#define LED1 12
#define sw 19
void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  pinMode(LED1, OUTPUT);
  pinMode(sw, INPUT);
}

void loop() {
  Serial.println(digitalRead(sw));
  if(digitalRead(sw)==HIGH){
    digitalWrite(LED1, HIGH);
  }else if(digitalRead(sw)==LOW){
  digitalWrite(LED1, LOW);
  
  }
  // put your main code here, to run repeatedly:
}