Touch

Detailed Description

Data Structures
struct	TOUCH_Config_TypeDef
struct	TOUCH_Pos_TypeDef

Macros
#define	TOUCH_INIT_DEFAULT

Typedefs
typedef void(	TOUCH_Upcall_TypeDef) (TOUCH_Pos_TypeDef *)

Functions
int	TOUCH_CalibrationTable (POINT *displayPtr, POINT *screenPtr)
	Set calibration table. More...
TOUCH_Pos_TypeDef *	TOUCH_GetPos (void)
	Returns current touch position and state. More...
void	TOUCH_Init (TOUCH_Config_TypeDef *config)
	Initialize touch panel driver. More...
int	TOUCH_IsBusy (void)
	Check status of the touch panel. More...
void	TOUCH_RegisterUpcall (TOUCH_Upcall_TypeDef *new_upcall)
	Register upcall which will be call every position or state change. More...

Macro Definition Documentation

#define TOUCH_INIT_DEFAULT

Value:

{ 500000,                /* 500kHz sampling frequency */             \
    1,                     /* Ignore moves not greater than 1 pixel */ \
    adcOvsRateSel128,      /* Oversampling 128 times */                \
  }

Initializes Touch default values

Definition at line 63 of file touch.h.

Typedef Documentation

typedef void( TOUCH_Upcall_TypeDef) (TOUCH_Pos_TypeDef *)

touch panel upcall type definition

Definition at line 70 of file touch.h.

Function Documentation

int TOUCH_CalibrationTable	(	POINT *	displayPtr,
		POINT *	screenPtr
	)

Set calibration table.

Parameters

[in]	displayPtr	Table of display points
[in]	screenPtr	Table of adc values reflecting display points

Returns

Returns OK if calibration table is set.

Definition at line 410 of file touch.c.

References calibrationMatrix.

TOUCH_Pos_TypeDef* TOUCH_GetPos

(

void

)

Returns current touch position and state.

Returns

Current touch position and state

Definition at line 372 of file touch.c.

References ADC0, ADC_IF_SINGLE, ADC_IntDisable(), ADC_IntEnable(), TOUCH_Pos_TypeDef::adcx, TOUCH_Pos_TypeDef::adcy, TOUCH_Pos_TypeDef::pen, TOUCH_Pos_TypeDef::x, and TOUCH_Pos_TypeDef::y.

void TOUCH_Init

(

TOUCH_Config_TypeDef *

config

)

Initialize touch panel driver.

Parameters

config

Driver configuration data.

Definition at line 340 of file touch.c.

References _ADC_IF_MASK, ADC0, ADC0_IRQn, ADC_IF_SINGLE, ADC_Init(), ADC_INIT_DEFAULT, ADC_InitSingle(), ADC_IntClear(), ADC_IntDisable(), ADC_IntEnable(), ADC_PrescaleCalc(), ADC_Start(), ADC_Y, adcRefVDD, adcResOVS, adcStartSingle, BSP_PeripheralAccess(), BSP_TOUCH, CMU_ClockEnable(), cmuClock_ADC0, TOUCH_Config_TypeDef::frequency, TOUCH_Config_TypeDef::ignore, ADC_InitSingle_TypeDef::input, TOUCH_Config_TypeDef::oversampling, ADC_Init_TypeDef::ovsRateSel, ADC_Init_TypeDef::prescale, ADC_InitSingle_TypeDef::reference, and ADC_InitSingle_TypeDef::resolution.

int TOUCH_IsBusy

(

void

)

Check status of the touch panel.

Returns

0 if panel is idle (not touched).

Definition at line 318 of file touch.c.

References GPIO_PinInGet(), TOUCH_X2_PIN, and TOUCH_X2_PORT.

void TOUCH_RegisterUpcall

(

TOUCH_Upcall_TypeDef *

new_upcall

)

Register upcall which will be call every position or state change.

Parameters

[in]

new_upcall

Pointer to upcall function

Definition at line 392 of file touch.c.