Esptool

Install

• sudo pip3 install esptool

get chip_id

• esptool.py --port /dev/ttyUSB0 chip_id

esptool.py v3.0
Serial port /dev/ttyUSB0
Connecting....
Detecting chip type... ESP32
Chip is ESP32-D0WDQ6 (revision 1)
Features: WiFi, BT, Dual Core, 240MHz, VRef calibration in efuse, Coding Scheme None
Crystal is 40MHz
MAC: f0:08:d1:d1:cf:a8
Uploading stub...
Running stub...
Stub running...
Warning: ESP32 has no Chip ID. Reading MAC instead.
MAC: f0:08:d1:d1:cf:a8
Hard resetting via RTS pin...