sseptillion
2d6327e91c
Added possibility to attach the pin and auto set the pinMode. Attach and pinMode can now be done in 1 step. just call Bounce.attach(pin, INPUT_PULLUP) etc Fixed Header file and made all mode possible.
99 lines
2.4 KiB
C++
99 lines
2.4 KiB
C++
// Please read Bounce2.h for information about the liscence and authors
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#if defined(ARDUINO) && ARDUINO >= 100
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#include "Arduino.h"
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#else
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#include "WProgram.h"
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#endif
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#include "Bounce2.h"
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#define DEBOUNCED_STATE 0
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#define UNSTABLE_STATE 1
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#define STATE_CHANGED 3
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Bounce::Bounce()
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: previous_millis(0)
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, interval_millis(10)
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, state(0)
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, pin(0)
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{}
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void Bounce::attach(int pin) {
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this->pin = pin;
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bool read = digitalRead(pin);
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state = 0;
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if (digitalRead(pin)) {
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state = _BV(DEBOUNCED_STATE) | _BV(UNSTABLE_STATE);
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}
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#ifdef BOUNCE_LOCK_OUT
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previous_millis = 0;
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#else
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previous_millis = millis();
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#endif
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}
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void Bounce::attach(int pin, int mode){
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pinMode(pin, mode);
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this->attach(pin);
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}
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void Bounce::interval(uint16_t interval_millis)
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{
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this->interval_millis = interval_millis;
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}
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bool Bounce::update()
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{
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#ifdef BOUNCE_LOCK_OUT
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state &= ~_BV(STATE_CHANGED);
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// Ignore everything if we are locked out
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if (millis() - previous_millis >= interval_millis) {
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bool currentState = digitalRead(pin);
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if ((bool)(state & _BV(DEBOUNCED_STATE)) != currentState) {
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previous_millis = millis();
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state ^= _BV(DEBOUNCED_STATE);
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state |= _BV(STATE_CHANGED);
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}
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}
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return state & _BV(STATE_CHANGED);
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#else
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// Read the state of the switch in a temporary variable.
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bool currentState = digitalRead(pin);
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state &= ~_BV(STATE_CHANGED);
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// If the reading is different from last reading, reset the debounce counter
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if ( currentState != (bool)(state & _BV(UNSTABLE_STATE)) ) {
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previous_millis = millis();
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state ^= _BV(UNSTABLE_STATE);
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} else
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if ( millis() - previous_millis >= interval_millis ) {
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// We have passed the threshold time, so the input is now stable
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// If it is different from last state, set the STATE_CHANGED flag
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if ((bool)(state & _BV(DEBOUNCED_STATE)) != currentState) {
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previous_millis = millis();
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state ^= _BV(DEBOUNCED_STATE);
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state |= _BV(STATE_CHANGED);
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}
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}
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return state & _BV(STATE_CHANGED);
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#endif
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}
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bool Bounce::read()
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{
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return state & _BV(DEBOUNCED_STATE);
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}
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bool Bounce::rose()
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{
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return ( state & _BV(DEBOUNCED_STATE) ) && ( state & _BV(STATE_CHANGED));
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}
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bool Bounce::fell()
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{
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return !( state & _BV(DEBOUNCED_STATE) ) && ( state & _BV(STATE_CHANGED));
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}
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