SDT028ATFT display using ILI9341 display controller

This is hardware specific configuration that configures the graphical service for use with the ILI9341 display controller and the SDT028ATFT display.

All the drawing functionality in this configuration is provided by the Generic Implementation of Graphics Primitives driver. This configuration includes information about the panel size, data type used for coordinates and color and functionality to convert RGB color to the color format native to the display.

Macros
#define	gfx_color(r, g, b)   gfx_ili9341_color(r, g, b)
	ILI9341 display driver specific function, see gfx_ili9341_color. More...
#define	gfx_copy_pixels_from_screen(pixels, count)   ili9341_copy_pixels_from_screen(pixels, count)
	ILI9341 display driver specific function, see ili9341_copy_pixels_from_screen. More...
#define	gfx_copy_pixels_to_screen(pixels, count)   ili9341_copy_pixels_to_screen(pixels, count)
	ILI9341 display driver specific function, see ili9341_copy_pixels_to_screen. More...
#define	gfx_copy_progmem_pixels_to_screen(pixels, count)   ili9341_copy_progmem_pixels_to_screen(pixels, count)
	ILI9341 display driver specific function available for ATmega and ATXmega devices, see ili9341_copy_progmem_pixels_to_screen. More...
#define	gfx_draw_bitmap(bmp, x, y)   gfx_generic_draw_bitmap(bmp, x, y)
	ILI9341 display driver uses generic gfx implementation for this function. More...
#define	gfx_draw_bitmap_tiled(bmp, x1, y1, x2, y2, tile_origin_x, tile_origin_y)
	ILI9341 display driver uses generic gfx implementation for this function. More...
#define	gfx_draw_line_pixel(x, y, color)
	ILI9341 display driver specific function, see gfx_ili9341_draw_line_pixel. More...
#define	gfx_draw_pixel(x, y, color)   gfx_ili9341_draw_pixel(x, y, color)
	ILI9341 display driver specific function, see gfx_ili9341_draw_pixel. More...
#define	gfx_duplicate_pixel(color, count)   ili9341_duplicate_pixel(color, count)
	ILI9341 display driver specific function, see ili9341_duplicate_pixel. More...
#define	gfx_get_pixel(x, y)   gfx_ili9341_get_pixel(x, y)
	ILI9341 display driver specific function, see gfx_ili9341_get_pixel. More...
#define	gfx_init()   gfx_ili9341_init()
	ILI9341 display driver specific function, see gfx_ili9341_init. More...
#define	gfx_put_bitmap(bmp, map_x, map_y, x, y, width, height)   gfx_generic_put_bitmap(bmp, map_x, map_y, x, y, width, height)
	ILI9341 display driver uses generic gfx implementation for this function. More...
#define	gfx_set_bottom_right_limit(x, y)   ili9341_set_bottom_right_limit(x, y)
	ILI9341 display driver specific function, see ili9341_set_bottom_right_limit. More...
#define	gfx_set_ext_handler(ext_draw_handler)   gfx_generic_set_ext_handler(ext_draw_handler)
	ILI9341 display driver uses generic gfx implementation for this function. More...
#define	gfx_set_limits(x1, y1, x2, y2)   ili9341_set_limits(x1, y1, x2, y2)
	ILI9341 display driver specific function, see ili9341_set_limits. More...
#define	gfx_set_orientation(flags)   gfx_ili9341_set_orientation(flags)
	ILI9341 display driver specific function, see gfx_ili9341_set_orientation. More...
#define	gfx_set_top_left_limit(x, y)   ili9341_set_top_left_limit(x, y)
	ILI9341 display driver specific function, see ili9341_set_top_left_limit. More...
#define	gfx_sync()   gfx_generic_sync()
	ILI9341 display driver uses generic gfx implementation for this function. More...

Functions
gfx_color_t	gfx_ili9341_color (uint8_t r, uint8_t g, uint8_t b)
	Generate native color value from R/G/B values. More...
void	gfx_ili9341_draw_line_pixel (gfx_coord_t x, gfx_coord_t y, gfx_color_t color)
	Draw a single pixel on the screen. More...
void	gfx_ili9341_draw_pixel (gfx_coord_t x, gfx_coord_t y, gfx_color_t color)
	Draw a single pixel on the screen. More...
gfx_color_t	gfx_ili9341_get_pixel (gfx_coord_t x, gfx_coord_t y)
	Get the color of a pixel on the display. More...
void	gfx_ili9341_init (void)
	Initialize the ili9341 display controller. More...
void	gfx_ili9341_set_orientation (uint8_t flags)
	Set display orientation. More...

Driver-specific Definitions
typedef ili9341_color_t	gfx_color_t
	Data type for color values native to the display. More...
typedef ili9341_coord_t	gfx_coord_t
	Data type representing a coordinate on the screen. More...

Graphics Drawing Primitives
#define	gfx_draw_horizontal_line(x, y, length, color)   gfx_generic_draw_horizontal_line(x, y, length, color)
	Draw a horizontal line, one pixel wide. More...
#define	gfx_draw_vertical_line(x, y, length, color)   gfx_generic_draw_vertical_line(x, y, length, color)
	Draw a vertical line, one pixel wide. More...
#define	gfx_draw_line(x1, y1, x2, y2, color)   gfx_generic_draw_line(x1, y1, x2, y2, color)
	Draw a line between two arbitrary points. More...
#define	gfx_draw_rect(x, y, width, height, color)   gfx_generic_draw_rect(x, y, width, height, color)
	Draw an outline of a rectangle. More...
#define	gfx_draw_filled_rect(x, y, width, height, color)   gfx_generic_draw_filled_rect(x, y, width, height, color)
	Draw a filled rectangle. More...
#define	gfx_draw_circle(x, y, radius, color, octant_mask)   gfx_generic_draw_circle(x, y, radius, color, octant_mask)
	Draw an outline of a circle or arc. More...
#define	gfx_draw_filled_circle(x, y, radius, color, quadrant_mask)
	Draw a filled circle or sector. More...
#define	gfx_get_pixmap(pixmap, map_width, map_x, map_y, x, y, width, height)
	Read a rectangular block of pixels from the screen into data memory. More...
#define	gfx_put_pixmap(pixmap, map_width, map_x, map_y, x, y, width, height)
	Write a rectangular block of pixels stored in data memory to the screen. More...

#define gfx_color	(		r,
			g,
			b
	)		gfx_ili9341_color(r, g, b)

ILI9341 display driver specific function, see gfx_ili9341_color.

#define gfx_copy_pixels_from_screen	(		pixels,
			count
	)		ili9341_copy_pixels_from_screen(pixels, count)

ILI9341 display driver specific function, see ili9341_copy_pixels_from_screen.

#define gfx_copy_pixels_to_screen	(		pixels,
			count
	)		ili9341_copy_pixels_to_screen(pixels, count)

ILI9341 display driver specific function, see ili9341_copy_pixels_to_screen.

#define gfx_copy_progmem_pixels_to_screen	(		pixels,
			count
	)		ili9341_copy_progmem_pixels_to_screen(pixels, count)

ILI9341 display driver specific function available for ATmega and ATXmega devices, see ili9341_copy_progmem_pixels_to_screen.

#define gfx_draw_bitmap	(		bmp,
			x,
			y
	)		gfx_generic_draw_bitmap(bmp, x, y)

ILI9341 display driver uses generic gfx implementation for this function.

See gfx_generic_draw_bitmap

#define gfx_draw_bitmap_tiled	(		bmp,
			x1,
			y1,
			x2,
			y2,
			tile_origin_x,
			tile_origin_y
	)

Value:

gfx_generic_draw_bitmap_tiled(bmp, x1, y1, x2, y2,\
        tile_origin_x, tile_origin_y)

ILI9341 display driver uses generic gfx implementation for this function.

See gfx_generic_draw_bitmap_tiled

#define gfx_draw_circle	(		x,
			y,
			radius,
			color,
			octant_mask
	)		gfx_generic_draw_circle(x, y, radius, color, octant_mask)

Draw an outline of a circle or arc.

ILI9341 display driver uses generic gfx implementation for this function.

The radius is the distance from the center to the circumference, which means that the total width or height of a circle will be (radius*2+1).

The octant_mask parameter is a bitmask that decides which octants of the circle to draw. Use the GFX_OCTANTn, GFX_QUADRANTn, GFX_xHALF and GFX_WHOLE constants and OR them together if required. Radius equal to zero gives a single pixel.

Parameters

x	X coordinate of center.
y	Y coordinate of center.
radius	Circle radius in pixels.
color	Circle color in display native format.
octant_mask	Bitmask indicating which octants to draw.

See gfx_generic_draw_circle

Referenced by main().

#define gfx_draw_filled_circle	(		x,
			y,
			radius,
			color,
			quadrant_mask
	)

Value:

gfx_generic_draw_filled_circle(x, y, radius, color,\
        quadrant_mask)

Draw a filled circle or sector.

ILI9341 display driver uses generic gfx implementation for this function.

The radius is the distance from the center to the circumference, which means that the total width or height of a circle will be (radius*2+1).

The quadrant_mask parameter is a bitmask that decides which quadrants of the circle to draw. Use the GFX_QUADRANTn, GFX_xHALF and GFX_WHOLE constants and OR them together if required. Radius equal to zero gives a single pixel.

Note

This function only supports quadrants while gfx_draw_circle() supports octants. This is to improve performance on drawing filled circles.

Parameters

x	X coordinate of center.
y	Y coordinate of center.
radius	Circle radius in pixels.
color	Circle color in display native format.
quadrant_mask	Bitmask indicating which quadrants to draw.

See gfx_generic_draw_filled_circle

Referenced by main().

#define gfx_draw_filled_rect	(		x,
			y,
			width,
			height,
			color
	)		gfx_generic_draw_filled_rect(x, y, width, height, color)

Draw a filled rectangle.

ILI9341 display driver uses generic gfx implementation for this function.

Parameters

x	X coordinate of the left side.
y	Y coordinate of the top side.
width	Width of the rectangle.
height	Height of the rectangle.
color	Color of the rectangle, in display native format.

See gfx_generic_draw_filled_rect

Referenced by gfx_draw_char(), gfx_generic_draw_bitmap_tiled(), gfx_generic_draw_horizontal_line(), gfx_generic_draw_vertical_line(), gfx_generic_put_bitmap(), gfx_ili9341_init(), and main().

#define gfx_draw_horizontal_line	(		x,
			y,
			length,
			color
	)		gfx_generic_draw_horizontal_line(x, y, length, color)

Draw a horizontal line, one pixel wide.

ILI9341 display driver uses generic gfx implementation for this function.

Parameters

x	X coordinate of leftmost pixel.
y	Y coordinate of the line.
length	Length of the line in pixels.
color	Color of the line, in display native format.

See gfx_generic_draw_horizontal_line

Referenced by gfx_generic_draw_rect(), and main().

#define gfx_draw_line	(		x1,
			y1,
			x2,
			y2,
			color
	)		gfx_generic_draw_line(x1, y1, x2, y2, color)

Draw a line between two arbitrary points.

ILI9341 display driver uses generic gfx implementation for this function.

Parameters

x1	Start X coordinate.
y1	Start Y coordinate.
x2	End X coordinate.
y2	End Y coordinate.
color	Color of the line, in display native format.

See gfx_generic_draw_line

Referenced by main().

#define gfx_draw_line_pixel	(		x,
			y,
			color
	)

Value:

gfx_ili9341_draw_line_pixel(x, y,\
        color)

ILI9341 display driver specific function, see gfx_ili9341_draw_line_pixel.

#define gfx_draw_pixel	(		x,
			y,
			color
	)		gfx_ili9341_draw_pixel(x, y, color)

ILI9341 display driver specific function, see gfx_ili9341_draw_pixel.

#define gfx_draw_rect	(		x,
			y,
			width,
			height,
			color
	)		gfx_generic_draw_rect(x, y, width, height, color)

Draw an outline of a rectangle.

ILI9341 display driver uses generic gfx implementation for this function.

Parameters

x	X coordinate of the left side.
y	Y coordinate of the top side.
width	Width of the rectangle.
height	Height of the rectangle.
color	Color of the rectangle, in display native format.

See gfx_generic_draw_rect

Referenced by main().

#define gfx_draw_vertical_line	(		x,
			y,
			length,
			color
	)		gfx_generic_draw_vertical_line(x, y, length, color)

Draw a vertical line, one pixel wide.

ILI9341 display driver uses generic gfx implementation for this function.

Parameters

x	X coordinate of the line.
y	Y coordinate of the topmost pixel.
length	Length of the line in pixels.
color	Color of the line, in display native format.

See gfx_generic_draw_vertical_line

Referenced by gfx_generic_draw_filled_circle(), gfx_generic_draw_rect(), and main().

#define gfx_duplicate_pixel	(		color,
			count
	)		ili9341_duplicate_pixel(color, count)

ILI9341 display driver specific function, see ili9341_duplicate_pixel.

#define gfx_get_pixel	(		x,
			y
	)		gfx_ili9341_get_pixel(x, y)

ILI9341 display driver specific function, see gfx_ili9341_get_pixel.

#define gfx_get_pixmap	(		pixmap,
			map_width,
			map_x,
			map_y,
			x,
			y,
			width,
			height
	)

Value:

gfx_generic_get_pixmap(pixmap, map_width, map_x, map_y, x, y,\
        width, height)

Read a rectangular block of pixels from the screen into data memory.

ILI9341 display driver uses generic gfx implementation for this function.

If the area to read is outside the clipping region, those pixels will not be read, and the corresponding data memory will be left untouched. Note that this function fails if width or height is negative or the pixel rectangle is outside the pixmap buffer extents. Clipping is only performed on the screen, not inside the pixmap buffer itself. Note that there is no checking if the pixel rectangle exceeds the bottom of the pixmap buffer.

Parameters

pixmap	Pointer to pixel buffer in data memory.
map_width	Width of the pixel buffer.
map_x	X coordinate inside pixel buffer.
map_y	Y coordinate inside pixel buffer.
x	X coordinate on screen.
y	Y coordinate on screen.
width	Width of pixel rectangle to copy.
height	Height of pixel rectangle to copy.

See gfx_generic_get_pixmap

#define gfx_init

(

)

gfx_ili9341_init()

ILI9341 display driver specific function, see gfx_ili9341_init.

Referenced by main().

#define gfx_put_bitmap	(		bmp,
			map_x,
			map_y,
			x,
			y,
			width,
			height
	)		gfx_generic_put_bitmap(bmp, map_x, map_y, x, y, width, height)

ILI9341 display driver uses generic gfx implementation for this function.

See gfx_generic_put_bitmap

#define gfx_put_pixmap	(		pixmap,
			map_width,
			map_x,
			map_y,
			x,
			y,
			width,
			height
	)

Value:

gfx_generic_put_pixmap(pixmap, map_width, map_x, map_y, x, y,\
        width, height)

Write a rectangular block of pixels stored in data memory to the screen.

ILI9341 display driver uses generic gfx implementation for this function.

If the area to write is outside the clipping region, those pixels will not be written. Note that this function fails if the width or height is negative or the pixel rectangle is outside the pixmap buffer extents. Clipping is only performed on the screen, not inside the pixmap buffer itself. Note that there is no checking if the pixel rectangle exceeds the bottom of the pixmap buffer.

Parameters

pixmap	Pointer to pixel buffer in data memory.
map_width	Width of the pixel buffer.
map_x	X coordinate inside pixel buffer.
map_y	Y coordinate inside pixel buffer.
x	X coordinate on screen.
y	Y coordinate on screen.
width	Width of pixel rectangle to copy.
height	Height of pixel rectangle to copy.

See gfx_generic_put_pixmap

#define gfx_set_bottom_right_limit	(		x,
			y
	)		ili9341_set_bottom_right_limit(x, y)

ILI9341 display driver specific function, see ili9341_set_bottom_right_limit.

#define gfx_set_ext_handler

(

ext_draw_handler

)

gfx_generic_set_ext_handler(ext_draw_handler)

ILI9341 display driver uses generic gfx implementation for this function.

See gfx_generic_set_ext_handler

#define gfx_set_limits	(		x1,
			y1,
			x2,
			y2
	)		ili9341_set_limits(x1, y1, x2, y2)

ILI9341 display driver specific function, see ili9341_set_limits.

#define gfx_set_orientation

(

flags

)

gfx_ili9341_set_orientation(flags)

ILI9341 display driver specific function, see gfx_ili9341_set_orientation.

#define gfx_set_top_left_limit	(		x,
			y
	)		ili9341_set_top_left_limit(x, y)

ILI9341 display driver specific function, see ili9341_set_top_left_limit.

#define gfx_sync

(

void

)

gfx_generic_sync()

ILI9341 display driver uses generic gfx implementation for this function.

See gfx_generic_sync

gfx_color_t

Data type for color values native to the display.

gfx_coord_t

Data type representing a coordinate on the screen.

gfx_color_t gfx_ili9341_color	(	uint8_t	r,
		uint8_t	g,
		uint8_t	b
	)

Generate native color value from R/G/B values.

Converts 8-bit R/G/B values to a color value native to the display.

The macro GFX_COLOR does the same, only allows the preprocessor to handle the calculations.

Parameters

r	8-bit red value.
g	8-bit green value.
b	8-bit blue value.

Returns

Color value in display native format.

References GFX_COLOR.

void gfx_ili9341_draw_line_pixel	(	gfx_coord_t	x,
		gfx_coord_t	y,
		gfx_color_t	color
	)

Draw a single pixel on the screen.

This function draws a single pixel on screen only setting top limit which makes it more suitable for line drawing. If outside the clipping region, nothing is drawn.

Parameters

x	X coordinate of the pixel to be drawn.
y	Y coordinate of the pixel to be drawn.
color	Color value of the pixel in display native format.

References gfx_max_x, gfx_max_y, gfx_min_x, gfx_min_y, gfx_set_top_left_limit(), and ili9341_write_gram().

void gfx_ili9341_draw_pixel	(	gfx_coord_t	x,
		gfx_coord_t	y,
		gfx_color_t	color
	)

Draw a single pixel on the screen.

Draw a single pixel on screen setting top and bottom limits. If outside the clipping region, nothing is drawn.

Parameters

x	X coordinate of the pixel to be drawn.
y	Y coordinate of the pixel to be drawn.
color	Color value of the pixel in display native format.

References gfx_max_x, gfx_max_y, gfx_min_x, gfx_min_y, gfx_set_limits(), and ili9341_write_gram().

gfx_color_t gfx_ili9341_get_pixel	(	gfx_coord_t	x,
		gfx_coord_t	y
	)

Get the color of a pixel on the display.

Parameters

x	X coordinate of the pixel to be sampled.
y	Y coordinate of the pixel to be sampled.

Returns

Color value of the pixel at (x, y) in display native format, or GFX_COLOR_INVALID if outside the clipping region.

References gfx_bitmap::color, GFX_COLOR_INVALID, gfx_max_x, gfx_max_y, gfx_min_x, gfx_min_y, gfx_set_limits(), and ili9341_read_gram().

void gfx_ili9341_init

(

void

)

Initialize the ili9341 display controller.

This function will be called when calling gfx_init. It will draw a black background to the display and enable the display backlight if available.

References GFX_COLOR_BLACK, gfx_draw_filled_rect, gfx_height, gfx_set_clipping(), gfx_width, ili9341_backlight_on(), ILI9341_DEFAULT_HEIGHT, ILI9341_DEFAULT_WIDTH, and ili9341_init().

void gfx_ili9341_set_orientation

(

uint8_t

flags

)

Set display orientation.

Set the display orientation

Parameters

flags

References gfx_height, gfx_set_clipping(), GFX_SWITCH_XY, gfx_width, ILI9341_DEFAULT_HEIGHT, ILI9341_DEFAULT_WIDTH, ili9341_set_orientation(), ILI9341_SWITCH_XY_HEIGHT, and ILI9341_SWITCH_XY_WIDTH.