/* 21/10/2021
    joinSketchv2_sosbuttons

    This sketch does not work properly...this is delivberate to highlight the issue
    when joining sketches

    In this example we add a single button that we want to use to start the sequence or end the sequence
    We will start to see the issues when the two sketches are joined

    Based on the Examples>Digital>button

    As usual I list any pins used in the sketch, this prevents duplicates
    pins used:

    pin 13 built in LED
    pin 8 button
*/
//LED_BUILTIN not used because it does not work on some boards sich as the ESP32
//So stops bad habits developing
const int ledPin = 13;  //set the LED pin
const int buttonPin = 8;//push button pin

void setup() {
  Serial.begin(9600);
  Serial.println("joinSketchv2_sosbuttons");

  //set the pin mode for the LED pin
  pinMode(ledPin, OUTPUT);
  //set the pin mode for the button pin
  pinMode(buttonPin, INPUT);
}

void loop() {
  int buttonState;
  //in the button example pressing the button turns the LED on, releasing turns LED off

  /* The problem in this sketch is because of the delay() during the sequence
   *  Once the sequence has started there is no way for the system to know that the 
   *  button is no longer being pressed until the SOS sequence has finished.
   *  Pressing the button and releasing it during the sequence is not picked up
   *  This is a regular cause of conflict when joining sketches together.
   *  The other issue with this sketch is that the button relased is printed endlessly to the Serial monitor
   */
  
  
  buttonState = digitalRead(buttonPin);
  if (buttonState == HIGH) {//button pressed start the led sos sequence
    Serial.print("button pressed");
    //three dots..quick pulses
    digitalWrite(ledPin, HIGH);
    delay(200);
    digitalWrite(ledPin, LOW);
    delay(200);
    digitalWrite(ledPin, HIGH);
    delay(200);
    digitalWrite(ledPin, LOW);
    delay(200);
    digitalWrite(ledPin, HIGH);
    delay(200);
    digitalWrite(ledPin, LOW);
    delay(600);
    //Three dashes
    digitalWrite(ledPin, HIGH);
    delay(600);
    digitalWrite(ledPin, LOW);
    delay(200);
    digitalWrite(ledPin, HIGH);
    delay(600);
    digitalWrite(ledPin, LOW);
    delay(200);
    digitalWrite(ledPin, HIGH);
    delay(600);
    digitalWrite(ledPin, LOW);
    delay(600);
    //three dots..quick pulses
    digitalWrite(ledPin, HIGH);
    delay(200);
    digitalWrite(ledPin, LOW);
    delay(200);
    digitalWrite(ledPin, HIGH);
    delay(200);
    digitalWrite(ledPin, LOW);
    delay(200);
    digitalWrite(ledPin, HIGH);
    delay(200);
    digitalWrite(ledPin, LOW);
    delay(2000);//wait 2 seconds before doing it all again
  } else {//button released, we want the sequence to stop
    Serial.println("button released");
    digitalWrite(ledPin, LOW);
  }

}