otXPT2046 Class Reference
[XPT2046 - Library for touch screen controller, XPT2046 - Library for touch screen controller]

Class that allows to use XPT2046 touch screen controller.

#include <otXPT2046.h>

Public Types
enum	rotation_t { ROT0, ROT90, ROT180, ROT270 }
Public Member Functions
	otXPT2046 ()
	Create the object.
bool	rawData (U16 &_x, U16 &_y, U16 &_z)
bool	position (U16 &x, U16 &y)
void	init (U16 w, U16 h)
void	setThreshold (int t)
void	setCalibration (U16 vy1, U16 vx1, U16 vy2, U16 vx2)
void	getCalibration (U16 &x1, U16 &y1, U16 &x2, U16 &y2)
void	setRotation (rotation_t rot)

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Member Enumeration Documentation

enum otXPT2046::rotation_t

Enumeration values: ROT0  Don't apply any coordinate rotation. ROT90  Coordinate are rotated by 90 degree. ROT180  Coordinate are rotated by 180 degree. ROT270  Coordinate are rotated by 270 degree.

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Constructor & Destructor Documentation

otXPT2046.otXPT2046 (   )

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Member Function Documentation

void otXPT2046.getCalibration (  U16 &  x1, U16 &  y1, U16 &  x2, U16 &  y2 )

Procedure to read calibration points Parameters: x1  Return the vertical start position y1  Return the horizontal start position x2  Return the vertical end position y2  Return the horizontal end position

void otXPT2046.init (  U16  w, U16  h )

Initialize the object Parameters: w  Touch screen width as pixel h  Touch screen height as pixel

bool otXPT2046.position (  U16 &  x, U16 &  y )

Read coordinate position where touch screen is pressed Parameters: x  Return horizontal value y  Return vertical value Returns: True if touch screen is pressed

bool otXPT2046.rawData (  U16 &  _x, U16 &  _y, U16 &  _z )

Read ADC raw data Parameters: _x  Return horizontal value _y  Return vertical value _z  Return pressure value Returns: True if touch screen is pressed

void otXPT2046.setCalibration (  U16  vy1, U16  vx1, U16  vy2, U16  vx2 )

Procedure to calibrate the touch screen Parameters: vy1  Vertical start position vx1  Horizontal start position vy2  Vertical end position vx2  Horizontal end position

void otXPT2046.setRotation (  rotation_t  rot  )

Set the coordinate rotation Parameters: rot  Rotation value see rotation_t

void otXPT2046.setThreshold (  int  t  )

Set the threshold value to detect a touch screen pressure Parameters: t  Threshold value in the range 0:4095

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

• otXPT2046.h

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