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/**
******************************************************************************
* @file stm32_adafruit_lcd.c
* @author MCD Application Team
* @brief This file includes the driver for Liquid Crystal Display (LCD) module
* mounted on the Adafruit 1.8" TFT LCD shield (reference ID 802),
* that is used with the STM32 Nucleo board through SPI interface.
******************************************************************************
* @attention
*
* Copyright (c) 2016 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.
*
******************************************************************************
*/
/* File Info : -----------------------------------------------------------------
User NOTES
1. How To use this driver:
--------------------------
- The LCD st7735 component driver MUST be included with this driver.
2. Driver description:
---------------------
+ Initialization steps:
o Initialize the LCD using the BSP_LCD_Init() function.
+ Display on LCD
o Clear the whole LCD using the 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, ..)
on LCD using a set of functions.
------------------------------------------------------------------------------*/
/* Dependencies
- st7735.c
- fonts.h
- font24.c
- font20.c
- font16.c
- font12.c
- font8.c"
EndDependencies */
/* Includes ------------------------------------------------------------------*/
#include "stm32_adafruit_lcd.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 STM32_ADAFRUIT
* @{
*/
/** @addtogroup STM32_ADAFRUIT_LCD
* @{
*/
/** @defgroup STM32_ADAFRUIT_LCD_Private_TypesDefinitions
* @{
*/
/**
* @}
*/
/** @defgroup STM32_ADAFRUIT_LCD_Private_Defines
* @{
*/
#define POLY_X(Z) ((int32_t)((Points + (Z))->X))
#define POLY_Y(Z) ((int32_t)((Points + (Z))->Y))
#define NULL (void *)0
#define MAX_HEIGHT_FONT 17
#define MAX_WIDTH_FONT 24
#define OFFSET_BITMAP 54
/**
* @}
*/
/** @defgroup STM32_ADAFRUIT_LCD_Private_Macros
* @{
*/
#define ABS(X) ((X) > 0 ? (X) : -(X))
/**
* @}
*/
/** @defgroup STM32_ADAFRUIT_LCD_Private_Variables
* @{
*/
LCD_DrawPropTypeDef DrawProp;
static LCD_DrvTypeDef *lcd_drv;
/* Max size of bitmap will based on a font24 (17x24) */
static uint8_t bitmap[MAX_HEIGHT_FONT*MAX_WIDTH_FONT*2+OFFSET_BITMAP] = {0};
/**
* @}
*/
/** @defgroup STM32_ADAFRUIT_LCD_Private_FunctionPrototypes
* @{
*/
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 SetDisplayWindow(uint16_t Xpos, uint16_t Ypos, uint16_t Width, uint16_t Height);
/**
* @}
*/
/** @defgroup STM32_ADAFRUIT_LCD_Private_Functions
* @{
*/
/**
* @brief Initializes the LCD.
* @param None
* @retval LCD state
*/
uint8_t BSP_LCD_Init(void)
{
uint8_t ret = LCD_ERROR;
/* Default value for draw propriety */
DrawProp.BackColor = 0xFFFF;
DrawProp.pFont = &Font24;
DrawProp.TextColor = 0x0000;
lcd_drv = &st7735_drv;
/* LCD Init */
lcd_drv->Init();
/* Clear the LCD screen */
BSP_LCD_Clear(LCD_COLOR_WHITE);
/* Initialize the font */
BSP_LCD_SetFont(&LCD_DEFAULT_FONT);
ret = LCD_OK;
return ret;
}
/**
* @brief Gets the LCD X size.
* @param None
* @retval Used LCD X size
*/
uint32_t BSP_LCD_GetXSize(void)
{
return(lcd_drv->GetLcdPixelWidth());
}
/**
* @brief Gets the LCD Y size.
* @param None
* @retval Used LCD Y size
*/
uint32_t BSP_LCD_GetYSize(void)
{
return(lcd_drv->GetLcdPixelHeight());
}
/**
* @brief Gets the LCD text color.
* @param None
* @retval Used text color.
*/
uint16_t BSP_LCD_GetTextColor(void)
{
return DrawProp.TextColor;
}
/**
* @brief Gets the LCD background color.
* @param None
* @retval Used background color
*/
uint16_t BSP_LCD_GetBackColor(void)
{
return DrawProp.BackColor;
}
/**
* @brief Sets the LCD text color.
* @param Color: Text color code RGB(5-6-5)
* @retval None
*/
void BSP_LCD_SetTextColor(uint16_t Color)
{
DrawProp.TextColor = Color;
}
/**
* @brief Sets the LCD background color.
* @param Color: Background color code RGB(5-6-5)
* @retval None
*/
void BSP_LCD_SetBackColor(uint16_t Color)
{
DrawProp.BackColor = Color;
}
/**
* @brief Sets the LCD text font.
* @param fonts: Font to be used
* @retval None
*/
void BSP_LCD_SetFont(sFONT *pFonts)
{
DrawProp.pFont = pFonts;
}
/**
* @brief Gets the LCD text font.
* @param None
* @retval Used font
*/
sFONT *BSP_LCD_GetFont(void)
{
return DrawProp.pFont;
}
/**
* @brief Clears the hole LCD.
* @param Color: Color of the background
* @retval None
*/
void BSP_LCD_Clear(uint16_t Color)
{
uint32_t counter = 0;
uint32_t color_backup = DrawProp.TextColor;
DrawProp.TextColor = Color;
for(counter = 0; counter < BSP_LCD_GetYSize(); counter++)
{
BSP_LCD_DrawHLine(0, counter, BSP_LCD_GetXSize());
}
DrawProp.TextColor = color_backup;
BSP_LCD_SetTextColor(DrawProp.TextColor);
}
/**
* @brief Clears the selected line.
* @param Line: Line to be cleared
* This parameter can be one of the following values:
* @arg 0..9: if the Current fonts is Font16x24
* @arg 0..19: if the Current fonts is Font12x12 or Font8x12
* @arg 0..29: if the Current fonts is Font8x8
* @retval None
*/
void BSP_LCD_ClearStringLine(uint16_t Line)
{
uint32_t color_backup = DrawProp.TextColor;
DrawProp.TextColor = DrawProp.BackColor;;
/* Draw a rectangle with background color */
BSP_LCD_FillRect(0, (Line * DrawProp.pFont->Height), BSP_LCD_GetXSize(), DrawProp.pFont->Height);
DrawProp.TextColor = color_backup;
BSP_LCD_SetTextColor(DrawProp.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.pFont->table[(Ascii-' ') *\
DrawProp.pFont->Height * ((DrawProp.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, Line_ModeTypdef Mode)
{
uint16_t refcolumn = 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.pFont->Width);
switch (Mode)
{
case CENTER_MODE:
{
refcolumn = Xpos + ((xsize - size)* DrawProp.pFont->Width) / 2;
break;
}
case LEFT_MODE:
{
refcolumn = Xpos;
break;
}
case RIGHT_MODE:
{
refcolumn = - Xpos + ((xsize - size)*DrawProp.pFont->Width);
break;
}
default:
{
refcolumn = Xpos;
break;
}
}
/* Send the string character by character on lCD */
while ((*Text != 0) && (((BSP_LCD_GetXSize() - (i*DrawProp.pFont->Width)) & 0xFFFF) >= DrawProp.pFont->Width))
{
/* Display one character on LCD */
BSP_LCD_DisplayChar(refcolumn, Ypos, *Text);
/* Decrement the column position by 16 */
refcolumn += DrawProp.pFont->Width;
/* Point on the next character */
Text++;
i++;
}
}
/**
* @brief Displays a character on the LCD.
* @param Line: Line where to display the character shape
* This parameter can be one of the following values:
* @arg 0..19: if the Current fonts is Font8
* @arg 0..12: if the Current fonts is Font12
* @arg 0...9: if the Current fonts is Font16
* @arg 0...7: if the Current fonts is Font20
* @arg 0...5: if the Current fonts is Font24
* @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 a pixel on LCD.
* @param Xpos: X position
* @param Ypos: Y position
* @param RGB_Code: Pixel color in RGB mode (5-6-5)
* @retval None
*/
void BSP_LCD_DrawPixel(uint16_t Xpos, uint16_t Ypos, uint16_t RGB_Code)
{
if(lcd_drv->WritePixel != NULL)
{
lcd_drv->WritePixel(Xpos, Ypos, RGB_Code);
}
}
/**
* @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 index = 0;
if(lcd_drv->DrawHLine != NULL)
{
lcd_drv->DrawHLine(DrawProp.TextColor, Xpos, Ypos, Length);
}
else
{
for(index = 0; index < Length; index++)
{
BSP_LCD_DrawPixel((Xpos + index), Ypos, DrawProp.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 index = 0;
if(lcd_drv->DrawVLine != NULL)
{
lcd_drv->DrawVLine(DrawProp.TextColor, Xpos, Ypos, Length);
}
else
{
for(index = 0; index < Length; index++)
{
BSP_LCD_DrawPixel(Xpos, Ypos + index, DrawProp.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, numadd = 0, numpixels = 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;
numadd = deltay;
numpixels = 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;
numadd = deltax;
numpixels = deltay; /* There are more y-values than x-values */
}
for (curpixel = 0; curpixel <= numpixels; curpixel++)
{
BSP_LCD_DrawPixel(x, y, DrawProp.TextColor); /* Draw the current pixel */
num += numadd; /* 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 D; /* Decision Variable */
uint32_t CurX; /* Current X Value */
uint32_t CurY; /* Current Y Value */
D = 3 - (Radius << 1);
CurX = 0;
CurY = Radius;
while (CurX <= CurY)
{
BSP_LCD_DrawPixel((Xpos + CurX), (Ypos - CurY), DrawProp.TextColor);
BSP_LCD_DrawPixel((Xpos - CurX), (Ypos - CurY), DrawProp.TextColor);
BSP_LCD_DrawPixel((Xpos + CurY), (Ypos - CurX), DrawProp.TextColor);
BSP_LCD_DrawPixel((Xpos - CurY), (Ypos - CurX), DrawProp.TextColor);
BSP_LCD_DrawPixel((Xpos + CurX), (Ypos + CurY), DrawProp.TextColor);
BSP_LCD_DrawPixel((Xpos - CurX), (Ypos + CurY), DrawProp.TextColor);
BSP_LCD_DrawPixel((Xpos + CurY), (Ypos + CurX), DrawProp.TextColor);
BSP_LCD_DrawPixel((Xpos - CurY), (Ypos + CurX), DrawProp.TextColor);
/* Initialize the font */
BSP_LCD_SetFont(&LCD_DEFAULT_FONT);
if (D < 0)
{
D += (CurX << 2) + 6;
}
else
{
D += ((CurX - CurY) << 2) + 10;
CurY--;
}
CurX++;
}
}
/**
* @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.TextColor);
BSP_LCD_DrawPixel((Xpos+(uint16_t)(x/K)), (Ypos+y), DrawProp.TextColor);
BSP_LCD_DrawPixel((Xpos+(uint16_t)(x/K)), (Ypos-y), DrawProp.TextColor);
BSP_LCD_DrawPixel((Xpos-(uint16_t)(x/K)), (Ypos-y), DrawProp.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 bitmap picture loaded in the STM32 MCU internal memory.
* @param Xpos: Bmp X position in the LCD
* @param Ypos: Bmp Y position in the LCD
* @param pBmp: Pointer to Bmp picture address
* @retval None
*/
void BSP_LCD_DrawBitmap(uint16_t Xpos, uint16_t Ypos, uint8_t *pBmp)
{
uint32_t height = 0;
uint32_t width = 0;
/* 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);
/* Remap Ypos, st7735 works with inverted X in case of bitmap */
/* X = 0, cursor is on Top corner */
if(lcd_drv == &st7735_drv)
{
Ypos = BSP_LCD_GetYSize() - Ypos - height;
}
SetDisplayWindow(Xpos, Ypos, width, height);
if(lcd_drv->DrawBitmap != NULL)
{
lcd_drv->DrawBitmap(Xpos, Ypos, pBmp);
}
SetDisplayWindow(0, 0, BSP_LCD_GetXSize(), BSP_LCD_GetYSize());
}
/**
* @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)
{
BSP_LCD_SetTextColor(DrawProp.TextColor);
do
{
BSP_LCD_DrawHLine(Xpos, Ypos++, Width);
}
while(Height--);
}
/**
* @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 D; /* Decision Variable */
uint32_t CurX; /* Current X Value */
uint32_t CurY; /* Current Y Value */
D = 3 - (Radius << 1);
CurX = 0;
CurY = Radius;
BSP_LCD_SetTextColor(DrawProp.TextColor);
while (CurX <= CurY)
{
if(CurY > 0)
{
BSP_LCD_DrawHLine(Xpos - CurY, Ypos + CurX, 2*CurY);
BSP_LCD_DrawHLine(Xpos - CurY, Ypos - CurX, 2*CurY);
}
if(CurX > 0)
{
BSP_LCD_DrawHLine(Xpos - CurX, Ypos - CurY, 2*CurX);
BSP_LCD_DrawHLine(Xpos - CurX, Ypos + CurY, 2*CurX);
}
if (D < 0)
{
D += (CurX << 2) + 6;
}
else
{
D += ((CurX - CurY) << 2) + 10;
CurY--;
}
CurX++;
}
BSP_LCD_SetTextColor(DrawProp.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.
* @param None
* @retval None
*/
void BSP_LCD_DisplayOn(void)
{
lcd_drv->DisplayOn();
}
/**
* @brief Disables the display.
* @param None
* @retval None
*/
void BSP_LCD_DisplayOff(void)
{
lcd_drv->DisplayOff();
}
/*******************************************************************************
Static Functions
*******************************************************************************/
/**
* @brief Draws a character on LCD.
* @param Xpos: Line where to display the character shape
* @param Ypos: Start column address
* @param pChar: Pointer to the character data
* @retval None
*/
static void DrawChar(uint16_t Xpos, uint16_t Ypos, const uint8_t *pChar)
{
uint32_t counterh = 0, counterw = 0, index = 0;
uint16_t height = 0, width = 0;
uint8_t offset = 0;
uint8_t *pchar = NULL;
uint32_t line = 0;
height = DrawProp.pFont->Height;
width = DrawProp.pFont->Width;
/* Fill bitmap header*/
*(uint16_t *) (bitmap + 2) = (uint16_t)(height*width*2+OFFSET_BITMAP);
*(uint16_t *) (bitmap + 4) = (uint16_t)((height*width*2+OFFSET_BITMAP)>>16);
*(uint16_t *) (bitmap + 10) = OFFSET_BITMAP;
*(uint16_t *) (bitmap + 18) = (uint16_t)(width);
*(uint16_t *) (bitmap + 20) = (uint16_t)((width)>>16);
*(uint16_t *) (bitmap + 22) = (uint16_t)(height);
*(uint16_t *) (bitmap + 24) = (uint16_t)((height)>>16);
offset = 8 *((width + 7)/8) - width ;
for(counterh = 0; counterh < height; counterh++)
{
pchar = ((uint8_t *)pChar + (width + 7)/8 * counterh);
if(((width + 7)/8) == 3)
{
line = (pchar[0]<< 16) | (pchar[1]<< 8) | pchar[2];
}
if(((width + 7)/8) == 2)
{
line = (pchar[0]<< 8) | pchar[1];
}
if(((width + 7)/8) == 1)
{
line = pchar[0];
}
for (counterw = 0; counterw < width; counterw++)
{
/* Image in the bitmap is written from the bottom to the top */
/* Need to invert image in the bitmap */
index = (((height-counterh-1)*width)+(counterw))*2+OFFSET_BITMAP;
if((line & (1 << (width- counterw + offset- 1))) != 0)
{
bitmap[index] = (uint8_t)DrawProp.TextColor;
bitmap[index+1] = (uint8_t)(DrawProp.TextColor >> 8);
}
else
{
bitmap[index] = (uint8_t)DrawProp.BackColor;
bitmap[index+1] = (uint8_t)(DrawProp.BackColor >> 8);
}
}
}
BSP_LCD_DrawBitmap(Xpos, Ypos, bitmap);
}
/**
* @brief Fills a triangle (between 3 points).
* @param Points: Pointer to the points array
* @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, numadd = 0, numpixels = 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;
numadd = deltay;
numpixels = 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;
numadd = deltax;
numpixels = deltay; /* There are more y-values than x-values */
}
for (curpixel = 0; curpixel <= numpixels; curpixel++)
{
BSP_LCD_DrawLine(x, y, x3, y3);
num += numadd; /* 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 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
*/
static void SetDisplayWindow(uint16_t Xpos, uint16_t Ypos, uint16_t Width, uint16_t Height)
{
if(lcd_drv->SetDisplayWindow != NULL)
{
lcd_drv->SetDisplayWindow(Xpos, Ypos, Width, Height);
}
}
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
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