void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  pinMode(23, INPUT);
  pinMode(12, OUTPUT);
}

void loop() {
if(digitalRead(23)==1){
  digitalWrite(12, 1);
 }
 else {
   digitalWrite(12, 0);
 }
}