hdw-btn.c File Reference

Macros
#define	DEBOUNCE_HIST_LEN   5
	The number of samples kept in history to debounce buttons.
#define	TOUCH_CENTER   2
#define	NUM_TZ_RING   5

Functions
void	initButtons (gpio_num_t *pushButtons, uint8_t numPushButtons, touch_pad_t *touchPads, uint8_t numTouchPads)
	Initialize both pushbuttons and touch buttons.
void	deinitButtons (void)
	Free memory used by the buttons.
bool	checkButtonQueue (buttonEvt_t *evt)
	Service the queue of button events that caused interrupts This only returns a single event, even if there are multiple in the queue This function may be called multiple times in a row to completely empty the queue.
int	getTouchJoystick (int32_t *phi, int32_t *r, int32_t *intensity)
	Get high-level touch input, an analog input. NOTE: You must have touch callbacks enabled to use this.

Macro Definition Documentation

DEBOUNCE_HIST_LEN

#define DEBOUNCE_HIST_LEN   5

The number of samples kept in history to debounce buttons.

TOUCH_CENTER

#define TOUCH_CENTER   2

NUM_TZ_RING

#define NUM_TZ_RING   5

Function Documentation

initButtons()

void initButtons	(	gpio_num_t *	pushButtons,
		uint8_t	numPushButtons,
		touch_pad_t *	touchPads,
		uint8_t	numTouchPads )

Initialize both pushbuttons and touch buttons.

Parameters

pushButtons	A list of GPIOs with pushbuttons to initialize. The list should be in the same order as buttonBit_t, starting at PB_UP
numPushButtons	The number of pushbuttons to initialize
touchPads	A list of touch areas that make up a touchpad to initialize.
numTouchPads	The number of touch buttons to initialize

deinitButtons()

void deinitButtons

(

void

)

Free memory used by the buttons.

checkButtonQueue()

bool checkButtonQueue

(

buttonEvt_t *

evt

)

Service the queue of button events that caused interrupts This only returns a single event, even if there are multiple in the queue This function may be called multiple times in a row to completely empty the queue.

Parameters

evt	If an event occurred, return it through this argument

Returns

true if an event occurred, false if nothing happened

getTouchJoystick()

int getTouchJoystick	(	int32_t *	phi,
		int32_t *	r,
		int32_t *	intensity )

Get high-level touch input, an analog input. NOTE: You must have touch callbacks enabled to use this.

Parameters

[out]	phi	the angle of the touch. Where 0 is right, 320 is up, 640 is left and 960 is down.
[out]	r	is how far from center you are. 511 is on the outside edge, 0 is on the inside.
[out]	intensity	is how hard the user is pressing.

Returns

true if touched (joystick), false if not touched (no centroid)