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stm32l4p5g_discovery_lcd.c
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/**
******************************************************************************
* @file stm32l4p5g_discovery_lcd.c
* @author MCD Application Team
* @brief This file includes the driver for Liquid Crystal Display (LCD) module
* mounted on STM32L4P5G_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 LPM012M503A 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
*
* Copyright (c) 2019 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32l4p5g_discovery_lcd.h"
#include "stm32l4p5g_discovery_io.h"
#include "../../../Utilities/Fonts/fonts.h"
#include "../../../Utilities/Fonts/font24.c"
#include "../../../Utilities/Fonts/font20.c"
#include "../../../Utilities/Fonts/font16.c"
#include "../../../Utilities/Fonts/font12.c"
#include "../../../Utilities/Fonts/font8.c"
/** @addtogroup BSP
* @{
*/
/** @addtogroup STM32L4P5G_DISCOVERY
* @{
*/
/** @defgroup STM32L4P5G_DISCOVERY_LCD STM32L4P5G_DISCOVERY LCD
* @{
*/
/** @defgroup LPM012M503A_Exported_Constants
* @{
*/
#define RTC_ASYNCH_PREDIV 0x7F /* LSE */
#define RTC_SYNCH_PREDIV 0xFF /* LSE */
/** @defgroup STM32L4P5G_DISCOVERY_RGB_LCD_Private_Defines Private Defines
* @{
*/
#define POLY_X(Z) ((int32_t)((Points + Z)->X))
#define POLY_Y(Z) ((int32_t)((Points + Z)->Y))
/**
* @}
*/
/** @defgroup STM32L4P5G_DISCOVERY_RGB_LCD_Private_Macros Private Macros
* @{
*/
#define ABS(X) ((X) > 0 ? (X) : -(X))
/**
* @}
*/
/** @defgroup STM32L4P5G_DISCOVERY_RGB_LCD_Exported_Variables Exported Variables
* @{
*/
/* DMA2D handle */
DMA2D_HandleTypeDef hdma2d_disco;
/**
* @}
*/
/** @defgroup STM32L4P5G_DISCOVERY_RGB_LCD_Private_Variables Private Variables
* @{
*/
/* LTDC handle */
LTDC_HandleTypeDef hltdc_disco;
RTC_HandleTypeDef RtcHandle_disco;
/* Default LCD configuration with LCD Layer 1 */
static uint32_t ActiveLayer = LTDC_DEFAULT_ACTIVE_LAYER;
static LCD_DrawPropTypeDef DrawProp[LTDC_MAX_LAYER_NUMBER];
static uint8_t RTC_Config(void);
/**
* @}
*/
/** @defgroup STM32L4P5G_DISCOVERY_RGB_LCD_Private_FunctionPrototypes 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 STM32L4P5G_DISCOVERY_RGB_LCD_Exported_Functions Exported Functions
* @{
*/
/**
* @brief Initializes the LCD.
* @retval LCD state
*/
uint8_t BSP_LCD_Init(void)
{
GPIO_InitTypeDef GPIO_InitStruct;
/* GPIOs Configuration */
/* Display */
LCD_DISP_GPIO_CLK_ENABLE();
GPIO_InitStruct.Pin = LCD_DISP_PIN;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
HAL_GPIO_Init(LCD_DISP_GPIO_PORT, &GPIO_InitStruct);
/* Data Enable */
LCD_DE_GPIO_CLK_ENABLE();
GPIO_InitStruct.Pin = LCD_DE_PIN;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
HAL_GPIO_Init(LCD_DE_GPIO_PORT, &GPIO_InitStruct);
/* Backlight */
LCD_BL_CTRL_GPIO_CLK_ENABLE();
GPIO_InitStruct.Pin = LCD_BL_CTRL_PIN;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_PULLDOWN;
GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
HAL_GPIO_Init(LCD_BL_CTRL_GPIO_PORT, &GPIO_InitStruct);
/* RTC configuration */
if (RTC_Config() != LCD_OK)
{
return LCD_ERROR;
}
/* Enable Display */
BSP_LCD_DisplayOn();
/* LCD clock configuration */
if (BSP_LCD_ClockConfig() != LCD_OK)
{
return LCD_ERROR;
}
/* LTDC setting */
/* Timing Configuration */
hltdc_disco.Init.HorizontalSync = 1; // HSYNC width = 2 cycles
hltdc_disco.Init.VerticalSync = 0; // VSYNC width = 1 cycle
hltdc_disco.Init.AccumulatedHBP = 1+ 2; // HBP = 2 cycles
hltdc_disco.Init.AccumulatedVBP = 0+ 1; // VBP = 1 cycle
hltdc_disco.Init.AccumulatedActiveW = 1+2 + 240; // HA = 240 cycles
hltdc_disco.Init.AccumulatedActiveH = 0+1 + 240; // VA = 240 cycles
hltdc_disco.Init.TotalWidth = 1+2+240 + 2; // HFP = 2 cycles
hltdc_disco.Init.TotalHeigh = 0+1+240 + 2 +1; // VFP = 2 cycles + 1 Extra cycle for synchronous stop
/* Initialize the LCD pixel width and pixel height */
hltdc_disco.LayerCfg->ImageWidth = 240;
hltdc_disco.LayerCfg->ImageHeight = 240;
/* Background value */
hltdc_disco.Init.Backcolor.Blue = 0;
hltdc_disco.Init.Backcolor.Green = 0x30; // 0XC0 : Blue /
hltdc_disco.Init.Backcolor.Red = 0;
/* Polarity */
hltdc_disco.Init.HSPolarity = LTDC_HSPOLARITY_AL;
hltdc_disco.Init.VSPolarity = LTDC_VSPOLARITY_AL;
hltdc_disco.Init.DEPolarity = LTDC_DEPOLARITY_AL;
hltdc_disco.Init.PCPolarity = LTDC_PCPOLARITY_IIPC;
hltdc_disco.Instance = LTDC;
if(HAL_LTDC_GetState(&hltdc_disco) == HAL_LTDC_STATE_RESET)
{
/* Initialize the LCD Msp: this __weak function can be rewritten by the application */
BSP_LCD_MspInit(&hltdc_disco, NULL);
}
HAL_LTDC_Init(&hltdc_disco);
return LCD_OK;
}
/**
* @brief DeInitializes the LCD.
* @retval LCD state
*/
uint8_t BSP_LCD_DeInit(void)
{
/* Initialize the hltdc_disco Instance parameter */
hltdc_disco.Instance = LTDC;
/* Disable LTDC block */
__HAL_LTDC_DISABLE(&hltdc_disco);
/* DeInit the LTDC */
HAL_LTDC_DeInit(&hltdc_disco);
/* DeInit the LTDC MSP : this __weak function can be rewritten by the application */
BSP_LCD_MspDeInit(&hltdc_disco, NULL);
return LCD_OK;
}
/**
* @brief Gets the LCD X size.
* @retval Used LCD X size
*/
uint32_t BSP_LCD_GetXSize(void)
{
return hltdc_disco.LayerCfg[ActiveLayer].ImageWidth;
}
/**
* @brief Gets the LCD Y size.
* @retval Used LCD Y size
*/
uint32_t BSP_LCD_GetYSize(void)
{
return hltdc_disco.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)
{
hltdc_disco.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)
{
hltdc_disco.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(uint32_t address)
{
/* Configure the LTDC layer */
LTDC_LayerCfgTypeDef layer_cfg;
layer_cfg.WindowX0 = 0;
layer_cfg.WindowX1 = 240;
layer_cfg.WindowY0 = 0;
layer_cfg.WindowY1 = 240;
layer_cfg.PixelFormat = LTDC_PIXEL_FORMAT_RGB888;
layer_cfg.FBStartAdress = 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_CA;
layer_cfg.BlendingFactor2 = LTDC_BLENDING_FACTOR2_CA;
layer_cfg.ImageWidth = 240;
layer_cfg.ImageHeight = 240;
HAL_LTDC_ConfigLayer(&hltdc_disco, &layer_cfg, 0);
}
/**
* @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(uint32_t address)
{
/* Configure the LTDC layer */
LTDC_LayerCfgTypeDef layer_cfg;
layer_cfg.WindowX0 = 0;
layer_cfg.WindowX1 = 240;
layer_cfg.WindowY0 = 0;
layer_cfg.WindowY1 = 240;
layer_cfg.PixelFormat = LTDC_PIXEL_FORMAT_RGB565;
layer_cfg.FBStartAdress = 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_CA;
layer_cfg.BlendingFactor2 = LTDC_BLENDING_FACTOR2_CA;
layer_cfg.ImageWidth = 240;
layer_cfg.ImageHeight = 240;
HAL_LTDC_ConfigLayer(&hltdc_disco, &layer_cfg, 0);
}
/**
* @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(void)
{
GPIO_InitTypeDef GPIO_InitStruct;
/* Enable interrupt */
HAL_LTDC_ProgramLineEvent(&hltdc_disco, 244);
__HAL_LTDC_ENABLE_IT(&hltdc_disco, LTDC_IT_LI);
/* Enable the LTDC */
__HAL_LTDC_ENABLE(&hltdc_disco);
/* Enable the Pads */
/* Set pixel clock */
LCD_PIXELS_CLOCK_GPIO_CLK_ENABLE();
GPIO_InitStruct.Pin = LCD_PIXELS_CLOCK_PIN;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
GPIO_InitStruct.Alternate = GPIO_AF11_LTDC;
HAL_GPIO_Init(LCD_PIXELS_CLOCK_GPIO_PORT, &GPIO_InitStruct);
/* RGB pins */
/* PE2..3 R6..7 */
/* PE5..6 G6..7 */
/* PE7..8 B6..7 */
LCD_RGB_GPIO_CLK_ENABLE();
GPIO_InitStruct.Pin = LCD_R6_PIN | LCD_R7_PIN | LCD_G6_PIN | LCD_G7_PIN | LCD_B6_PIN | LCD_B7_PIN ;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
GPIO_InitStruct.Alternate = GPIO_AF11_LTDC;
HAL_GPIO_Init(LCD_RGB_GPIO_PORT, &GPIO_InitStruct);
/* Set HSYNC and VSYNC IOs */
LCD_HSYNC_GPIO_CLK_ENABLE();
GPIO_InitStruct.Pin = LCD_HSYNC_PIN ;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
GPIO_InitStruct.Alternate = GPIO_AF11_LTDC;
HAL_GPIO_Init(LCD_HSYNC_GPIO_PORT, &GPIO_InitStruct);
LCD_VSYNC_GPIO_CLK_ENABLE();
GPIO_InitStruct.Pin = LCD_VSYNC_PIN ;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
GPIO_InitStruct.Alternate = GPIO_AF11_LTDC;
HAL_GPIO_Init(LCD_VSYNC_GPIO_PORT, &GPIO_InitStruct);
}
/**
* @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(&hltdc_disco, LayerIndex);
}
else
{
__HAL_LTDC_LAYER_DISABLE(&hltdc_disco, LayerIndex);
}
/* Do not set 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(&hltdc_disco, 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(&hltdc_disco, 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(&hltdc_disco, 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(&hltdc_disco, 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(&hltdc_disco, Width, Height, LayerIndex);
/* Reconfigure the layer position */
HAL_LTDC_SetWindowPosition(&hltdc_disco, 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(&hltdc_disco, Width, Height, LayerIndex);
/* Reconfigure the layer position */
HAL_LTDC_SetWindowPosition_NoReload(&hltdc_disco, 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(&hltdc_disco, RGBValue, LayerIndex);
HAL_LTDC_EnableColorKeying(&hltdc_disco, 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(&hltdc_disco, RGBValue, LayerIndex);
HAL_LTDC_EnableColorKeying_NoReload(&hltdc_disco, 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(&hltdc_disco, 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(&hltdc_disco, 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 (&hltdc_disco, 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(hltdc_disco.LayerCfg[ActiveLayer].PixelFormat == LTDC_PIXEL_FORMAT_ARGB8888)
{
/* Read data value from SDRAM memory */
ret = *(__IO uint32_t*) (hltdc_disco.LayerCfg[ActiveLayer].FBStartAdress + (2*(Ypos*BSP_LCD_GetXSize() + Xpos)));
}
else if(hltdc_disco.LayerCfg[ActiveLayer].PixelFormat == LTDC_PIXEL_FORMAT_RGB888)
{
/* Read data value from SDRAM memory */
ret = (*(__IO uint32_t*) (hltdc_disco.LayerCfg[ActiveLayer].FBStartAdress + (2*(Ypos*BSP_LCD_GetXSize() + Xpos))) & 0x00FFFFFF);
}
else if((hltdc_disco.LayerCfg[ActiveLayer].PixelFormat == LTDC_PIXEL_FORMAT_RGB565) || \
(hltdc_disco.LayerCfg[ActiveLayer].PixelFormat == LTDC_PIXEL_FORMAT_ARGB4444) || \
(hltdc_disco.LayerCfg[ActiveLayer].PixelFormat == LTDC_PIXEL_FORMAT_AL88))
{
/* Read data value from SDRAM memory */
ret = *(__IO uint16_t*) (hltdc_disco.LayerCfg[ActiveLayer].FBStartAdress + (2*(Ypos*BSP_LCD_GetXSize() + Xpos)));
}
else
{
/* Read data value from SDRAM memory */
ret = *(__IO uint8_t*) (hltdc_disco.LayerCfg[ActiveLayer].FBStartAdress + (2*(Ypos*BSP_LCD_GetXSize() + Xpos)));
}
return ret;
}
/**
* @brief Clears the whole LCD.
* @param Color: Color of the background
* @retval None
*/
void BSP_LCD_Clear(uint32_t Color)
{
/* Clear the LCD */
LL_FillBuffer(ActiveLayer, (uint32_t *)(hltdc_disco.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(hltdc_disco.LayerCfg[ActiveLayer].PixelFormat == LTDC_PIXEL_FORMAT_RGB565)
{ /* RGB565 format */
Xaddress = (hltdc_disco.LayerCfg[ActiveLayer].FBStartAdress) + 2*(BSP_LCD_GetXSize()*Ypos + Xpos);
}
else
{ /* RGB888 format */
Xaddress = (hltdc_disco.LayerCfg[ActiveLayer].FBStartAdress) + 3*(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(hltdc_disco.LayerCfg[ActiveLayer].PixelFormat == LTDC_PIXEL_FORMAT_RGB565)
{ /* RGB565 format */
Xaddress = (hltdc_disco.LayerCfg[ActiveLayer].FBStartAdress) + 2*(BSP_LCD_GetXSize()*Ypos + Xpos);
}
else
{ /* RGB888 format */
Xaddress = (hltdc_disco.LayerCfg[ActiveLayer].FBStartAdress) + 3*(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)