Keypad< PIN, DEBOUNCE > Class Template Reference

#include <Keypad.h>

Collaboration diagram for Keypad< PIN, DEBOUNCE >:

Public Member Functions
	Keypad (const uint16_t *map=NULL)
bool	ischanged ()
uint8_t	key ()
uint16_t	timestamp ()

Protected Attributes
uint16_t	m_timestamp
uint8_t	m_key
const uint16_t *	m_map

Detailed Description

template<int PIN, uint16_t DEBOUNCE = 50>
class Keypad< PIN, DEBOUNCE >

Resistor ladder keypad read and debounce template class.

Parameters

[in]	PIN	analog pin.
[in]	DEBOUNCE	time limit (default 50 ms).

Definition at line 28 of file Keypad.h.

Constructor & Destructor Documentation

template<int PIN, uint16_t DEBOUNCE = 50>

Keypad< PIN, DEBOUNCE >::Keypad ( const uint16_t *  map = NULL )

inline

Construct keypad with given template parameters.

Definition at line 33 of file Keypad.h.

Member Function Documentation

template<int PIN, uint16_t DEBOUNCE = 50>

bool Keypad< PIN, DEBOUNCE >::ischanged ( )

inline

Check if it is time to sample the keypad and check for key pressed/release.

Returns

true(1) if a change was detected, otherwise false(0).

Definition at line 45 of file Keypad.h.

template<int PIN, uint16_t DEBOUNCE = 50>

uint8_t Keypad< PIN, DEBOUNCE >::key ( )

inline

Return latest key.

Returns

key number.

Definition at line 65 of file Keypad.h.

template<int PIN, uint16_t DEBOUNCE = 50>

uint16_t Keypad< PIN, DEBOUNCE >::timestamp ( )

inline

Return debounce timestamp.

Returns

timestamp.

Definition at line 75 of file Keypad.h.

Member Data Documentation

template<int PIN, uint16_t DEBOUNCE = 50>

uint8_t Keypad< PIN, DEBOUNCE >::m_key

protected

Latest debounced key.

Definition at line 86 of file Keypad.h.

template<int PIN, uint16_t DEBOUNCE = 50>

const uint16_t* Keypad< PIN, DEBOUNCE >::m_map

protected

Key map; program memory with values in descent order.

Definition at line 89 of file Keypad.h.

template<int PIN, uint16_t DEBOUNCE = 50>

uint16_t Keypad< PIN, DEBOUNCE >::m_timestamp

protected

Timestamp for latest pin read.

Definition at line 83 of file Keypad.h.

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

• src/Keypad.h