MicroSwitch.cpp

#include "MicroSwitch.h"

#define DEBOUNCE_TIME 50000

MicroSwitch::MicroSwitch(int pinId) : DigitalInput(pinId), m_debouncePending(false), m_lastUpdate(0), m_currentState(HIGH), m_pendingState(HIGH)
{
}

void MicroSwitch::Update(long updateInterval)
{
  if (m_debouncePending)
  {
    m_lastUpdate += updateInterval;
  }
  else
  {
    m_lastUpdate = 0;
  }

 if (m_debouncePending){
    if (m_lastUpdate >= DEBOUNCE_TIME){
      m_debouncePending = false;
      if (m_pendingState == DigitalInput::GetState())
	  {
        m_currentState = m_pendingState;
		if (m_currentState == HIGH)
		{
			m_pressed = true;
		}
		else
		{
			m_pressed = false;
		}
      }
	  else 
	  {
        m_pendingState = m_currentState;
		m_pressed = false;
      }
      
    }
  }
  
  int state = DigitalInput::GetState();

  if (state != m_pendingState){
    if (!m_debouncePending){
      m_debouncePending = true;
      m_pendingState = state;
    }
  }
};

void MicroSwitch::Reset()
{
  m_currentState = m_pendingState = DigitalInput::GetState();
};

int MicroSwitch::GetState()
{
  return m_currentState;
}

bool MicroSwitch::JustPressed()
{
	bool pressed = m_pressed;
	m_pressed = false;
	return pressed;
}