PqInputs.cpp

/*
 * PqInputs.cpp
 *
 * (c) 2015 Sofian Audry        :: info(@)sofianaudry(.)com
 * (c) 2015 Thomas O Fredericks :: tof(@)t-o-f(.)info
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "PqInputs.h"

void PqSmoothable::smooth(float factor) {
  _avg.setAlphaOrN(factor);
}

float PqSmoothable::_smoothed() {
  return _avg.update( _read() );
}

AnalogIn::AnalogIn(uint8_t pin, uint8_t mode)
  : PqPinComponent(pin, mode), PqGetter(), _value(0)
{}

#ifdef ESP8266
#define ANALOG_READ_MAX_VALUE 1024
#else
#define ANALOG_READ_MAX_VALUE 1023
#endif
float AnalogIn::_read() {
  // Convert
  int rawValue = analogRead(_pin);
  if (_mode == ANALOG_INVERTED)
    rawValue = ANALOG_READ_MAX_VALUE - rawValue;
  return rawValue / float(ANALOG_READ_MAX_VALUE);
}

void AnalogIn::setup() { update(); }
void AnalogIn::update() { _value = _smoothed(); }

DigitalIn::DigitalIn(uint8_t pin, uint8_t mode)
  : PqPinComponent(pin, mode), PqDigitalGetter(), _isOn(false)
{}

float DigitalIn::_read() {
  bool isHigh = digitalRead(_pin) == HIGH;
  if (_mode == INTERNAL_PULLUP || _mode == EXTERNAL_PULLUP) // inverted
    isHigh = !isHigh;
  return digitalToAnalog(isHigh);
}

void DigitalIn::setup() {
  pinMode(_pin, _mode == INTERNAL_PULLUP ? INPUT_PULLUP : INPUT);
	update();
}

void DigitalIn::update() {
	_isOn = analogToDigital(_smoothed());
}