#include <TouchDrvGT9895.hpp>

Inheritance diagram for TouchDrvGT9895:

Public Member Functions
	TouchDrvGT9895 ()=default
	Constructor for the touch driver.

	~TouchDrvGT9895 ()=default
	Destructor for the touch driver.

void	sleep () override
	Puts the touch driver to sleep.

void	wakeup () override
	Wake up the touch driver.

const TouchPoints &	getTouchPoints () override
	Get the touch points.

const char *	getModelName () override
	Get the model name.

virtual uint8_t	getPoint (int16_t x_array, int16_t y_array, uint8_t get_point=1) __attribute__((deprecated("use getTouchPoints instead of getPoint")))
	Retrieve touch point coordinates (deprecated).

Public Member Functions inherited from TouchDrvInterface
	TouchDrvInterface ()
	Construct a new TouchDrvInterface object.

virtual	~TouchDrvInterface ()=default
	Destroy the TouchDrvInterface object.

virtual bool	begin (SensorCommCustom::CustomCallback callback, SensorCommCustomHal::CustomHalCallback hal_callback, uint8_t addr)
	Initialize the touch driver with custom communication callbacks.

virtual void	setGpioCallback (SensorHalCustom::CustomMode mode_cb, SensorHalCustom::CustomWrite write_cb, SensorHalCustom::CustomRead read_cb)
	Set custom GPIO callbacks for pin control (e.g., reset, interrupt).

virtual uint8_t	getSupportTouchPoint ()
	Get the maximum number of touch points supported by the hardware.

virtual void	getResolution (uint16_t &x, uint16_t &y)
	Get the raw resolution (maximum coordinate values) of the touch panel.

virtual uint16_t	getResolutionX ()
	Get the raw maximum X coordinate of the touch panel.

virtual uint16_t	getResolutionY ()
	Get the raw maximum Y coordinate of the touch panel.

virtual void	reset ()
	Reset the touch controller.

virtual bool	isPressed (uint32_t filter_ms=0)
	Check if any touch point is currently pressed.

virtual uint32_t	getChipID ()
	Get the chip identifier (e.g., ID register value).

virtual void	setPins (int rst, int irq)
	Set the hardware reset and interrupt pin numbers.

virtual const TouchPinsCfg &	getTouchPinsCfg () const
	Get the current touch pins configuration.

virtual void	setSwapXY (bool swap)
	Enable or disable swapping of X and Y coordinates.

virtual bool	isSwapXY () const
	Check if X and Y coordinates are swapped.

virtual void	setMirrorXY (bool mirrorX, bool mirrorY)
	Enable or disable mirroring of X and/or Y coordinates.

virtual bool	isMirrorX () const
	Check if X coordinates are mirrored.

virtual bool	isMirrorY () const
	Check if Y coordinates are mirrored.

virtual void	setMaxCoordinates (uint16_t x, uint16_t y)
	Set the maximum coordinate values used for mirroring.

virtual void	getMaxCoordinates (uint16_t &x, uint16_t &y)
	Get the maximum coordinates used for mirroring.

virtual uint16_t	getMaxX ()
	Get the maximum X coordinate (e.g., display width).

virtual uint16_t	getMaxY ()
	Get the maximum Y coordinate (e.g., display height).

virtual bool	isScalingEnabled ()
	Check if coordinate scaling is enabled.

virtual void	setResolution (uint16_t width, uint16_t height)
	Set the raw resolution of the touch panel (physical maximum coordinates).

virtual void	setTargetResolution (uint16_t width, uint16_t height)
	Set the target display resolution to map touch coordinates to screen pixels.

virtual void	updateXY (TouchPoints &points) const
	Apply coordinate transformations (swap, scale, mirror) to all touch points.

virtual void	setHomeButtonCallback (HomeButtonCallback cb, void *user_data)
	Register a callback for home button events.

virtual void	setCenterButtonCoordinate (int16_t x, int16_t y)
	Set the expected screen coordinates of a hardware home button.

Public Member Functions inherited from I2CDeviceWithHal
bool	begin (SensorCommCustom::CustomCallback cb, SensorCommCustomHal::CustomHalCallback hal_cb, uint8_t addr)
	Initialize the sensor using custom callback interface.

Public Member Functions inherited from DeviceBeginCommon
virtual	~DeviceBeginCommon ()

uint8_t	getAddress () const

uint8_t	getInterface () const

Public Member Functions inherited from SensorCommWrapper
	SensorCommWrapper ()=default

int	readReg (uint8_t reg) const

int	readRegBuff (uint8_t reg, uint8_t *buf, size_t len) const

int	readBuff (uint8_t *buf, size_t len) const

int	writeReg (uint8_t reg, uint8_t val)

int	writeRegBuff (uint8_t reg, uint8_t *buf, size_t len)

int	writeBuff (uint8_t *buf, size_t len)

int	writeThenRead (const uint8_t write_buffer, size_t write_len, uint8_t read_buffer, size_t read_len)

bool	setRegBit (uint8_t reg, uint8_t bit)

bool	clrRegBit (uint8_t reg, uint8_t bit)

bool	getRegBit (uint8_t reg, uint8_t bit)

int	updateBits (uint8_t reg, uint8_t mask, uint8_t value_shifted)

void	setAddress (uint8_t address)

void	setAck (bool enable)

Public Member Functions inherited from SensorCommInterface
virtual	~SensorCommInterface ()=default

Static Protected Attributes
static constexpr uint8_t	MAX_FINGER_NUM = (10)

static constexpr uint8_t	IRQ_EVENT_HEAD_LEN = (8)

static constexpr uint8_t	BYTES_PER_POINT = (8)

static constexpr uint8_t	COORDS_DATA_CHECKSUM_SIZE = (2)

static constexpr uint8_t	POINT_TYPE_STYLUS_HOVER = (1)

static constexpr uint8_t	POINT_TYPE_STYLUS = (3)

static constexpr uint32_t	REG_FW_VERSION = (0x010014)

static constexpr uint32_t	REG_INFO = (0x010070)

static constexpr uint32_t	REG_CMD = (0x010174)

static constexpr uint32_t	REG_POINT = (0x010308)

static constexpr uint32_t	REG_NUM_POINT = (0x01030A)

static constexpr uint32_t	CHIP_PID = (0x9895)

Additional Inherited Members
Public Types inherited from TouchDrvInterface
using	HomeButtonCallback = void()(void user_data)
	Callback type for home button events.

Protected Member Functions inherited from I2CDeviceWithHal
bool	ensureValid () const override
	Ensure the communication interface is valid.

Protected Member Functions inherited from DeviceBeginCommon
	DeviceBeginCommon ()=default

virtual SensorCommBase *	getComm () const override

virtual void	beforeBegin ()

virtual void	afterInitSuccess (uint8_t param)

virtual void	onBeginFail ()

bool	fail ()

void	clearCommState ()

template<typename CreateComm >
bool	beginLifecycle (uint8_t addr, uint8_t iface, uint8_t initParam, CreateComm createComm)

Protected Attributes inherited from TouchDrvInterface
SensorHalCustom::CustomMode	_halModeCallback
	Custom GPIO mode callback.

SensorHalCustom::CustomWrite	_halWriteCallback
	Custom GPIO write callback.

SensorHalCustom::CustomRead	_halReadCallback
	Custom GPIO read callback.

uint32_t	_chipID
	Chip identification value.

HomeButtonCallback	_HButtonCallback
	Home button callback function.

void *	_userData
	User data for home button callback.

uint8_t	_maxTouchPoints
	Maximum supported touch points.

int16_t	_center_btn_x
	X coordinate of home button center.

int16_t	_center_btn_y
	Y coordinate of home button center.

uint32_t	_lastPulse
	Timestamp of the last touch event.

TouchPinsCfg	_pinsCfg
	Configuration for reset and interrupt pins.

TouchConfig	_touchConfig
	Configuration for coordinate transformations.

TouchPoints	_touchPoints
	Touch points data.

Protected Attributes inherited from DeviceBeginCommon
std::unique_ptr< SensorCommBase >	comm

std::unique_ptr< SensorHal >	hal

std::unique_ptr< SensorCommStatic >	staticComm

uint8_t	_addr = 0

uint8_t	_iface = COMM_CUSTOM

Detailed Description

Definition at line 40 of file touch/TouchDrvGT9895.hpp.

Constructor & Destructor Documentation

◆ TouchDrvGT9895()

TouchDrvGT9895::TouchDrvGT9895 ( )

default

Constructor for the touch driver.

Return values

None

◆ ~TouchDrvGT9895()

TouchDrvGT9895::~TouchDrvGT9895 ( )

default

Destructor for the touch driver.

Return values

None

Member Function Documentation

◆ getModelName()

const char * TouchDrvGT9895::getModelName ( )

overridevirtual

Get the model name.

Note: This function will retrieve the model name from the touch driver.

Return values

The	model name.

Implements TouchDrvInterface.

Definition at line 126 of file TouchDrvGT9895.cpp.

◆ getPoint()

virtual uint8_t TouchDrvInterface::getPoint	(	int16_t *	x_array,
		int16_t *	y_array,
		uint8_t	get_point = `1`
	)

inlinevirtual

Retrieve touch point coordinates (deprecated).

Deprecated:: Use getTouchPoints() instead, which returns a richer TouchPoints object.

Parameters

[out]	x_array	Pointer to array to store X coordinates.
[out]	y_array	Pointer to array to store Y coordinates.
	get_point	Number of points to retrieve (max).

Returns: uint8_t Actual number of touch points detected.

Reimplemented from TouchDrvInterface.

Definition at line 288 of file touch/TouchDrvInterface.hpp.

◆ getTouchPoints()

const TouchPoints & TouchDrvGT9895::getTouchPoints ( )

overridevirtual

Get the touch points.

Note: This function will retrieve the touch points from the touch driver. TouchPoints is configured with a 5-point touch point buffer by default, so it can return touch data from a maximum of 5 points. Although the GT9895 supports 10-point touch

Return values

A	reference to the touch points.

Implements TouchDrvInterface.

Definition at line 63 of file TouchDrvGT9895.cpp.

References TouchDrvInterface::_touchPoints, TouchPoints::addPoint(), addrToBeBuf(), BYTES_PER_POINT, TouchPoints::clear(), COORDS_DATA_CHECKSUM_SIZE, i, IRQ_EVENT_HEAD_LEN, MAX_FINGER_NUM, POINT_TYPE_STYLUS, POINT_TYPE_STYLUS_HOVER, REG_POINT, TouchDrvInterface::updateXY(), SensorCommWrapper::writeThenRead(), x, and y.

Referenced by loop().

◆ sleep()

void TouchDrvGT9895::sleep ( )

overridevirtual

Puts the touch driver to sleep.

Note: This function puts the touch driver into sleep mode. If the device does not have a reset pin connected, it cannot be woken up after being put into sleep mode and must be powered on again.

Return values

None

Implements TouchDrvInterface.

Definition at line 35 of file TouchDrvGT9895.cpp.

References TouchDrvInterface::_pinsCfg, addrToBeBuf(), DeviceBeginCommon::hal, TouchDrvInterface::TouchPinsCfg::irqPin, REG_CMD, and SensorCommWrapper::writeBuff().

◆ wakeup()

void TouchDrvGT9895::wakeup ( )

overridevirtual

Wake up the touch driver.

Note: This function will wake up the touch driver from sleep mode.

Return values

None

Reimplemented from TouchDrvInterface.

Definition at line 53 of file TouchDrvGT9895.cpp.

References TouchDrvInterface::_pinsCfg, DeviceBeginCommon::hal, TouchDrvInterface::TouchPinsCfg::irqPin, and TouchDrvInterface::reset().

Member Data Documentation

◆ BYTES_PER_POINT

constexpr uint8_t TouchDrvGT9895::BYTES_PER_POINT = (8)

staticconstexprprotected

Definition at line 126 of file touch/TouchDrvGT9895.hpp.

Referenced by getTouchPoints().

◆ CHIP_PID

constexpr uint32_t TouchDrvGT9895::CHIP_PID = (0x9895)

staticconstexprprotected

Definition at line 138 of file touch/TouchDrvGT9895.hpp.

◆ COORDS_DATA_CHECKSUM_SIZE

constexpr uint8_t TouchDrvGT9895::COORDS_DATA_CHECKSUM_SIZE = (2)

staticconstexprprotected

Definition at line 127 of file touch/TouchDrvGT9895.hpp.

Referenced by getTouchPoints().

◆ IRQ_EVENT_HEAD_LEN

constexpr uint8_t TouchDrvGT9895::IRQ_EVENT_HEAD_LEN = (8)

staticconstexprprotected

Definition at line 125 of file touch/TouchDrvGT9895.hpp.

Referenced by getTouchPoints().

◆ MAX_FINGER_NUM

constexpr uint8_t TouchDrvGT9895::MAX_FINGER_NUM = (10)

staticconstexprprotected

Definition at line 124 of file touch/TouchDrvGT9895.hpp.

Referenced by getTouchPoints().

◆ POINT_TYPE_STYLUS

constexpr uint8_t TouchDrvGT9895::POINT_TYPE_STYLUS = (3)

staticconstexprprotected

Definition at line 130 of file touch/TouchDrvGT9895.hpp.

Referenced by getTouchPoints().

◆ POINT_TYPE_STYLUS_HOVER

constexpr uint8_t TouchDrvGT9895::POINT_TYPE_STYLUS_HOVER = (1)

staticconstexprprotected

Definition at line 129 of file touch/TouchDrvGT9895.hpp.

Referenced by getTouchPoints().

◆ REG_CMD

constexpr uint32_t TouchDrvGT9895::REG_CMD = (0x010174)

staticconstexprprotected

Definition at line 134 of file touch/TouchDrvGT9895.hpp.

Referenced by sleep().

◆ REG_FW_VERSION

constexpr uint32_t TouchDrvGT9895::REG_FW_VERSION = (0x010014)

staticconstexprprotected

Definition at line 132 of file touch/TouchDrvGT9895.hpp.

◆ REG_INFO

constexpr uint32_t TouchDrvGT9895::REG_INFO = (0x010070)

staticconstexprprotected

Definition at line 133 of file touch/TouchDrvGT9895.hpp.

◆ REG_NUM_POINT

constexpr uint32_t TouchDrvGT9895::REG_NUM_POINT = (0x01030A)

staticconstexprprotected

Definition at line 136 of file touch/TouchDrvGT9895.hpp.

◆ REG_POINT

constexpr uint32_t TouchDrvGT9895::REG_POINT = (0x010308)

staticconstexprprotected

Definition at line 135 of file touch/TouchDrvGT9895.hpp.

Referenced by getTouchPoints().

The documentation for this class was generated from the following files:

Public Member Functions

Static Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ TouchDrvGT9895()

◆ ~TouchDrvGT9895()

Member Function Documentation

◆ getModelName()

◆ getPoint()

◆ getTouchPoints()

◆ sleep()

◆ wakeup()

Member Data Documentation

◆ BYTES_PER_POINT

◆ CHIP_PID

◆ COORDS_DATA_CHECKSUM_SIZE

◆ IRQ_EVENT_HEAD_LEN

◆ MAX_FINGER_NUM

◆ POINT_TYPE_STYLUS

◆ POINT_TYPE_STYLUS_HOVER

◆ REG_CMD

◆ REG_FW_VERSION

◆ REG_INFO

◆ REG_NUM_POINT

◆ REG_POINT