This repository contains a Javascript implementation of esptool, a serial flasher utility for Espressif chips. Unlike the Python-based esptool, esptool-js doesn't implement generation of binary images out of ELF files, and doesn't include companion tools similar to espefuse.py and espsecure.py.

esptool-js is based on Web Serial API and works in Google Chrome and Microsoft Edge, version 89 or later.

Visit https://espressif.github.io/esptool-js/ to see this tool in action.

npm install
npm run rollup
python3 -m http.server 8008

Then open http:https://localhost:8008 in Chrome or Edge. The npm run rollup step builds the bundle.js used in the example index.html.

The code in this repository is Copyright (c) 2021 Espressif Systems (Shanghai) Co. Ltd. It is licensed under Apache 2.0 license, as described in LICENSE file.