#define LED_PIN 13 //led pin 
#define SW_PIN 33 //switch pin   
void setup() {
Serial.begin(115200); //starting serial communication 
Serial.println("Hello, ESP32!"); //outputting message 
pinMode(LED_PIN, OUTPUT);
pinMode(SW_PIN, INPUT);
}
void loop() {
int SwitchState = digitalRead((SW_PIN));
Serial.print ("Switch State is:"); 
Serial.println (SwitchState); //displaying the switch state 
digitalWrite(LED_PIN, SwitchState); 
delay (1000);   
}