// ESP32-S2
#define TEST_LED 9
void setup() {
  pinMode(TEST_LED, OUTPUT);

  // Wait for USB Serial to become available
  while (!Serial) delay(100);

  Serial.begin(115200);
  Serial.println("Hello, Wemos S2 mini!");
}

void loop() {
  digitalWrite(TEST_LED, HIGH);
  delay(1000);
  digitalWrite(TEST_LED, LOW);
  delay(1000);
}