Low-level driver for the ILI93XX LCD controller.

This is a driver for LCD with ili93xx.

This driver provides access to the main features of the ILI93XX controller. Now ILI9325 and ILI9341 are supported.

Now this driver supports ili9325 and ili9341.This component is custom LCD used for SAM4E-EK. The driver provides functions for initializtion and control of the LCD.

See Quick Start Guide for the ILI93XX.

Modules
	Quick Start Guide(s)
	In this section you can find a list of all Quick Start guides related to the Display - ILI93XX Controller.

Data Structures
struct	ili93xx_font
	Font structure. More...

struct	ili93xx_opt_t
	Input parameters when initializing ili9325 driver. More...

Macros
#define	COLOR_AZUR (0xF0FFFFu)

#define	COLOR_BEIGE (0xF5F5DCu)

#define	COLOR_BLACK (0x000000u)
	Define EBI access for ILI93xx 8-bit System Interface. More...

#define	COLOR_BLUE (0x0000FFu)

#define	COLOR_BLUEVIOLET (0x8A2BE2u)

#define	COLOR_BROWN (0xA52A2Au)

#define	COLOR_CYAN (0x00FFFFu)

#define	COLOR_DARKBLUE (0x00008Bu)

#define	COLOR_DARKCYAN (0x008B8Bu)

#define	COLOR_DARKGRAY (0xA9A9A9u)

#define	COLOR_DARKGREEN (0x006400u)

#define	COLOR_DARKRED (0x800000u)

#define	COLOR_DARKVIOLET (0x9400D3u)

#define	COLOR_GOLD (0xFFD700u)

#define	COLOR_GRAY (0x808080u)

#define	COLOR_GREEN (0x00FF00u)

#define	COLOR_GREENYELLOW (0xADFF2Fu)

#define	COLOR_INDIGO (0x4B0082u)

#define	COLOR_LIGHTBLUE (0xADD8E6u)

#define	COLOR_LIGHTCYAN (0xE0FFFFu)

#define	COLOR_LIGHTGREEN (0x90EE90u)

#define	COLOR_LIGHTGREY (0xD3D3D3u)

#define	COLOR_MAGENTA (0xFF00FFu)

#define	COLOR_NAVY (0x000080u)

#define	COLOR_OLIVE (0x808000u)

#define	COLOR_ORANGE (0xFFA500u)

#define	COLOR_RED (0xFF0000u)

#define	COLOR_SIENNA (0xA0522Du)

#define	COLOR_SILVER (0xC0C0C0u)

#define	COLOR_SKYBLUE (0x87CEEBu)

#define	COLOR_SNOW (0xFFFAFAu)

#define	COLOR_TOMATO (0xFF6347u)

#define	COLOR_TURQUOISE (0x40E0D0u)

#define	COLOR_VIOLET (0xEE82EEu)

#define	COLOR_WHITE (0xFFFFFFu)

#define	COLOR_YELLOW (0xFFFF00u)

#define	COLOR_YELLOWGREEN (0x9ACD32u)

#define	DEVICE_TYPE_ILI9325 1

#define	DEVICE_TYPE_ILI9341 2

#define	ILI9325_DEVICE_CODE (0x9325u)
	ili93xx ID code More...

#define	ILI9341_DEVICE_CODE (0x9341u)

#define	ILI93XX_COLOR(r, g, b) ((r << 16) \| (g << 8) \| b)
	This macro generates a 16-bit native color for the display from a 24-bit RGB value. More...

#define	ILI93XX_FLIP_X 1
	Bit mask for flipping X for ili93xx_set_orientation() More...

#define	ILI93XX_FLIP_Y 2
	Bit mask for flipping Y for ili93xx_set_orientation() More...

#define	ILI93XX_LCD_HEIGHT 320

#define	ILI93XX_LCD_WIDTH 240
	ili93xx screen size More...

#define	ILI93XX_SWITCH_XY 4
	Bit mask for swapping X and Y for ili93xx_set_orientation() More...

#define	ILI93XX_SWITCH_XY_HEIGHT 320

#define	ILI93XX_SWITCH_XY_WIDTH 240

#define	LCD_DATA_CACHE_SIZE ILI93XX_LCD_WIDTH
	Pixel cache used to speed up communication. More...

Typedefs
typedef ili93xx_color_t	gfx_color_t

typedef int16_t	gfx_coord_t

typedef uint32_t	ili93xx_color_t
	Type define for an integer type large enough to store a pixel color. More...

typedef int16_t	ili93xx_coord_t
	Type define for an integer type large enough to store a pixel coordinate. More...

Enumerations
enum	ili93xx_display_direction { LANDSCAPE = 0, PORTRAIT = 1 }
	Display direction option. More...

enum	ili93xx_scan_direction { V_INCREASE = 0, V_DEREASE = 1 }
	Scan direction option. More...

enum	ili93xx_shift_direction { H_INCREASE = 0, H_DECREASE = 1 }
	Shift direction option. More...

Functions
static void	ili93xx_check_box_coordinates (uint32_t p_ul_x1, uint32_t p_ul_y1, uint32_t p_ul_x2, uint32_t p_ul_y2)
	Check box coordinates. More...

void	ili93xx_copy_pixels_from_screen (ili93xx_color_t *pixels, uint32_t count)
	Copy pixels from the screen to a pixel buffer. More...

void	ili93xx_copy_pixels_to_screen (const ili93xx_color_t *pixels, uint32_t count)
	Copy pixels from SRAM to the screen. More...

void	ili93xx_copy_raw_pixel_24bits_to_screen (const uint8_t *raw_pixels, uint32_t count)
	Copy pixels from SRAM to the screen. More...

static void	ili93xx_delay (uint32_t ul_ms)
	Delay function. More...

uint8_t	ili93xx_device_type (void)
	get the device type. More...

uint8_t	ili93xx_device_type_identify (void)
	Read device ID to idenfity the device ILI9325 device ID locates in Device Code Read (R00h) register. More...

void	ili93xx_disable_scroll (void)
	Disable the scrolling feature. More...

void	ili93xx_display_off (void)
	Turn off the LCD. More...

void	ili93xx_display_on (void)
	Turn on the LCD. More...

static void	ili93xx_draw_char (uint32_t ul_x, uint32_t ul_y, uint8_t uc_c)
	Draw an ASCII character on LCD. More...

uint32_t	ili93xx_draw_circle (uint32_t ul_x, uint32_t ul_y, uint32_t ul_r)
	Draw a circle on LCD. More...

uint32_t	ili93xx_draw_filled_circle (uint32_t ul_x, uint32_t ul_y, uint32_t ul_r)
	Draw a filled circle on LCD. More...

void	ili93xx_draw_filled_rectangle (uint32_t ul_x1, uint32_t ul_y1, uint32_t ul_x2, uint32_t ul_y2)
	Draw a filled rectangle on LCD. More...

void	ili93xx_draw_line (uint32_t ul_x1, uint32_t ul_y1, uint32_t ul_x2, uint32_t ul_y2)
	Draw a line on LCD. More...

static void	ili93xx_draw_line_bresenham (uint32_t ul_x1, uint32_t ul_y1, uint32_t ul_x2, uint32_t ul_y2)
	Draw a line on LCD, which is not horizontal or vertical. More...

uint32_t	ili93xx_draw_pixel (uint32_t ul_x, uint32_t ul_y)
	Draw a pixel on LCD. More...

void	ili93xx_draw_pixmap (uint32_t ul_x, uint32_t ul_y, uint32_t ul_width, uint32_t ul_height, const ili93xx_color_t *p_ul_pixmap)
	Draw a pixmap on LCD. More...

void	ili93xx_draw_rectangle (uint32_t ul_x1, uint32_t ul_y1, uint32_t ul_x2, uint32_t ul_y2)
	Draw a rectangle on LCD. More...

void	ili93xx_draw_string (uint32_t ul_x, uint32_t ul_y, const uint8_t *p_str)
	Draw a string on LCD. More...

void	ili93xx_duplicate_pixel (const ili93xx_color_t color, uint32_t count)
	Set a given number of pixels to the same color. More...

void	ili93xx_enable_scroll (void)
	Enable the scrolling feature. More...

void	ili93xx_fill (ili93xx_color_t ul_color)
	Fill the LCD buffer with the specified color. More...

uint32_t	ili93xx_get_lcd_type (void)

ili93xx_color_t	ili93xx_get_pixel (uint32_t ul_x, uint32_t ul_y)
	Get a pixel from LCD. More...

uint32_t	ili93xx_init (struct ili93xx_opt_t *p_opt)
	Initialize the ILI93XX lcd driver. More...

ili93xx_color_t	ili93xx_read_gram (void)
	Read a single color from the graphical memory. More...

static uint32_t	ili93xx_read_ram (void)
	Read data to LCD GRAM for ili93xx. More...

static void	ili93xx_read_ram_prepare (void)
	Prepare to read GRAM data for ili93xx. More...

static void	ili93xx_read_register (uint8_t uc_reg, uint8_t *p_data, uint8_t uc_datacnt)
	Read data from LCD Register. More...

void	ili93xx_scroll (int32_t ul_lines)
	Scroll up/down for the number of specified lines. More...

static void	ili93xx_send_draw_limits (const bool send_end_limits)
	Helper function to send the drawing limits (boundaries) to the display. More...

void	ili93xx_set_bottom_right_limit (ili93xx_coord_t x, ili93xx_coord_t y)
	Set the display bottom right drawing limit. More...

void	ili93xx_set_cursor_position (uint16_t us_x, uint16_t us_y)
	Set cursor of LCD screen. More...

void	ili93xx_set_display_direction (enum ili93xx_display_direction e_dd, enum ili93xx_shift_direction e_shd, enum ili93xx_scan_direction e_scd)
	Set display direction. More...

void	ili93xx_set_foreground_color (ili93xx_color_t ul_color)
	Set foreground color. More...

void	ili93xx_set_limits (ili93xx_coord_t start_x, ili93xx_coord_t start_y, ili93xx_coord_t end_x, ili93xx_coord_t end_y)
	Set the full display drawing limits. More...

void	ili93xx_set_orientation (uint8_t flags)
	Sets the orientation of the display data. More...

void	ili93xx_set_top_left_limit (ili93xx_coord_t x, ili93xx_coord_t y)
	Set the display top left drawing limit. More...

void	ili93xx_set_window (uint32_t ul_x, uint32_t ul_y, uint32_t ul_width, uint32_t ul_height)
	Set display window. More...

void	ili93xx_vscroll_area_define (uint16_t us_tfa, uint16_t us_vsa, uint16_t us_bfa)
	Vertical Scroll area definition for ili9341. More...

void	ili93xx_write_gram (ili93xx_color_t color)
	Write the graphical memory with a single color pixel. More...

static void	ili93xx_write_ram (ili93xx_color_t ul_color)
	Write data to LCD GRAM. More...

static void	ili93xx_write_ram_buffer (const ili93xx_color_t *p_ul_buf, uint32_t ul_size)
	Write multiple data in buffer to LCD controller for ili93xx. More...

static void	ili93xx_write_ram_prepare (void)
	Prepare to write GRAM data for ili93xx. More...

static void	ili93xx_write_register (uint8_t uc_reg, uint8_t *p_data, uint8_t uc_datacnt)
	Write data to LCD Register for ili93xx. More...

static void	ili93xx_write_register_word (uint8_t uc_reg, uint16_t us_data)
	Write a word (16bits)to LCD Register. More...

Variables
static uint8_t	g_uc_device_type = 0
	Device type. More...

static uint32_t	g_ul_lcd_x_length = ILI93XX_LCD_WIDTH
	LCD X-axis and Y-axis length. More...

static uint32_t	g_ul_lcd_y_length = ILI93XX_LCD_HEIGHT

static ili93xx_color_t	g_ul_pixel_cache [LCD_DATA_CACHE_SIZE]

struct ili93xx_font	gfont = {10, 14}
	Global variable describing the font size used by the driver. More...

static volatile ili93xx_coord_t	limit_end_x

static volatile ili93xx_coord_t	limit_end_y

static volatile ili93xx_coord_t	limit_start_x

static volatile ili93xx_coord_t	limit_start_y

const uint8_t	p_uc_charset10x14 []
	Character set table for font 10x14 Coding format: Char height is 14 bits, which is coded using 2 bytes per column (2 unused bits). More...

#define COLOR_AZUR (0xF0FFFFu)

#define COLOR_BEIGE (0xF5F5DCu)

#define COLOR_BLACK (0x000000u)

Define EBI access for ILI93xx 8-bit System Interface.

RGB 24-bits color table definition (RGB888).

#define COLOR_BLUE (0x0000FFu)

#define COLOR_BLUEVIOLET (0x8A2BE2u)

#define COLOR_BROWN (0xA52A2Au)

#define COLOR_CYAN (0x00FFFFu)

#define COLOR_DARKBLUE (0x00008Bu)

#define COLOR_DARKCYAN (0x008B8Bu)

#define COLOR_DARKGRAY (0xA9A9A9u)

#define COLOR_DARKGREEN (0x006400u)

#define COLOR_DARKRED (0x800000u)

#define COLOR_DARKVIOLET (0x9400D3u)

#define COLOR_GOLD (0xFFD700u)

#define COLOR_GRAY (0x808080u)

#define COLOR_GREEN (0x00FF00u)

#define COLOR_GREENYELLOW (0xADFF2Fu)

#define COLOR_INDIGO (0x4B0082u)

#define COLOR_LIGHTBLUE (0xADD8E6u)

#define COLOR_LIGHTCYAN (0xE0FFFFu)

#define COLOR_LIGHTGREEN (0x90EE90u)

#define COLOR_LIGHTGREY (0xD3D3D3u)

#define COLOR_MAGENTA (0xFF00FFu)

#define COLOR_NAVY (0x000080u)

#define COLOR_OLIVE (0x808000u)

#define COLOR_ORANGE (0xFFA500u)

#define COLOR_RED (0xFF0000u)

#define COLOR_SIENNA (0xA0522Du)

#define COLOR_SILVER (0xC0C0C0u)

#define COLOR_SKYBLUE (0x87CEEBu)

#define COLOR_SNOW (0xFFFAFAu)

#define COLOR_TOMATO (0xFF6347u)

#define COLOR_TURQUOISE (0x40E0D0u)

#define COLOR_VIOLET (0xEE82EEu)

#define COLOR_WHITE (0xFFFFFFu)

#define COLOR_YELLOW (0xFFFF00u)

#define COLOR_YELLOWGREEN (0x9ACD32u)

#define ILI9325_DEVICE_CODE (0x9325u)

ili93xx ID code

#define ILI9341_DEVICE_CODE (0x9341u)

Referenced by ili93xx_device_type_identify().

#define ILI93XX_COLOR	(	r,
		g,
		b
	)	((r << 16) \| (g << 8) \| b)

This macro generates a 16-bit native color for the display from a 24-bit RGB value.

#define ILI93XX_FLIP_X 1

Bit mask for flipping X for ili93xx_set_orientation()

Referenced by ili93xx_set_orientation().

#define ILI93XX_FLIP_Y 2

Bit mask for flipping Y for ili93xx_set_orientation()

Referenced by ili93xx_set_orientation().

#define ILI93XX_LCD_HEIGHT 320

Referenced by gfx_ili93xx_init(), gfx_ili93xx_set_orientation(), ili93xx_fill(), ili93xx_init(), and ili93xx_set_display_direction().

#define ILI93XX_LCD_WIDTH 240

ili93xx screen size

Referenced by gfx_ili93xx_init(), gfx_ili93xx_set_orientation(), ili93xx_fill(), ili93xx_init(), and ili93xx_set_display_direction().

#define ILI93XX_SWITCH_XY 4

Bit mask for swapping X and Y for ili93xx_set_orientation()

Referenced by ili93xx_set_orientation().

#define ILI93XX_SWITCH_XY_HEIGHT 320

Referenced by gfx_ili93xx_set_orientation().

#define ILI93XX_SWITCH_XY_WIDTH 240

Referenced by gfx_ili93xx_set_orientation().

#define LCD_DATA_CACHE_SIZE ILI93XX_LCD_WIDTH

Pixel cache used to speed up communication.

Referenced by ili93xx_draw_filled_rectangle(), and ili93xx_set_foreground_color().

typedef ili93xx_color_t gfx_color_t

typedef int16_t gfx_coord_t

typedef uint32_t ili93xx_color_t

Type define for an integer type large enough to store a pixel color.

typedef int16_t ili93xx_coord_t

Type define for an integer type large enough to store a pixel coordinate.

enum ili93xx_display_direction

Display direction option.

Enumerator
LANDSCAPE
PORTRAIT

enum ili93xx_scan_direction

Scan direction option.

Enumerator
V_INCREASE
V_DEREASE

enum ili93xx_shift_direction

Shift direction option.

Enumerator
H_INCREASE
H_DECREASE

static void ili93xx_check_box_coordinates	(	uint32_t *	p_ul_x1,
		uint32_t *	p_ul_y1,
		uint32_t *	p_ul_x2,
		uint32_t *	p_ul_y2
	)

static

Check box coordinates.

Parameters

p_ul_x1	X coordinate of upper-left corner on LCD.
p_ul_y1	Y coordinate of upper-left corner on LCD.
p_ul_x2	X coordinate of lower-right corner on LCD.
p_ul_y2	Y coordinate of lower-right corner on LCD.

References g_ul_lcd_x_length, and g_ul_lcd_y_length.

Referenced by ili93xx_draw_filled_rectangle(), ili93xx_draw_pixmap(), and ili93xx_draw_rectangle().

void ili93xx_copy_pixels_from_screen	(	ili93xx_color_t *	pixels,
		uint32_t	count
	)

Copy pixels from the screen to a pixel buffer.

Use this function to copy pixels from the display to an internal SRAM buffer.

Parameters

pixels	Pointer to the pixel buffer to read to
count	Number of pixels to read

Remove warnings

References UNUSED.

void ili93xx_copy_pixels_to_screen	(	const ili93xx_color_t *	pixels,
		uint32_t	count
	)

Copy pixels from SRAM to the screen.

Used to copy a large quantitative of data to the screen in one go.

Parameters

pixels	Pointer to the pixel data
count	Number of pixels to copy to the screen

Sanity check to make sure that the pixel count is not zero

References Assert, DEVICE_TYPE_ILI9325, DEVICE_TYPE_ILI9341, g_uc_device_type, ILI9325_GRAM_DATA_REG, ILI9341_CMD_MEMORY_WRITE, and ILI9341_CMD_WRITE_MEMORY_CONTINUE.

void ili93xx_copy_raw_pixel_24bits_to_screen	(	const uint8_t *	raw_pixels,
		uint32_t	count
	)

Copy pixels from SRAM to the screen.

Used to copy a large quantitative of data to the screen in one go.

Parameters

pixels	Pointer to the pixel data
count	Number of pixels to copy to the screen

Sanity check to make sure that the pixel count is not zero

References Assert, DEVICE_TYPE_ILI9325, DEVICE_TYPE_ILI9341, g_uc_device_type, ILI9325_GRAM_DATA_REG, ILI9341_CMD_MEMORY_WRITE, and ILI9341_CMD_WRITE_MEMORY_CONTINUE.

static void ili93xx_delay ( uint32_t ul_ms )

static

Delay function.

Referenced by ili93xx_init().

uint8_t ili93xx_device_type ( void )

get the device type.

References g_uc_device_type.

uint8_t ili93xx_device_type_identify ( void )

Read device ID to idenfity the device ILI9325 device ID locates in Device Code Read (R00h) register.

   ILI9341 device ID locates in Read ID4 (RD3h) register.

Returns: 0 if secceed in identifying device; otherwise fails.

Read ID4 (RD4h) register to get device code for ILI9341

Driver Code Read (R00h) for ILI9325

References DEVICE_TYPE_ILI9325, DEVICE_TYPE_ILI9341, g_uc_device_type, ILI9325_DEVICE_CODE, ILI9325_DEVICE_CODE_REG, ILI9341_CMD_READ_ID4, ILI9341_DEVICE_CODE, and ili93xx_read_register().

Referenced by ili93xx_init().

void ili93xx_disable_scroll ( void )

Disable the scrolling feature.

References DEVICE_TYPE_ILI9325, DEVICE_TYPE_ILI9341, g_uc_device_type, ILI9325_BASE_IMG_DISP_CTRL, ILI9325_BASE_IMG_DISP_CTRL_REV, ILI9341_CMD_NORMAL_DISP_MODE_ON, ili93xx_display_off(), ili93xx_display_on(), ili93xx_write_register(), ili93xx_write_register_word(), and NULL.

void ili93xx_display_off ( void )

Turn off the LCD.

References DEVICE_TYPE_ILI9325, DEVICE_TYPE_ILI9341, g_uc_device_type, ILI9325_DISP_CTRL1, ILI9341_CMD_DISPLAY_OFF, ili93xx_write_register(), ili93xx_write_register_word(), and NULL.

Referenced by ili93xx_disable_scroll().

void ili93xx_display_on ( void )

Turn on the LCD.

References DEVICE_TYPE_ILI9325, DEVICE_TYPE_ILI9341, g_uc_device_type, ILI9325_DISP_CTRL1, ILI9325_DISP_CTRL1_BASEE, ILI9325_DISP_CTRL1_D, ILI9325_DISP_CTRL1_DTE, ILI9325_DISP_CTRL1_GON, ILI9341_CMD_DISPLAY_ON, ili93xx_write_register(), ili93xx_write_register_word(), and NULL.

Referenced by gfx_ili93xx_init(), and ili93xx_disable_scroll().

static void ili93xx_draw_char	(	uint32_t	ul_x,
		uint32_t	ul_y,
		uint8_t	uc_c
	)

static

Draw an ASCII character on LCD.

Parameters

ul_x	X coordinate of character upper-left corner.
ul_y	Y coordinate of character upper-left corner.
uc_c	character to print.

Compute offset according of the specified ASCII character Note: the first 32 characters of the ASCII table are not handled

Compute the first and second byte offset of a column

Draw pixel on screen depending on the corresponding bit value from the charset

References ili93xx_draw_pixel(), and p_uc_charset10x14.

Referenced by ili93xx_draw_string().

uint32_t ili93xx_draw_circle	(	uint32_t	ul_x,
		uint32_t	ul_y,
		uint32_t	ul_r
	)

Draw a circle on LCD.

Parameters

ul_x	X coordinate of circle center.
ul_y	Y coordinate of circle center.
ul_r	circle radius.

Returns: 0 if succeeds, otherwise fails.

References ili93xx_draw_pixel().

uint32_t ili93xx_draw_filled_circle	(	uint32_t	ul_x,
		uint32_t	ul_y,
		uint32_t	ul_r
	)

Draw a filled circle on LCD.

Parameters

ul_x	X coordinate of circle center.
ul_y	Y coordinate of circle center.
ul_r	circle radius.

Returns: 0 if succeeds, otherwise fails.

References ili93xx_draw_filled_rectangle().

void ili93xx_draw_filled_rectangle	(	uint32_t	ul_x1,
		uint32_t	ul_y1,
		uint32_t	ul_x2,
		uint32_t	ul_y2
	)

Draw a filled rectangle on LCD.

Parameters

ul_x1	X coordinate of upper-left corner on LCD.
ul_y1	Y coordinate of upper-left corner on LCD.
ul_x2	X coordinate of lower-right corner on LCD.
ul_y2	Y coordinate of lower-right corner on LCD.

Swap coordinates if necessary

Determine the refresh window area

Set cursor

Prepare to write in Graphic RAM

Send pixels blocks => one SPI IT / block

Send remaining pixels

Reset the refresh window area

References g_ul_lcd_x_length, g_ul_lcd_y_length, g_ul_pixel_cache, ili93xx_check_box_coordinates(), ili93xx_set_cursor_position(), ili93xx_set_window(), ili93xx_write_ram_buffer(), ili93xx_write_ram_prepare(), and LCD_DATA_CACHE_SIZE.

Referenced by ili93xx_draw_filled_circle(), ili93xx_draw_line(), and ili93xx_draw_rectangle().

void ili93xx_draw_line	(	uint32_t	ul_x1,
		uint32_t	ul_y1,
		uint32_t	ul_x2,
		uint32_t	ul_y2
	)

Draw a line on LCD.

Parameters

ul_x1	X coordinate of line start.
ul_y1	Y coordinate of line start.
ul_x2	X coordinate of line end.
ul_y2	Y coordinate of line end.

References ili93xx_draw_filled_rectangle(), and ili93xx_draw_line_bresenham().

static void ili93xx_draw_line_bresenham	(	uint32_t	ul_x1,
		uint32_t	ul_y1,
		uint32_t	ul_x2,
		uint32_t	ul_y2
	)

static

Draw a line on LCD, which is not horizontal or vertical.

Parameters

ul_x1	X coordinate of line start.
ul_y1	Y coordinate of line start.
ul_x2	X coordinate of line end.
ul_y2	Y coordinate of line endl.

References ili93xx_draw_pixel().

Referenced by ili93xx_draw_line().

uint32_t ili93xx_draw_pixel	(	uint32_t	ul_x,
		uint32_t	ul_y
	)

Draw a pixel on LCD.

Parameters

ul_x	X coordinate of pixel.
ul_y	Y coordinate of pixel.

Returns: 0 if succeeds, otherwise fails.

Set cursor

Prepare to write in GRAM

References DEVICE_TYPE_ILI9325, DEVICE_TYPE_ILI9341, g_uc_device_type, g_ul_lcd_x_length, g_ul_lcd_y_length, g_ul_pixel_cache, ili93xx_set_cursor_position(), ili93xx_set_window(), ili93xx_write_ram(), and ili93xx_write_ram_prepare().

Referenced by ili93xx_draw_char(), ili93xx_draw_circle(), and ili93xx_draw_line_bresenham().

void ili93xx_draw_pixmap	(	uint32_t	ul_x,
		uint32_t	ul_y,
		uint32_t	ul_width,
		uint32_t	ul_height,
		const ili93xx_color_t *	p_ul_pixmap
	)

Draw a pixmap on LCD.

Parameters

ul_x	X coordinate of upper-left corner on LCD.
ul_y	Y coordinate of upper-left corner on LCD.
ul_width	width of the picture.
ul_height	height of the picture.
p_ul_pixmap	pixmap of the image.

Swap coordinates if necessary

Determine the refresh window area

Set cursor

Prepare to write in GRAM

Reset the refresh window area

Prepare to write in GRAM

Reset the refresh window area

References DEVICE_TYPE_ILI9325, DEVICE_TYPE_ILI9341, g_uc_device_type, g_ul_lcd_x_length, g_ul_lcd_y_length, ili93xx_check_box_coordinates(), ili93xx_set_cursor_position(), ili93xx_set_window(), ili93xx_write_ram_buffer(), and ili93xx_write_ram_prepare().

void ili93xx_draw_rectangle	(	uint32_t	ul_x1,
		uint32_t	ul_y1,
		uint32_t	ul_x2,
		uint32_t	ul_y2
	)

Draw a rectangle on LCD.

Parameters

ul_x1	X coordinate of upper-left corner on LCD.
ul_y1	Y coordinate of upper-left corner on LCD.
ul_x2	X coordinate of lower-right corner on LCD.
ul_y2	Y coordinate of lower-right corner on LCD.

References ili93xx_check_box_coordinates(), and ili93xx_draw_filled_rectangle().

void ili93xx_draw_string	(	uint32_t	ul_x,
		uint32_t	ul_y,
		const uint8_t *	p_str
	)

Draw a string on LCD.

Parameters

ul_x	X coordinate of string top-left corner.
ul_y	Y coordinate of string top-left corner.
p_str	String to display.

If newline, jump to the next line (font height + 2)

Draw the character and place cursor right after (font width + 2)

References ili93xx_font::height, ili93xx_draw_char(), and ili93xx_font::width.

void ili93xx_duplicate_pixel	(	const ili93xx_color_t	color,
		uint32_t	count
	)

Set a given number of pixels to the same color.

Use this function to write a certain number of pixels to the same color within a set limit.

Parameters

color	The color to write to the display
count	The number of pixels to write with this color

Sanity check to make sure that the pixel count is not zero

Write Data to GRAM (R22h)

References Assert, DEVICE_TYPE_ILI9325, DEVICE_TYPE_ILI9341, g_uc_device_type, ILI9325_GRAM_DATA_REG, ILI9341_CMD_MEMORY_WRITE, and ILI9341_CMD_WRITE_MEMORY_CONTINUE.

void ili93xx_enable_scroll ( void )

Enable the scrolling feature.

no operation needed for ILI9341

References DEVICE_TYPE_ILI9325, DEVICE_TYPE_ILI9341, g_uc_device_type, ILI9325_BASE_IMG_DISP_CTRL, ILI9325_BASE_IMG_DISP_CTRL_REV, ILI9325_BASE_IMG_DISP_CTRL_VLE, and ili93xx_write_register_word().

void ili93xx_fill ( ili93xx_color_t ul_color )

Fill the LCD buffer with the specified color.

Parameters

ul_color fill color.

References DEVICE_TYPE_ILI9325, DEVICE_TYPE_ILI9341, g_uc_device_type, g_ul_lcd_x_length, g_ul_lcd_y_length, ILI93XX_LCD_HEIGHT, ILI93XX_LCD_WIDTH, ili93xx_set_cursor_position(), ili93xx_set_window(), ili93xx_write_ram(), and ili93xx_write_ram_prepare().

uint32_t ili93xx_get_lcd_type ( void )

References g_uc_device_type.

ili93xx_color_t ili93xx_get_pixel	(	uint32_t	ul_x,
		uint32_t	ul_y
	)

Get a pixel from LCD.

Parameters

ul_x	X coordinate of pixel.
ul_y	Y coordinate of pixel.

Returns: the pixel color.

Set cursor

Prepare to write in GRAM

References Assert, DEVICE_TYPE_ILI9325, DEVICE_TYPE_ILI9341, g_uc_device_type, g_ul_lcd_x_length, g_ul_lcd_y_length, ili93xx_read_ram(), ili93xx_read_ram_prepare(), ili93xx_set_cursor_position(), and ili93xx_set_window().

uint32_t ili93xx_init ( struct ili93xx_opt_t * p_opt )

Initialize the ILI93XX lcd driver.

Note

Make sure below works have been done before calling ili93xx_init()

ILI93xx related Pins have been initialized correctly.
SMC has been configured correctly for access ILI93xx (8-bit system interface for now).

Parameters

p_opt pointer to ILI93xx option structure.

Returns: 0 if initialization succeeds, otherwise fails.

Identify the LCD driver device

Turn off LCD

Start initial sequence

Disable sleep and standby mode

Start internal OSC

Set SS bit and direction output from S720 to S1

Set 1 line inversion

Disable resizing feature

Set the back porch and front porch

Set non-display area refresh cycle ISC[3:0]

Disable FMARK function

18-bit RGB interface and writing display data by system interface

Set the output position of frame cycle

RGB interface polarity

Power on sequence

Disable sleep and standby mode

Selects the operating frequency of the step-up circuit 1,2 and Sets the ratio factor of Vci.

Set VREG1OUT voltage

Set VCOM amplitude

Enable power supply and source driver

Adjusts the constant current and Sets the factor used in the step-up circuits.

Select the operating frequency of the step-up circuit 1,2 and Sets the ratio factor of Vci

Internal reference voltage= Vci

Set VDV[4:0] for VCOM amplitude

Set VCM[5:0] for VCOMH

Set Frame Rate

Adjust the Gamma Curve

Use the high speed write mode (HWM=1) When TRI = 1, data are transferred to the internal RAM in 8-bit x 3 transfers mode via the 8-bit interface. DFM Set the mode of transferring data to the internal RAM when TRI = 1. I/D[1:0] = 11 Horizontal : increment Vertical : increment, AM=0:Horizontal

Sets the number of lines to drive the LCD at an interval of 8 lines. The scan direction is from G320 to G1

Vertical Scrolling

Disable scrolling and enable the grayscale inversion

Disable Partial Display

Panel Control

init for ILI9341

power control A configuration

power control B configuration

Pump Ratio Control configuration

Power Control 1 configuration

Power Control 2 configuration

VOM Control 1 configuration

VOM control 2 configuration

Driver Timing Control A configuration

Driver Timing Control B configuration

Memory Access Control configuration

Colmod Pixel Format Set configuation

Display Function Control

set window area

Leave sleep mode

Display on

exit with return value 1 if device type is not supported.

References DEVICE_TYPE_ILI9325, DEVICE_TYPE_ILI9341, ili93xx_opt_t::foreground_color, g_uc_device_type, g_ul_lcd_x_length, g_ul_lcd_y_length, ILI9325_BASE_IMG_DISP_CTRL, ILI9325_BASE_IMG_DISP_CTRL_REV, ILI9325_DISP_CTRL1, ILI9325_DISP_CTRL1_D, ILI9325_DISP_CTRL1_DTE, ILI9325_DISP_CTRL1_GON, ILI9325_DISP_CTRL2, ILI9325_DISP_CTRL2_BP, ILI9325_DISP_CTRL2_FP, ILI9325_DISP_CTRL3, ILI9325_DISP_CTRL4, ILI9325_DRIVER_OUTPUT_CTRL1, ILI9325_DRIVER_OUTPUT_CTRL1_SS, ILI9325_DRIVER_OUTPUT_CTRL2, ILI9325_DRIVER_OUTPUT_CTRL2_GS, ILI9325_DRIVER_OUTPUT_CTRL2_NL, ILI9325_ENTRY_MODE, ILI9325_ENTRY_MODE_BGR, ILI9325_ENTRY_MODE_DFM, ILI9325_ENTRY_MODE_ID, ILI9325_ENTRY_MODE_TRI, ILI9325_FRAME_MAKER_POS, ILI9325_FRAME_RATE_AND_COLOR_CTRL, ILI9325_FRAME_RATE_AND_COLOR_CTRL_FRS, ILI9325_GAMMA_CTL1, ILI9325_GAMMA_CTL10, ILI9325_GAMMA_CTL10_VRN0, ILI9325_GAMMA_CTL10_VRN1, ILI9325_GAMMA_CTL2, ILI9325_GAMMA_CTL2_KP2, ILI9325_GAMMA_CTL2_KP3, ILI9325_GAMMA_CTL3, ILI9325_GAMMA_CTL3_KP4, ILI9325_GAMMA_CTL3_KP5, ILI9325_GAMMA_CTL4, ILI9325_GAMMA_CTL4_RP0, ILI9325_GAMMA_CTL4_RP1, ILI9325_GAMMA_CTL5, ILI9325_GAMMA_CTL5_VRP0, ILI9325_GAMMA_CTL5_VRP1, ILI9325_GAMMA_CTL6, ILI9325_GAMMA_CTL6_KN0, ILI9325_GAMMA_CTL6_KN1, ILI9325_GAMMA_CTL7, ILI9325_GAMMA_CTL7_KN2, ILI9325_GAMMA_CTL7_KN3, ILI9325_GAMMA_CTL8, ILI9325_GAMMA_CTL8_KN4, ILI9325_GAMMA_CTL8_KN5, ILI9325_GAMMA_CTL9, ILI9325_GAMMA_CTL9_RN0, ILI9325_GAMMA_CTL9_RN1, ILI9325_LCD_DRIVING_CTRL, ILI9325_LCD_DRIVING_CTRL_BC0, ILI9325_LCD_DRIVING_CTRL_BIT10, ILI9325_LCD_DRIVING_CTRL_EOR, ILI9325_PANEL_INTERFACE_CTRL1, ILI9325_PANEL_INTERFACE_CTRL1_RTNI, ILI9325_PANEL_INTERFACE_CTRL2, ILI9325_PANEL_INTERFACE_CTRL2_NOWI, ILI9325_PANEL_INTERFACE_CTRL4, ILI9325_PANEL_INTERFACE_CTRL4_DIVE, ILI9325_PANEL_INTERFACE_CTRL4_RTNE, ILI9325_PARTIAL_IMG1_AREA_END_LINE, ILI9325_PARTIAL_IMG1_AREA_START_LINE, ILI9325_PARTIAL_IMG1_DISP_POS, ILI9325_PARTIAL_IMG2_AREA_END_LINE, ILI9325_PARTIAL_IMG2_AREA_START_LINE, ILI9325_PARTIAL_IMG2_DISP_POS, ILI9325_POWER_CTRL1, ILI9325_POWER_CTRL1_AP, ILI9325_POWER_CTRL1_APE, ILI9325_POWER_CTRL1_BT, ILI9325_POWER_CTRL1_SAP, ILI9325_POWER_CTRL2, ILI9325_POWER_CTRL2_DC0, ILI9325_POWER_CTRL2_DC1, ILI9325_POWER_CTRL2_VC, ILI9325_POWER_CTRL3, ILI9325_POWER_CTRL3_PON, ILI9325_POWER_CTRL3_VRH, ILI9325_POWER_CTRL4, ILI9325_POWER_CTRL4_VDV, ILI9325_POWER_CTRL7, ILI9325_POWER_CTRL7_VCM, ILI9325_RESIZE_CTRL, ILI9325_RGB_DISP_INTERFACE_CTRL1, ILI9325_RGB_DISP_INTERFACE_CTRL2, ILI9325_START_OSC_CTRL, ILI9325_START_OSC_CTRL_EN, ILI9325_VERTICAL_SCROLL_CTRL, ILI9341_CMD_DISPLAY_FUNCTION_CTL, ILI9341_CMD_DISPLAY_ON, ILI9341_CMD_DRIVER_TIMING_CTL_A, ILI9341_CMD_DRIVER_TIMING_CTL_B, ILI9341_CMD_MEMORY_ACCESS_CONTROL, ILI9341_CMD_MEMORY_ACCESS_CONTROL_BGR, ILI9341_CMD_MEMORY_ACCESS_CONTROL_MX, ILI9341_CMD_PIXEL_FORMAT_SET, ILI9341_CMD_POWER_CONTROL_1, ILI9341_CMD_POWER_CONTROL_2, ILI9341_CMD_POWER_CONTROL_A, ILI9341_CMD_POWER_CONTROL_B, ILI9341_CMD_PUMP_RATIO_CONTROL, ILI9341_CMD_SLEEP_OUT, ILI9341_CMD_VCOM_CONTROL_1, ILI9341_CMD_VCOM_CONTROL_2, ili93xx_delay(), ili93xx_device_type_identify(), ILI93XX_LCD_HEIGHT, ILI93XX_LCD_WIDTH, ili93xx_set_cursor_position(), ili93xx_set_foreground_color(), ili93xx_set_window(), ili93xx_write_register(), ili93xx_write_register_word(), ili93xx_opt_t::ul_height, and ili93xx_opt_t::ul_width.

Referenced by gfx_ili93xx_init().

ili93xx_color_t ili93xx_read_gram ( void )

Read a single color from the graphical memory.

Use this function to read a color from the graphical memory of the controller.

Return values

ili93xx_color_t The read color pixel

Write Data to GRAM (R22h)

two dummy read

data upper byte

data lower byte

Convert RGB565 to RGB888

For BGR format

Write Data to GRAM (R2Eh)

dummy read

the highest byte - R byte

the middle byte - G byte

the lowest byte - B byte

combine R, G, B byte to a color value

References DEVICE_TYPE_ILI9325, DEVICE_TYPE_ILI9341, g_uc_device_type, ILI9325_GRAM_DATA_REG, and ILI9341_CMD_MEMORY_READ.

Referenced by gfx_ili93xx_get_pixel().

static uint32_t ili93xx_read_ram ( void )

static

Read data to LCD GRAM for ili93xx.

Note: For ili9325, because pixel data LCD GRAM is 18-bits, so convertion to RGB 24-bits will cause low color bit lose.

Returns: color 24-bits RGB color.

dummy read

data upper byte

data lower byte

Convert RGB565 to RGB888

For BGR format

dummy read

the highest byte - R byte

the middle byte - G byte

the lowest byte - B byte

combine R, G, B byte to a color value

References DEVICE_TYPE_ILI9325, DEVICE_TYPE_ILI9341, and g_uc_device_type.

Referenced by ili93xx_get_pixel().

static void ili93xx_read_ram_prepare ( void )

static

Prepare to read GRAM data for ili93xx.

Write Data to GRAM (R22h)

Write Data to GRAM (R2Eh)

References DEVICE_TYPE_ILI9325, DEVICE_TYPE_ILI9341, g_uc_device_type, ILI9325_GRAM_DATA_REG, and ILI9341_CMD_MEMORY_READ.

Referenced by ili93xx_get_pixel().

static void ili93xx_read_register	(	uint8_t	uc_reg,
		uint8_t *	p_data,
		uint8_t	uc_datacnt
	)

static

Read data from LCD Register.

Parameters

uc_reg	register address.
p_data	the pointer to the read data.
uc_datacnt	the number of the read data

Referenced by ili93xx_device_type_identify().

void ili93xx_scroll ( int32_t ul_lines )

Scroll up/down for the number of specified lines.

Parameters

ul_lines number of lines to scroll.

References DEVICE_TYPE_ILI9325, DEVICE_TYPE_ILI9341, g_uc_device_type, ILI9325_VERTICAL_SCROLL_CTRL, ILI9341_CMD_VERT_SCROLL_START_ADDRESS, ili93xx_write_register(), and ili93xx_write_register_word().

static void ili93xx_send_draw_limits ( const bool send_end_limits )

inlinestatic

Helper function to send the drawing limits (boundaries) to the display.

This function is used to send the currently set upper-left and lower-right drawing limits to the display, as set through the various limit functions.

Parameters

send_end_limits True to also send the lower-right drawing limits

Set Horizontal Address Start Position

Set Horizontal Address End Position

Set Vertical Address Start Position

Set Vertical Address End Position

GRAM Horizontal/Vertical Address Set (R20h, R21h)

Set Column Address Position

Set Page Address Position

Set Horizontal Address Start Position

Set Vertical Address Start Position

References DEVICE_TYPE_ILI9325, DEVICE_TYPE_ILI9341, g_uc_device_type, ILI9325_HORIZONTAL_ADDR_END, ILI9325_HORIZONTAL_ADDR_START, ILI9325_HORIZONTAL_GRAM_ADDR_SET, ILI9325_VERTICAL_ADDR_END, ILI9325_VERTICAL_ADDR_START, ILI9325_VERTICAL_GRAM_ADDR_SET, ILI9341_CMD_COLUMN_ADDRESS_SET, ILI9341_CMD_PAGE_ADDRESS_SET, ili93xx_write_register(), ili93xx_write_register_word(), limit_end_x, limit_end_y, limit_start_x, and limit_start_y.

Referenced by ili93xx_set_bottom_right_limit(), ili93xx_set_limits(), and ili93xx_set_top_left_limit().

void ili93xx_set_bottom_right_limit	(	ili93xx_coord_t	x,
		ili93xx_coord_t	y
	)

Set the display bottom right drawing limit.

Use this function to set the bottom right corner of the drawing limit box.

Parameters

x	The x coordinate of the bottom right corner
y	The y coordinate of the bottom right corner

References ili93xx_send_draw_limits(), limit_end_x, and limit_end_y.

void ili93xx_set_cursor_position	(	uint16_t	us_x,
		uint16_t	us_y
	)

Set cursor of LCD screen.

Parameters

us_x	X coordinate of upper-left corner on LCD.
us_y	Y coordinate of upper-left corner on LCD.

GRAM Horizontal/Vertical Address Set (R20h, R21h)

There is no corresponding operation for ILI9341.

References DEVICE_TYPE_ILI9325, DEVICE_TYPE_ILI9341, g_uc_device_type, ILI9325_HORIZONTAL_GRAM_ADDR_SET, ILI9325_VERTICAL_GRAM_ADDR_SET, and ili93xx_write_register_word().

Referenced by ili93xx_draw_filled_rectangle(), ili93xx_draw_pixel(), ili93xx_draw_pixmap(), ili93xx_fill(), ili93xx_get_pixel(), and ili93xx_init().

void ili93xx_set_display_direction	(	enum ili93xx_display_direction	e_dd,
		enum ili93xx_shift_direction	e_shd,
		enum ili93xx_scan_direction	e_scd
	)

Set display direction.

Parameters

e_dd	0: horizontal direction, 1: vertical direction
e_shd,:	horizontal increase(0) or decrease(1)
e_scd,:	vertical increase(1) or decrease(0)

References DEVICE_TYPE_ILI9325, DEVICE_TYPE_ILI9341, g_uc_device_type, g_ul_lcd_x_length, g_ul_lcd_y_length, H_INCREASE, ILI9325_DRIVER_OUTPUT_CTRL1, ILI9325_DRIVER_OUTPUT_CTRL1_SS, ILI9325_DRIVER_OUTPUT_CTRL2, ILI9325_DRIVER_OUTPUT_CTRL2_GS, ILI9325_DRIVER_OUTPUT_CTRL2_NL, ILI9325_ENTRY_MODE, ILI9325_ENTRY_MODE_AM, ILI9325_ENTRY_MODE_BGR, ILI9325_ENTRY_MODE_DFM, ILI9325_ENTRY_MODE_ID, ILI9325_ENTRY_MODE_TRI, ILI9341_CMD_MEMORY_ACCESS_CONTROL, ILI9341_CMD_MEMORY_ACCESS_CONTROL_BGR, ILI9341_CMD_MEMORY_ACCESS_CONTROL_MV, ILI9341_CMD_MEMORY_ACCESS_CONTROL_MX, ILI93XX_LCD_HEIGHT, ILI93XX_LCD_WIDTH, ili93xx_write_register(), ili93xx_write_register_word(), LANDSCAPE, and V_INCREASE.

void ili93xx_set_foreground_color ( ili93xx_color_t ul_color )

Set foreground color.

Parameters

ul_color foreground color.

Fill the cache with selected color

References g_ul_pixel_cache, and LCD_DATA_CACHE_SIZE.

Referenced by ili93xx_init().

void ili93xx_set_limits	(	ili93xx_coord_t	start_x,
		ili93xx_coord_t	start_y,
		ili93xx_coord_t	end_x,
		ili93xx_coord_t	end_y
	)

Set the full display drawing limits.

Use this function to set the full drawing limit box.

Parameters

start_x	The x coordinate of the top left corner
start_y	The y coordinate of the top left corner
end_x	The x coordinate of the bottom right corner
end_y	The y coordinate of the bottom right corner

References ili93xx_send_draw_limits(), limit_end_x, limit_end_y, limit_start_x, and limit_start_y.

void ili93xx_set_orientation ( uint8_t flags )

Sets the orientation of the display data.

Configures the display for a given orientation, including mirroring and/or screen rotation.

Parameters

flags Orientation flags to use, see ILI93XX_FLIP_X, ILI93XX_FLIP_Y and ILI93XX_SWITCH_XY.

References DEVICE_TYPE_ILI9325, g_uc_device_type, ILI9325_ENTRY_MODE, ILI9325_ENTRY_MODE_AM, ILI9325_ENTRY_MODE_BGR, ILI9325_ENTRY_MODE_DFM, ILI9325_ENTRY_MODE_ID, ILI9325_ENTRY_MODE_TRI, ILI9341_CMD_MEMORY_ACCESS_CONTROL, ILI93XX_FLIP_X, ILI93XX_FLIP_Y, ILI93XX_SWITCH_XY, ili93xx_write_register(), and ili93xx_write_register_word().