#define LED_PIN01 18
#define LED_PIN02 19

void setup() {
  Serial.begin(9600); // 波特率 每秒可以传输 9600个二进制
  Serial.println("Hello, ESP32!");
  pinMode(LED_PIN01, OUTPUT);
  pinMode(LED_PIN02, OUTPUT);
}

void loop() {
  digitalWrite(LED_PIN01, HIGH);
  delay(100);
  digitalWrite(LED_PIN01, LOW);
  delay(100);

  digitalWrite(LED_PIN02, HIGH);
  delay(100);
  digitalWrite(LED_PIN02, LOW);
  delay(100);
}