ESP32 Builkt-in LED Blink by using millis() [002]

 //Using Millis() for LED ON and OFF

int ledPin = 2;  // ESP 32 

int ledState = LOW;

long interval = 1000;

long previousMillis = 0;

void setup() {

pinMode(ledPin,OUTPUT);

}

void loop() {

  unsigned long currentMillis = millis();

  if( currentMillis - previousMillis > interval ) {

      previousMillis = currentMillis;

      if( ledState == LOW ) {

        ledState = HIGH;

        }

       else {

        ledState = LOW;

        }

      digitalWrite(ledPin,ledState);

      }

  }