EW_BSP_TOUCH

Collaboration diagram for EW_BSP_TOUCH:

Data Structures
struct	XTouchData
struct	XTouchEvent

Macros
#define	TS_I2C_ADDRESS   0x70U
#define	NO_OF_FINGERS   FT6X06_MAX_NB_TOUCH
#define	DELTA_TOUCH   16
#define	DELTA_TIME   500
#define	EW_BSP_TOUCH_IDLE   0
#define	EW_BSP_TOUCH_HOLD   4
#define	EW_BSP_TOUCH_DOWN   1
#define	EW_BSP_TOUCH_MOVE   2
#define	EW_BSP_TOUCH_UP   3

Functions
void	EwBspTouchInit (int aWidth, int aHeight)
	Initializes the touch driver. More...
void	EwBspTouchDone (void)
	Terminates the touch driver. More...
int	EwBspTouchGetEvents (XTouchEvent **aTouchEvent)
	The function EwBspTouchGetEvents reads the current touch positions from the touch driver and returns the current touch position and touch status of the different fingers. The returned number of touch events indicates the number of XTouchEvent that contain position and status information. The orientation of the touch positions is adjusted to match GUI coordinates. If the hardware supports only single touch, the finger number is always 0. More...
void	EwBspTouchEventHandler (int aEventId)

Variables
static int	TouchAreaWidth = 0
static int	TouchAreaHeight = 0
static XTouchEvent	TouchEvent [NO_OF_FINGERS]
static XTouchData	TouchData [NO_OF_FINGERS]
static FT6X06_Object_t	FT6X06Obj

Detailed Description

Macro Definition Documentation

DELTA_TIME

#define DELTA_TIME   500

additional touch flag to indicate idle state

DELTA_TOUCH

#define DELTA_TOUCH   16

EW_BSP_TOUCH_DOWN

#define EW_BSP_TOUCH_DOWN   1

EW_BSP_TOUCH_HOLD

#define EW_BSP_TOUCH_HOLD   4

structure to store internal touch information for one finger

EW_BSP_TOUCH_IDLE

#define EW_BSP_TOUCH_IDLE   0

additional touch flag to indicate hold state

EW_BSP_TOUCH_MOVE

#define EW_BSP_TOUCH_MOVE   2

EW_BSP_TOUCH_UP

#define EW_BSP_TOUCH_UP   3

NO_OF_FINGERS

#define NO_OF_FINGERS   FT6X06_MAX_NB_TOUCH

TS_I2C_ADDRESS

#define TS_I2C_ADDRESS   0x70U

Function Documentation

EwBspTouchDone()

void EwBspTouchDone

(

void

)

Terminates the touch driver.

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EwBspTouchEventHandler()

void EwBspTouchEventHandler

(

int

aEventId

)

EwBspTouchGetEvents()

int EwBspTouchGetEvents

(

XTouchEvent **

aTouchEvent

)

The function EwBspTouchGetEvents reads the current touch positions from the touch driver and returns the current touch position and touch status of the different fingers. The returned number of touch events indicates the number of XTouchEvent that contain position and status information. The orientation of the touch positions is adjusted to match GUI coordinates. If the hardware supports only single touch, the finger number is always 0.

Parameters

aTouchEvent

Pointer to return array of XTouchEvent.

Returns

int - Returns the number of detected touch events, otherwise 0.

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References CPU_LOAD_SET_ACTIVE, CPU_LOAD_SET_IDLE, DELTA_TIME, DELTA_TOUCH, EW_BSP_TOUCH_DOWN, EW_BSP_TOUCH_HOLD, EW_BSP_TOUCH_IDLE, EW_BSP_TOUCH_MOVE, EW_BSP_TOUCH_UP, EwGetTicks(), XTouchEvent::Finger, FT6X06Obj, NO_OF_FINGERS, XTouchData::State, XTouchEvent::State, XTouchData::Ticks, TouchAreaHeight, TouchAreaWidth, TouchData, TouchEvent, XTouchData::TouchId, XTouchData::XPos, XTouchEvent::XPos, XTouchData::YPos, and XTouchEvent::YPos.

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EwBspTouchInit()

void EwBspTouchInit	(	int	aWidth,
		int	aHeight
	)

Initializes the touch driver.

Parameters

aWidth	Width of the toucharea (framebuffer) in pixel.
aHeight	Width of the toucharea (framebuffer) in pixel.

---

References FT6X06Obj, TouchAreaHeight, TouchAreaWidth, TouchEvent, and TS_I2C_ADDRESS.

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Variable Documentation

FT6X06Obj

FT6X06_Object_t FT6X06Obj

static

TouchAreaHeight

int TouchAreaHeight = 0

static

TouchAreaWidth

int TouchAreaWidth = 0

static

TouchData

XTouchData TouchData[NO_OF_FINGERS]

static

TouchEvent

XTouchEvent TouchEvent[NO_OF_FINGERS]

static