Display - ILI9488 Controller

Low-level driver for the ILI9488 LCD controller.

This driver provides access to the main features of the ILI9488 controller.

Macros
#define	LCD_DATA_CACHE_SIZE   ILI9488_LCD_WIDTH

Functions
static void	ili9488_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	ili9488_copy_pixels_from_screen (uint16_t *pixels, uint32_t count)
	Copy pixels from the screen to a pixel buffer. More...
void	ili9488_copy_pixels_to_screen (const uint16_t *pixels, uint32_t count)
	Copy pixels from SRAM to the screen. More...
void	ili9488_delay (uint32_t ul_ms)
	Delay function. More...
void	ili9488_display_off (void)
	Turn off the LCD. More...
void	ili9488_display_on (void)
	Turn on the LCD. More...
static void	ili9488_draw_char (uint32_t ul_x, uint32_t ul_y, uint8_t uc_c)
	Draw an ASCII character on LCD. More...
uint32_t	ili9488_draw_circle (uint32_t ul_x, uint32_t ul_y, uint32_t ul_r)
	Draw a circle on LCD. More...
uint32_t	ili9488_draw_filled_circle (uint32_t ul_x, uint32_t ul_y, uint32_t ul_r)
	Draw a filled circle on LCD. More...
void	ili9488_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	ili9488_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	ili9488_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	ili9488_draw_pixel (uint32_t ul_x, uint32_t ul_y)
	Draw a pixel on LCD. More...
void	ili9488_draw_pixmap (uint32_t ul_x, uint32_t ul_y, uint32_t ul_width, uint32_t ul_height, const ili9488_color_t *p_ul_pixmap)
	Draw a pixmap on LCD. More...
void	ili9488_draw_prepare (uint32_t ul_x, uint32_t ul_y, uint32_t ul_width, uint32_t ul_height)
	Prepare LCD to draw. More...
void	ili9488_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	ili9488_draw_string (uint32_t ul_x, uint32_t ul_y, const uint8_t *p_str)
	Draw a string on LCD. More...
void	ili9488_duplicate_pixel (const uint16_t color, uint32_t count)
	Set a given number of pixels to the same color. More...
void	ili9488_fill (ili9488_color_t ul_color)
	Fill the LCD buffer with the specified color. More...
ili9488_color_t	ili9488_get_pixel (uint32_t ul_x, uint32_t ul_y)
	Get a pixel from LCD. More...
uint32_t	ili9488_init (struct ili9488_opt_t *p_opt)
	Initialize the ILI9488 lcd driver. More...
static uint32_t	ili9488_read_chipid (void)
	Read chipid. More...
uint16_t	ili9488_read_gram (void)
	Read a single color from the graphical memory. More...
static uint32_t	ili9488_read_ram (void)
	Read data to LCD GRAM. More...
void	ili9488_scroll (uint16_t ul_tfa, uint16_t ul_vsa, uint16_t ul_bfa)
	Scroll up/down for the number of specified lines. More...
void	ili9488_set_bottom_right_limit (ili9488_coord_t x, ili9488_coord_t y)
	Set the display bottom right drawing limit. More...
void	ili9488_set_cursor_position (uint16_t x, uint16_t y)
	Set cursor of LCD screen. More...
void	ili9488_set_display_direction (enum ili9488_display_direction direction)
	ILI9488 configure landscape. More...
void	ili9488_set_foreground_color (uint32_t ul_color)
	Set foreground color. More...
void	ili9488_set_limits (ili9488_coord_t start_x, ili9488_coord_t start_y, ili9488_coord_t end_x, ili9488_coord_t end_y)
	Set the full display drawing limits. More...
void	ili9488_set_orientation (uint8_t flags)
	Sets the orientation of the display data. More...
void	ili9488_set_scroll_address (uint16_t ul_vsp)
	Enable the scrolling feature. More...
void	ili9488_set_top_left_limit (ili9488_coord_t x, ili9488_coord_t y)
	Set the display top left drawing limit. More...
void	ili9488_set_window (uint16_t x, uint16_t y, uint16_t width, uint16_t height)
	ILI9488 configure window. More...
void	ili9488_write_brightness (uint16_t us_value)
	Set display brightness. More...
void	ili9488_write_gram (uint16_t color)
	Write the graphical memory with a single color pixel. More...
static void	ili9488_write_ram (ili9488_color_t ul_color)
	Write data to LCD GRAM. More...
static void	ili9488_write_ram_buffer (const ili9488_color_t *p_ul_buf, uint32_t ul_size)
	Write multiple data in buffer to LCD controller. More...
static void	ili9488_write_ram_prepare (void)
	Prepare to write GRAM data. More...
static void	ili9488_write_register (uint8_t uc_reg, const ili9488_color_t *us_data, uint32_t size)
	Write data to LCD Register. More...

Variables
static ili9488_color_t	g_ul_pixel_cache [LCD_DATA_CACHE_SIZE *LCD_DATA_COLOR_UNIT]
struct ili9488_font	gfont = {10, 14}
static ili9488_coord_t	limit_end_x
static ili9488_coord_t	limit_end_y
static ili9488_coord_t	limit_start_x
static ili9488_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 LCD_DATA_CACHE_SIZE   ILI9488_LCD_WIDTH

Referenced by ili9488_draw_filled_rectangle(), and ili9488_set_foreground_color().

static void ili9488_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 ILI9488_LCD_HEIGHT, and ILI9488_LCD_WIDTH.

Referenced by ili9488_draw_filled_rectangle(), ili9488_draw_pixmap(), and ili9488_draw_rectangle().

void ili9488_copy_pixels_from_screen	(	uint16_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.

Limits have to be set prior to calling this function, e.g.:

* ili9488_set_top_left_limit(0, 0);
* ili9488_set_bottom_right_limit(320, 240);
* ...
* 

Parameters

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

References BOARD_ILI9488_SPI, ILI9488_CMD_MEMORY_READ, ILI9488_COLOR, ili9488_set_window(), ili9488_write_register(), LCD_SPI_CDS_PIO, PIN_EBI_CDS_MASK, PIN_EBI_CDS_PIO, pio_set(), pio_set_pin_high(), and spi_read_packet().

void ili9488_copy_pixels_to_screen	(	const uint16_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.

Limits have to be set prior to calling this function, e.g.:

* ili9488_set_top_left_limit(0, 0);
* ili9488_set_bottom_right_limit(320, 240);
* ...
* 

Parameters

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

References ILI9488_CMD_MEMORY_WRITE, ili9488_set_window(), ili9488_write_ram(), ili9488_write_ram_prepare(), ili9488_write_register(), LCD_DATA_COLOR_UNIT, and RGB_16_TO_18BIT.

void ili9488_delay

(

uint32_t

ul_ms

)

Delay function.

Referenced by ili9488_init().

void ili9488_display_off

(

void

)

Turn off the LCD.

References ILI9488_CMD_DISPLAY_OFF, and ili9488_write_register().

void ili9488_display_on

(

void

)

Turn on the LCD.

References ILI9488_CMD_DISPLAY_ON, and ili9488_write_register().

Referenced by ili9488_init().

static void ili9488_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.

References ili9488_draw_pixel().

Referenced by ili9488_draw_string().

uint32_t ili9488_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 ili9488_draw_pixel().

uint32_t ili9488_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 ili9488_draw_filled_rectangle().

void ili9488_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.

References ili9488_check_box_coordinates(), ILI9488_LCD_HEIGHT, ILI9488_LCD_WIDTH, ili9488_set_window(), ili9488_write_ram_buffer(), ili9488_write_ram_prepare(), LCD_DATA_CACHE_SIZE, and LCD_DATA_COLOR_UNIT.

Referenced by ili9488_draw_filled_circle(), ili9488_draw_line(), ili9488_draw_rectangle(), main(), and refresh_display().

void ili9488_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 ili9488_draw_filled_rectangle(), and ili9488_draw_line_bresenham().

static void ili9488_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 ili9488_draw_pixel().

Referenced by ili9488_draw_line().

uint32_t ili9488_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.

References ILI9488_LCD_HEIGHT, ILI9488_LCD_WIDTH, ili9488_set_cursor_position(), ili9488_write_ram_buffer(), ili9488_write_ram_prepare(), and LCD_DATA_COLOR_UNIT.

Referenced by ili9488_draw_char(), ili9488_draw_circle(), ili9488_draw_line_bresenham(), and ili9488_draw_number().

void ili9488_draw_pixmap	(	uint32_t	ul_x,
		uint32_t	ul_y,
		uint32_t	ul_width,
		uint32_t	ul_height,
		const ili9488_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.

References ili9488_check_box_coordinates(), ILI9488_CMD_MEMORY_WRITE, ILI9488_LCD_HEIGHT, ILI9488_LCD_WIDTH, ili9488_set_window(), ili9488_write_register(), and LCD_DATA_COLOR_UNIT.

Referenced by main(), and refresh_display().

void ili9488_draw_prepare	(	uint32_t	ul_x,
		uint32_t	ul_y,
		uint32_t	ul_width,
		uint32_t	ul_height
	)

Prepare LCD to draw.

Parameters

ul_x	Horizontal address start position
ul_y	Vertical address start position
ul_width	The width of the window.
ul_height	The height of the window.

References ili9488_set_cursor_position(), ili9488_set_window(), and ili9488_write_ram_prepare().

void ili9488_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 ili9488_check_box_coordinates(), and ili9488_draw_filled_rectangle().

void ili9488_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.

References ili9488_font::height, ili9488_draw_char(), and ili9488_font::width.

Referenced by main(), refresh_display(), and wifi_connect().

void ili9488_duplicate_pixel	(	const uint16_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.

Limits have to be set prior to calling this function, e.g.:

* ili9488_set_top_left_limit(0, 0);
* ili9488_set_bottom_right_limit(320, 240);
* ...
* 

Parameters

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

References ili9488_set_window(), ili9488_write_ram(), ili9488_write_ram_prepare(), and RGB_16_TO_18BIT.

void ili9488_fill

(

ili9488_color_t

ul_color

)

Fill the LCD buffer with the specified color.

Parameters

ul_color

fill color.

References ILI9488_LCD_HEIGHT, ILI9488_LCD_WIDTH, ili9488_set_cursor_position(), ili9488_write_ram(), and ili9488_write_ram_prepare().

ili9488_color_t ili9488_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.

References Assert, ILI9488_LCD_HEIGHT, ILI9488_LCD_WIDTH, ili9488_read_ram(), and ili9488_set_cursor_position().

uint32_t ili9488_init

(

struct ili9488_opt_t *

p_opt

)

Initialize the ILI9488 lcd driver.

Note

Make sure below works have been done before calling ili9488_init()

1. ILI9488 related Pins have been initialized correctly.
   
2. SMC has been configured correctly for access ILI9488 (16-bit system interface for now).
   

Parameters

p_opt

pointer to ILI9488 option structure.

Returns

0 if initialization succeeds, otherwise fails.

read chipid

make it tRGB and reverse the column order

References BOARD_ILI9488_SPI, BOARD_ILI9488_SPI_NPCS, ili9488_opt_t::foreground_color, spi_device::id, ILI9488_CMD_CABC_CONTROL_9, ILI9488_CMD_COLMOD_PIXEL_FORMAT_SET, ILI9488_CMD_MEMORY_ACCESS_CONTROL, ILI9488_CMD_NORMAL_DISP_MODE_ON, ILI9488_CMD_PARTIAL_MODE_ON, ILI9488_CMD_SLEEP_OUT, ILI9488_CMD_SOFTWARE_RESET, ili9488_delay(), ILI9488_DEVICE_CODE, ili9488_display_on(), ili9488_read_chipid(), ili9488_set_cursor_position(), ili9488_set_display_direction(), ili9488_set_foreground_color(), ili9488_set_window(), ILI9488_SPI_BAUDRATE, ili9488_write_register(), LANDSCAPE, pmc_enable_periph_clk(), spi_configure_cs_behavior(), SPI_CS_RISE_NO_TX, spi_enable(), spi_enable_interrupt(), spi_master_init(), spi_master_setup_device(), SPI_MODE_3, spi_select_device(), ili9488_opt_t::ul_height, and ili9488_opt_t::ul_width.

Referenced by main().

static uint32_t ili9488_read_chipid ( void  )

static

Read chipid.

Returns

chipid value.

References BOARD_ILI9488_SPI, ILI9488_CMD_READ_ID4, ILI9488_CMD_SPI_READ_SETTINGS, ili9488_write_register(), LCD_SPI_CDS_PIO, pio_set_pin_high(), and spi_read_packet().

Referenced by ili9488_init().

uint16_t ili9488_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.

Limits have to be set prior to calling this function, e.g.:

* ili9488_set_top_left_limit(0, 0);
* ili9488_set_bottom_right_limit(320, 240);
* ...
* 

Return values

ili9488_color_t

The read color pixel

References ili9488_read_ram(), and ili9488_set_cursor_position().

static uint32_t ili9488_read_ram ( void  )

static

Read data to LCD GRAM.

Note

Because pixel data LCD GRAM is 18-bits, so convertion to RGB565 16-bits will cause low color bit lose.

Returns

color 16-bits RGB color.

References BOARD_ILI9488_SPI, ILI9488_CMD_MEMORY_READ, ILI9488_COLOR, ili9488_write_register(), LCD_SPI_CDS_PIO, pio_set_pin_high(), and spi_read_packet().

Referenced by ili9488_get_pixel(), and ili9488_read_gram().

void ili9488_scroll	(	uint16_t	ul_tfa,
		uint16_t	ul_vsa,
		uint16_t	ul_bfa
	)

Scroll up/down for the number of specified lines.

Parameters

ul_tfa	Top Fixed Area in number of lines from the top of the frame memory.
ul_lines	number of lines to scroll.
ul_bfa	bottom Fixed Area in number of lines from the bottom of the frame memory.

References get_0b_to_8b, get_8b_to_16b, ILI9488_CMD_VERT_SCROLL_DEFINITION, and ili9488_write_register().

void ili9488_set_bottom_right_limit	(	ili9488_coord_t	x,
		ili9488_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

void ili9488_set_cursor_position	(	uint16_t	x,
		uint16_t	y
	)

Set cursor of LCD screen.

Parameters

x	X coordinate of upper-left corner on LCD.
y	Y coordinate of upper-left corner on LCD.

References get_0b_to_8b, get_8b_to_16b, ILI9488_CMD_COLUMN_ADDRESS_SET, ILI9488_CMD_NOP, ILI9488_CMD_PAGE_ADDRESS_SET, and ili9488_write_register().

Referenced by ili9488_draw_pixel(), ili9488_draw_prepare(), ili9488_fill(), ili9488_get_pixel(), ili9488_init(), ili9488_read_gram(), and ili9488_write_gram().

void ili9488_set_display_direction

(

enum ili9488_display_direction

direction

)

ILI9488 configure landscape.

LandscaprMode Landscape Mode.

References ILI9488_CMD_MEMORY_ACCESS_CONTROL, and ili9488_write_register().

Referenced by ili9488_init().

void ili9488_set_foreground_color

(

uint32_t

ul_color

)

Set foreground color.

Parameters

ul_color

foreground color.

References LCD_DATA_CACHE_SIZE, and LCD_DATA_COLOR_UNIT.

Referenced by ili9488_init(), main(), refresh_display(), and wifi_connect().

void ili9488_set_limits	(	ili9488_coord_t	start_x,
		ili9488_coord_t	start_y,
		ili9488_coord_t	end_x,
		ili9488_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

void ili9488_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 ILI9488_FLIP_X, ILI9488_FLIP_Y and ILI9488_SWITCH_XY.

References ILI9488_CMD_MEMORY_ACCESS_CONTROL, ILI9488_FLIP_X, ILI9488_FLIP_Y, ILI9488_SWITCH_XY, and ili9488_write_register().

void ili9488_set_scroll_address

(

uint16_t

ul_vsp

)

Enable the scrolling feature.

Parameters

ul_vsp

Vertical Scrolling Start Address

References get_0b_to_8b, get_8b_to_16b, ILI9488_CMD_VERT_SCROLL_START_ADDRESS, and ili9488_write_register().

void ili9488_set_top_left_limit	(	ili9488_coord_t	x,
		ili9488_coord_t	y
	)

Set the display top left drawing limit.

Use this function to set the top left limit of the drawing limit box.

Parameters

x	The x coordinate of the top left corner
y	The y coordinate of the top left corner

void ili9488_set_window	(	uint16_t	x,
		uint16_t	y,
		uint16_t	width,
		uint16_t	height
	)

ILI9488 configure window.

x start position. y start position. width Width of window. height Height of window.

References get_0b_to_8b, get_8b_to_16b, ILI9488_CMD_COLUMN_ADDRESS_SET, ILI9488_CMD_NOP, ILI9488_CMD_PAGE_ADDRESS_SET, and ili9488_write_register().

Referenced by ili9488_copy_pixels_from_screen(), ili9488_copy_pixels_to_screen(), ili9488_draw_filled_rectangle(), ili9488_draw_pixmap(), ili9488_draw_prepare(), ili9488_duplicate_pixel(), and ili9488_init().

void ili9488_write_brightness

(

uint16_t

us_value

)

Set display brightness.

Configures the display for a given brightness value

Parameters

us_value

brightness value need to written.

References ILI9488_CMD_WRITE_DISPLAY_BRIGHTNESS, and ili9488_write_register().

void ili9488_write_gram

(

uint16_t

color

)

Write the graphical memory with a single color pixel.

Use this function to write a single color pixel to the controller memory.

Limits have to be set prior to calling this function, e.g.:

* ili9488_set_top_left_limit(0, 0);
* ili9488_set_bottom_right_limit(320, 240);
* ...
* 

Parameters

color

The color pixel to write to the screen

References ili9488_set_cursor_position(), ili9488_write_ram(), ili9488_write_ram_prepare(), and RGB_16_TO_18BIT.

static void ili9488_write_ram ( ili9488_color_t  ul_color )

static

Write data to LCD GRAM.

Parameters

ul_color

16-bits RGB color.

References BOARD_ILI9488_SPI, BOARD_ILI9488_SPI_NPCS, LCD_SPI_CDS_PIO, pio_set_pin_high(), and spi_write().

Referenced by ili9488_copy_pixels_to_screen(), ili9488_duplicate_pixel(), ili9488_fill(), and ili9488_write_gram().

static void ili9488_write_ram_buffer ( const ili9488_color_t *  p_ul_buf, uint32_t  ul_size  )

static

Write multiple data in buffer to LCD controller.

Parameters

p_ul_buf	data buffer.
ul_size	size in pixels.

References BOARD_ILI9488_SPI, LCD_SPI_CDS_PIO, pio_set_pin_high(), and spi_write_packet().

Referenced by ili9488_draw_filled_rectangle(), and ili9488_draw_pixel().

static void ili9488_write_ram_prepare ( void  )

static

Prepare to write GRAM data.

References BOARD_ILI9488_SPI, BOARD_ILI9488_SPI_NPCS, ILI9488_CMD_MEMORY_WRITE, LCD_SPI_CDS_PIO, pio_set_pin_low(), and spi_write().

Referenced by ili9488_copy_pixels_to_screen(), ili9488_draw_filled_rectangle(), ili9488_draw_pixel(), ili9488_draw_prepare(), ili9488_duplicate_pixel(), ili9488_fill(), and ili9488_write_gram().

static void ili9488_write_register ( uint8_t  uc_reg, const ili9488_color_t *  us_data, uint32_t  size  )

static

Write data to LCD Register.

Parameters

uc_reg	register address.
us_data	data to be written.
size	the number of parameters.

References BOARD_ILI9488_SPI, BOARD_ILI9488_SPI_NPCS, LCD_SPI_CDS_PIO, pio_set_pin_high(), pio_set_pin_low(), spi_write(), and spi_write_packet().

Referenced by ili9488_copy_pixels_from_screen(), ili9488_copy_pixels_to_screen(), ili9488_display_off(), ili9488_display_on(), ili9488_draw_pixmap(), ili9488_init(), ili9488_read_chipid(), ili9488_read_ram(), ili9488_scroll(), ili9488_set_cursor_position(), ili9488_set_display_direction(), ili9488_set_orientation(), ili9488_set_scroll_address(), ili9488_set_window(), and ili9488_write_brightness().

ili9488_color_t g_ul_pixel_cache[LCD_DATA_CACHE_SIZE *LCD_DATA_COLOR_UNIT]

static

struct ili9488_font gfont = {10, 14}

ili9488_coord_t limit_end_x

static

ili9488_coord_t limit_end_y

static

ili9488_coord_t limit_start_x

static

ili9488_coord_t limit_start_y

static

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).

Char width is 10 bits.