/home/travis/build/larsks/pipower/button.c File Reference

Simple debouncing routine from https://hackaday.com/2015/12/10/embed-with-elliot-debounce-your-noisy-buttons-part-ii/ More...

#include "bool.h"
#include <stdint.h>
#include <stdlib.h>
#include <avr/io.h>
#include "button.h"
#include "millis.h"

Macros
#define	BUTTON_RELEASED   0b00000111
	History pattern when a button is released.
#define	BUTTON_PRESSED   0b11000000
	History pattern when a button is pressed.
#define	BUTTON_MASK   0b11000111
	Mask out noise in the button history.
#define	BUTTON_UP   0b11111111
	History pattern when button is up.
#define	BUTTON_DOWN   0b00000000
	History pattern when button is down.

Functions
void	button_new (Button *button, uint8_t pin, uint8_t poll_freq)
	Create a new Button object. More...
void	button_update (Button *button)
	Push current button state onto history. More...
bool	button_is_pressed (Button *button)
	Return true if button has been pressed. More...
bool	button_is_released (Button *button)
	Return true if button has been released. More...
bool	button_is_up (Button *button)
	Return true if button is up.
bool	button_is_down (Button *button)
	Return true if button is down.

Detailed Description

Simple debouncing routine from https://hackaday.com/2015/12/10/embed-with-elliot-debounce-your-noisy-buttons-part-ii/

Function Documentation

bool button_is_pressed

(

Button *

button

)

Return true if button has been pressed.

bool button_is_released

(

Button *

button

)

Return true if button has been released.

void button_new	(	Button *	button,
		uint8_t	pin,
		uint8_t	poll_freq
	)

Create a new Button object.

void button_update

(

Button *

button

)

Push current button state onto history.