#include <ESP32Servo.h>       //Header file for servomotor API  
Servo servo;          //Assign a variable “servo” of data type “Servo”
void setup() {
servo.attach(2);      //Attach the servo motor to GPIO2
servo.write(0);       //Make the position of servomotor as 0
delay(2000);        //2 second delay
}
void loop() {
servo.write(180);     //Rotate servomotor to 180 degree
delay(1000);        //1Second delay
servo.write(0);       //Rotate back the servomotor to 0 degree
delay(1000);        //1 Second delay
}