This will not work with Arduino IDE 1.6.5 (or below) or with non ESP32-S2/S3 devices (e.g. Arduino UNO, Arduino MEGA, etc.). To use this library you need to have Arduino core for the ESP32 installed.

Abstract: The book management system pays more attention to light weight. Managers only need to perform simple operations to complete the operation of adding, deleting, modifying, and checking book ...