int ledpin = 2;
void setup() {
  // put your setup code here, to run once:
  pinMode(ledpin,OUTPUT);
  Serial.begin(115200);
  Serial.println("Hello, ESP32-S2!");
}

void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(ledpin,HIGH);
  delay(1000); 
  digitalWrite(ledpin,LOW);
  delay(1000);
}