arduino-joystick/Button.cpp

#include "Button.h"
#include "Joystick.h"
#include <Encoder.h>
#include <Mux.h>

using namespace admux;

Button::Button(uint8_t vbutton) {
  this->vbutton = vbutton;
}

void Button::ReleaseButtons(Joystick* js) {
  js->ReleaseButton(vbutton);
}

// TODO: make analog_only work... how to handle that with debouncer?
SwitchButton::SwitchButton(uint8_t pin, uint8_t vbutton, bool pullup, Mux* mux, bool analog_only) : Button(vbutton) {
  this->mux = mux;

  uint8_t mode = INPUT;
  if (pullup) {
    this->inverted = true;
    mode = INPUT_PULLUP;
  }

  if (mux == NULL) this->bouncer.attach(pin, mode);
  else {
    this->bouncer.attach(mux->signalPin().pin, mode);
    this->channel_id = pin;
  }
}

bool SwitchButton::BouncerUpdate() {
  if (mux != NULL) {
    mux->channel(channel_id);
    delayMicroseconds(500);
  }

  return bouncer.update();
}

bool SwitchButton::On() {
  bool state = bouncer.rose();
  if (inverted) state = bouncer.fell();
  return state;
}


PassthruButton::PassthruButton(uint8_t pin, uint8_t vbutton, bool pullup, Mux* mux, bool analog_only) : SwitchButton(pin, vbutton, pullup, mux, analog_only) {
  this->type = BUTTON_PASSTHRU;
}

bool PassthruButton::Update(Joystick* js) {
  if (!BouncerUpdate()) return false;
  if (On()) js->PressButton(vbutton);
  else js->ReleaseButton(vbutton);
  return true;
}


LatchedButton::LatchedButton(uint8_t pin, uint8_t vbutton, bool pullup, Mux* mux, bool analog_only) : SwitchButton(pin, vbutton, pullup, mux, analog_only) {
  this->type = BUTTON_LATCHED_MOMENTARY;
  this->pressed = false;
}

bool LatchedButton::Update(Joystick* js) {
  if (!BouncerUpdate()) return false;

  if (On()) {
    if (!pressed) {
      js->PressButton(vbutton);
      pressed = true;
    } else {
      js->ReleaseButton(vbutton);
      pressed = false;
    }
  }

  return true;
}


PulsedButton::PulsedButton(uint8_t pin, uint8_t vbutton, bool double_action, bool split, bool pullup, Mux* mux, bool analog_only) : SwitchButton(pin, vbutton, pullup, mux, analog_only) {
  this->release_time1 = 0;
  this->release_time2 = 0;
  if (double_action) {
    if (split) {
      this->type = BUTTON_PULSED_DOUBLE_ACTION_SPLIT;
      this->vbutton2 = vbutton + 1;
    } else {
      this->type = BUTTON_PULSED_DOUBLE_ACTION;
    }
  } else {
    this->type = BUTTON_PULSED;
  }
}

bool PulsedButton::Update(Joystick* js) {
  if (release_time1 != 0 && millis() >= release_time1) {
    js->ReleaseButton(vbutton);
    release_time1 = 0;
  }

  if (release_time2 != 0 && millis() >= release_time2) {
    js->ReleaseButton(vbutton2);
    release_time2 = 0;
  }

  if (!BouncerUpdate()) return false;

  switch(type) {
    case BUTTON_PULSED:
      if (On()) js->PressButton(vbutton);
      break;
    case BUTTON_PULSED_DOUBLE_ACTION:
      js->PressButton(vbutton);
      release_time1 = millis() + 250;
      break;
    case BUTTON_PULSED_DOUBLE_ACTION_SPLIT:
      if (On()) {
        js->PressButton(vbutton);
        release_time1 = millis() + 250;
      }
      else {
        js->PressButton(vbutton2);
        release_time2 = millis() + 250;
      }
      break;
  }

  return true;
}

void PulsedButton::ReleaseButtons(Joystick* js) {
  Button::ReleaseButtons(js);
  if (type == BUTTON_PULSED_DOUBLE_ACTION_SPLIT) js->ReleaseButton(vbutton2);
}



EncoderButton::EncoderButton(uint8_t pin1, uint8_t pin2, uint8_t vbutton) : Button(vbutton) {
  this->type = ENCODER_PULSED_SPLIT;
  this->vbutton2 = vbutton + 1;
  this->encoder = new Encoder(pin1, pin2);
  this->last_value = encoder->read();
  this->release_time1 = 0;
  this->release_time2 = 0;
}

bool EncoderButton::Update(Joystick* js) {
  if (release_time1 != 0 && millis() >= release_time1) {
    js->ReleaseButton(vbutton);
    release_time1 = 0;
  }

  if (release_time2 != 0 && millis() >= release_time2) {
    js->ReleaseButton(vbutton2);
    release_time2 = 0;
  }

  bool changed = false;
  long new_value = encoder->read();
  if (new_value > last_value) {
    js->PressButton(vbutton);
    changed = true;
    release_time1 = millis() + 250;
  }
  else if (new_value < last_value) {
    js->PressButton(vbutton2);
    changed = true;
    release_time2 = millis() + 250;
  }
  last_value = new_value;
  return changed;
}

void EncoderButton::ReleaseButtons(Joystick* js) {
  Button::ReleaseButtons(js);
  js->ReleaseButton(vbutton2);
}