touch.h File Reference

High-level touchscreen functions for ARM7. More...

#include <nds/arm7/serial.h>
#include <nds/touch.h>

Functions
void	touchApplyCalibration (u16 rawx, u16 rawy, u16 *px, u16 *py)
	Apply calibration to raw X/Y touch screen measurements.
void	touchInit (void)
	Initialize the touch subsystem (NDS/DSi).
bool	touchPenDown (void)
	Checks if the screen is currently being touched.
bool	touchReadData (touchRawArray *data)
	Read a complete, raw touch measurement into the provided buffer.
void	touchReadXY (touchPosition *touchPos)
	Read a touch X/Y position into the provided buffer.

Detailed Description

High-level touchscreen functions for ARM7.

Function Documentation

touchApplyCalibration()

void touchApplyCalibration	(	u16	rawx,
		u16	rawy,
		u16 *	px,
		u16 *	py
	)

Apply calibration to raw X/Y touch screen measurements.

Parameters

rawx	Raw X value
rawy	Raw Y value
px	Calibrated X value
py	Calibrated Y value

touchPenDown()

bool touchPenDown

(

void

)

Checks if the screen is currently being touched.

Returns

If the pen is down it returns true.

touchReadData()

bool touchReadData

(

touchRawArray *

data

)

Read a complete, raw touch measurement into the provided buffer.

Parameters

data	Struct to hold the read data.

Returns

True if the read is successful, false otherwise.

touchReadXY()

void touchReadXY

(

touchPosition *

touchPos

)

Read a touch X/Y position into the provided buffer.

Parameters

touchPos

Struct to hold the read data.