_y1;
	x2_flush = act_x2;
	y2_fill = act_y2;
	y_fill_act = act_y1;
	buf_to_flush = color_p;

	SCB_CleanInvalidateDCache();
	SCB_InvalidateICache();



	 /*##-7- Start the DMA transfer using the interrupt mode #*/
		/* Configure the source, destination and buffer size DMA fields and Start DMA Stream transfer */
		/* Enable All the DMA interrupts */
		HAL_StatusTypeDef err;
		uint32_t length = (x2_flush - x1_flush + 1);

		err = HAL_DMA_Start_IT(&hdma_memtomem_dma2_stream0,
				(uint32_t)buf_to_flush,
				(uint32_t) &lcd_fb[y_fill_act * MY_DISP_HOR_RES + x1_flush],
				 length);


		if(err != HAL_OK)
		{
			while(1);	/*Halt on error*/
		}



    /*IMPORTANT!!!
     *Inform the graphics library that you are ready with the flushing*/
    lv_disp_flush_ready(disp_drv);
}



static void DMA_TransferComplete(DMA_HandleTypeDef *han)
{
    y_fill_act ++;

    if(y_fill_act > y2_fill)
    {
    	SCB_CleanInvalidateDCache();
    	SCB_InvalidateICache();
        lv_disp_flush_ready(&disp_drv);
    }
    else
    {
    	uint32_t length = (x2_flush - x1_flush + 1);
        buf_to_flush += x2_flush - x1_flush + 1;
        /*##-7- Start the DMA transfer using the interrupt mode ####################*/
        /* Configure the source, destination and buffer size DMA fields and Start DMA Stream transfer */
        /* Enable All the DMA interrupts */

        if(HAL_DMA_Start_IT(    han,
        		(uint32_t)buf_to_flush,
        		(uint32_t)&lcd_fb[y_fill_act * MY_DISP_HOR_RES + x1_flush],
                 length) != HAL_OK)
        {
            while(1);	/*Halt on error*/
        }
    }
}



static void DMA_TransferError(DMA_HandleTypeDef *han)
{

}




static void ex_disp_clean_dcache(lv_disp_drv_t *drv)
{
    SCB_CleanInvalidateDCache();
}




void lv_port_disp_init(void)
{

	 MX_DMA_Init();

     static lv_disp_draw_buf_t draw_buf_dsc_1;
     static lv_color_t buf1_1[MY_DISP_HOR_RES * 10];
     lv_disp_draw_buf_init(&draw_buf_dsc_1, buf1_1, NULL, MY_DISP_HOR_RES * 10);   /*Initialize the display buffer*/

    /*-----------------------------------
     * Register the display in LVGL
     *----------------------------------*/

    lv_disp_drv_init(&disp_drv);



    /*Set the resolution of the display*/
    disp_drv.hor_res = MY_DISP_HOR_RES;/*800*/
    disp_drv.ver_res = MY_DISP_VER_RES;/*480*/

    /*Used to copy the buffer's content to the display*/
    disp_drv.flush_cb = disp_flush;
    disp_drv.clean_dcache_cb = ex_disp_clean_dcache;

    /*Set a display buffer*/
    disp_drv.draw_buf = &draw_buf_dsc_1;

    /*Finally register the driver*/
    lv_disp_drv_register(&disp_drv);
}




/* USER CODE END 0 */

/**
  * @brief  The application entry point.
  * @retval int
  */
int main(void)
{
  /* USER CODE BEGIN 1 */

  /* 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_FMC_Init();
  MX_LTDC_Init();
  /* USER CODE BEGIN 2 */

  lv_init();


  /*Initialize `disp_buf` with the buffer(s) */

  lv_port_disp_init();

  //lv_example_get_started_1();

   lv_demo_widgets();

  /* USER CODE END 2 */

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

    /* USER CODE BEGIN 3 */

	  lv_timer_handler();
	  HAL_Delay(10);
	  //lv_tick_inc(30);
	  //lv_task_handler();




  }
  /* USER CODE END 3 */
}

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

  /** Supply configuration update enable
  */
  HAL_PWREx_ConfigSupply(PWR_LDO_SUPPLY);

  /** Configure the main internal regulator output voltage
  */
  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);

  while(!__HAL_PWR_GET_FLAG(PWR_FLAG_VOSRDY)) {}

  __HAL_RCC_SYSCFG_CLK_ENABLE();
  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE0);

  while(!__HAL_PWR_GET_FLAG(PWR_FLAG_VOSRDY)) {}

  /** Initializes the RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
  RCC_OscInitStruct.HSIState = RCC_HSI_DIV1;
  RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
  RCC_OscInitStruct.PLL.PLLM = 32;
  RCC_OscInitStruct.PLL.PLLN = 480;
  RCC_OscInitStruct.PLL.PLLP = 2;
  RCC_OscInitStruct.PLL.PLLQ = 9;
  RCC_OscInitStruct.PLL.PLLR = 2;
  RCC_OscInitStruct.PLL.PLLRGE = RCC_PLL1VCIRANGE_1;
  RCC_OscInitStruct.PLL.PLLVCOSEL = RCC_PLL1VCOWIDE;
  RCC_OscInitStruct.PLL.PLLFRACN = 0;
  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_CLOCKTYPE_D3PCLK1|RCC_CLOCKTYPE_D1PCLK1;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  RCC_ClkInitStruct.SYSCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_HCLK_DIV2;
  RCC_ClkInitStruct.APB3CLKDivider = RCC_APB3_DIV2;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_APB1_DIV2;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_APB2_DIV2;
  RCC_ClkInitStruct.APB4CLKDivider = RCC_APB4_DIV2;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_4) != HAL_OK)
  {
    Error_Handler();
  }
}

/**
  * @brief LTDC Initialization Function
  * @param None
  * @retval None
  */
static void MX_LTDC_Init(void)
{

  /* USER CODE BEGIN LTDC_Init 0 */

  /* USER CODE END LTDC_Init 0 */

  LTDC_LayerCfgTypeDef pLayerCfg = {0};

  /* USER CODE BEGIN LTDC_Init 1 */

  /* USER CODE END LTDC_Init 1 */
  hltdc.Instance = LTDC;
  hltdc.Init.HSPolarity = LTDC_HSPOLARITY_AL;
  hltdc.Init.VSPolarity = LTDC_VSPOLARITY_AL;
  hltdc.Init.DEPolarity = LTDC_DEPOLARITY_AL;
  hltdc.Init.PCPolarity = LTDC_PCPOLARITY_IPC;
  hltdc.Init.HorizontalSync = 0;
  hltdc.Init.VerticalSync = 0;
  hltdc.Init.AccumulatedHBP = 46;
  hltdc.Init.AccumulatedVBP = 23;
  hltdc.Init.AccumulatedActiveW = 846;
  hltdc.Init.AccumulatedActiveH = 503;
  hltdc.Init.TotalWidth = 1056;
  hltdc.Init.TotalHeigh = 525;
  hltdc.Init.Backcolor.Blue = 0;
  hltdc.Init.Backcolor.Green = 0;
  hltdc.Init.Backcolor.Red = 0;
  if (HAL_LTDC_Init(&hltdc) != HAL_OK)
  {
    Error_Handler();
  }
  pLayerCfg.WindowX0 = 0;
  pLayerCfg.WindowX1 = 800;
  pLayerCfg.WindowY0 = 0;
  pLayerCfg.WindowY1 = 480;
  pLayerCfg.PixelFormat = LTDC_PIXEL_FORMAT_RGB565;
  pLayerCfg.Alpha = 255;
  pLayerCfg.Alpha0 = 0;
  pLayerCfg.BlendingFactor1 = LTDC_BLENDING_FACTOR1_PAxCA;
  pLayerCfg.BlendingFactor2 = LTDC_BLENDING_FACTOR2_PAxCA;
  pLayerCfg.FBStartAdress = 0xC0000000;
  pLayerCfg.ImageWidth = 800;
  pLayerCfg.ImageHeight = 480;
  pLayerCfg.Backcolor.Blue = 0;
  pLayerCfg.Backcolor.Green = 0;
  pLayerCfg.Backcolor.Red = 0;
  if (HAL_LTDC_ConfigLayer(&hltdc, &pLayerCfg, 0) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN LTDC_Init 2 */

  /* USER CODE END LTDC_Init 2 */

}

/**
  * Enable DMA controller clock
  * Configure DMA for memory to memory transfers
  *   hdma_memtomem_dma2_stream0
  */
static void MX_DMA_Init(void)
{

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

  /* Configure DMA request hdma_memtomem_dma2_stream0 on DMA2_Stream0 */
  hdma_memtomem_dma2_stream0.Instance = DMA2_Stream0;
  hdma_memtomem_dma2_stream0.Init.Request = DMA_REQUEST_MEM2MEM;
  hdma_memtomem_dma2_stream0.Init.Direction = DMA_MEMORY_TO_MEMORY;
  hdma_memtomem_dma2_stream0.Init.PeriphInc = DMA_PINC_ENABLE;
  hdma_memtomem_dma2_stream0.Init.MemInc = DMA_MINC_ENABLE;
  hdma_memtomem_dma2_stream0.Init.PeriphDataAlignment = DMA_PDATAALIGN_HALFWORD;
  hdma_memtomem_dma2_stream0.Init.MemDataAlignment = DMA_MDATAALIGN_HALFWORD;
  hdma_memtomem_dma2_stream0.Init.Mode = DMA_NORMAL;
  hdma_memtomem_dma2_stream0.Init.Priority = DMA_PRIORITY_HIGH;
  hdma_memtomem_dma2_stream0.Init.FIFOMode = DMA_FIFOMODE_ENABLE;
  hdma_memtomem_dma2_stream0.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_1QUARTERFULL;
  hdma_memtomem_dma2_stream0.Init.MemBurst = DMA_MBURST_SINGLE;
  hdma_memtomem_dma2_stream0.Init.PeriphBurst = DMA_PBURST_SINGLE;
  if (HAL_DMA_Init(&hdma_memtomem_dma2_stream0) != HAL_OK)
  {
    Error_Handler( );
  }

  	HAL_DMA_RegisterCallback(&hdma_memtomem_dma2_stream0, HAL_DMA_XFER_CPLT_CB_ID, DMA_TransferComplete);
  	HAL_DMA_RegisterCallback(&hdma_memtomem_dma2_stream0, HAL_DMA_XFER_ERROR_CB_ID, DMA_TransferError);

  /* DMA interrupt init */
  /* DMA2_Stream0_IRQn interrupt configuration */
  HAL_NVIC_SetPriority(DMA2_Stream0_IRQn, 0, 0);
  HAL_NVIC_EnableIRQ(DMA2_Stream0_IRQn);

}



/* FMC initialization function */
static void MX_FMC_Init(void)
{

  /* USER CODE BEGIN FMC_Init 0 */

  /* USER CODE END FMC_Init 0 */

  FMC_SDRAM_TimingTypeDef SdramTiming = {0};

  /* USER CODE BEGIN FMC_Init 1 */

  /* USER CODE END FMC_Init 1 */

  /** Perform the SDRAM1 memory initialization sequence
  */
  hsdram1.Instance = FMC_SDRAM_DEVICE;
  /* hsdram1.Init */
  hsdram1.Init.SDBank = FMC_SDRAM_BANK1;
  hsdram1.Init.ColumnBitsNumber = FMC_SDRAM_COLUMN_BITS_NUM_9;
  hsdram1.Init.RowBitsNumber = FMC_SDRAM_ROW_BITS_NUM_13;
  hsdram1.Init.MemoryDataWidth = FMC_SDRAM_MEM_BUS_WIDTH_16;
  hsdram1.Init.InternalBankNumber = FMC_SDRAM_INTERN_BANKS_NUM_4;
  hsdram1.Init.CASLatency = FMC_SDRAM_CAS_LATENCY_3;
  hsdram1.Init.WriteProtection = FMC_SDRAM_WRITE_PROTECTION_DISABLE;
  hsdram1.Init.SDClockPeriod = FMC_SDRAM_CLOCK_PERIOD_2;
  hsdram1.Init.ReadBurst = FMC_SDRAM_RBURST_ENABLE;
  hsdram1.Init.ReadPipeDelay = FMC_SDRAM_RPIPE_DELAY_0;
  /* SdramTiming */
  SdramTiming.LoadToActiveDelay = 2;
  SdramTiming.ExitSelfRefreshDelay = 7;
  SdramTiming.SelfRefreshTime = 5;
  SdramTiming.RowCycleDelay = 6;
  SdramTiming.WriteRecoveryTime = 3;
  SdramTiming.RPDelay = 2;
  SdramTiming.RCDDelay = 2;

  if (HAL_SDRAM_Init(&hsdram1, &SdramTiming) != HAL_OK)
  {
    Error_Handler( );
  }

  /* USER CODE BEGIN FMC_Init 2 */
  SDRAM_Initialization();
  /* USER CODE END FMC_Init 2 */
}

/**
  * @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_GPIOI_CLK_ENABLE();
  __HAL_RCC_GPIOF_CLK_ENABLE();
  __HAL_RCC_GPIOC_CLK_ENABLE();
  __HAL_RCC_GPIOG_CLK_ENABLE();
  __HAL_RCC_GPIOE_CLK_ENABLE();
  __HAL_RCC_GPIOH_CLK_ENABLE();
  __HAL_RCC_GPIOD_CLK_ENABLE();
  __HAL_RCC_GPIOA_CLK_ENABLE();
  __HAL_RCC_GPIOB_CLK_ENABLE();

  /*Configure GPIO pin Output Level */
  HAL_GPIO_WritePin(LCD_BL_GPIO_Port, LCD_BL_Pin, GPIO_PIN_SET);

  /*Configure GPIO pin : LCD_BL_Pin */
  GPIO_InitStruct.Pin = LCD_BL_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  HAL_GPIO_Init(LCD_BL_GPIO_Port, &GPIO_InitStruct);

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

/* USER CODE BEGIN 4 */



/* 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 */