//Wokwi Serial terminal simulation - Wokwi Arduino Simulator

bool led_status = LOW;   // start with LED off, for testing of switch code only
char nav[3][10] = {"ndb1","ndb2","ndb3"};
//volatile bool a0State = false;
bool initialisation_complete =false;    // inhibit any interrupts until initialisation is complete
volatile bool interrupt_process_status = false; // start with no switch press pending, ie false 

void setup() 
{
  pinMode(A0, INPUT);
  //pinMode(LED, OUTPUT);                 //set 
  pinMode(2, INPUT);                    //set pin 2 as interrupt input
  Serial.begin(9600);
  Serial.println("Welcome to the Serial Monitor!");
  Serial.println("---------------------------------");
  attachInterrupt(digitalPinToInterrupt(2), PIN2_ISR, RISING);
  initialisation_complete =true;        // enable interrupt processing 

}

void loop() 
{

  if (read_button() == true) 
  {
    Serial.println("pressed");
  } else 
  {
    //Serial.println("Not pressed");
  }


  /*while (Serial.available() == 0) {

    String str = Serial.readString();

    for (int i = 0; i < 3; i++) 
    {
      delay(2000);
      Serial.println(nav[i]);
      Serial.println(str);
    }

  } */
}

void PIN2_ISR() 
{
  if (initialisation_complete == true)
  {
    if (interrupt_process_status == false)
    {
      Serial.println("true");
     if (digitalRead(2) == HIGH) 
     {
       interrupt_process_status = true;
     }
    }  
  }
}

bool read_button() 
{
  
  if (interrupt_process_status == true) 
  {
    
    if (digitalRead(2) ==HIGH)
    {
      interrupt_process_status == false;
      return true;
    }
  }
  return false; 
}