FT8xx co-processor

FT8xx co-processor engine functions. More...

Macros
#define	FT8XX_OPT_3D   0
	Co-processor widget is drawn in 3D effect.
#define	FT8XX_OPT_RGB565   0
	Co-processor option to decode the JPEG image to RGB565 format.
#define	FT8XX_OPT_MONO   1
	Co-processor option to decode the JPEG image to L8 format, i.e., monochrome.
#define	FT8XX_OPT_NODL   2
	No display list commands generated for bitmap decoded from JPEG image.
#define	FT8XX_OPT_FLAT   256
	Co-processor widget is drawn without 3D effect.
#define	FT8XX_OPT_SIGNED   256
	The number is treated as 32 bit signed integer.
#define	FT8XX_OPT_CENTERX   512
	Co-processor widget centers horizontally.
#define	FT8XX_OPT_CENTERY   1024
	Co-processor widget centers vertically.
#define	FT8XX_OPT_CENTER   1536
	Co-processor widget centers horizontally and vertically.
#define	FT8XX_OPT_RIGHTX   2048
	The label on the Coprocessor widget is right justified.
#define	FT8XX_OPT_NOBACK   4096
	Co-processor widget has no background drawn.
#define	FT8XX_OPT_NOTICKS   8192
	Co-processor clock widget is drawn without hour ticks.
#define	FT8XX_OPT_NOHM   16384
	Co-processor clock widget is drawn without hour and minutes hands, only seconds hand is drawn.
#define	FT8XX_OPT_NOPOINTER   16384
	The Co-processor gauge has no pointer.
#define	FT8XX_OPT_NOSECS   32768
	Co-processor clock widget is drawn without seconds hand.
#define	FT8XX_OPT_NOHANDS   49152
	Co-processor clock widget is drawn without hour, minutes and seconds hands.

Functions
void	ft8xx_copro_cmd (uint32_t cmd)
	Execute a display list command by co-processor engine.
void	ft8xx_copro_cmd_dlstart (void)
	Start a new display list.
void	ft8xx_copro_cmd_swap (void)
	Swap the current display list.
void	ft8xx_copro_cmd_text (int16_t x, int16_t y, int16_t font, uint16_t options, const char *s)
	Draw text.
void	ft8xx_copro_cmd_number (int16_t x, int16_t y, int16_t font, uint16_t options, int32_t n)
	Draw a decimal number.
void	ft8xx_copro_cmd_calibrate (uint32_t *result)
	Execute the touch screen calibration routine.

Detailed Description

FT8xx co-processor engine functions.

Macro Definition Documentation

FT8XX_OPT_3D

#define FT8XX_OPT_3D   0

#include <zephyr/drivers/misc/ft8xx/ft8xx_copro.h>

Co-processor widget is drawn in 3D effect.

FT8XX_OPT_CENTER

#define FT8XX_OPT_CENTER   1536

#include <zephyr/drivers/misc/ft8xx/ft8xx_copro.h>

Co-processor widget centers horizontally and vertically.

FT8XX_OPT_CENTERX

#define FT8XX_OPT_CENTERX   512

#include <zephyr/drivers/misc/ft8xx/ft8xx_copro.h>

Co-processor widget centers horizontally.

FT8XX_OPT_CENTERY

#define FT8XX_OPT_CENTERY   1024

#include <zephyr/drivers/misc/ft8xx/ft8xx_copro.h>

Co-processor widget centers vertically.

FT8XX_OPT_FLAT

#define FT8XX_OPT_FLAT   256

#include <zephyr/drivers/misc/ft8xx/ft8xx_copro.h>

Co-processor widget is drawn without 3D effect.

FT8XX_OPT_MONO

#define FT8XX_OPT_MONO   1

#include <zephyr/drivers/misc/ft8xx/ft8xx_copro.h>

Co-processor option to decode the JPEG image to L8 format, i.e., monochrome.

FT8XX_OPT_NOBACK

#define FT8XX_OPT_NOBACK   4096

#include <zephyr/drivers/misc/ft8xx/ft8xx_copro.h>

Co-processor widget has no background drawn.

FT8XX_OPT_NODL

#define FT8XX_OPT_NODL   2

#include <zephyr/drivers/misc/ft8xx/ft8xx_copro.h>

No display list commands generated for bitmap decoded from JPEG image.

FT8XX_OPT_NOHANDS

#define FT8XX_OPT_NOHANDS   49152

#include <zephyr/drivers/misc/ft8xx/ft8xx_copro.h>

Co-processor clock widget is drawn without hour, minutes and seconds hands.

FT8XX_OPT_NOHM

#define FT8XX_OPT_NOHM   16384

#include <zephyr/drivers/misc/ft8xx/ft8xx_copro.h>

Co-processor clock widget is drawn without hour and minutes hands, only seconds hand is drawn.

FT8XX_OPT_NOPOINTER

#define FT8XX_OPT_NOPOINTER   16384

#include <zephyr/drivers/misc/ft8xx/ft8xx_copro.h>

The Co-processor gauge has no pointer.

FT8XX_OPT_NOSECS

#define FT8XX_OPT_NOSECS   32768

#include <zephyr/drivers/misc/ft8xx/ft8xx_copro.h>

Co-processor clock widget is drawn without seconds hand.

FT8XX_OPT_NOTICKS

#define FT8XX_OPT_NOTICKS   8192

#include <zephyr/drivers/misc/ft8xx/ft8xx_copro.h>

Co-processor clock widget is drawn without hour ticks.

Gauge widget is drawn without major and minor ticks.

FT8XX_OPT_RGB565

#define FT8XX_OPT_RGB565   0

#include <zephyr/drivers/misc/ft8xx/ft8xx_copro.h>

Co-processor option to decode the JPEG image to RGB565 format.

FT8XX_OPT_RIGHTX

#define FT8XX_OPT_RIGHTX   2048

#include <zephyr/drivers/misc/ft8xx/ft8xx_copro.h>

The label on the Coprocessor widget is right justified.

FT8XX_OPT_SIGNED

#define FT8XX_OPT_SIGNED   256

#include <zephyr/drivers/misc/ft8xx/ft8xx_copro.h>

The number is treated as 32 bit signed integer.

Function Documentation

ft8xx_copro_cmd()

void ft8xx_copro_cmd

(

uint32_t

cmd

)

#include <zephyr/drivers/misc/ft8xx/ft8xx_copro.h>

Execute a display list command by co-processor engine.

Parameters

cmd	Display list command to execute

ft8xx_copro_cmd_calibrate()

void ft8xx_copro_cmd_calibrate

(

uint32_t *

result

)

#include <zephyr/drivers/misc/ft8xx/ft8xx_copro.h>

Execute the touch screen calibration routine.

The calibration procedure collects three touches from the touch screen, then computes and loads an appropriate matrix into REG_TOUCH_TRANSFORM_A-F. To use it, create a display list and then use CMD_CALIBRATE. The co-processor engine overlays the touch targets on the current display list, gathers the calibration input and updates REG_TOUCH_TRANSFORM_A-F.

Parameters

result

Calibration result, written with 0 on failure of calibration

ft8xx_copro_cmd_dlstart()

void ft8xx_copro_cmd_dlstart

(

void

)

#include <zephyr/drivers/misc/ft8xx/ft8xx_copro.h>

Start a new display list.

ft8xx_copro_cmd_number()

void ft8xx_copro_cmd_number	(	int16_t	x,
		int16_t	y,
		int16_t	font,
		uint16_t	options,
		int32_t	n
	)

#include <zephyr/drivers/misc/ft8xx/ft8xx_copro.h>

Draw a decimal number.

By default (x, y) is the top-left pixel of the text. FT8XX_OPT_CENTERX centers the text horizontally, FT8XX_OPT_CENTERY centers it vertically. FT8XX_OPT_CENTER centers the text in both directions. FT8XX_OPT_RIGHTX right-justifies the text, so that the x is the rightmost pixel. By default the number is displayed with no leading zeroes, but if a width 1-9 is specified in the options, then the number is padded if necessary with leading zeroes so that it has the given width. If FT8XX_OPT_SIGNED is given, the number is treated as signed, and prefixed by a minus sign if negative.

Parameters

x	x-coordinate of text base, in pixels
y	y-coordinate of text base, in pixels
font	Font to use for text, 0-31. 16-31 are ROM fonts
options	Options to apply
n	The number to display.

ft8xx_copro_cmd_swap()

void ft8xx_copro_cmd_swap

(

void

)

#include <zephyr/drivers/misc/ft8xx/ft8xx_copro.h>

Swap the current display list.

ft8xx_copro_cmd_text()

void ft8xx_copro_cmd_text	(	int16_t	x,
		int16_t	y,
		int16_t	font,
		uint16_t	options,
		const char *	s
	)

#include <zephyr/drivers/misc/ft8xx/ft8xx_copro.h>

Draw text.

By default (x, y) is the top-left pixel of the text and the value of options is zero. FT8XX_OPT_CENTERX centers the text horizontally, FT8XX_OPT_CENTERY centers it vertically. FT8XX_OPT_CENTER centers the text in both directions. FT8XX_OPT_RIGHTX right-justifies the text, so that the x is the rightmost pixel.

Parameters

x	x-coordinate of text base, in pixels
y	y-coordinate of text base, in pixels
font	Font to use for text, 0-31. 16-31 are ROM fonts
options	Options to apply
s	Character string to display, terminated with a null character