//

// FILE: AnalogPin.cpp

// AUTHOR: Rob Tillaart

// VERSION: 0.1.00

// PURPOSE: wrapper class for analogRead

// URL:

//

// Released to the public domain

//

#include "AnalogPin.h"

AnalogPin::AnalogPin(uint8_t pin)

{

_pin = pin;

_prevValue = analogRead(pin);

}

uint16_t AnalogPin::read(uint8_t noise)

{

uint16_t value = analogRead(_pin);

if (noise == 0 || abs(value - _prevValue) > noise)

{

_prevValue = value;

}

return _prevValue;

}

uint16_t AnalogPin::readSmoothed(uint8_t alpha)

{

alpha = constrain(alpha, 0, 32);

uint16_t value = analogRead(_pin);

value = (alpha*_prevValue + (32-alpha)*value)/32;

_prevValue = value;

return value;

}

// -- END OF FILE --