String data="";  //used to receive serial messages
const int buttonPin1 =11;
const int buttonPin2 =12;
const int buttonPin3 =4;
const int buttonPin4 =5;
bool flag_1 = 0;
bool flag_2 = 0;
bool flag_3 = 0;
bool flag_4 = 0;
bool buttonState_1 = 0;
bool buttonState_2 = 0;
bool buttonState_3 = 0;
bool buttonState_4 = 0;
void setup() {
  pinMode(buttonPin1, INPUT);
  pinMode(buttonPin2, INPUT);
  pinMode(buttonPin3, INPUT);
  pinMode(buttonPin4, INPUT);
  Serial.begin(9600);
}

void loop() {
  delay(100);
  int oneButtonState = digitalRead(buttonPin1);
  
  if (oneButtonState != buttonState_1) {
    if(oneButtonState)
    {
       if(flag_1 == 0)
       {
       Serial.println("VC.TriggerEvent&&ButtonOne.Pressed");
       flag_1 = 1;
       }
    }
    else
    {
       if(flag_1 == 1)
          {
            Serial.println("VC.TriggerEvent&&ButtonOne.State.Released");
            flag_1 = 0;
          }
    }
    buttonState_1 = oneButtonState;
  } 
  delay(100);
  int twoButtonState = digitalRead(buttonPin2);
  if (twoButtonState != buttonState_2) {
    if(twoButtonState)
    {
      if(flag_2 == 0)
        {
         Serial.println("VC.TriggerEvent&&ButtonTwo.Pressed");
         flag_2 = 1;
        }
    }
    else
    {
      if(flag_2 == 1)
        {
         Serial.println("VC.TriggerEvent&&ButtonTwo.Released");
         flag_2 = 0;
        }  
    }
    buttonState_2 = twoButtonState;
  }
  
  delay(100);
  int threeButtonState = digitalRead(buttonPin3);
  if (threeButtonState != buttonState_3) {
    if(threeButtonState)
    {
      if(flag_3 == 0)
        {
         Serial.println("VC.TriggerEvent&&ButtonThree.Pressed");
         flag_3 = 1;
        }
    }
    else
    {
      if(flag_3 == 1)
        {
         Serial.println("VC.TriggerEvent&&ButtonThree.Released");
         flag_3 = 0;
        }  
    }
    buttonState_3 = threeButtonState;
  }
delay(100);
  int fourButtonState = digitalRead(buttonPin4);
  if (fourButtonState != buttonState_4) {
    if(fourButtonState)
    {
      if(flag_4 == 0)
        {
         Serial.println("VC.TriggerEvent&&ButtonFour.Pressed");
         flag_4 = 1;
        }
    }
    else
    {
      if(flag_4 == 1)
        {
         Serial.println("VC.TriggerEvent&&ButtonFour.Released");
         flag_4 = 0;
        }  
    }
    buttonState_4 = fourButtonState;
  }
}

void serialEvent() {
  data="";
  while (Serial.available()) {
    // get the new byte:
    char inChar = (char)Serial.read(); 
    // add it to the data:
    if (inChar == (char)10)
    {
      break; //break message on newline
    }
    data += inChar;
  }
  //data should be ready now.  What should we do with it?

  if (data=="hello")
  {
    Serial.println("tts.speak&&hi there");
    Serial.println("osd.showtext&&Hi There");
  }

  //Analog Read - Pin #
  else if (data.startsWith("ar."))
  {
    String strPin = data.substring(3);
    int whatPin = atoi(strPin.c_str());
    int v = analogRead (whatPin);
    Serial.println("VC.TriggerEvent&&Analog.Pin&&"+strPin+"&&"+v);
  }

  //DigitalWrite HIGH - Pin #
  else if (data.startsWith("dw.high."))
  {
    String strPin = data.substring(8);
    int whatPin = atoi(strPin.c_str());
    pinMode(whatPin, OUTPUT);
    digitalWrite (whatPin,HIGH);
  }

  //DigitalWrite LOW - Pin #
  else if (data.startsWith("dw.low."))
  {
    String strPin = data.substring(7);
    int whatPin = atoi(strPin.c_str());
    pinMode(whatPin, OUTPUT);
    digitalWrite (whatPin,LOW);
  }

  //unknown command
  else
  {
    Serial.println("VC.TriggerEvent&&Arduino.error&&"+data);
  }

  //clear data for next time
  data="";
}