stm32746g_discovery_lcd.c

00001 /**
00002   ******************************************************************************
00003   * @file    stm32746g_discovery_lcd.c
00004   * @author  MCD Application Team
00005   * @version V1.0.0
00006   * @date    25-June-2015
00007   * @brief   This file includes the driver for Liquid Crystal Display (LCD) module
00008   *          mounted on STM32746G-Discovery board.
00009   @verbatim
00010   1. How To use this driver:
00011   --------------------------
00012      - This driver is used to drive directly an LCD TFT using the LTDC controller.
00013      - This driver uses timing and setting for RK043FN48H LCD.
00014   
00015   2. Driver description:
00016   ---------------------
00017     + Initialization steps:
00018        o Initialize the LCD using the BSP_LCD_Init() function.
00019        o Apply the Layer configuration using the BSP_LCD_LayerDefaultInit() function.    
00020        o Select the LCD layer to be used using the BSP_LCD_SelectLayer() function.
00021        o Enable the LCD display using the BSP_LCD_DisplayOn() function.
00022   
00023     + Options
00024        o Configure and enable the color keying functionality using the 
00025          BSP_LCD_SetColorKeying() function.
00026        o Modify in the fly the transparency and/or the frame buffer address
00027          using the following functions:
00028          - BSP_LCD_SetTransparency()
00029          - BSP_LCD_SetLayerAddress() 
00030     
00031     + Display on LCD
00032        o Clear the hole LCD using BSP_LCD_Clear() function or only one specified string
00033          line using the BSP_LCD_ClearStringLine() function.
00034        o Display a character on the specified line and column using the BSP_LCD_DisplayChar()
00035          function or a complete string line using the BSP_LCD_DisplayStringAtLine() function.
00036        o Display a string line on the specified position (x,y in pixel) and align mode
00037          using the BSP_LCD_DisplayStringAtLine() function.          
00038        o Draw and fill a basic shapes (dot, line, rectangle, circle, ellipse, .. bitmap) 
00039          on LCD using the available set of functions.       
00040   @endverbatim
00041   ******************************************************************************
00042   * @attention
00043   *
00044   * <h2><center>&copy; COPYRIGHT(c) 2015 STMicroelectronics</center></h2>
00045   *
00046   * Redistribution and use in source and binary forms, with or without modification,
00047   * are permitted provided that the following conditions are met:
00048   *   1. Redistributions of source code must retain the above copyright notice,
00049   *      this list of conditions and the following disclaimer.
00050   *   2. Redistributions in binary form must reproduce the above copyright notice,
00051   *      this list of conditions and the following disclaimer in the documentation
00052   *      and/or other materials provided with the distribution.
00053   *   3. Neither the name of STMicroelectronics nor the names of its contributors
00054   *      may be used to endorse or promote products derived from this software
00055   *      without specific prior written permission.
00056   *
00057   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
00058   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00059   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
00060   * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
00061   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
00062   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
00063   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
00064   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
00065   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
00066   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00067   *
00068   ******************************************************************************
00069   */ 
00070 
00071 /* Includes ------------------------------------------------------------------*/
00072 #include "stm32746g_discovery_lcd.h"
00073 #include "fonts.h"
00074 /*
00075 #include "font24.c"
00076 #include "font20.c"
00077 #include "font16.c"
00078 #include "font12.c"
00079 #include "font8.c"
00080 */
00081 
00082 /** @addtogroup BSP
00083   * @{
00084   */
00085 
00086 /** @addtogroup STM32746G_DISCOVERY
00087   * @{
00088   */
00089     
00090 /** @addtogroup STM32746G_DISCOVERY_LCD
00091   * @{
00092   */ 
00093 
00094 /** @defgroup STM32746G_DISCOVERY_LCD_Private_TypesDefinitions STM32746G_DISCOVERY_LCD Private Types Definitions
00095   * @{
00096   */ 
00097 /**
00098   * @}
00099   */ 
00100 
00101 /** @defgroup STM32746G_DISCOVERY_LCD_Private_Defines STM32746G_DISCOVERY LCD Private Defines
00102   * @{
00103   */
00104 #define POLY_X(Z)              ((int32_t)((Points + Z)->X))
00105 #define POLY_Y(Z)              ((int32_t)((Points + Z)->Y))      
00106 /**
00107   * @}
00108   */ 
00109 
00110 /** @defgroup STM32746G_DISCOVERY_LCD_Private_Macros STM32746G_DISCOVERY_LCD Private Macros
00111   * @{
00112   */
00113 #define ABS(X)  ((X) > 0 ? (X) : -(X))      
00114 /**
00115   * @}
00116   */ 
00117     
00118 /** @defgroup STM32746G_DISCOVERY_LCD_Private_Variables STM32746G_DISCOVERY_LCD Private Variables
00119   * @{
00120   */ 
00121 static LTDC_HandleTypeDef  hLtdcHandler;
00122 static DMA2D_HandleTypeDef hDma2dHandler;
00123 
00124 /* Default LCD configuration with LCD Layer 1 */
00125 static uint32_t            ActiveLayer = 0;
00126 static LCD_DrawPropTypeDef DrawProp[MAX_LAYER_NUMBER];
00127 /**
00128   * @}
00129   */ 
00130 
00131 /** @defgroup STM32746G_DISCOVERY_LCD_Private_FunctionPrototypes STM32746G_DISCOVERY_LCD Private Function Prototypes
00132   * @{
00133   */ 
00134 static void DrawChar(uint16_t Xpos, uint16_t Ypos, const uint8_t *c);
00135 static void FillTriangle(uint16_t x1, uint16_t x2, uint16_t x3, uint16_t y1, uint16_t y2, uint16_t y3);
00136 static void LL_FillBuffer(uint32_t LayerIndex, void *pDst, uint32_t xSize, uint32_t ySize, uint32_t OffLine, uint32_t ColorIndex);
00137 static void LL_ConvertLineToARGB8888(void * pSrc, void *pDst, uint32_t xSize, uint32_t ColorMode);
00138 /**
00139   * @}
00140   */ 
00141 
00142 /** @defgroup STM32746G_DISCOVERY_LCD_Exported_Functions STM32746G_DISCOVERY_LCD Exported Functions
00143   * @{
00144   */
00145 
00146 /**
00147   * @brief  Initializes the LCD.
00148   * @retval LCD state
00149   */
00150 uint8_t BSP_LCD_Init(void)
00151 {    
00152   /* Select the used LCD */
00153 
00154   /* The RK043FN48H LCD 480x272 is selected */
00155   /* Timing Configuration */
00156   hLtdcHandler.Init.HorizontalSync = (RK043FN48H_HSYNC - 1);
00157   hLtdcHandler.Init.VerticalSync = (RK043FN48H_VSYNC - 1);
00158   hLtdcHandler.Init.AccumulatedHBP = (RK043FN48H_HSYNC + RK043FN48H_HBP - 1);
00159   hLtdcHandler.Init.AccumulatedVBP = (RK043FN48H_VSYNC + RK043FN48H_VBP - 1);
00160   hLtdcHandler.Init.AccumulatedActiveH = (RK043FN48H_HEIGHT + RK043FN48H_VSYNC + RK043FN48H_VBP - 1);
00161   hLtdcHandler.Init.AccumulatedActiveW = (RK043FN48H_WIDTH + RK043FN48H_HSYNC + RK043FN48H_HBP - 1);
00162   hLtdcHandler.Init.TotalHeigh = (RK043FN48H_HEIGHT + RK043FN48H_VSYNC + RK043FN48H_VBP + RK043FN48H_VFP - 1);
00163   hLtdcHandler.Init.TotalWidth = (RK043FN48H_WIDTH + RK043FN48H_HSYNC + RK043FN48H_HBP + RK043FN48H_HFP - 1);
00164   
00165   /* LCD clock configuration */
00166   BSP_LCD_ClockConfig(&hLtdcHandler, NULL);
00167 
00168   /* Initialize the LCD pixel width and pixel height */
00169   hLtdcHandler.LayerCfg->ImageWidth  = RK043FN48H_WIDTH;
00170   hLtdcHandler.LayerCfg->ImageHeight = RK043FN48H_HEIGHT;
00171 
00172   /* Background value */
00173   hLtdcHandler.Init.Backcolor.Blue = 0;
00174   hLtdcHandler.Init.Backcolor.Green = 0;
00175   hLtdcHandler.Init.Backcolor.Red = 0;
00176   
00177   /* Polarity */
00178   hLtdcHandler.Init.HSPolarity = LTDC_HSPOLARITY_AL;
00179   hLtdcHandler.Init.VSPolarity = LTDC_VSPOLARITY_AL; 
00180   hLtdcHandler.Init.DEPolarity = LTDC_DEPOLARITY_AL;  
00181   hLtdcHandler.Init.PCPolarity = LTDC_PCPOLARITY_IPC;
00182   hLtdcHandler.Instance = LTDC;
00183 
00184   if(HAL_LTDC_GetState(&hLtdcHandler) == HAL_LTDC_STATE_RESET)
00185   {
00186     /* Initialize the LCD Msp: this __weak function can be rewritten by the application */
00187     BSP_LCD_MspInit(&hLtdcHandler, NULL);
00188   }
00189   HAL_LTDC_Init(&hLtdcHandler);
00190 
00191   /* Assert display enable LCD_DISP pin */
00192   HAL_GPIO_WritePin(LCD_DISP_GPIO_PORT, LCD_DISP_PIN, GPIO_PIN_SET);
00193 
00194   /* Assert backlight LCD_BL_CTRL pin */
00195   HAL_GPIO_WritePin(LCD_BL_CTRL_GPIO_PORT, LCD_BL_CTRL_PIN, GPIO_PIN_SET);
00196 
00197 #if !defined(DATA_IN_ExtSDRAM)
00198   /* Initialize the SDRAM */
00199   BSP_SDRAM_Init();
00200 #endif
00201     
00202   /* Initialize the font */
00203   BSP_LCD_SetFont(&LCD_DEFAULT_FONT);
00204   
00205   return LCD_OK;
00206 }
00207 
00208 /**
00209   * @brief  DeInitializes the LCD.
00210   * @retval LCD state
00211   */
00212 uint8_t BSP_LCD_DeInit(void)
00213 { 
00214   /* Initialize the hLtdcHandler Instance parameter */
00215   hLtdcHandler.Instance = LTDC;
00216 
00217  /* Disable LTDC block */
00218   __HAL_LTDC_DISABLE(&hLtdcHandler);
00219 
00220   /* DeInit the LTDC */
00221   HAL_LTDC_DeInit(&hLtdcHandler);
00222 
00223   /* DeInit the LTDC MSP : this __weak function can be rewritten by the application */
00224   BSP_LCD_MspDeInit(&hLtdcHandler, NULL);
00225 
00226   return LCD_OK;
00227 }
00228 
00229 /**
00230   * @brief  Gets the LCD X size.
00231   * @retval Used LCD X size
00232   */
00233 uint32_t BSP_LCD_GetXSize(void)
00234 {
00235   return hLtdcHandler.LayerCfg[ActiveLayer].ImageWidth;
00236 }
00237 
00238 /**
00239   * @brief  Gets the LCD Y size.
00240   * @retval Used LCD Y size
00241   */
00242 uint32_t BSP_LCD_GetYSize(void)
00243 {
00244   return hLtdcHandler.LayerCfg[ActiveLayer].ImageHeight;
00245 }
00246 
00247 /**
00248   * @brief  Set the LCD X size.
00249   * @param  imageWidthPixels : image width in pixels unit
00250   * @retval None
00251   */
00252 void BSP_LCD_SetXSize(uint32_t imageWidthPixels)
00253 {
00254   hLtdcHandler.LayerCfg[ActiveLayer].ImageWidth = imageWidthPixels;
00255 }
00256 
00257 /**
00258   * @brief  Set the LCD Y size.
00259   * @param  imageHeightPixels : image height in lines unit
00260   * @retval None
00261   */
00262 void BSP_LCD_SetYSize(uint32_t imageHeightPixels)
00263 {
00264   hLtdcHandler.LayerCfg[ActiveLayer].ImageHeight = imageHeightPixels;
00265 }
00266 
00267 /**
00268   * @brief  Initializes the LCD layer in ARGB8888 format (32 bits per pixel).
00269   * @param  LayerIndex: Layer foreground or background
00270   * @param  FB_Address: Layer frame buffer
00271   * @retval None
00272   */
00273 void BSP_LCD_LayerDefaultInit(uint16_t LayerIndex, uint32_t FB_Address)
00274 {     
00275   LCD_LayerCfgTypeDef  layer_cfg;
00276 
00277   /* Layer Init */
00278   layer_cfg.WindowX0 = 0;
00279   layer_cfg.WindowX1 = BSP_LCD_GetXSize();
00280   layer_cfg.WindowY0 = 0;
00281   layer_cfg.WindowY1 = BSP_LCD_GetYSize(); 
00282   layer_cfg.PixelFormat = LTDC_PIXEL_FORMAT_ARGB8888;
00283   layer_cfg.FBStartAdress = FB_Address;
00284   layer_cfg.Alpha = 255;
00285   layer_cfg.Alpha0 = 0;
00286   layer_cfg.Backcolor.Blue = 0;
00287   layer_cfg.Backcolor.Green = 0;
00288   layer_cfg.Backcolor.Red = 0;
00289   layer_cfg.BlendingFactor1 = LTDC_BLENDING_FACTOR1_PAxCA;
00290   layer_cfg.BlendingFactor2 = LTDC_BLENDING_FACTOR2_PAxCA;
00291   layer_cfg.ImageWidth = BSP_LCD_GetXSize();
00292   layer_cfg.ImageHeight = BSP_LCD_GetYSize();
00293   
00294   HAL_LTDC_ConfigLayer(&hLtdcHandler, &layer_cfg, LayerIndex); 
00295 
00296   DrawProp[LayerIndex].BackColor = LCD_COLOR_WHITE;
00297   DrawProp[LayerIndex].pFont     = &Font24;
00298   DrawProp[LayerIndex].TextColor = LCD_COLOR_BLACK; 
00299 }
00300 
00301 /**
00302   * @brief  Initializes the LCD layer in RGB565 format (16 bits per pixel).
00303   * @param  LayerIndex: Layer foreground or background
00304   * @param  FB_Address: Layer frame buffer
00305   * @retval None
00306   */
00307 void BSP_LCD_LayerRgb565Init(uint16_t LayerIndex, uint32_t FB_Address)
00308 {     
00309   LCD_LayerCfgTypeDef  layer_cfg;
00310 
00311   /* Layer Init */
00312   layer_cfg.WindowX0 = 0;
00313   layer_cfg.WindowX1 = BSP_LCD_GetXSize();
00314   layer_cfg.WindowY0 = 0;
00315   layer_cfg.WindowY1 = BSP_LCD_GetYSize(); 
00316   layer_cfg.PixelFormat = LTDC_PIXEL_FORMAT_RGB565;
00317   layer_cfg.FBStartAdress = FB_Address;
00318   layer_cfg.Alpha = 255;
00319   layer_cfg.Alpha0 = 0;
00320   layer_cfg.Backcolor.Blue = 0;
00321   layer_cfg.Backcolor.Green = 0;
00322   layer_cfg.Backcolor.Red = 0;
00323   layer_cfg.BlendingFactor1 = LTDC_BLENDING_FACTOR1_PAxCA;
00324   layer_cfg.BlendingFactor2 = LTDC_BLENDING_FACTOR2_PAxCA;
00325   layer_cfg.ImageWidth = BSP_LCD_GetXSize();
00326   layer_cfg.ImageHeight = BSP_LCD_GetYSize();
00327   
00328   HAL_LTDC_ConfigLayer(&hLtdcHandler, &layer_cfg, LayerIndex); 
00329 
00330   DrawProp[LayerIndex].BackColor = LCD_COLOR_WHITE;
00331   DrawProp[LayerIndex].pFont     = &Font24;
00332   DrawProp[LayerIndex].TextColor = LCD_COLOR_BLACK; 
00333 }
00334 
00335 /**
00336   * @brief  Selects the LCD Layer.
00337   * @param  LayerIndex: Layer foreground or background
00338   * @retval None
00339   */
00340 void BSP_LCD_SelectLayer(uint32_t LayerIndex)
00341 {
00342   ActiveLayer = LayerIndex;
00343 } 
00344 
00345 /**
00346   * @brief  Sets an LCD Layer visible
00347   * @param  LayerIndex: Visible Layer
00348   * @param  State: New state of the specified layer
00349   *          This parameter can be one of the following values:
00350   *            @arg  ENABLE
00351   *            @arg  DISABLE 
00352   * @retval None
00353   */
00354 void BSP_LCD_SetLayerVisible(uint32_t LayerIndex, FunctionalState State)
00355 {
00356   if(State == ENABLE)
00357   {
00358     __HAL_LTDC_LAYER_ENABLE(&hLtdcHandler, LayerIndex);
00359   }
00360   else
00361   {
00362     __HAL_LTDC_LAYER_DISABLE(&hLtdcHandler, LayerIndex);
00363   }
00364   __HAL_LTDC_RELOAD_CONFIG(&hLtdcHandler);
00365 } 
00366 
00367 /**
00368   * @brief  Configures the transparency.
00369   * @param  LayerIndex: Layer foreground or background.
00370   * @param  Transparency: Transparency
00371   *           This parameter must be a number between Min_Data = 0x00 and Max_Data = 0xFF 
00372   * @retval None
00373   */
00374 void BSP_LCD_SetTransparency(uint32_t LayerIndex, uint8_t Transparency)
00375 {    
00376   HAL_LTDC_SetAlpha(&hLtdcHandler, Transparency, LayerIndex);
00377 }
00378 
00379 /**
00380   * @brief  Sets an LCD layer frame buffer address.
00381   * @param  LayerIndex: Layer foreground or background
00382   * @param  Address: New LCD frame buffer value      
00383   * @retval None
00384   */
00385 void BSP_LCD_SetLayerAddress(uint32_t LayerIndex, uint32_t Address)
00386 {
00387   HAL_LTDC_SetAddress(&hLtdcHandler, Address, LayerIndex);
00388 }
00389 
00390 /**
00391   * @brief  Sets display window.
00392   * @param  LayerIndex: Layer index
00393   * @param  Xpos: LCD X position
00394   * @param  Ypos: LCD Y position
00395   * @param  Width: LCD window width
00396   * @param  Height: LCD window height  
00397   * @retval None
00398   */
00399 void BSP_LCD_SetLayerWindow(uint16_t LayerIndex, uint16_t Xpos, uint16_t Ypos, uint16_t Width, uint16_t Height)
00400 {
00401   /* Reconfigure the layer size */
00402   HAL_LTDC_SetWindowSize(&hLtdcHandler, Width, Height, LayerIndex);
00403   
00404   /* Reconfigure the layer position */
00405   HAL_LTDC_SetWindowPosition(&hLtdcHandler, Xpos, Ypos, LayerIndex); 
00406 }
00407 
00408 /**
00409   * @brief  Configures and sets the color keying.
00410   * @param  LayerIndex: Layer foreground or background
00411   * @param  RGBValue: Color reference
00412   * @retval None
00413   */
00414 void BSP_LCD_SetColorKeying(uint32_t LayerIndex, uint32_t RGBValue)
00415 {  
00416   /* Configure and Enable the color Keying for LCD Layer */
00417   HAL_LTDC_ConfigColorKeying(&hLtdcHandler, RGBValue, LayerIndex);
00418   HAL_LTDC_EnableColorKeying(&hLtdcHandler, LayerIndex);
00419 }
00420 
00421 /**
00422   * @brief  Disables the color keying.
00423   * @param  LayerIndex: Layer foreground or background
00424   * @retval None
00425   */
00426 void BSP_LCD_ResetColorKeying(uint32_t LayerIndex)
00427 {   
00428   /* Disable the color Keying for LCD Layer */
00429   HAL_LTDC_DisableColorKeying(&hLtdcHandler, LayerIndex);
00430 }
00431 
00432 /**
00433   * @brief  Sets the LCD text color.
00434   * @param  Color: Text color code ARGB(8-8-8-8)
00435   * @retval None
00436   */
00437 void BSP_LCD_SetTextColor(uint32_t Color)
00438 {
00439   DrawProp[ActiveLayer].TextColor = Color;
00440 }
00441 
00442 /**
00443   * @brief  Gets the LCD text color.
00444   * @retval Used text color.
00445   */
00446 uint32_t BSP_LCD_GetTextColor(void)
00447 {
00448   return DrawProp[ActiveLayer].TextColor;
00449 }
00450 
00451 /**
00452   * @brief  Sets the LCD background color.
00453   * @param  Color: Layer background color code ARGB(8-8-8-8)
00454   * @retval None
00455   */
00456 void BSP_LCD_SetBackColor(uint32_t Color)
00457 {
00458   DrawProp[ActiveLayer].BackColor = Color;
00459 }
00460 
00461 /**
00462   * @brief  Gets the LCD background color.
00463   * @retval Used background colour
00464   */
00465 uint32_t BSP_LCD_GetBackColor(void)
00466 {
00467   return DrawProp[ActiveLayer].BackColor;
00468 }
00469 
00470 /**
00471   * @brief  Sets the LCD text font.
00472   * @param  fonts: Layer font to be used
00473   * @retval None
00474   */
00475 void BSP_LCD_SetFont(sFONT *fonts)
00476 {
00477   DrawProp[ActiveLayer].pFont = fonts;
00478 }
00479 
00480 /**
00481   * @brief  Gets the LCD text font.
00482   * @retval Used layer font
00483   */
00484 sFONT *BSP_LCD_GetFont(void)
00485 {
00486   return DrawProp[ActiveLayer].pFont;
00487 }
00488 
00489 /**
00490   * @brief  Reads an LCD pixel.
00491   * @param  Xpos: X position 
00492   * @param  Ypos: Y position 
00493   * @retval RGB pixel color
00494   */
00495 uint32_t BSP_LCD_ReadPixel(uint16_t Xpos, uint16_t Ypos)
00496 {
00497   uint32_t ret = 0;
00498   
00499   if(hLtdcHandler.LayerCfg[ActiveLayer].PixelFormat == LTDC_PIXEL_FORMAT_ARGB8888)
00500   {
00501     /* Read data value from SDRAM memory */
00502     ret = *(__IO uint32_t*) (hLtdcHandler.LayerCfg[ActiveLayer].FBStartAdress + (2*(Ypos*BSP_LCD_GetXSize() + Xpos)));
00503   }
00504   else if(hLtdcHandler.LayerCfg[ActiveLayer].PixelFormat == LTDC_PIXEL_FORMAT_RGB888)
00505   {
00506     /* Read data value from SDRAM memory */
00507     ret = (*(__IO uint32_t*) (hLtdcHandler.LayerCfg[ActiveLayer].FBStartAdress + (2*(Ypos*BSP_LCD_GetXSize() + Xpos))) & 0x00FFFFFF);
00508   }
00509   else if((hLtdcHandler.LayerCfg[ActiveLayer].PixelFormat == LTDC_PIXEL_FORMAT_RGB565) || \
00510           (hLtdcHandler.LayerCfg[ActiveLayer].PixelFormat == LTDC_PIXEL_FORMAT_ARGB4444) || \
00511           (hLtdcHandler.LayerCfg[ActiveLayer].PixelFormat == LTDC_PIXEL_FORMAT_AL88))  
00512   {
00513     /* Read data value from SDRAM memory */
00514     ret = *(__IO uint16_t*) (hLtdcHandler.LayerCfg[ActiveLayer].FBStartAdress + (2*(Ypos*BSP_LCD_GetXSize() + Xpos)));    
00515   }
00516   else
00517   {
00518     /* Read data value from SDRAM memory */
00519     ret = *(__IO uint8_t*) (hLtdcHandler.LayerCfg[ActiveLayer].FBStartAdress + (2*(Ypos*BSP_LCD_GetXSize() + Xpos)));    
00520   }
00521   
00522   return ret;
00523 }
00524 
00525 /**
00526   * @brief  Clears the hole LCD.
00527   * @param  Color: Color of the background
00528   * @retval None
00529   */
00530 void BSP_LCD_Clear(uint32_t Color)
00531 { 
00532   /* Clear the LCD */ 
00533   LL_FillBuffer(ActiveLayer, (uint32_t *)(hLtdcHandler.LayerCfg[ActiveLayer].FBStartAdress), BSP_LCD_GetXSize(), BSP_LCD_GetYSize(), 0, Color);
00534 }
00535 
00536 /**
00537   * @brief  Clears the selected line.
00538   * @param  Line: Line to be cleared
00539   * @retval None
00540   */
00541 void BSP_LCD_ClearStringLine(uint32_t Line)
00542 {
00543   uint32_t color_backup = DrawProp[ActiveLayer].TextColor;
00544   DrawProp[ActiveLayer].TextColor = DrawProp[ActiveLayer].BackColor;
00545   
00546   /* Draw rectangle with background color */
00547   BSP_LCD_FillRect(0, (Line * DrawProp[ActiveLayer].pFont->Height), BSP_LCD_GetXSize(), DrawProp[ActiveLayer].pFont->Height);
00548   
00549   DrawProp[ActiveLayer].TextColor = color_backup;
00550   BSP_LCD_SetTextColor(DrawProp[ActiveLayer].TextColor);  
00551 }
00552 
00553 /**
00554   * @brief  Displays one character.
00555   * @param  Xpos: Start column address
00556   * @param  Ypos: Line where to display the character shape.
00557   * @param  Ascii: Character ascii code
00558   *           This parameter must be a number between Min_Data = 0x20 and Max_Data = 0x7E 
00559   * @retval None
00560   */
00561 void BSP_LCD_DisplayChar(uint16_t Xpos, uint16_t Ypos, uint8_t Ascii)
00562 {
00563   DrawChar(Xpos, Ypos, &DrawProp[ActiveLayer].pFont->table[(Ascii-' ') *\
00564     DrawProp[ActiveLayer].pFont->Height * ((DrawProp[ActiveLayer].pFont->Width + 7) / 8)]);
00565 }
00566 
00567 /**
00568   * @brief  Displays characters on the LCD.
00569   * @param  Xpos: X position (in pixel)
00570   * @param  Ypos: Y position (in pixel)   
00571   * @param  Text: Pointer to string to display on LCD
00572   * @param  Mode: Display mode
00573   *          This parameter can be one of the following values:
00574   *            @arg  CENTER_MODE
00575   *            @arg  RIGHT_MODE
00576   *            @arg  LEFT_MODE   
00577   * @retval None
00578   */
00579 void BSP_LCD_DisplayStringAt(uint16_t Xpos, uint16_t Ypos, uint8_t *Text, Text_AlignModeTypdef Mode)
00580 {
00581   uint16_t ref_column = 1, i = 0;
00582   uint32_t size = 0, xsize = 0; 
00583   uint8_t  *ptr = Text;
00584   
00585   /* Get the text size */
00586   while (*ptr++) size ++ ;
00587   
00588   /* Characters number per line */
00589   xsize = (BSP_LCD_GetXSize()/DrawProp[ActiveLayer].pFont->Width);
00590   
00591   switch (Mode)
00592   {
00593   case CENTER_MODE:
00594     {
00595       ref_column = Xpos + ((xsize - size)* DrawProp[ActiveLayer].pFont->Width) / 2;
00596       break;
00597     }
00598   case LEFT_MODE:
00599     {
00600       ref_column = Xpos;
00601       break;
00602     }
00603   case RIGHT_MODE:
00604     {
00605       ref_column = - Xpos + ((xsize - size)*DrawProp[ActiveLayer].pFont->Width);
00606       break;
00607     }    
00608   default:
00609     {
00610       ref_column = Xpos;
00611       break;
00612     }
00613   }
00614   
00615   /* Check that the Start column is located in the screen */
00616   if ((ref_column < 1) || (ref_column >= 0x8000))
00617   {
00618     ref_column = 1;
00619   }
00620 
00621   /* Send the string character by character on LCD */
00622   while ((*Text != 0) & (((BSP_LCD_GetXSize() - (i*DrawProp[ActiveLayer].pFont->Width)) & 0xFFFF) >= DrawProp[ActiveLayer].pFont->Width))
00623   {
00624     /* Display one character on LCD */
00625     BSP_LCD_DisplayChar(ref_column, Ypos, *Text);
00626     /* Decrement the column position by 16 */
00627     ref_column += DrawProp[ActiveLayer].pFont->Width;
00628     /* Point on the next character */
00629     Text++;
00630     i++;
00631   }  
00632 }
00633 
00634 /**
00635   * @brief  Displays a maximum of 60 characters on the LCD.
00636   * @param  Line: Line where to display the character shape
00637   * @param  ptr: Pointer to string to display on LCD
00638   * @retval None
00639   */
00640 void BSP_LCD_DisplayStringAtLine(uint16_t Line, uint8_t *ptr)
00641 {  
00642   BSP_LCD_DisplayStringAt(0, LINE(Line), ptr, LEFT_MODE);
00643 }
00644 
00645 /**
00646   * @brief  Draws an horizontal line.
00647   * @param  Xpos: X position
00648   * @param  Ypos: Y position
00649   * @param  Length: Line length
00650   * @retval None
00651   */
00652 void BSP_LCD_DrawHLine(uint16_t Xpos, uint16_t Ypos, uint16_t Length)
00653 {
00654   uint32_t  Xaddress = 0;
00655   
00656   /* Get the line address */
00657   if(hLtdcHandler.LayerCfg[ActiveLayer].PixelFormat == LTDC_PIXEL_FORMAT_RGB565)
00658   { /* RGB565 format */
00659     Xaddress = (hLtdcHandler.LayerCfg[ActiveLayer].FBStartAdress) + 2*(BSP_LCD_GetXSize()*Ypos + Xpos);
00660   }
00661   else
00662   { /* ARGB8888 format */
00663     Xaddress = (hLtdcHandler.LayerCfg[ActiveLayer].FBStartAdress) + 4*(BSP_LCD_GetXSize()*Ypos + Xpos);
00664   }
00665   
00666   /* Write line */
00667   LL_FillBuffer(ActiveLayer, (uint32_t *)Xaddress, Length, 1, 0, DrawProp[ActiveLayer].TextColor);
00668 }
00669 
00670 /**
00671   * @brief  Draws a vertical line.
00672   * @param  Xpos: X position
00673   * @param  Ypos: Y position
00674   * @param  Length: Line length
00675   * @retval None
00676   */
00677 void BSP_LCD_DrawVLine(uint16_t Xpos, uint16_t Ypos, uint16_t Length)
00678 {
00679   uint32_t  Xaddress = 0;
00680   
00681   /* Get the line address */
00682   if(hLtdcHandler.LayerCfg[ActiveLayer].PixelFormat == LTDC_PIXEL_FORMAT_RGB565)
00683   { /* RGB565 format */
00684     Xaddress = (hLtdcHandler.LayerCfg[ActiveLayer].FBStartAdress) + 2*(BSP_LCD_GetXSize()*Ypos + Xpos);
00685   }
00686   else
00687   { /* ARGB8888 format */
00688     Xaddress = (hLtdcHandler.LayerCfg[ActiveLayer].FBStartAdress) + 4*(BSP_LCD_GetXSize()*Ypos + Xpos);
00689   }
00690   
00691   /* Write line */
00692   LL_FillBuffer(ActiveLayer, (uint32_t *)Xaddress, 1, Length, (BSP_LCD_GetXSize() - 1), DrawProp[ActiveLayer].TextColor);
00693 }
00694 
00695 /**
00696   * @brief  Draws an uni-line (between two points).
00697   * @param  x1: Point 1 X position
00698   * @param  y1: Point 1 Y position
00699   * @param  x2: Point 2 X position
00700   * @param  y2: Point 2 Y position
00701   * @retval None
00702   */
00703 void BSP_LCD_DrawLine(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2)
00704 {
00705   int16_t deltax = 0, deltay = 0, x = 0, y = 0, xinc1 = 0, xinc2 = 0, 
00706   yinc1 = 0, yinc2 = 0, den = 0, num = 0, num_add = 0, num_pixels = 0, 
00707   curpixel = 0;
00708   
00709   deltax = ABS(x2 - x1);        /* The difference between the x's */
00710   deltay = ABS(y2 - y1);        /* The difference between the y's */
00711   x = x1;                       /* Start x off at the first pixel */
00712   y = y1;                       /* Start y off at the first pixel */
00713   
00714   if (x2 >= x1)                 /* The x-values are increasing */
00715   {
00716     xinc1 = 1;
00717     xinc2 = 1;
00718   }
00719   else                          /* The x-values are decreasing */
00720   {
00721     xinc1 = -1;
00722     xinc2 = -1;
00723   }
00724   
00725   if (y2 >= y1)                 /* The y-values are increasing */
00726   {
00727     yinc1 = 1;
00728     yinc2 = 1;
00729   }
00730   else                          /* The y-values are decreasing */
00731   {
00732     yinc1 = -1;
00733     yinc2 = -1;
00734   }
00735   
00736   if (deltax >= deltay)         /* There is at least one x-value for every y-value */
00737   {
00738     xinc1 = 0;                  /* Don't change the x when numerator >= denominator */
00739     yinc2 = 0;                  /* Don't change the y for every iteration */
00740     den = deltax;
00741     num = deltax / 2;
00742     num_add = deltay;
00743     num_pixels = deltax;         /* There are more x-values than y-values */
00744   }
00745   else                          /* There is at least one y-value for every x-value */
00746   {
00747     xinc2 = 0;                  /* Don't change the x for every iteration */
00748     yinc1 = 0;                  /* Don't change the y when numerator >= denominator */
00749     den = deltay;
00750     num = deltay / 2;
00751     num_add = deltax;
00752     num_pixels = deltay;         /* There are more y-values than x-values */
00753   }
00754   
00755   for (curpixel = 0; curpixel <= num_pixels; curpixel++)
00756   {
00757     BSP_LCD_DrawPixel(x, y, DrawProp[ActiveLayer].TextColor);   /* Draw the current pixel */
00758     num += num_add;                            /* Increase the numerator by the top of the fraction */
00759     if (num >= den)                           /* Check if numerator >= denominator */
00760     {
00761       num -= den;                             /* Calculate the new numerator value */
00762       x += xinc1;                             /* Change the x as appropriate */
00763       y += yinc1;                             /* Change the y as appropriate */
00764     }
00765     x += xinc2;                               /* Change the x as appropriate */
00766     y += yinc2;                               /* Change the y as appropriate */
00767   }
00768 }
00769 
00770 /**
00771   * @brief  Draws a rectangle.
00772   * @param  Xpos: X position
00773   * @param  Ypos: Y position
00774   * @param  Width: Rectangle width  
00775   * @param  Height: Rectangle height
00776   * @retval None
00777   */
00778 void BSP_LCD_DrawRect(uint16_t Xpos, uint16_t Ypos, uint16_t Width, uint16_t Height)
00779 {
00780   /* Draw horizontal lines */
00781   BSP_LCD_DrawHLine(Xpos, Ypos, Width);
00782   BSP_LCD_DrawHLine(Xpos, (Ypos+ Height), Width);
00783   
00784   /* Draw vertical lines */
00785   BSP_LCD_DrawVLine(Xpos, Ypos, Height);
00786   BSP_LCD_DrawVLine((Xpos + Width), Ypos, Height);
00787 }
00788 
00789 /**
00790   * @brief  Draws a circle.
00791   * @param  Xpos: X position
00792   * @param  Ypos: Y position
00793   * @param  Radius: Circle radius
00794   * @retval None
00795   */
00796 void BSP_LCD_DrawCircle(uint16_t Xpos, uint16_t Ypos, uint16_t Radius)
00797 {
00798   int32_t   decision;    /* Decision Variable */ 
00799   uint32_t  current_x;   /* Current X Value */
00800   uint32_t  current_y;   /* Current Y Value */
00801   
00802   decision = 3 - (Radius << 1);
00803   current_x = 0;
00804   current_y = Radius;
00805   
00806   while (current_x <= current_y)
00807   {
00808     BSP_LCD_DrawPixel((Xpos + current_x), (Ypos - current_y), DrawProp[ActiveLayer].TextColor);
00809     
00810     BSP_LCD_DrawPixel((Xpos - current_x), (Ypos - current_y), DrawProp[ActiveLayer].TextColor);
00811     
00812     BSP_LCD_DrawPixel((Xpos + current_y), (Ypos - current_x), DrawProp[ActiveLayer].TextColor);
00813     
00814     BSP_LCD_DrawPixel((Xpos - current_y), (Ypos - current_x), DrawProp[ActiveLayer].TextColor);
00815     
00816     BSP_LCD_DrawPixel((Xpos + current_x), (Ypos + current_y), DrawProp[ActiveLayer].TextColor);
00817     
00818     BSP_LCD_DrawPixel((Xpos - current_x), (Ypos + current_y), DrawProp[ActiveLayer].TextColor);
00819     
00820     BSP_LCD_DrawPixel((Xpos + current_y), (Ypos + current_x), DrawProp[ActiveLayer].TextColor);
00821     
00822     BSP_LCD_DrawPixel((Xpos - current_y), (Ypos + current_x), DrawProp[ActiveLayer].TextColor);
00823     
00824     if (decision < 0)
00825     { 
00826       decision += (current_x << 2) + 6;
00827     }
00828     else
00829     {
00830       decision += ((current_x - current_y) << 2) + 10;
00831       current_y--;
00832     }
00833     current_x++;
00834   } 
00835 }
00836 
00837 /**
00838   * @brief  Draws an poly-line (between many points).
00839   * @param  Points: Pointer to the points array
00840   * @param  PointCount: Number of points
00841   * @retval None
00842   */
00843 void BSP_LCD_DrawPolygon(pPoint Points, uint16_t PointCount)
00844 {
00845   int16_t x = 0, y = 0;
00846   
00847   if(PointCount < 2)
00848   {
00849     return;
00850   }
00851   
00852   BSP_LCD_DrawLine(Points->X, Points->Y, (Points+PointCount-1)->X, (Points+PointCount-1)->Y);
00853   
00854   while(--PointCount)
00855   {
00856     x = Points->X;
00857     y = Points->Y;
00858     Points++;
00859     BSP_LCD_DrawLine(x, y, Points->X, Points->Y);
00860   }
00861 }
00862 
00863 /**
00864   * @brief  Draws an ellipse on LCD.
00865   * @param  Xpos: X position
00866   * @param  Ypos: Y position
00867   * @param  XRadius: Ellipse X radius
00868   * @param  YRadius: Ellipse Y radius
00869   * @retval None
00870   */
00871 void BSP_LCD_DrawEllipse(int Xpos, int Ypos, int XRadius, int YRadius)
00872 {
00873   int x = 0, y = -YRadius, err = 2-2*XRadius, e2;
00874   float k = 0, rad1 = 0, rad2 = 0;
00875   
00876   rad1 = XRadius;
00877   rad2 = YRadius;
00878   
00879   k = (float)(rad2/rad1);  
00880   
00881   do { 
00882     BSP_LCD_DrawPixel((Xpos-(uint16_t)(x/k)), (Ypos+y), DrawProp[ActiveLayer].TextColor);
00883     BSP_LCD_DrawPixel((Xpos+(uint16_t)(x/k)), (Ypos+y), DrawProp[ActiveLayer].TextColor);
00884     BSP_LCD_DrawPixel((Xpos+(uint16_t)(x/k)), (Ypos-y), DrawProp[ActiveLayer].TextColor);
00885     BSP_LCD_DrawPixel((Xpos-(uint16_t)(x/k)), (Ypos-y), DrawProp[ActiveLayer].TextColor);      
00886     
00887     e2 = err;
00888     if (e2 <= x) {
00889       err += ++x*2+1;
00890       if (-y == x && e2 <= y) e2 = 0;
00891     }
00892     if (e2 > y) err += ++y*2+1;     
00893   }
00894   while (y <= 0);
00895 }
00896 
00897 /**
00898   * @brief  Draws a pixel on LCD.
00899   * @param  Xpos: X position
00900   * @param  Ypos: Y position
00901   * @param  RGB_Code: Pixel color in ARGB mode (8-8-8-8)
00902   * @retval None
00903   */
00904 void BSP_LCD_DrawPixel(uint16_t Xpos, uint16_t Ypos, uint32_t RGB_Code)
00905 {
00906   /* Write data value to all SDRAM memory */
00907   if(hLtdcHandler.LayerCfg[ActiveLayer].PixelFormat == LTDC_PIXEL_FORMAT_RGB565)
00908   { /* RGB565 format */
00909     *(__IO uint16_t*) (hLtdcHandler.LayerCfg[ActiveLayer].FBStartAdress + (2*(Ypos*BSP_LCD_GetXSize() + Xpos))) = (uint16_t)RGB_Code;
00910   }
00911   else
00912   { /* ARGB8888 format */
00913     *(__IO uint32_t*) (hLtdcHandler.LayerCfg[ActiveLayer].FBStartAdress + (4*(Ypos*BSP_LCD_GetXSize() + Xpos))) = RGB_Code;
00914   }
00915 }
00916 
00917 /**
00918   * @brief  Draws a bitmap picture loaded in the internal Flash in ARGB888 format (32 bits per pixel).
00919   * @param  Xpos: Bmp X position in the LCD
00920   * @param  Ypos: Bmp Y position in the LCD
00921   * @param  pbmp: Pointer to Bmp picture address in the internal Flash
00922   * @retval None
00923   */
00924  
00925 void BSP_LCD_DrawBitmap(uint32_t Xpos, uint32_t Ypos, uint8_t *Name_BMP)
00926 {
00927   #include <stdlib.h>
00928   uint32_t index = 0, width = 0, height = 0, bit_pixel = 0;
00929   uint32_t address;
00930   uint32_t input_color_mode = 0;
00931   char filename[50];
00932   int i, fileSize;
00933   char * buffer;
00934    
00935   i=0;
00936     while (*Name_BMP!='\0') {
00937         filename[i++]=*Name_BMP++;
00938     }  
00939    
00940   filename[i] = 0; 
00941     FILE *Image = fopen((const char *)&filename[0], "rb");  // open the bmp file
00942   
00943    // obtain file size:
00944     fseek (Image , 0 , SEEK_END);
00945     fileSize = ftell (Image);
00946     rewind (Image);
00947     
00948     // allocate memory to contain the whole file:
00949     buffer = (char*) malloc (sizeof(char)*fileSize/2);
00950     
00951     // copy the file into the buffer:
00952     fseek (Image, 0 , SEEK_SET );  // set SD file data start position    
00953     fread (buffer,1,fileSize,Image);
00954     fclose (Image);
00955   
00956   /* Get bitmap data address offset */
00957   index = *(__IO uint16_t *) (buffer + 10);
00958   index |= (*(__IO uint16_t *) (buffer + 12)) << 16;
00959   
00960   /* Read bitmap width */
00961   width = *(uint16_t *) (buffer + 18);
00962   width |= (*(uint16_t *) (buffer + 20)) << 16;
00963   
00964   /* Read bitmap height */
00965   height = *(uint16_t *) (buffer + 22);
00966   height |= (*(uint16_t *) (buffer + 24)) << 16; 
00967   
00968   /* Read bit/pixel */
00969   bit_pixel = *(uint16_t *) (buffer + 28);   
00970   
00971   /* Set the address */
00972   address = hLtdcHandler.LayerCfg[ActiveLayer].FBStartAdress + (((BSP_LCD_GetXSize()*Ypos) + Xpos)*(4));
00973   
00974   /* Get the layer pixel format */    
00975   if ((bit_pixel/8) == 4)
00976   {
00977     input_color_mode = CM_ARGB8888;
00978   }
00979   else if ((bit_pixel/8) == 2)
00980   {
00981     input_color_mode = CM_RGB565;   
00982   }
00983   else 
00984   {
00985     input_color_mode = CM_RGB888;
00986   }
00987   
00988   /* Bypass the bitmap header */
00989   buffer += (index + (width * (height - 1) * (bit_pixel/8)));  
00990   
00991   /* Convert picture to ARGB8888 pixel format */
00992   for(index=0; index < height; index++)
00993   {
00994     /* Pixel format conversion */
00995     LL_ConvertLineToARGB8888((uint32_t *)buffer, (uint32_t *)address, width, input_color_mode);
00996  
00997     /* Increment the source and destination buffers */
00998     address+=  (BSP_LCD_GetXSize()*4);
00999     buffer -= width*(bit_pixel/8);
01000   }
01001   free (buffer); 
01002 }
01003  
01004 
01005 /**
01006   * @brief  Draws a full rectangle.
01007   * @param  Xpos: X position
01008   * @param  Ypos: Y position
01009   * @param  Width: Rectangle width  
01010   * @param  Height: Rectangle height
01011   * @retval None
01012   */
01013 void BSP_LCD_FillRect(uint16_t Xpos, uint16_t Ypos, uint16_t Width, uint16_t Height)
01014 {
01015   uint32_t  x_address = 0;
01016   
01017   /* Set the text color */
01018   BSP_LCD_SetTextColor(DrawProp[ActiveLayer].TextColor);
01019   
01020   /* Get the rectangle start address */
01021   if(hLtdcHandler.LayerCfg[ActiveLayer].PixelFormat == LTDC_PIXEL_FORMAT_RGB565)
01022   { /* RGB565 format */
01023     x_address = (hLtdcHandler.LayerCfg[ActiveLayer].FBStartAdress) + 2*(BSP_LCD_GetXSize()*Ypos + Xpos);
01024   }
01025   else
01026   { /* ARGB8888 format */
01027     x_address = (hLtdcHandler.LayerCfg[ActiveLayer].FBStartAdress) + 4*(BSP_LCD_GetXSize()*Ypos + Xpos);
01028   }
01029   /* Fill the rectangle */
01030   LL_FillBuffer(ActiveLayer, (uint32_t *)x_address, Width, Height, (BSP_LCD_GetXSize() - Width), DrawProp[ActiveLayer].TextColor);
01031 }
01032 
01033 /**
01034   * @brief  Draws a full circle.
01035   * @param  Xpos: X position
01036   * @param  Ypos: Y position
01037   * @param  Radius: Circle radius
01038   * @retval None
01039   */
01040 void BSP_LCD_FillCircle(uint16_t Xpos, uint16_t Ypos, uint16_t Radius)
01041 {
01042   int32_t  decision;     /* Decision Variable */ 
01043   uint32_t  current_x;   /* Current X Value */
01044   uint32_t  current_y;   /* Current Y Value */
01045   
01046   decision = 3 - (Radius << 1);
01047   
01048   current_x = 0;
01049   current_y = Radius;
01050   
01051   BSP_LCD_SetTextColor(DrawProp[ActiveLayer].TextColor);
01052   
01053   while (current_x <= current_y)
01054   {
01055     if(current_y > 0) 
01056     {
01057       BSP_LCD_DrawHLine(Xpos - current_y, Ypos + current_x, 2*current_y);
01058       BSP_LCD_DrawHLine(Xpos - current_y, Ypos - current_x, 2*current_y);
01059     }
01060     
01061     if(current_x > 0) 
01062     {
01063       BSP_LCD_DrawHLine(Xpos - current_x, Ypos - current_y, 2*current_x);
01064       BSP_LCD_DrawHLine(Xpos - current_x, Ypos + current_y, 2*current_x);
01065     }
01066     if (decision < 0)
01067     { 
01068       decision += (current_x << 2) + 6;
01069     }
01070     else
01071     {
01072       decision += ((current_x - current_y) << 2) + 10;
01073       current_y--;
01074     }
01075     current_x++;
01076   }
01077   
01078   BSP_LCD_SetTextColor(DrawProp[ActiveLayer].TextColor);
01079   BSP_LCD_DrawCircle(Xpos, Ypos, Radius);
01080 }
01081 
01082 /**
01083   * @brief  Draws a full poly-line (between many points).
01084   * @param  Points: Pointer to the points array
01085   * @param  PointCount: Number of points
01086   * @retval None
01087   */
01088 void BSP_LCD_FillPolygon(pPoint Points, uint16_t PointCount)
01089 {
01090   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;
01091   uint16_t  image_left = 0, image_right = 0, image_top = 0, image_bottom = 0;
01092   
01093   image_left = image_right = Points->X;
01094   image_top= image_bottom = Points->Y;
01095   
01096   for(counter = 1; counter < PointCount; counter++)
01097   {
01098     pixelX = POLY_X(counter);
01099     if(pixelX < image_left)
01100     {
01101       image_left = pixelX;
01102     }
01103     if(pixelX > image_right)
01104     {
01105       image_right = pixelX;
01106     }
01107     
01108     pixelY = POLY_Y(counter);
01109     if(pixelY < image_top)
01110     { 
01111       image_top = pixelY;
01112     }
01113     if(pixelY > image_bottom)
01114     {
01115       image_bottom = pixelY;
01116     }
01117   }  
01118   
01119   if(PointCount < 2)
01120   {
01121     return;
01122   }
01123   
01124   X_center = (image_left + image_right)/2;
01125   Y_center = (image_bottom + image_top)/2;
01126   
01127   X_first = Points->X;
01128   Y_first = Points->Y;
01129   
01130   while(--PointCount)
01131   {
01132     X = Points->X;
01133     Y = Points->Y;
01134     Points++;
01135     X2 = Points->X;
01136     Y2 = Points->Y;    
01137     
01138     FillTriangle(X, X2, X_center, Y, Y2, Y_center);
01139     FillTriangle(X, X_center, X2, Y, Y_center, Y2);
01140     FillTriangle(X_center, X2, X, Y_center, Y2, Y);   
01141   }
01142   
01143   FillTriangle(X_first, X2, X_center, Y_first, Y2, Y_center);
01144   FillTriangle(X_first, X_center, X2, Y_first, Y_center, Y2);
01145   FillTriangle(X_center, X2, X_first, Y_center, Y2, Y_first);   
01146 }
01147 
01148 /**
01149   * @brief  Draws a full ellipse.
01150   * @param  Xpos: X position
01151   * @param  Ypos: Y position
01152   * @param  XRadius: Ellipse X radius
01153   * @param  YRadius: Ellipse Y radius  
01154   * @retval None
01155   */
01156 void BSP_LCD_FillEllipse(int Xpos, int Ypos, int XRadius, int YRadius)
01157 {
01158   int x = 0, y = -YRadius, err = 2-2*XRadius, e2;
01159   float k = 0, rad1 = 0, rad2 = 0;
01160   
01161   rad1 = XRadius;
01162   rad2 = YRadius;
01163   
01164   k = (float)(rad2/rad1);
01165   
01166   do 
01167   {       
01168     BSP_LCD_DrawHLine((Xpos-(uint16_t)(x/k)), (Ypos+y), (2*(uint16_t)(x/k) + 1));
01169     BSP_LCD_DrawHLine((Xpos-(uint16_t)(x/k)), (Ypos-y), (2*(uint16_t)(x/k) + 1));
01170     
01171     e2 = err;
01172     if (e2 <= x) 
01173     {
01174       err += ++x*2+1;
01175       if (-y == x && e2 <= y) e2 = 0;
01176     }
01177     if (e2 > y) err += ++y*2+1;
01178   }
01179   while (y <= 0);
01180 }
01181 
01182 /**
01183   * @brief  Enables the display.
01184   * @retval None
01185   */
01186 void BSP_LCD_DisplayOn(void)
01187 {
01188   /* Display On */
01189   __HAL_LTDC_ENABLE(&hLtdcHandler);
01190   HAL_GPIO_WritePin(LCD_DISP_GPIO_PORT, LCD_DISP_PIN, GPIO_PIN_SET);        /* Assert LCD_DISP pin */
01191   HAL_GPIO_WritePin(LCD_BL_CTRL_GPIO_PORT, LCD_BL_CTRL_PIN, GPIO_PIN_SET);  /* Assert LCD_BL_CTRL pin */
01192 }
01193 
01194 /**
01195   * @brief  Disables the display.
01196   * @retval None
01197   */
01198 void BSP_LCD_DisplayOff(void)
01199 {
01200   /* Display Off */
01201   __HAL_LTDC_DISABLE(&hLtdcHandler);
01202   HAL_GPIO_WritePin(LCD_DISP_GPIO_PORT, LCD_DISP_PIN, GPIO_PIN_RESET);      /* De-assert LCD_DISP pin */
01203   HAL_GPIO_WritePin(LCD_BL_CTRL_GPIO_PORT, LCD_BL_CTRL_PIN, GPIO_PIN_RESET);/* De-assert LCD_BL_CTRL pin */
01204 }
01205 
01206 /**
01207   * @brief  Initializes the LTDC MSP.
01208   * @param  hltdc: LTDC handle
01209   * @param  Params
01210   * @retval None
01211   */
01212 __weak void BSP_LCD_MspInit(LTDC_HandleTypeDef *hltdc, void *Params)
01213 {
01214   GPIO_InitTypeDef gpio_init_structure;
01215   
01216   /* Enable the LTDC and DMA2D clocks */
01217   __HAL_RCC_LTDC_CLK_ENABLE();
01218   __HAL_RCC_DMA2D_CLK_ENABLE();
01219   
01220   /* Enable GPIOs clock */
01221   __HAL_RCC_GPIOE_CLK_ENABLE();
01222   __HAL_RCC_GPIOG_CLK_ENABLE();
01223   __HAL_RCC_GPIOI_CLK_ENABLE();
01224   __HAL_RCC_GPIOJ_CLK_ENABLE();
01225   __HAL_RCC_GPIOK_CLK_ENABLE();
01226   LCD_DISP_GPIO_CLK_ENABLE();
01227   LCD_BL_CTRL_GPIO_CLK_ENABLE();
01228 
01229   /*** LTDC Pins configuration ***/
01230   /* GPIOE configuration */
01231   gpio_init_structure.Pin       = GPIO_PIN_4;
01232   gpio_init_structure.Mode      = GPIO_MODE_AF_PP;
01233   gpio_init_structure.Pull      = GPIO_NOPULL;
01234   gpio_init_structure.Speed     = GPIO_SPEED_FAST;
01235   gpio_init_structure.Alternate = GPIO_AF14_LTDC;  
01236   HAL_GPIO_Init(GPIOE, &gpio_init_structure);
01237 
01238   /* GPIOG configuration */
01239   gpio_init_structure.Pin       = GPIO_PIN_12;
01240   gpio_init_structure.Mode      = GPIO_MODE_AF_PP;
01241   gpio_init_structure.Alternate = GPIO_AF9_LTDC;
01242   HAL_GPIO_Init(GPIOG, &gpio_init_structure);
01243 
01244   /* GPIOI LTDC alternate configuration */
01245   gpio_init_structure.Pin       = GPIO_PIN_8 | GPIO_PIN_9 | GPIO_PIN_10 | \
01246                                   GPIO_PIN_13 | GPIO_PIN_14 | GPIO_PIN_15;
01247   gpio_init_structure.Mode      = GPIO_MODE_AF_PP;
01248   gpio_init_structure.Alternate = GPIO_AF14_LTDC;
01249   HAL_GPIO_Init(GPIOI, &gpio_init_structure);
01250 
01251   /* GPIOJ configuration */  
01252   gpio_init_structure.Pin       = GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_2 | GPIO_PIN_3 | \
01253                                   GPIO_PIN_4 | GPIO_PIN_5 | GPIO_PIN_6 | GPIO_PIN_7 | \
01254                                   GPIO_PIN_8 | GPIO_PIN_9 | GPIO_PIN_10 | GPIO_PIN_11 | \
01255                                   GPIO_PIN_13 | GPIO_PIN_14 | GPIO_PIN_15;
01256   gpio_init_structure.Mode      = GPIO_MODE_AF_PP;
01257   gpio_init_structure.Alternate = GPIO_AF14_LTDC;
01258   HAL_GPIO_Init(GPIOJ, &gpio_init_structure);  
01259 
01260   /* GPIOK configuration */  
01261   gpio_init_structure.Pin       = GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_2 | GPIO_PIN_4 | \
01262                                   GPIO_PIN_5 | GPIO_PIN_6 | GPIO_PIN_7;
01263   gpio_init_structure.Mode      = GPIO_MODE_AF_PP;
01264   gpio_init_structure.Alternate = GPIO_AF14_LTDC;
01265   HAL_GPIO_Init(GPIOK, &gpio_init_structure);
01266 
01267   /* LCD_DISP GPIO configuration */
01268   gpio_init_structure.Pin       = LCD_DISP_PIN;     /* LCD_DISP pin has to be manually controlled */
01269   gpio_init_structure.Mode      = GPIO_MODE_OUTPUT_PP;
01270   HAL_GPIO_Init(LCD_DISP_GPIO_PORT, &gpio_init_structure);
01271 
01272   /* LCD_BL_CTRL GPIO configuration */
01273   gpio_init_structure.Pin       = LCD_BL_CTRL_PIN;  /* LCD_BL_CTRL pin has to be manually controlled */
01274   gpio_init_structure.Mode      = GPIO_MODE_OUTPUT_PP;
01275   HAL_GPIO_Init(LCD_BL_CTRL_GPIO_PORT, &gpio_init_structure);
01276 }
01277 
01278 /**
01279   * @brief  DeInitializes BSP_LCD MSP.
01280   * @param  hltdc: LTDC handle
01281   * @param  Params
01282   * @retval None
01283   */
01284 __weak void BSP_LCD_MspDeInit(LTDC_HandleTypeDef *hltdc, void *Params)
01285 {
01286   GPIO_InitTypeDef  gpio_init_structure;
01287 
01288   /* Disable LTDC block */
01289   __HAL_LTDC_DISABLE(hltdc);
01290 
01291   /* LTDC Pins deactivation */
01292 
01293   /* GPIOE deactivation */
01294   gpio_init_structure.Pin       = GPIO_PIN_4;
01295   HAL_GPIO_DeInit(GPIOE, gpio_init_structure.Pin);
01296 
01297   /* GPIOG deactivation */
01298   gpio_init_structure.Pin       = GPIO_PIN_12;
01299   HAL_GPIO_DeInit(GPIOG, gpio_init_structure.Pin);
01300 
01301   /* GPIOI deactivation */
01302   gpio_init_structure.Pin       = GPIO_PIN_8 | GPIO_PIN_9 | GPIO_PIN_10 | GPIO_PIN_12 | \
01303                                   GPIO_PIN_13 | GPIO_PIN_14 | GPIO_PIN_15;
01304   HAL_GPIO_DeInit(GPIOI, gpio_init_structure.Pin);
01305 
01306   /* GPIOJ deactivation */
01307   gpio_init_structure.Pin       = GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_2 | GPIO_PIN_3 | \
01308                                   GPIO_PIN_4 | GPIO_PIN_5 | GPIO_PIN_6 | GPIO_PIN_7 | \
01309                                   GPIO_PIN_8 | GPIO_PIN_9 | GPIO_PIN_10 | GPIO_PIN_11 | \
01310                                   GPIO_PIN_13 | GPIO_PIN_14 | GPIO_PIN_15;
01311   HAL_GPIO_DeInit(GPIOJ, gpio_init_structure.Pin);
01312 
01313   /* GPIOK deactivation */
01314   gpio_init_structure.Pin       = GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_2 | GPIO_PIN_4 | \
01315                                   GPIO_PIN_5 | GPIO_PIN_6 | GPIO_PIN_7;
01316   HAL_GPIO_DeInit(GPIOK, gpio_init_structure.Pin);
01317 
01318   /* Disable LTDC clock */
01319   __HAL_RCC_LTDC_CLK_DISABLE();
01320 
01321   /* GPIO pins clock can be shut down in the application
01322      by surcharging this __weak function */
01323 }
01324 
01325 /**
01326   * @brief  Clock Config.
01327   * @param  hltdc: LTDC handle
01328   * @param  Params
01329   * @note   This API is called by BSP_LCD_Init()
01330   *         Being __weak it can be overwritten by the application
01331   * @retval None
01332   */
01333 __weak void BSP_LCD_ClockConfig(LTDC_HandleTypeDef *hltdc, void *Params)
01334 {
01335   static RCC_PeriphCLKInitTypeDef  periph_clk_init_struct;
01336 
01337   /* RK043FN48H LCD clock configuration */
01338   /* PLLSAI_VCO Input = HSE_VALUE/PLL_M = 1 Mhz */
01339   /* PLLSAI_VCO Output = PLLSAI_VCO Input * PLLSAIN = 192 Mhz */
01340   /* PLLLCDCLK = PLLSAI_VCO Output/PLLSAIR = 192/5 = 38.4 Mhz */
01341   /* LTDC clock frequency = PLLLCDCLK / LTDC_PLLSAI_DIVR_4 = 38.4/4 = 9.6Mhz */
01342   periph_clk_init_struct.PeriphClockSelection = RCC_PERIPHCLK_LTDC;
01343   periph_clk_init_struct.PLLSAI.PLLSAIN = 192;
01344   periph_clk_init_struct.PLLSAI.PLLSAIR = RK043FN48H_FREQUENCY_DIVIDER;
01345   periph_clk_init_struct.PLLSAIDivR = RCC_PLLSAIDIVR_4;
01346   HAL_RCCEx_PeriphCLKConfig(&periph_clk_init_struct);
01347 }
01348 
01349 
01350 /*******************************************************************************
01351                             Static Functions
01352 *******************************************************************************/
01353 
01354 /**
01355   * @brief  Draws a character on LCD.
01356   * @param  Xpos: Line where to display the character shape
01357   * @param  Ypos: Start column address
01358   * @param  c: Pointer to the character data
01359   * @retval None
01360   */
01361 static void DrawChar(uint16_t Xpos, uint16_t Ypos, const uint8_t *c)
01362 {
01363   uint32_t i = 0, j = 0;
01364   uint16_t height, width;
01365   uint8_t  offset;
01366   uint8_t  *pchar;
01367   uint32_t line;
01368   
01369   height = DrawProp[ActiveLayer].pFont->Height;
01370   width  = DrawProp[ActiveLayer].pFont->Width;
01371   
01372   offset =  8 *((width + 7)/8) -  width ;
01373   
01374   for(i = 0; i < height; i++)
01375   {
01376     pchar = ((uint8_t *)c + (width + 7)/8 * i);
01377     
01378     switch(((width + 7)/8))
01379     {
01380       
01381     case 1:
01382       line =  pchar[0];      
01383       break;
01384       
01385     case 2:
01386       line =  (pchar[0]<< 8) | pchar[1];      
01387       break;
01388       
01389     case 3:
01390     default:
01391       line =  (pchar[0]<< 16) | (pchar[1]<< 8) | pchar[2];      
01392       break;
01393     } 
01394     
01395     for (j = 0; j < width; j++)
01396     {
01397       if(line & (1 << (width- j + offset- 1))) 
01398       {
01399         BSP_LCD_DrawPixel((Xpos + j), Ypos, DrawProp[ActiveLayer].TextColor);
01400       }
01401       else
01402       {
01403         BSP_LCD_DrawPixel((Xpos + j), Ypos, DrawProp[ActiveLayer].BackColor);
01404       } 
01405     }
01406     Ypos++;
01407   }
01408 }
01409 
01410 /**
01411   * @brief  Fills a triangle (between 3 points).
01412   * @param  x1: Point 1 X position
01413   * @param  y1: Point 1 Y position
01414   * @param  x2: Point 2 X position
01415   * @param  y2: Point 2 Y position
01416   * @param  x3: Point 3 X position
01417   * @param  y3: Point 3 Y position
01418   * @retval None
01419   */
01420 static void FillTriangle(uint16_t x1, uint16_t x2, uint16_t x3, uint16_t y1, uint16_t y2, uint16_t y3)
01421 { 
01422   int16_t deltax = 0, deltay = 0, x = 0, y = 0, xinc1 = 0, xinc2 = 0, 
01423   yinc1 = 0, yinc2 = 0, den = 0, num = 0, num_add = 0, num_pixels = 0,
01424   curpixel = 0;
01425   
01426   deltax = ABS(x2 - x1);        /* The difference between the x's */
01427   deltay = ABS(y2 - y1);        /* The difference between the y's */
01428   x = x1;                       /* Start x off at the first pixel */
01429   y = y1;                       /* Start y off at the first pixel */
01430   
01431   if (x2 >= x1)                 /* The x-values are increasing */
01432   {
01433     xinc1 = 1;
01434     xinc2 = 1;
01435   }
01436   else                          /* The x-values are decreasing */
01437   {
01438     xinc1 = -1;
01439     xinc2 = -1;
01440   }
01441   
01442   if (y2 >= y1)                 /* The y-values are increasing */
01443   {
01444     yinc1 = 1;
01445     yinc2 = 1;
01446   }
01447   else                          /* The y-values are decreasing */
01448   {
01449     yinc1 = -1;
01450     yinc2 = -1;
01451   }
01452   
01453   if (deltax >= deltay)         /* There is at least one x-value for every y-value */
01454   {
01455     xinc1 = 0;                  /* Don't change the x when numerator >= denominator */
01456     yinc2 = 0;                  /* Don't change the y for every iteration */
01457     den = deltax;
01458     num = deltax / 2;
01459     num_add = deltay;
01460     num_pixels = deltax;         /* There are more x-values than y-values */
01461   }
01462   else                          /* There is at least one y-value for every x-value */
01463   {
01464     xinc2 = 0;                  /* Don't change the x for every iteration */
01465     yinc1 = 0;                  /* Don't change the y when numerator >= denominator */
01466     den = deltay;
01467     num = deltay / 2;
01468     num_add = deltax;
01469     num_pixels = deltay;         /* There are more y-values than x-values */
01470   }
01471   
01472   for (curpixel = 0; curpixel <= num_pixels; curpixel++)
01473   {
01474     BSP_LCD_DrawLine(x, y, x3, y3);
01475     
01476     num += num_add;              /* Increase the numerator by the top of the fraction */
01477     if (num >= den)             /* Check if numerator >= denominator */
01478     {
01479       num -= den;               /* Calculate the new numerator value */
01480       x += xinc1;               /* Change the x as appropriate */
01481       y += yinc1;               /* Change the y as appropriate */
01482     }
01483     x += xinc2;                 /* Change the x as appropriate */
01484     y += yinc2;                 /* Change the y as appropriate */
01485   } 
01486 }
01487 
01488 /**
01489   * @brief  Fills a buffer.
01490   * @param  LayerIndex: Layer index
01491   * @param  pDst: Pointer to destination buffer
01492   * @param  xSize: Buffer width
01493   * @param  ySize: Buffer height
01494   * @param  OffLine: Offset
01495   * @param  ColorIndex: Color index
01496   * @retval None
01497   */
01498 static void LL_FillBuffer(uint32_t LayerIndex, void *pDst, uint32_t xSize, uint32_t ySize, uint32_t OffLine, uint32_t ColorIndex) 
01499 {
01500   /* Register to memory mode with ARGB8888 as color Mode */ 
01501   hDma2dHandler.Init.Mode         = DMA2D_R2M;
01502   if(hLtdcHandler.LayerCfg[ActiveLayer].PixelFormat == LTDC_PIXEL_FORMAT_RGB565)
01503   { /* RGB565 format */ 
01504     hDma2dHandler.Init.ColorMode    = DMA2D_RGB565;
01505   }
01506   else
01507   { /* ARGB8888 format */
01508     hDma2dHandler.Init.ColorMode    = DMA2D_ARGB8888;
01509   }
01510   hDma2dHandler.Init.OutputOffset = OffLine;      
01511   
01512   hDma2dHandler.Instance = DMA2D;
01513   
01514   /* DMA2D Initialization */
01515   if(HAL_DMA2D_Init(&hDma2dHandler) == HAL_OK) 
01516   {
01517     if(HAL_DMA2D_ConfigLayer(&hDma2dHandler, LayerIndex) == HAL_OK) 
01518     {
01519       if (HAL_DMA2D_Start(&hDma2dHandler, ColorIndex, (uint32_t)pDst, xSize, ySize) == HAL_OK)
01520       {
01521         /* Polling For DMA transfer */  
01522         HAL_DMA2D_PollForTransfer(&hDma2dHandler, 10);
01523       }
01524     }
01525   } 
01526 }
01527 
01528 /**
01529   * @brief  Converts a line to an ARGB8888 pixel format.
01530   * @param  pSrc: Pointer to source buffer
01531   * @param  pDst: Output color
01532   * @param  xSize: Buffer width
01533   * @param  ColorMode: Input color mode   
01534   * @retval None
01535   */
01536 static void LL_ConvertLineToARGB8888(void *pSrc, void *pDst, uint32_t xSize, uint32_t ColorMode)
01537 {    
01538   /* Configure the DMA2D Mode, Color Mode and output offset */
01539   hDma2dHandler.Init.Mode         = DMA2D_M2M_PFC;
01540   hDma2dHandler.Init.ColorMode    = DMA2D_ARGB8888;
01541   hDma2dHandler.Init.OutputOffset = 0;     
01542   
01543   /* Foreground Configuration */
01544   hDma2dHandler.LayerCfg[1].AlphaMode = DMA2D_NO_MODIF_ALPHA;
01545   hDma2dHandler.LayerCfg[1].InputAlpha = 0xFF;
01546   hDma2dHandler.LayerCfg[1].InputColorMode = ColorMode;
01547   hDma2dHandler.LayerCfg[1].InputOffset = 0;
01548   
01549   hDma2dHandler.Instance = DMA2D; 
01550   
01551   /* DMA2D Initialization */
01552   if(HAL_DMA2D_Init(&hDma2dHandler) == HAL_OK) 
01553   {
01554     if(HAL_DMA2D_ConfigLayer(&hDma2dHandler, 1) == HAL_OK) 
01555     {
01556       if (HAL_DMA2D_Start(&hDma2dHandler, (uint32_t)pSrc, (uint32_t)pDst, xSize, 1) == HAL_OK)
01557       {
01558         /* Polling For DMA transfer */  
01559         HAL_DMA2D_PollForTransfer(&hDma2dHandler, 10);
01560       }
01561     }
01562   } 
01563 }
01564 
01565 /**
01566   * @}
01567   */
01568 
01569 /**
01570   * @}
01571   */
01572   
01573 /**
01574   * @}
01575   */
01576   
01577 /**
01578   * @}
01579   */        
01580 
01581 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/