/**
  ******************************************************************************
  * @file    stm32746g_discovery_lcd.c
  * @author  MCD Application Team
  * @brief   This file includes the driver for Liquid Crystal Display (LCD) module
  *          mounted on STM32746G-Discovery board.
  @verbatim
  1. How To use this driver:
  --------------------------
     - This driver is used to drive directly an LCD TFT using the LTDC controller.
     - This driver uses timing and setting for RK043FN48H LCD.
  
  2. Driver description:
  ---------------------
    + Initialization steps:
       o Initialize the LCD using the BSP_LCD_Init() function.
       o Apply the Layer configuration using the BSP_LCD_LayerDefaultInit() function.    
       o Select the LCD layer to be used using the BSP_LCD_SelectLayer() function.
       o Enable the LCD display using the BSP_LCD_DisplayOn() function.
  
    + Options
       o Configure and enable the color keying functionality using the 
         BSP_LCD_SetColorKeying() function.
       o Modify in the fly the transparency and/or the frame buffer address
         using the following functions:
         - BSP_LCD_SetTransparency()
         - BSP_LCD_SetLayerAddress() 
    
    + Display on LCD
       o Clear the hole LCD using BSP_LCD_Clear() function or only one specified string
         line using the BSP_LCD_ClearStringLine() function.
       o Display a character on the specified line and column using the BSP_LCD_DisplayChar()
         function or a complete string line using the BSP_LCD_DisplayStringAtLine() function.
       o Display a string line on the specified position (x,y in pixel) and align mode
         using the BSP_LCD_DisplayStringAtLine() function.          
       o Draw and fill a basic shapes (dot, line, rectangle, circle, ellipse, .. bitmap) 
         on LCD using the available set of functions.       
  @endverbatim
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
  *
  * Redistribution and use in source and binary forms, with or without modification,
  * are permitted provided that the following conditions are met:
  *   1. Redistributions of source code must retain the above copyright notice,
  *      this list of conditions and the following disclaimer.
  *   2. Redistributions in binary form must reproduce the above copyright notice,
  *      this list of conditions and the following disclaimer in the documentation
  *      and/or other materials provided with the distribution.
  *   3. Neither the name of STMicroelectronics nor the names of its contributors
  *      may be used to endorse or promote products derived from this software
  *      without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  ******************************************************************************
  */ 

/* Dependencies
- stm32746g_discovery.c
- stm32746g_discovery_sdram.c
- stm32f7xx_hal_ltdc.c
- stm32f7xx_hal_ltdc_ex.c
- stm32f7xx_hal_dma2d.c
- stm32f7xx_hal_rcc_ex.c
- stm32f7xx_hal_gpio.c
- stm32f7xx_hal_cortex.c
- rk043fn48h.h
- fonts.h
- font24.c
- font20.c
- font16.c
- font12.c
- font8.c"
EndDependencies */

/* Includes ------------------------------------------------------------------*/
#include "stm32746g_discovery_lcd.h"
#include "../../Fonts/fonts.h"
#include "../../Fonts/font24.c"
#include "../../Fonts/font20.c"
#include "../../Fonts/font16.c"
#include "../../Fonts/font12.c"
#include "../../Fonts/font8.c"

/** @addtogroup BSP
  * @{
  */

/** @addtogroup STM32746G_DISCOVERY
  * @{
  */
    
/** @addtogroup STM32746G_DISCOVERY_LCD
  * @{
  */ 

/** @defgroup STM32746G_DISCOVERY_LCD_Private_TypesDefinitions STM32746G_DISCOVERY_LCD Private Types Definitions
  * @{
  */ 
/**
  * @}
  */ 

/** @defgroup STM32746G_DISCOVERY_LCD_Private_Defines STM32746G_DISCOVERY LCD Private Defines
  * @{
  */
#define POLY_X(Z)              ((int32_t)((Points + Z)->X))
#define POLY_Y(Z)              ((int32_t)((Points + Z)->Y))      
/**
  * @}
  */ 

/** @defgroup STM32746G_DISCOVERY_LCD_Private_Macros STM32746G_DISCOVERY_LCD Private Macros
  * @{
  */
#define ABS(X)  ((X) > 0 ? (X) : -(X))      
/**
  * @}
  */ 
    
/** @defgroup STM32746G_DISCOVERY_LCD_Private_Variables STM32746G_DISCOVERY_LCD Private Variables
  * @{
  */ 
LTDC_HandleTypeDef  hLtdcHandler;
static DMA2D_HandleTypeDef hDma2dHandler;

/* Default LCD configuration with LCD Layer 1 */
static uint32_t            ActiveLayer = 0;
static LCD_DrawPropTypeDef DrawProp[MAX_LAYER_NUMBER];
/**
  * @}
  */ 

/** @defgroup STM32746G_DISCOVERY_LCD_Private_FunctionPrototypes STM32746G_DISCOVERY_LCD Private Function Prototypes
  * @{
  */ 
static void DrawChar(uint16_t Xpos, uint16_t Ypos, const uint8_t *c);
static void FillTriangle(uint16_t x1, uint16_t x2, uint16_t x3, uint16_t y1, uint16_t y2, uint16_t y3);
static void LL_FillBuffer(uint32_t LayerIndex, void *pDst, uint32_t xSize, uint32_t ySize, uint32_t OffLine, uint32_t ColorIndex);
static void LL_ConvertLineToARGB8888(void * pSrc, void *pDst, uint32_t xSize, uint32_t ColorMode);
/**
  * @}
  */ 

/** @defgroup STM32746G_DISCOVERY_LCD_Exported_Functions STM32746G_DISCOVERY_LCD Exported Functions
  * @{
  */

/**
  * @brief  Initializes the LCD.
  * @retval LCD state
  */
uint8_t BSP_LCD_Init(void)
{    
  /* Select the used LCD */

  /* The RK043FN48H LCD 480x272 is selected */
  /* Timing Configuration */
  hLtdcHandler.Init.HorizontalSync = (RK043FN48H_HSYNC - 1);
  hLtdcHandler.Init.VerticalSync = (RK043FN48H_VSYNC - 1);
  hLtdcHandler.Init.AccumulatedHBP = (RK043FN48H_HSYNC + RK043FN48H_HBP - 1);
  hLtdcHandler.Init.AccumulatedVBP = (RK043FN48H_VSYNC + RK043FN48H_VBP - 1);
  hLtdcHandler.Init.AccumulatedActiveH = (RK043FN48H_HEIGHT + RK043FN48H_VSYNC + RK043FN48H_VBP - 1);
  hLtdcHandler.Init.AccumulatedActiveW = (RK043FN48H_WIDTH + RK043FN48H_HSYNC + RK043FN48H_HBP - 1);
  hLtdcHandler.Init.TotalHeigh = (RK043FN48H_HEIGHT + RK043FN48H_VSYNC + RK043FN48H_VBP + RK043FN48H_VFP - 1);
  hLtdcHandler.Init.TotalWidth = (RK043FN48H_WIDTH + RK043FN48H_HSYNC + RK043FN48H_HBP + RK043FN48H_HFP - 1);
  
  /* LCD clock configuration */
  BSP_LCD_ClockConfig(&hLtdcHandler, NULL);

  /* Initialize the LCD pixel width and pixel height */
  hLtdcHandler.LayerCfg->ImageWidth  = RK043FN48H_WIDTH;
  hLtdcHandler.LayerCfg->ImageHeight = RK043FN48H_HEIGHT;

  /* Background value */
  hLtdcHandler.Init.Backcolor.Blue = 0;
  hLtdcHandler.Init.Backcolor.Green = 0;
  hLtdcHandler.Init.Backcolor.Red = 0;
  
  /* Polarity */
  hLtdcHandler.Init.HSPolarity = LTDC_HSPOLARITY_AL;
  hLtdcHandler.Init.VSPolarity = LTDC_VSPOLARITY_AL; 
  hLtdcHandler.Init.DEPolarity = LTDC_DEPOLARITY_AL;  
  hLtdcHandler.Init.PCPolarity = LTDC_PCPOLARITY_IPC;
  hLtdcHandler.Instance = LTDC;

  if(HAL_LTDC_GetState(&hLtdcHandler) == HAL_LTDC_STATE_RESET)
  {
    /* Initialize the LCD Msp: this __weak function can be rewritten by the application */
    BSP_LCD_MspInit(&hLtdcHandler, NULL);
  }
  HAL_LTDC_Init(&hLtdcHandler);

  /* Assert display enable LCD_DISP pin */
  HAL_GPIO_WritePin(LCD_DISP_GPIO_PORT, LCD_DISP_PIN, GPIO_PIN_SET);

  /* Assert backlight LCD_BL_CTRL pin */
  HAL_GPIO_WritePin(LCD_BL_CTRL_GPIO_PORT, LCD_BL_CTRL_PIN, GPIO_PIN_SET);

#if !defined(DATA_IN_ExtSDRAM)
  /* Initialize the SDRAM */
  BSP_SDRAM_Init();
#endif
    
  /* Initialize the font */
  BSP_LCD_SetFont(&LCD_DEFAULT_FONT);
  
  return LCD_OK;
}

/**
  * @brief  DeInitializes the LCD.
  * @retval LCD state
  */
uint8_t BSP_LCD_DeInit(void)
{ 
  /* Initialize the hLtdcHandler Instance parameter */
  hLtdcHandler.Instance = LTDC;

 /* Disable LTDC block */
  __HAL_LTDC_DISABLE(&hLtdcHandler);

  /* DeInit the LTDC */
  HAL_LTDC_DeInit(&hLtdcHandler);

  /* DeInit the LTDC MSP : this __weak function can be rewritten by the application */
  BSP_LCD_MspDeInit(&hLtdcHandler, NULL);

  return LCD_OK;
}

/**
  * @brief  Gets the LCD X size.
  * @retval Used LCD X size
  */
uint32_t BSP_LCD_GetXSize(void)
{
  return hLtdcHandler.LayerCfg[ActiveLayer].ImageWidth;
}

/**
  * @brief  Gets the LCD Y size.
  * @retval Used LCD Y size
  */
uint32_t BSP_LCD_GetYSize(void)
{
  return hLtdcHandler.LayerCfg[ActiveLayer].ImageHeight;
}

/**
  * @brief  Set the LCD X size.
  * @param  imageWidthPixels : image width in pixels unit
  * @retval None
  */
void BSP_LCD_SetXSize(uint32_t imageWidthPixels)
{
  hLtdcHandler.LayerCfg[ActiveLayer].ImageWidth = imageWidthPixels;
}

/**
  * @brief  Set the LCD Y size.
  * @param  imageHeightPixels : image height in lines unit
  * @retval None
  */
void BSP_LCD_SetYSize(uint32_t imageHeightPixels)
{
  hLtdcHandler.LayerCfg[ActiveLayer].ImageHeight = imageHeightPixels;
}

/**
  * @brief  Initializes the LCD layer in ARGB8888 format (32 bits per pixel).
  * @param  LayerIndex: Layer foreground or background
  * @param  FB_Address: Layer frame buffer
  * @retval None
  */
void BSP_LCD_LayerDefaultInit(uint16_t LayerIndex, uint32_t FB_Address)
{     
  LCD_LayerCfgTypeDef  layer_cfg;

  /* Layer Init */
  layer_cfg.WindowX0 = 0;
  layer_cfg.WindowX1 = BSP_LCD_GetXSize();
  layer_cfg.WindowY0 = 0;
  layer_cfg.WindowY1 = BSP_LCD_GetYSize(); 
  layer_cfg.PixelFormat = LTDC_PIXEL_FORMAT_ARGB8888;
  layer_cfg.FBStartAdress = FB_Address;
  layer_cfg.Alpha = 255;
  layer_cfg.Alpha0 = 0;
  layer_cfg.Backcolor.Blue = 0;
  layer_cfg.Backcolor.Green = 0;
  layer_cfg.Backcolor.Red = 0;
  layer_cfg.BlendingFactor1 = LTDC_BLENDING_FACTOR1_PAxCA;
  layer_cfg.BlendingFactor2 = LTDC_BLENDING_FACTOR2_PAxCA;
  layer_cfg.ImageWidth = BSP_LCD_GetXSize();
  layer_cfg.ImageHeight = BSP_LCD_GetYSize();
  
  HAL_LTDC_ConfigLayer(&hLtdcHandler, &layer_cfg, LayerIndex); 

  DrawProp[LayerIndex].BackColor = LCD_COLOR_WHITE;
  DrawProp[LayerIndex].pFont     = &Font24;
  DrawProp[LayerIndex].TextColor = LCD_COLOR_BLACK; 
}

/**
  * @brief  Initializes the LCD layer in RGB565 format (16 bits per pixel).
  * @param  LayerIndex: Layer foreground or background
  * @param  FB_Address: Layer frame buffer
  * @retval None
  */
void BSP_LCD_LayerRgb565Init(uint16_t LayerIndex, uint32_t FB_Address)
{     
  LCD_LayerCfgTypeDef  layer_cfg;

  /* Layer Init */
  layer_cfg.WindowX0 = 0;
  layer_cfg.WindowX1 = BSP_LCD_GetXSize();
  layer_cfg.WindowY0 = 0;
  layer_cfg.WindowY1 = BSP_LCD_GetYSize(); 
  layer_cfg.PixelFormat = LTDC_PIXEL_FORMAT_RGB565;
  layer_cfg.FBStartAdress = FB_Address;
  layer_cfg.Alpha = 255;
  layer_cfg.Alpha0 = 0;
  layer_cfg.Backcolor.Blue = 0;
  layer_cfg.Backcolor.Green = 0;
  layer_cfg.Backcolor.Red = 0;
  layer_cfg.BlendingFactor1 = LTDC_BLENDING_FACTOR1_PAxCA;
  layer_cfg.BlendingFactor2 = LTDC_BLENDING_FACTOR2_PAxCA;
  layer_cfg.ImageWidth = BSP_LCD_GetXSize();
  layer_cfg.ImageHeight = BSP_LCD_GetYSize();
  
  HAL_LTDC_ConfigLayer(&hLtdcHandler, &layer_cfg, LayerIndex); 

  DrawProp[LayerIndex].BackColor = LCD_COLOR_WHITE;
  DrawProp[LayerIndex].pFont     = &Font24;
  DrawProp[LayerIndex].TextColor = LCD_COLOR_BLACK; 
}

/**
  * @brief  Selects the LCD Layer.
  * @param  LayerIndex: Layer foreground or background
  * @retval None
  */
void BSP_LCD_SelectLayer(uint32_t LayerIndex)
{
  ActiveLayer = LayerIndex;
} 

/**
  * @brief  Sets an LCD Layer visible
  * @param  LayerIndex: Visible Layer
  * @param  State: New state of the specified layer
  *          This parameter can be one of the following values:
  *            @arg  ENABLE
  *            @arg  DISABLE 
  * @retval None
  */
void BSP_LCD_SetLayerVisible(uint32_t LayerIndex, FunctionalState State)
{
  if(State == ENABLE)
  {
    __HAL_LTDC_LAYER_ENABLE(&hLtdcHandler, LayerIndex);
  }
  else
  {
    __HAL_LTDC_LAYER_DISABLE(&hLtdcHandler, LayerIndex);
  }
  __HAL_LTDC_RELOAD_CONFIG(&hLtdcHandler);
} 

/**
  * @brief  Sets an LCD Layer visible without reloading.
  * @param  LayerIndex: Visible Layer
  * @param  State: New state of the specified layer
  *          This parameter can be one of the following values:
  *            @arg  ENABLE
  *            @arg  DISABLE 
  * @retval None
  */
void BSP_LCD_SetLayerVisible_NoReload(uint32_t LayerIndex, FunctionalState State)
{
  if(State == ENABLE)
  {
    __HAL_LTDC_LAYER_ENABLE(&hLtdcHandler, LayerIndex);
  }
  else
  {
    __HAL_LTDC_LAYER_DISABLE(&hLtdcHandler, LayerIndex);
  }
  /* Do not Sets the Reload  */
} 

/**
  * @brief  Configures the transparency.
  * @param  LayerIndex: Layer foreground or background.
  * @param  Transparency: Transparency
  *           This parameter must be a number between Min_Data = 0x00 and Max_Data = 0xFF 
  * @retval None
  */
void BSP_LCD_SetTransparency(uint32_t LayerIndex, uint8_t Transparency)
{    
  HAL_LTDC_SetAlpha(&hLtdcHandler, Transparency, LayerIndex);
}

/**
  * @brief  Configures the transparency without reloading.
  * @param  LayerIndex: Layer foreground or background.
  * @param  Transparency: Transparency
  *           This parameter must be a number between Min_Data = 0x00 and Max_Data = 0xFF 
  * @retval None
  */
void BSP_LCD_SetTransparency_NoReload(uint32_t LayerIndex, uint8_t Transparency)
{    
  HAL_LTDC_SetAlpha_NoReload(&hLtdcHandler, Transparency, LayerIndex);
}

/**
  * @brief  Sets an LCD layer frame buffer address.
  * @param  LayerIndex: Layer foreground or background
  * @param  Address: New LCD frame buffer value      
  * @retval None
  */
void BSP_LCD_SetLayerAddress(uint32_t LayerIndex, uint32_t Address)
{
  HAL_LTDC_SetAddress(&hLtdcHandler, Address, LayerIndex);
}

/**
  * @brief  Sets an LCD layer frame buffer address without reloading.
  * @param  LayerIndex: Layer foreground or background
  * @param  Address: New LCD frame buffer value      
  * @retval None
  */
void BSP_LCD_SetLayerAddress_NoReload(uint32_t LayerIndex, uint32_t Address)
{
  HAL_LTDC_SetAddress_NoReload(&hLtdcHandler, Address, LayerIndex);
}

/**
  * @brief  Sets display window.
  * @param  LayerIndex: Layer index
  * @param  Xpos: LCD X position
  * @param  Ypos: LCD Y position
  * @param  Width: LCD window width
  * @param  Height: LCD window height  
  * @retval None
  */
void BSP_LCD_SetLayerWindow(uint16_t LayerIndex, uint16_t Xpos, uint16_t Ypos, uint16_t Width, uint16_t Height)
{
  /* Reconfigure the layer size */
  HAL_LTDC_SetWindowSize(&hLtdcHandler, Width, Height, LayerIndex);
  
  /* Reconfigure the layer position */
  HAL_LTDC_SetWindowPosition(&hLtdcHandler, Xpos, Ypos, LayerIndex); 
}

/**
  * @brief  Sets display window without reloading.
  * @param  LayerIndex: Layer index
  * @param  Xpos: LCD X position
  * @param  Ypos: LCD Y position
  * @param  Width: LCD window width
  * @param  Height: LCD window height  
  * @retval None
  */
void BSP_LCD_SetLayerWindow_NoReload(uint16_t LayerIndex, uint16_t Xpos, uint16_t Ypos, uint16_t Width, uint16_t Height)
{
  /* Reconfigure the layer size */
  HAL_LTDC_SetWindowSize_NoReload(&hLtdcHandler, Width, Height, LayerIndex);
  
  /* Reconfigure the layer position */
  HAL_LTDC_SetWindowPosition_NoReload(&hLtdcHandler, Xpos, Ypos, LayerIndex); 
}

/**
  * @brief  Configures and sets the color keying.
  * @param  LayerIndex: Layer foreground or background
  * @param  RGBValue: Color reference
  * @retval None
  */
void BSP_LCD_SetColorKeying(uint32_t LayerIndex, uint32_t RGBValue)
{  
  /* Configure and Enable the color Keying for LCD Layer */
  HAL_LTDC_ConfigColorKeying(&hLtdcHandler, RGBValue, LayerIndex);
  HAL_LTDC_EnableColorKeying(&hLtdcHandler, LayerIndex);
}

/**
  * @brief  Configures and sets the color keying without reloading.
  * @param  LayerIndex: Layer foreground or background
  * @param  RGBValue: Color reference
  * @retval None
  */
void BSP_LCD_SetColorKeying_NoReload(uint32_t LayerIndex, uint32_t RGBValue)
{  
  /* Configure and Enable the color Keying for LCD Layer */
  HAL_LTDC_ConfigColorKeying_NoReload(&hLtdcHandler, RGBValue, LayerIndex);
  HAL_LTDC_EnableColorKeying_NoReload(&hLtdcHandler, LayerIndex);
}

/**
  * @brief  Disables the color keying.
  * @param  LayerIndex: Layer foreground or background
  * @retval None
  */
void BSP_LCD_ResetColorKeying(uint32_t LayerIndex)
{   
  /* Disable the color Keying for LCD Layer */
  HAL_LTDC_DisableColorKeying(&hLtdcHandler, LayerIndex);
}

/**
  * @brief  Disables the color keying without reloading.
  * @param  LayerIndex: Layer foreground or background
  * @retval None
  */
void BSP_LCD_ResetColorKeying_NoReload(uint32_t LayerIndex)
{   
  /* Disable the color Keying for LCD Layer */
  HAL_LTDC_DisableColorKeying_NoReload(&hLtdcHandler, LayerIndex);
}

/**
  * @brief  Disables the color keying without reloading.
  * @param  ReloadType: can be one of the following values 
  *         - LCD_RELOAD_IMMEDIATE 
  *         - LCD_RELOAD_VERTICAL_BLANKING
  * @retval None
  */
void BSP_LCD_Reload(uint32_t ReloadType)
{
  HAL_LTDC_Reload (&hLtdcHandler, ReloadType);
}

/**
  * @brief  Sets the LCD text color.
  * @param  Color: Text color code ARGB(8-8-8-8)
  * @retval None
  */
void BSP_LCD_SetTextColor(uint32_t Color)
{
  DrawProp[ActiveLayer].TextColor = Color;
}

/**
  * @brief  Gets the LCD text color.
  * @retval Used text color.
  */
uint32_t BSP_LCD_GetTextColor(void)
{
  return DrawProp[ActiveLayer].TextColor;
}

/**
  * @brief  Sets the LCD background color.
  * @param  Color: Layer background color code ARGB(8-8-8-8)
  * @retval None
  */
void BSP_LCD_SetBackColor(uint32_t Color)
{
  DrawProp[ActiveLayer].BackColor = Color;
}

/**
  * @brief  Gets the LCD background color.
  * @retval Used background colour
  */
uint32_t BSP_LCD_GetBackColor(void)
{
  return DrawProp[ActiveLayer].BackColor;
}

/**
  * @brief  Sets the LCD text font.
  * @param  fonts: Layer font to be used
  * @retval None
  */
void BSP_LCD_SetFont(sFONT *fonts)
{
  DrawProp[ActiveLayer].pFont = fonts;
}

/**
  * @brief  Gets the LCD text font.
  * @retval Used layer font
  */
sFONT *BSP_LCD_GetFont(void)
{
  return DrawProp[ActiveLayer].pFont;
}

/**
  * @brief  Reads an LCD pixel.
  * @param  Xpos: X position 
  * @param  Ypos: Y position 
  * @retval RGB pixel color
  */
uint32_t BSP_LCD_ReadPixel(uint16_t Xpos, uint16_t Ypos)
{
  uint32_t ret = 0;
  
  if(hLtdcHandler.LayerCfg[ActiveLayer].PixelFormat == LTDC_PIXEL_FORMAT_ARGB8888)
  {
    /* Read data value from SDRAM memory */
    ret = *(__IO uint32_t*) (hLtdcHandler.LayerCfg[ActiveLayer].FBStartAdress + (4*(Ypos*BSP_LCD_GetXSize() + Xpos)));
  }
  else if(hLtdcHandler.LayerCfg[ActiveLayer].PixelFormat == LTDC_PIXEL_FORMAT_RGB888)
  {
    /* Read data value from SDRAM memory */
    ret = (*(__IO uint32_t*) (hLtdcHandler.LayerCfg[ActiveLayer].FBStartAdress + (4*(Ypos*BSP_LCD_GetXSize() + Xpos))) & 0x00FFFFFF);
  }
  else if((hLtdcHandler.LayerCfg[ActiveLayer].PixelFormat == LTDC_PIXEL_FORMAT_RGB565) || \
          (hLtdcHandler.LayerCfg[ActiveLayer].PixelFormat == LTDC_PIXEL_FORMAT_ARGB4444) || \
          (hLtdcHandler.LayerCfg[ActiveLayer].PixelFormat == LTDC_PIXEL_FORMAT_AL88))  
  {
    /* Read data value from SDRAM memory */
    ret = *(__IO uint16_t*) (hLtdcHandler.LayerCfg[ActiveLayer].FBStartAdress + (2*(Ypos*BSP_LCD_GetXSize() + Xpos)));    
  }
  else
  {
    /* Read data value from SDRAM memory */
    ret = *(__IO uint8_t*) (hLtdcHandler.LayerCfg[ActiveLayer].FBStartAdress + (2*(Ypos*BSP_LCD_GetXSize() + Xpos)));    
  }
  
  return ret;
}

/**
  * @brief  Clears the hole LCD.
  * @param  Color: Color of the background
  * @retval None
  */
void BSP_LCD_Clear(uint32_t Color)
{ 
  /* Clear the LCD */ 
  LL_FillBuffer(ActiveLayer, (uint32_t *)(hLtdcHandler.LayerCfg[ActiveLayer].FBStartAdress), BSP_LCD_GetXSize(), BSP_LCD_GetYSize(), 0, Color);
}

/**
  * @brief  Clears the selected line.
  * @param  Line: Line to be cleared
  * @retval None
  */
void BSP_LCD_ClearStringLine(uint32_t Line)
{
  uint32_t color_backup = DrawProp[ActiveLayer].TextColor;
  DrawProp[ActiveLayer].TextColor = DrawProp[ActiveLayer].BackColor;
  
  /* Draw rectangle with background color */
  BSP_LCD_FillRect(0, (Line * DrawProp[ActiveLayer].pFont->Height), BSP_LCD_GetXSize(), DrawProp[ActiveLayer].pFont->Height);
  
  DrawProp[ActiveLayer].TextColor = color_backup;
  BSP_LCD_SetTextColor(DrawProp[ActiveLayer].TextColor);  
}

/**
  * @brief  Displays one character.
  * @param  Xpos: Start column address
  * @param  Ypos: Line where to display the character shape.
  * @param  Ascii: Character ascii code
  *           This parameter must be a number between Min_Data = 0x20 and Max_Data = 0x7E 
  * @retval None
  */
void BSP_LCD_DisplayChar(uint16_t Xpos, uint16_t Ypos, uint8_t Ascii)
{
  DrawChar(Xpos, Ypos, &DrawProp[ActiveLayer].pFont->table[(Ascii-' ') *\
    DrawProp[ActiveLayer].pFont->Height * ((DrawProp[ActiveLayer].pFont->Width + 7) / 8)]);
}

/**
  * @brief  Displays characters on the LCD.
  * @param  Xpos: X position (in pixel)
  * @param  Ypos: Y position (in pixel)   
  * @param  Text: Pointer to string to display on LCD
  * @param  Mode: Display mode
  *          This parameter can be one of the following values:
  *            @arg  CENTER_MODE
  *            @arg  RIGHT_MODE
  *            @arg  LEFT_MODE   
  * @retval None
  */
void BSP_LCD_DisplayStringAt(uint16_t Xpos, uint16_t Ypos, uint8_t *Text, Text_AlignModeTypdef Mode)
{
  uint16_t ref_column = 1, i = 0;
  uint32_t size = 0, xsize = 0; 
  uint8_t  *ptr = Text;
  
  /* Get the text size */
  while (*ptr++) size ++ ;
  
  /* Characters number per line */
  xsize = (BSP_LCD_GetXSize()/DrawProp[ActiveLayer].pFont->Width);
  
  switch (Mode)
  {
  case CENTER_MODE:
    {
      ref_column = Xpos + ((xsize - size)* DrawProp[ActiveLayer].pFont->Width) / 2;
      break;
    }
  case LEFT_MODE:
    {
      ref_column = Xpos;
      break;
    }
  case RIGHT_MODE:
    {
      ref_column = - Xpos + ((xsize - size)*DrawProp[ActiveLayer].pFont->Width);
      break;
    }    
  default:
    {
      ref_column = Xpos;
      break;
    }
  }
  
  /* Check that the Start column is located in the screen */
  if ((ref_column < 1) || (ref_column >= 0x8000))
  {
    ref_column = 1;
  }

  /* Send the string character by character on LCD */
  while ((*Text != 0) & (((BSP_LCD_GetXSize() - (i*DrawProp[ActiveLayer].pFont->Width)) & 0xFFFF) >= DrawProp[ActiveLayer].pFont->Width))
  {
    /* Display one character on LCD */
    BSP_LCD_DisplayChar(ref_column, Ypos, *Text);
    /* Decrement the column position by 16 */
    ref_column += DrawProp[ActiveLayer].pFont->Width;
    /* Point on the next character */
    Text++;
    i++;
  }  
}

/**
  * @brief  Displays a maximum of 60 characters on the LCD.
  * @param  Line: Line where to display the character shape
  * @param  ptr: Pointer to string to display on LCD
  * @retval None
  */
void BSP_LCD_DisplayStringAtLine(uint16_t Line, uint8_t *ptr)
{  
  BSP_LCD_DisplayStringAt(0, LINE(Line), ptr, LEFT_MODE);
}

/**
  * @brief  Draws an horizontal line.
  * @param  Xpos: X position
  * @param  Ypos: Y position
  * @param  Length: Line length
  * @retval None
  */
void BSP_LCD_DrawHLine(uint16_t Xpos, uint16_t Ypos, uint16_t Length)
{
  uint32_t  Xaddress = 0;
  
  /* Get the line address */
  if(hLtdcHandler.LayerCfg[ActiveLayer].PixelFormat == LTDC_PIXEL_FORMAT_RGB565)
  { /* RGB565 format */
    Xaddress = (hLtdcHandler.LayerCfg[ActiveLayer].FBStartAdress) + 2*(BSP_LCD_GetXSize()*Ypos + Xpos);
  }
  else
  { /* ARGB8888 format */
    Xaddress = (hLtdcHandler.LayerCfg[ActiveLayer].FBStartAdress) + 4*(BSP_LCD_GetXSize()*Ypos + Xpos);
  }
  
  /* Write line */
  LL_FillBuffer(ActiveLayer, (uint32_t *)Xaddress, Length, 1, 0, DrawProp[ActiveLayer].TextColor);
}

/**
  * @brief  Draws a vertical line.
  * @param  Xpos: X position
  * @param  Ypos: Y position
  * @param  Length: Line length
  * @retval None
  */
void BSP_LCD_DrawVLine(uint16_t Xpos, uint16_t Ypos, uint16_t Length)
{
  uint32_t  Xaddress = 0;
  
  /* Get the line address */
  if(hLtdcHandler.LayerCfg[ActiveLayer].PixelFormat == LTDC_PIXEL_FORMAT_RGB565)
  { /* RGB565 format */
    Xaddress = (hLtdcHandler.LayerCfg[ActiveLayer].FBStartAdress) + 2*(BSP_LCD_GetXSize()*Ypos + Xpos);
  }
  else
  { /* ARGB8888 format */
    Xaddress = (hLtdcHandler.LayerCfg[ActiveLayer].FBStartAdress) + 4*(BSP_LCD_GetXSize()*Ypos + Xpos);
  }
  
  /* Write line */
  LL_FillBuffer(ActiveLayer, (uint32_t *)Xaddress, 1, Length, (BSP_LCD_GetXSize() - 1), DrawProp[ActiveLayer].TextColor);
}

/**
  * @brief  Draws an uni-line (between two points).
  * @param  x1: Point 1 X position
  * @param  y1: Point 1 Y position
  * @param  x2: Point 2 X position
  * @param  y2: Point 2 Y position
  * @retval None
  */
void BSP_LCD_DrawLine(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2)
{
  int16_t deltax = 0, deltay = 0, x = 0, y = 0, xinc1 = 0, xinc2 = 0, 
  yinc1 = 0, yinc2 = 0, den = 0, num = 0, num_add = 0, num_pixels = 0, 
  curpixel = 0;
  
  deltax = ABS(x2 - x1);        /* The difference between the x's */
  deltay = ABS(y2 - y1);        /* The difference between the y's */
  x = x1;                       /* Start x off at the first pixel */
  y = y1;                       /* Start y off at the first pixel */
  
  if (x2 >= x1)                 /* The x-values are increasing */
  {
    xinc1 = 1;
    xinc2 = 1;
  }
  else                          /* The x-values are decreasing */
  {
    xinc1 = -1;
    xinc2 = -1;
  }
  
  if (y2 >= y1)                 /* The y-values are increasing */
  {
    yinc1 = 1;
    yinc2 = 1;
  }
  else                          /* The y-values are decreasing */
  {
    yinc1 = -1;
    yinc2 = -1;
  }
  
  if (deltax >= deltay)         /* There is at least one x-value for every y-value */
  {
    xinc1 = 0;                  /* Don't change the x when numerator >= denominator */
    yinc2 = 0;                  /* Don't change the y for every iteration */
    den = deltax;
    num = deltax / 2;
    num_add = deltay;
    num_pixels = deltax;         /* There are more x-values than y-values */
  }
  else                          /* There is at least one y-value for every x-value */
  {
    xinc2 = 0;                  /* Don't change the x for every iteration */
    yinc1 = 0;                  /* Don't change the y when numerator >= denominator */
    den = deltay;
    num = deltay / 2;
    num_add = deltax;
    num_pixels = deltay;         /* There are more y-values than x-values */
  }
  
  for (curpixel = 0; curpixel <= num_pixels; curpixel++)
  {
    BSP_LCD_DrawPixel(x, y, DrawProp[ActiveLayer].TextColor);   /* Draw the current pixel */
    num += num_add;                            /* Increase the numerator by the top of the fraction */
    if (num >= den)                           /* Check if numerator >= denominator */
    {
      num -= den;                             /* Calculate the new numerator value */
      x += xinc1;                             /* Change the x as appropriate */
      y += yinc1;                             /* Change the y as appropriate */
    }
    x += xinc2;                               /* Change the x as appropriate */
    y += yinc2;                               /* Change the y as appropriate */
  }
}

/**
  * @brief  Draws a rectangle.
  * @param  Xpos: X position
  * @param  Ypos: Y position
  * @param  Width: Rectangle width  
  * @param  Height: Rectangle height
  * @retval None
  */
void BSP_LCD_DrawRect(uint16_t Xpos, uint16_t Ypos, uint16_t Width, uint16_t Height)
{
  /* Draw horizontal lines */
  BSP_LCD_DrawHLine(Xpos, Ypos, Width);
  BSP_LCD_DrawHLine(Xpos, (Ypos+ Height), Width);
  
  /* Draw vertical lines */
  BSP_LCD_DrawVLine(Xpos, Ypos, Height);
  BSP_LCD_DrawVLine((Xpos + Width), Ypos, Height);
}

/**
  * @brief  Draws a circle.
  * @param  Xpos: X position
  * @param  Ypos: Y position
  * @param  Radius: Circle radius
  * @retval None
  */
void BSP_LCD_DrawCircle(uint16_t Xpos, uint16_t Ypos, uint16_t Radius)
{
  int32_t   decision;    /* Decision Variable */ 
  uint32_t  current_x;   /* Current X Value */
  uint32_t  current_y;   /* Current Y Value */
  
  decision = 3 - (Radius << 1);
  current_x = 0;
  current_y = Radius;
  
  while (current_x <= current_y)
  {
    BSP_LCD_DrawPixel((Xpos + current_x), (Ypos - current_y), DrawProp[ActiveLayer].TextColor);
    
    BSP_LCD_DrawPixel((Xpos - current_x), (Ypos - current_y), DrawProp[ActiveLayer].TextColor);
    
    BSP_LCD_DrawPixel((Xpos + current_y), (Ypos - current_x), DrawProp[ActiveLayer].TextColor);
    
    BSP_LCD_DrawPixel((Xpos - current_y), (Ypos - current_x), DrawProp[ActiveLayer].TextColor);
    
    BSP_LCD_DrawPixel((Xpos + current_x), (Ypos + current_y), DrawProp[ActiveLayer].TextColor);
    
    BSP_LCD_DrawPixel((Xpos - current_x), (Ypos + current_y), DrawProp[ActiveLayer].TextColor);
    
    BSP_LCD_DrawPixel((Xpos + current_y), (Ypos + current_x), DrawProp[ActiveLayer].TextColor);
    
    BSP_LCD_DrawPixel((Xpos - current_y), (Ypos + current_x), DrawProp[ActiveLayer].TextColor);
    
    if (decision < 0)
    { 
      decision += (current_x << 2) + 6;
    }
    else
    {
      decision += ((current_x - current_y) << 2) + 10;
      current_y--;
    }
    current_x++;
  } 
}

/**
  * @brief  Draws an poly-line (between many points).
  * @param  Points: Pointer to the points array
  * @param  PointCount: Number of points
  * @retval None
  */
void BSP_LCD_DrawPolygon(pPoint Points, uint16_t PointCount)
{
  int16_t x = 0, y = 0;
  
  if(PointCount < 2)
  {
    return;
  }
  
  BSP_LCD_DrawLine(Points->X, Points->Y, (Points+PointCount-1)->X, (Points+PointCount-1)->Y);
  
  while(--PointCount)
  {
    x = Points->X;
    y = Points->Y;
    Points++;
    BSP_LCD_DrawLine(x, y, Points->X, Points->Y);
  }
}

/**
  * @brief  Draws an ellipse on LCD.
  * @param  Xpos: X position
  * @param  Ypos: Y position
  * @param  XRadius: Ellipse X radius
  * @param  YRadius: Ellipse Y radius
  * @retval None
  */
void BSP_LCD_DrawEllipse(int Xpos, int Ypos, int XRadius, int YRadius)
{
  int x = 0, y = -YRadius, err = 2-2*XRadius, e2;
  float k = 0, rad1 = 0, rad2 = 0;
  
  rad1 = XRadius;
  rad2 = YRadius;
  
  k = (float)(rad2/rad1);  
  
  do { 
    BSP_LCD_DrawPixel((Xpos-(uint16_t)(x/k)), (Ypos+y), DrawProp[ActiveLayer].TextColor);
    BSP_LCD_DrawPixel((Xpos+(uint16_t)(x/k)), (Ypos+y), DrawProp[ActiveLayer].TextColor);
    BSP_LCD_DrawPixel((Xpos+(uint16_t)(x/k)), (Ypos-y), DrawProp[ActiveLayer].TextColor);
    BSP_LCD_DrawPixel((Xpos-(uint16_t)(x/k)), (Ypos-y), DrawProp[ActiveLayer].TextColor);      
    
    e2 = err;
    if (e2 <= x) {
      err += ++x*2+1;
      if (-y == x && e2 <= y) e2 = 0;
    }
    if (e2 > y) err += ++y*2+1;     
  }
  while (y <= 0);
}

/**
  * @brief  Draws a pixel on LCD.
  * @param  Xpos: X position
  * @param  Ypos: Y position
  * @param  RGB_Code: Pixel color in ARGB mode (8-8-8-8)
  * @retval None
  */
void BSP_LCD_DrawPixel(uint16_t Xpos, uint16_t Ypos, uint32_t RGB_Code)
{
  /* Write data value to all SDRAM memory */
  if(hLtdcHandler.LayerCfg[ActiveLayer].PixelFormat == LTDC_PIXEL_FORMAT_RGB565)
  { /* RGB565 format */
    *(__IO uint16_t*) (hLtdcHandler.LayerCfg[ActiveLayer].FBStartAdress + (2*(Ypos*BSP_LCD_GetXSize() + Xpos))) = (uint16_t)RGB_Code;
  }
  else
  { /* ARGB8888 format */
    *(__IO uint32_t*) (hLtdcHandler.LayerCfg[ActiveLayer].FBStartAdress + (4*(Ypos*BSP_LCD_GetXSize() + Xpos))) = RGB_Code;
  }
}

/**
  * @brief  Draws a bitmap picture loaded in the internal Flash in ARGB888 format (32 bits per pixel).
  * @param  Xpos: Bmp X position in the LCD
  * @param  Ypos: Bmp Y position in the LCD
  * @param  pbmp: Pointer to Bmp picture address in the internal Flash
  * @retval None
  */
void BSP_LCD_DrawBitmap(uint32_t Xpos, uint32_t Ypos, uint8_t *pbmp)
{
  uint32_t index = 0, width = 0, height = 0, bit_pixel = 0;
  uint32_t address;
  uint32_t input_color_mode = 0;
  
  /* Get bitmap data address offset */
  index = pbmp[10] + (pbmp[11] << 8) + (pbmp[12] << 16)  + (pbmp[13] << 24);

  /* Read bitmap width */
  width = pbmp[18] + (pbmp[19] << 8) + (pbmp[20] << 16)  + (pbmp[21] << 24);

  /* Read bitmap height */
  height = pbmp[22] + (pbmp[23] << 8) + (pbmp[24] << 16)  + (pbmp[25] << 24);

  /* Read bit/pixel */
  bit_pixel = pbmp[28] + (pbmp[29] << 8);  
  
  /* Set the address */
  address = hLtdcHandler.LayerCfg[ActiveLayer].FBStartAdress + (((BSP_LCD_GetXSize()*Ypos) + Xpos)*(4));
  
  /* Get the layer pixel format */    
  if ((bit_pixel/8) == 4)
  {
    input_color_mode = CM_ARGB8888;
  }
  else if ((bit_pixel/8) == 2)
  {
    input_color_mode = CM_RGB565;   
  }
  else 
  {
    input_color_mode = CM_RGB888;
  }
  
  /* Bypass the bitmap header */
  pbmp += (index + (width * (height - 1) * (bit_pixel/8)));  
  
  /* Convert picture to ARGB8888 pixel format */
  for(index=0; index < height; index++)
  {
    /* Pixel format conversion */
    LL_ConvertLineToARGB8888((uint32_t *)pbmp, (uint32_t *)address, width, input_color_mode);
    
    /* Increment the source and destination buffers */
    address+=  (BSP_LCD_GetXSize()*4);
    pbmp -= width*(bit_pixel/8);
  } 
}

/**
  * @brief  Draws a full rectangle.
  * @param  Xpos: X position
  * @param  Ypos: Y position
  * @param  Width: Rectangle width  
  * @param  Height: Rectangle height
  * @retval None
  */
void BSP_LCD_FillRect(uint16_t Xpos, uint16_t Ypos, uint16_t Width, uint16_t Height)
{
  uint32_t  x_address = 0;
  
  /* Set the text color */
  BSP_LCD_SetTextColor(DrawProp[ActiveLayer].TextColor);
  
  /* Get the rectangle start address */
  if(hLtdcHandler.LayerCfg[ActiveLayer].PixelFormat == LTDC_PIXEL_FORMAT_RGB565)
  { /* RGB565 format */
    x_address = (hLtdcHandler.LayerCfg[ActiveLayer].FBStartAdress) + 2*(BSP_LCD_GetXSize()*Ypos + Xpos);
  }
  else
  { /* ARGB8888 format */
    x_address = (hLtdcHandler.LayerCfg[ActiveLayer].FBStartAdress) + 4*(BSP_LCD_GetXSize()*Ypos + Xpos);
  }
  /* Fill the rectangle */
  LL_FillBuffer(ActiveLayer, (uint32_t *)x_address, Width, Height, (BSP_LCD_GetXSize() - Width), DrawProp[ActiveLayer].TextColor);
}

/**
  * @brief  Draws a full circle.
  * @param  Xpos: X position
  * @param  Ypos: Y position
  * @param  Radius: Circle radius
  * @retval None
  */
void BSP_LCD_FillCircle(uint16_t Xpos, uint16_t Ypos, uint16_t Radius)
{
  int32_t  decision;     /* Decision Variable */ 
  uint32_t  current_x;   /* Current X Value */
  uint32_t  current_y;   /* Current Y Value */
  
  decision = 3 - (Radius << 1);
  
  current_x = 0;
  current_y = Radius;
  
  BSP_LCD_SetTextColor(DrawProp[ActiveLayer].TextColor);
  
  while (current_x <= current_y)
  {
    if(current_y > 0) 
    {
      BSP_LCD_DrawHLine(Xpos - current_y, Ypos + current_x, 2*current_y);
      BSP_LCD_DrawHLine(Xpos - current_y, Ypos - current_x, 2*current_y);
    }
    
    if(current_x > 0) 
    {
      BSP_LCD_DrawHLine(Xpos - current_x, Ypos - current_y, 2*current_x);
      BSP_LCD_DrawHLine(Xpos - current_x, Ypos + current_y, 2*current_x);
    }
    if (decision < 0)
    { 
      decision += (current_x << 2) + 6;
    }
    else
    {
      decision += ((current_x - current_y) << 2) + 10;
      current_y--;
    }
    current_x++;
  }
  
  BSP_LCD_SetTextColor(DrawProp[ActiveLayer].TextColor);
  BSP_LCD_DrawCircle(Xpos, Ypos, Radius);
}

/**
  * @brief  Draws a full poly-line (between many points).
  * @param  Points: Pointer to the points array
  * @param  PointCount: Number of points
  * @retval None
  */
void BSP_LCD_FillPolygon(pPoint Points, uint16_t PointCount)
{
  int16_t X = 0, Y = 0, X2 = 0, Y2 = 0, X_center = 0, Y_center = 0, X_first = 0, Y_first = 0, pixelX = 0, pixelY = 0, counter = 0;
  uint16_t  image_left = 0, image_right = 0, image_top = 0, image_bottom = 0;
  
  image_left = image_right = Points->X;
  image_top= image_bottom = Points->Y;
  
  for(counter = 1; counter < PointCount; counter++)
  {
    pixelX = POLY_X(counter);
    if(pixelX < image_left)
    {
      image_left = pixelX;
    }
    if(pixelX > image_right)
    {
      image_right = pixelX;
    }
    
    pixelY = POLY_Y(counter);
    if(pixelY < image_top)
    { 
      image_top = pixelY;
    }
    if(pixelY > image_bottom)
    {
      image_bottom = pixelY;
    }
  }  
  
  if(PointCount < 2)
  {
    return;
  }
  
  X_center = (image_left + image_right)/2;
  Y_center = (image_bottom + image_top)/2;
  
  X_first = Points->X;
  Y_first = Points->Y;
  
  while(--PointCount)
  {
    X = Points->X;
    Y = Points->Y;
    Points++;
    X2 = Points->X;
    Y2 = Points->Y;    
    
    FillTriangle(X, X2, X_center, Y, Y2, Y_center);
    FillTriangle(X, X_center, X2, Y, Y_center, Y2);
    FillTriangle(X_center, X2, X, Y_center, Y2, Y);   
  }
  
  FillTriangle(X_first, X2, X_center, Y_first, Y2, Y_center);
  FillTriangle(X_first, X_center, X2, Y_first, Y_center, Y2);
  FillTriangle(X_center, X2, X_first, Y_center, Y2, Y_first);   
}

/**
  * @brief  Draws a full ellipse.
  * @param  Xpos: X position
  * @param  Ypos: Y position
  * @param  XRadius: Ellipse X radius
  * @param  YRadius: Ellipse Y radius  
  * @retval None
  */
void BSP_LCD_FillEllipse(int Xpos, int Ypos, int XRadius, int YRadius)
{
  int x = 0, y = -YRadius, err = 2-2*XRadius, e2;
  float k = 0, rad1 = 0, rad2 = 0;
  
  rad1 = XRadius;
  rad2 = YRadius;
  
  k = (float)(rad2/rad1);
  
  do 
  {       
    BSP_LCD_DrawHLine((Xpos-(uint16_t)(x/k)), (Ypos+y), (2*(uint16_t)(x/k) + 1));
    BSP_LCD_DrawHLine((Xpos-(uint16_t)(x/k)), (Ypos-y), (2*(uint16_t)(x/k) + 1));
    
    e2 = err;
    if (e2 <= x) 
    {
      err += ++x*2+1;
      if (-y == x && e2 <= y) e2 = 0;
    }
    if (e2 > y) err += ++y*2+1;
  }
  while (y <= 0);
}

/**
  * @brief  Enables the display.
  * @retval None
  */
void BSP_LCD_DisplayOn(void)
{
  /* Display On */
  __HAL_LTDC_ENABLE(&hLtdcHandler);
  HAL_GPIO_WritePin(LCD_DISP_GPIO_PORT, LCD_DISP_PIN, GPIO_PIN_SET);        /* Assert LCD_DISP pin */
  HAL_GPIO_WritePin(LCD_BL_CTRL_GPIO_PORT, LCD_BL_CTRL_PIN, GPIO_PIN_SET);  /* Assert LCD_BL_CTRL pin */
}

/**
  * @brief  Disables the display.
  * @retval None
  */
void BSP_LCD_DisplayOff(void)
{
  /* Display Off */
  __HAL_LTDC_DISABLE(&hLtdcHandler);
  HAL_GPIO_WritePin(LCD_DISP_GPIO_PORT, LCD_DISP_PIN, GPIO_PIN_RESET);      /* De-assert LCD_DISP pin */
  HAL_GPIO_WritePin(LCD_BL_CTRL_GPIO_PORT, LCD_BL_CTRL_PIN, GPIO_PIN_RESET);/* De-assert LCD_BL_CTRL pin */
}

/**
  * @brief  Initializes the LTDC MSP.
  * @param  hltdc: LTDC handle
  * @param  Params
  * @retval None
  */
__weak void BSP_LCD_MspInit(LTDC_HandleTypeDef *hltdc, void *Params)
{
  GPIO_InitTypeDef gpio_init_structure;
  
  /* Enable the LTDC and DMA2D clocks */
  __HAL_RCC_LTDC_CLK_ENABLE();
  __HAL_RCC_DMA2D_CLK_ENABLE();
  
  /* Enable GPIOs clock */
  __HAL_RCC_GPIOE_CLK_ENABLE();
  __HAL_RCC_GPIOG_CLK_ENABLE();
  __HAL_RCC_GPIOI_CLK_ENABLE();
  __HAL_RCC_GPIOJ_CLK_ENABLE();
  __HAL_RCC_GPIOK_CLK_ENABLE();
  LCD_DISP_GPIO_CLK_ENABLE();
  LCD_BL_CTRL_GPIO_CLK_ENABLE();

  /*** LTDC Pins configuration ***/
  /* GPIOE configuration */
  gpio_init_structure.Pin       = GPIO_PIN_4;
  gpio_init_structure.Mode      = GPIO_MODE_AF_PP;
  gpio_init_structure.Pull      = GPIO_NOPULL;
  gpio_init_structure.Speed     = GPIO_SPEED_FAST;
  gpio_init_structure.Alternate = GPIO_AF14_LTDC;  
  HAL_GPIO_Init(GPIOE, &gpio_init_structure);

  /* GPIOG configuration */
  gpio_init_structure.Pin       = GPIO_PIN_12;
  gpio_init_structure.Mode      = GPIO_MODE_AF_PP;
  gpio_init_structure.Alternate = GPIO_AF9_LTDC;
  HAL_GPIO_Init(GPIOG, &gpio_init_structure);

  /* GPIOI LTDC alternate configuration */
  gpio_init_structure.Pin       = GPIO_PIN_9 | GPIO_PIN_10 | \
                                  GPIO_PIN_13 | GPIO_PIN_14 | GPIO_PIN_15;
  gpio_init_structure.Mode      = GPIO_MODE_AF_PP;
  gpio_init_structure.Alternate = GPIO_AF14_LTDC;
  HAL_GPIO_Init(GPIOI, &gpio_init_structure);

  /* GPIOJ configuration */  
  gpio_init_structure.Pin       = GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_2 | GPIO_PIN_3 | \
                                  GPIO_PIN_4 | GPIO_PIN_5 | GPIO_PIN_6 | GPIO_PIN_7 | \
                                  GPIO_PIN_8 | GPIO_PIN_9 | GPIO_PIN_10 | GPIO_PIN_11 | \
                                  GPIO_PIN_13 | GPIO_PIN_14 | GPIO_PIN_15;
  gpio_init_structure.Mode      = GPIO_MODE_AF_PP;
  gpio_init_structure.Alternate = GPIO_AF14_LTDC;
  HAL_GPIO_Init(GPIOJ, &gpio_init_structure);  

  /* GPIOK configuration */  
  gpio_init_structure.Pin       = GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_2 | GPIO_PIN_4 | \
                                  GPIO_PIN_5 | GPIO_PIN_6 | GPIO_PIN_7;
  gpio_init_structure.Mode      = GPIO_MODE_AF_PP;
  gpio_init_structure.Alternate = GPIO_AF14_LTDC;
  HAL_GPIO_Init(GPIOK, &gpio_init_structure);

  /* LCD_DISP GPIO configuration */
  gpio_init_structure.Pin       = LCD_DISP_PIN;     /* LCD_DISP pin has to be manually controlled */
  gpio_init_structure.Mode      = GPIO_MODE_OUTPUT_PP;
  HAL_GPIO_Init(LCD_DISP_GPIO_PORT, &gpio_init_structure);

  /* LCD_BL_CTRL GPIO configuration */
  gpio_init_structure.Pin       = LCD_BL_CTRL_PIN;  /* LCD_BL_CTRL pin has to be manually controlled */
  gpio_init_structure.Mode      = GPIO_MODE_OUTPUT_PP;
  HAL_GPIO_Init(LCD_BL_CTRL_GPIO_PORT, &gpio_init_structure);
}

/**
  * @brief  DeInitializes BSP_LCD MSP.
  * @param  hltdc: LTDC handle
  * @param  Params
  * @retval None
  */
__weak void BSP_LCD_MspDeInit(LTDC_HandleTypeDef *hltdc, void *Params)
{
  GPIO_InitTypeDef  gpio_init_structure;

  /* Disable LTDC block */
  __HAL_LTDC_DISABLE(hltdc);

  /* LTDC Pins deactivation */

  /* GPIOE deactivation */
  gpio_init_structure.Pin       = GPIO_PIN_4;
  HAL_GPIO_DeInit(GPIOE, gpio_init_structure.Pin);

  /* GPIOG deactivation */
  gpio_init_structure.Pin       = GPIO_PIN_12;
  HAL_GPIO_DeInit(GPIOG, gpio_init_structure.Pin);

  /* GPIOI deactivation */
  gpio_init_structure.Pin       = GPIO_PIN_8 | GPIO_PIN_9 | GPIO_PIN_10 | GPIO_PIN_12 | \
                                  GPIO_PIN_13 | GPIO_PIN_14 | GPIO_PIN_15;
  HAL_GPIO_DeInit(GPIOI, gpio_init_structure.Pin);

  /* GPIOJ deactivation */
  gpio_init_structure.Pin       = GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_2 | GPIO_PIN_3 | \
                                  GPIO_PIN_4 | GPIO_PIN_5 | GPIO_PIN_6 | GPIO_PIN_7 | \
                                  GPIO_PIN_8 | GPIO_PIN_9 | GPIO_PIN_10 | GPIO_PIN_11 | \
                                  GPIO_PIN_13 | GPIO_PIN_14 | GPIO_PIN_15;
  HAL_GPIO_DeInit(GPIOJ, gpio_init_structure.Pin);

  /* GPIOK deactivation */
  gpio_init_structure.Pin       = GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_2 | GPIO_PIN_4 | \
                                  GPIO_PIN_5 | GPIO_PIN_6 | GPIO_PIN_7;
  HAL_GPIO_DeInit(GPIOK, gpio_init_structure.Pin);

  /* Disable LTDC clock */
  __HAL_RCC_LTDC_CLK_DISABLE();

  /* GPIO pins clock can be shut down in the application
     by surcharging this __weak function */
}

/**
  * @brief  Clock Config.
  * @param  hltdc: LTDC handle
  * @param  Params
  * @note   This API is called by BSP_LCD_Init()
  *         Being __weak it can be overwritten by the application
  * @retval None
  */
__weak void BSP_LCD_ClockConfig(LTDC_HandleTypeDef *hltdc, void *Params)
{
  static RCC_PeriphCLKInitTypeDef  periph_clk_init_struct;

  /* RK043FN48H LCD clock configuration */
  /* PLLSAI_VCO Input = HSE_VALUE/PLL_M = 1 Mhz */
  /* PLLSAI_VCO Output = PLLSAI_VCO Input * PLLSAIN = 192 Mhz */
  /* PLLLCDCLK = PLLSAI_VCO Output/PLLSAIR = 192/5 = 38.4 Mhz */
  /* LTDC clock frequency = PLLLCDCLK / LTDC_PLLSAI_DIVR_4 = 38.4/4 = 9.6Mhz */
  periph_clk_init_struct.PeriphClockSelection = RCC_PERIPHCLK_LTDC;
  periph_clk_init_struct.PLLSAI.PLLSAIN = 192;
  periph_clk_init_struct.PLLSAI.PLLSAIR = RK043FN48H_FREQUENCY_DIVIDER;
  periph_clk_init_struct.PLLSAIDivR = RCC_PLLSAIDIVR_4;
  HAL_RCCEx_PeriphCLKConfig(&periph_clk_init_struct);
}


/*******************************************************************************
                            Static Functions
*******************************************************************************/

/**
  * @brief  Draws a character on LCD.
  * @param  Xpos: Line where to display the character shape
  * @param  Ypos: Start column address
  * @param  c: Pointer to the character data
  * @retval None
  */
static void DrawChar(uint16_t Xpos, uint16_t Ypos, const uint8_t *c)
{
  uint32_t i = 0, j = 0;
  uint16_t height, width;
  uint8_t  offset;
  uint8_t  *pchar;
  uint32_t line;
  
  height = DrawProp[ActiveLayer].pFont->Height;
  width  = DrawProp[ActiveLayer].pFont->Width;
  
  offset =  8 *((width + 7)/8) -  width ;
  
  for(i = 0; i < height; i++)
  {
    pchar = ((uint8_t *)c + (width + 7)/8 * i);
    
    switch(((width + 7)/8))
    {
      
    case 1:
      line =  pchar[0];      
      break;
      
    case 2:
      line =  (pchar[0]<< 8) | pchar[1];      
      break;
      
    case 3:
    default:
      line =  (pchar[0]<< 16) | (pchar[1]<< 8) | pchar[2];      
      break;
    } 
    
    for (j = 0; j < width; j++)
    {
      if(line & (1 << (width- j + offset- 1))) 
      {
        BSP_LCD_DrawPixel((Xpos + j), Ypos, DrawProp[ActiveLayer].TextColor);
      }
      else
      {
        BSP_LCD_DrawPixel((Xpos + j), Ypos, DrawProp[ActiveLayer].BackColor);
      } 
    }
    Ypos++;
  }
}

/**
  * @brief  Fills a triangle (between 3 points).
  * @param  x1: Point 1 X position
  * @param  y1: Point 1 Y position
  * @param  x2: Point 2 X position
  * @param  y2: Point 2 Y position
  * @param  x3: Point 3 X position
  * @param  y3: Point 3 Y position
  * @retval None
  */
static void FillTriangle(uint16_t x1, uint16_t x2, uint16_t x3, uint16_t y1, uint16_t y2, uint16_t y3)
{ 
  int16_t deltax = 0, deltay = 0, x = 0, y = 0, xinc1 = 0, xinc2 = 0, 
  yinc1 = 0, yinc2 = 0, den = 0, num = 0, num_add = 0, num_pixels = 0,
  curpixel = 0;
  
  deltax = ABS(x2 - x1);        /* The difference between the x's */
  deltay = ABS(y2 - y1);        /* The difference between the y's */
  x = x1;                       /* Start x off at the first pixel */
  y = y1;                       /* Start y off at the first pixel */
  
  if (x2 >= x1)                 /* The x-values are increasing */
  {
    xinc1 = 1;
    xinc2 = 1;
  }
  else                          /* The x-values are decreasing */
  {
    xinc1 = -1;
    xinc2 = -1;
  }
  
  if (y2 >= y1)                 /* The y-values are increasing */
  {
    yinc1 = 1;
    yinc2 = 1;
  }
  else                          /* The y-values are decreasing */
  {
    yinc1 = -1;
    yinc2 = -1;
  }
  
  if (deltax >= deltay)         /* There is at least one x-value for every y-value */
  {
    xinc1 = 0;                  /* Don't change the x when numerator >= denominator */
    yinc2 = 0;                  /* Don't change the y for every iteration */
    den = deltax;
    num = deltax / 2;
    num_add = deltay;
    num_pixels = deltax;         /* There are more x-values than y-values */
  }
  else                          /* There is at least one y-value for every x-value */
  {
    xinc2 = 0;                  /* Don't change the x for every iteration */
    yinc1 = 0;                  /* Don't change the y when numerator >= denominator */
    den = deltay;
    num = deltay / 2;
    num_add = deltax;
    num_pixels = deltay;         /* There are more y-values than x-values */
  }
  
  for (curpixel = 0; curpixel <= num_pixels; curpixel++)
  {
    BSP_LCD_DrawLine(x, y, x3, y3);
    
    num += num_add;              /* Increase the numerator by the top of the fraction */
    if (num >= den)             /* Check if numerator >= denominator */
    {
      num -= den;               /* Calculate the new numerator value */
      x += xinc1;               /* Change the x as appropriate */
      y += yinc1;               /* Change the y as appropriate */
    }
    x += xinc2;                 /* Change the x as appropriate */
    y += yinc2;                 /* Change the y as appropriate */
  } 
}

/**
  * @brief  Fills a buffer.
  * @param  LayerIndex: Layer index
  * @param  pDst: Pointer to destination buffer
  * @param  xSize: Buffer width
  * @param  ySize: Buffer height
  * @param  OffLine: Offset
  * @param  ColorIndex: Color index
  * @retval None
  */
static void LL_FillBuffer(uint32_t LayerIndex, void *pDst, uint32_t xSize, uint32_t ySize, uint32_t OffLine, uint32_t ColorIndex) 
{
  /* Register to memory mode with ARGB8888 as color Mode */ 
  hDma2dHandler.Init.Mode         = DMA2D_R2M;
  if(hLtdcHandler.LayerCfg[ActiveLayer].PixelFormat == LTDC_PIXEL_FORMAT_RGB565)
  { /* RGB565 format */ 
    hDma2dHandler.Init.ColorMode    = DMA2D_RGB565;
  }
  else
  { /* ARGB8888 format */
    hDma2dHandler.Init.ColorMode    = DMA2D_ARGB8888;
  }
  hDma2dHandler.Init.OutputOffset = OffLine;      
  
  hDma2dHandler.Instance = DMA2D;
  
  /* DMA2D Initialization */
  if(HAL_DMA2D_Init(&hDma2dHandler) == HAL_OK) 
  {
    if(HAL_DMA2D_ConfigLayer(&hDma2dHandler, LayerIndex) == HAL_OK) 
    {
      if (HAL_DMA2D_Start(&hDma2dHandler, ColorIndex, (uint32_t)pDst, xSize, ySize) == HAL_OK)
      {
        /* Polling For DMA transfer */  
        HAL_DMA2D_PollForTransfer(&hDma2dHandler, 10);
      }
    }
  } 
}

/**
  * @brief  Converts a line to an ARGB8888 pixel format.
  * @param  pSrc: Pointer to source buffer
  * @param  pDst: Output color
  * @param  xSize: Buffer width
  * @param  ColorMode: Input color mode   
  * @retval None
  */
static void LL_ConvertLineToARGB8888(void *pSrc, void *pDst, uint32_t xSize, uint32_t ColorMode)
{    
  /* Configure the DMA2D Mode, Color Mode and output offset */
  hDma2dHandler.Init.Mode         = DMA2D_M2M_PFC;
  hDma2dHandler.Init.ColorMode    = DMA2D_ARGB8888;
  hDma2dHandler.Init.OutputOffset = 0;     
  
  /* Foreground Configuration */
  hDma2dHandler.LayerCfg[1].AlphaMode = DMA2D_NO_MODIF_ALPHA;
  hDma2dHandler.LayerCfg[1].InputAlpha = 0xFF;
  hDma2dHandler.LayerCfg[1].InputColorMode = ColorMode;
  hDma2dHandler.LayerCfg[1].InputOffset = 0;
  
  hDma2dHandler.Instance = DMA2D; 
  
  /* DMA2D Initialization */
  if(HAL_DMA2D_Init(&hDma2dHandler) == HAL_OK) 
  {
    if(HAL_DMA2D_ConfigLayer(&hDma2dHandler, 1) == HAL_OK) 
    {
      if (HAL_DMA2D_Start(&hDma2dHandler, (uint32_t)pSrc, (uint32_t)pDst, xSize, 1) == HAL_OK)
      {
        /* Polling For DMA transfer */  
        HAL_DMA2D_PollForTransfer(&hDma2dHandler, 10);
      }
    }
  } 
}

/**
  * @}
  */

/**
  * @}
  */
  
/**
  * @}
  */
  
/**
  * @}
  */        

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/