Install esptool on Raspberry Pi OS (32 bit)

esptool.py is a Python-based, open source, platform independent, utility to communicate with the ROM bootloader in Espressif ESP8266 & ESP32 chips, and also ESP32-S2.

To install on Raspberry Pi (running 32 bit Raspberry Pi OS), open Terminal and enter the command:

$ sudo pip install esptool

or install Development mode, allows you to run the latest development version from this repository.

$ git clone https://github.com/espressif/esptool.git

$ cd esptool

$ pip install --user -e .

ref: https://github.com/espressif/esptool