#include <Wire.h>
#include <ESP32Servo.h>

#define SLAVE_ADDR 0x08 
#define SERVO_PIN 0     

Servo myServo;

void setup() {
  myServo.attach(SERVO_PIN);
  Wire.begin(SLAVE_ADDR); 
  Wire.onReceive(receiveEvent); 
}

void loop() {
}

void receiveEvent(int bytes) {
  while (Wire.available()) {
    int command = Wire.read();
    if (command == 1) {
      myServo.write(0);
      delay(500);
      myServo.write(180);
      delay(500);
      myServo.write(0);
    }
  }
}