See Quick Start Guide for the mono graphics service.

This library provides an interface to drawing graphics on monochrome graphical displays

The graphics drivers consists of the following:

Display driver interface (gfx_mono.h)
General graphics drawing primitives (gfx_mono_generic.h)
Display specific implementation (ex. gfx_mono_ug_2832hsweg04.h)

The generic drawing primitives is a library of functions for drawing graphics primitives such as lines, rectangles and circles. It uses other functions implemented by the display driver for drawing the primitives. The implementation of these functions can optionally be used by a display driver, but if the hardware of the display allows faster handling of any of the primitives, the display driver can implement it directly.

The display specific drivers provides an interface to the graphical display. It implements the low level communication with the display hardware, putting pixels on the display and drawing primitives such as lines, circles and rectangles. Depending on the display driver implementation, drawing the graphics primitives might be handled by the generic graphics drawing primitives rather than the display driver itself.

Examples

The following examples are available for the driver:

API Overview

Note: The functions in the library are not interrupt safe.

Modules
	Quick Start Guide(s)
	In this section you can find a list of all Quick Start guides related to the Monochrome graphical display system.

	NULL display device
	This module provides empty read/write functions to a null device (framebuffer in RAM), removing the need for an actual display or controller during testing, and enabling the use of most XMEGA boards.

	GFX Mono Font Library
	This modules provides functionality for outputting a monochrome font to a display.

	Generic monochrome graphic primitives
	This is a service providing generic implementations of graphic primitives.

	Spinner widget for monochrome graphical displays
	This module provides a spinner widget system for monochrome graphical displays.

	2832HSWEG04 graphic library abstraction
	This module is an abstraction layer between the graphic library and the 2832HSWEG04 monochrome LCD display connected to a SSD1306 LCD controller.

	Framebuffer
	This module provides read/write from and to a framebuffer in RAM.

	Menu system for monochrome graphical displays
	This module provides a simple menu system for monochrome graphical displays.

Typedefs
typedef uint8_t	gfx_coord_t

typedef uint8_t	gfx_mono_color_t

Enumerations
enum	gfx_mono_bitmap_type { GFX_MONO_BITMAP_RAM, GFX_MONO_BITMAP_PROGMEM }
	Bitmap types. More...

enum	gfx_mono_color { GFX_PIXEL_CLR = 0, GFX_PIXEL_SET = 1, GFX_PIXEL_XOR = 2 }
	Pixel operations. More...

Circle Sector Definitions
#define	GFX_OCTANT0 (1 << 0)
	Bitmask for drawing circle octant 0. More...

#define	GFX_OCTANT1 (1 << 1)
	Bitmask for drawing circle octant 1. More...

#define	GFX_OCTANT2 (1 << 2)
	Bitmask for drawing circle octant 2. More...

#define	GFX_OCTANT3 (1 << 3)
	Bitmask for drawing circle octant 3. More...

#define	GFX_OCTANT4 (1 << 4)
	Bitmask for drawing circle octant 4. More...

#define	GFX_OCTANT5 (1 << 5)
	Bitmask for drawing circle octant 5. More...

#define	GFX_OCTANT6 (1 << 6)
	Bitmask for drawing circle octant 6. More...

#define	GFX_OCTANT7 (1 << 7)
	Bitmask for drawing circle octant 7. More...

#define	GFX_QUADRANT0 (GFX_OCTANT0 \| GFX_OCTANT1)
	Bitmask for drawing circle quadrant 0. More...

#define	GFX_QUADRANT1 (GFX_OCTANT2 \| GFX_OCTANT3)
	Bitmask for drawing circle quadrant 1. More...

#define	GFX_QUADRANT2 (GFX_OCTANT4 \| GFX_OCTANT5)
	Bitmask for drawing circle quadrant 2. More...

#define	GFX_QUADRANT3 (GFX_OCTANT6 \| GFX_OCTANT7)
	Bitmask for drawing circle quadrant 3. More...

#define	GFX_LEFTHALF (GFX_QUADRANT3 \| GFX_QUADRANT0)
	Bitmask for drawing left half of circle. More...

#define	GFX_TOPHALF (GFX_QUADRANT0 \| GFX_QUADRANT1)
	Bitmask for drawing top half of circle. More...

#define	GFX_RIGHTHALF (GFX_QUADRANT1 \| GFX_QUADRANT2)
	Bitmask for drawing right half of circle. More...

#define	GFX_BOTTOMHALF (GFX_QUADRANT2 \| GFX_QUADRANT3)
	Bitmask for drawing bottom half of circle. More...

#define	GFX_WHOLE 0xFF
	Bitmask for drawing whole circle. More...