/*
  CTC GO! CORE MODULE
  LESSON 05 - Showing messages on PC

  This sketch is written to accompany Activity 2 in Lesson 05 of the CTC GO! core module
*/

// initialising the pins and other variables.
int buttonA = 2;
int buttonB = 3;
int button_state = 0;
int button_state2 = 0;
int writing = 1;
int redled = 12;
int greenled = 13;



void setup()
{
  Serial.begin(9600);
  // Setting up the pins as OUTPUTS.
  pinMode(buttonA, INPUT);
  pinMode(buttonB, INPUT);
  pinMode(redled, OUTPUT);
  pinMode(greenled, OUTPUT);

}

void loop()
{
  button_state = digitalRead(buttonA);
  button_state2 = digitalRead(buttonB);

  if (button_state == LOW && button_state2 == LOW && writing == 1)
  {
    delay (1000);
    Serial.println("Waiting");
    delay (1000);
    writing = 0;
  }
  //increase the value of counter one unit when button is pressed
  if (button_state == HIGH && button_state2 == LOW && writing == 0)
  {
    delay (1000);
    Serial.println("Vending Soda");
    digitalWrite (greenled, HIGH);
    delay (1000);
    digitalWrite (greenled, LOW);
    delay (1000);
    delay (1000);
    writing = 1;
  }

   if (button_state == LOW && button_state2 == HIGH && writing == 0)
  {
    delay (1000);
    Serial.println("Vending Water");
    digitalWrite (greenled, HIGH);
    delay (1000);
    digitalWrite (greenled, LOW);
    delay (1000);
    delay (1000);
    writing = 1;
  }
    if (button_state == HIGH && button_state2 == HIGH && writing == 1)
  {
    delay (1000);
    Serial.println("Product Not Available");
    digitalWrite (redled, HIGH);
    delay (1000);
    digitalWrite (redled, LOW);
    delay (1000);
    writing = 0;
  }

}