#define BUTTON_PIN 22   // pin GPIO22 connected to the button's pin
#define RELAY_PIN 27    // pin GPIO27 connected to the relay's pin

void setup() {
  Serial.begin(9600);       // initialize serial port
  pinMode(BUTTON_PIN, INPUT_PULLUP);  // set ESP32 pin to input pull-up mode
  pinMode(RELAY_PIN, OUTPUT);         // set ESP32 pin to output mode
}

void loop() {
  int buttonState = digitalRead(BUTTON_PIN);  // read the button state

  if (buttonState == LOW) {
    Serial.println("The button is being pressed");
    digitalWrite(RELAY_PIN, HIGH);  // turn on LED
  }
  else if (buttonState == HIGH) {
    Serial.println("The button is unpressed");
    digitalWrite(RELAY_PIN, LOW);   // turn off LED
  }
}