//Constant wont change
const int buttonPin = 33; // ESP32connected to button's pin
const int ledBLUE = 32; // ESP32connected to BLUE led's pin
const int ledRED = 34; // ESP32connected to RED led's pin
const int ledGREEN = 35; // ESP32connected to GREEN led's pin

// variables will change:
int ledState = LOW;     // the current state of LED
int lastButtonState;    // the previous state of button
int currentButtonState; // the current state of button


void setup() {
  Serial.begin(9600);                // initialize serial
  pinMode(buttonPin, INPUT_PULLUP); // set ESP32 pin to input pull-up mode
  pinMode(ledBLUE, OUTPUT);          // set ESP32 pin to output mode
  pinMode(ledRED, OUTPUT);          // set ESP32 pin to output mode
  pinMode(ledGREEN, OUTPUT);          // set ESP32 pin to output mode    
  currentButtonState = digitalRead(buttonPin);
}
void loop() {
  lastButtonState    = currentButtonState;      // save the last state
  currentButtonState = digitalRead(buttonPin); // read new state
  if(lastButtonState == HIGH && currentButtonState == LOW) {
    Serial.println("The button is pressed");
    // toggle state of LED
    ledState = !ledState;
    // control LED arccoding to the toggled state
    digitalWrite(ledGREEN, ledState); 
  }
  delay(100);
}