"Instrument and Measurement" Arduino
1. Download and install Arduino: Arduino IDE 2.3.3.
2. Build esp32 environments.
(1)File--Preferences--Additional board manager URLs: https://espressif.github.io/arduino-esp32/package_esp32_index.json
(2)Tools--boards--Boards manager--search esp32--install esp32 3.0.7 by Expressif Systems
Different versions have various API functions, especially between 2.X and 3.X.
(3) Choose the corresponding board that you have.
(4) Test using "get the board information".