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Peter Dragun aaa2e08204 Some checks failed Build esptool / Build esptool binaries for linux-aarch64 (push) Has been cancelled Details Build esptool / Build esptool binaries for linux-amd64 (push) Has been cancelled Details Build esptool / Build esptool binaries for linux-armv7 (push) Has been cancelled Details Build esptool / Build esptool binaries for macos-amd64 (push) Has been cancelled Details Build esptool / Build esptool binaries for macos-arm64 (push) Has been cancelled Details Build esptool / Build esptool binaries for windows-amd64 (push) Has been cancelled Details Test esptool / test_esptool (3.10) (push) Has been cancelled Details Test esptool / test_esptool (3.11) (push) Has been cancelled Details Test esptool / test_esptool (3.12) (push) Has been cancelled Details Test esptool / test_esptool (3.13) (push) Has been cancelled Details Test esptool / test_esptool (3.14) (push) Has been cancelled Details Test esptool / test_esptool (3.15) (push) Has been cancelled Details Test esptool / check_stubs (push) Has been cancelled Details Build esptool / Create GitHub release (push) Has been cancelled Details Merge branch 'feat/report_s31_variant' into 'master' feat: Report ESP32-S31 variant information from eFuse Closes ESPTOOL-1413 See merge request espressif/esptool!1131		2026-11-11 22:55:08 +08:00
.github	change(python): Support Python v3.15	2026-10-20 11:13:22 +02:00
.gitlab	change(python): Support Python v3.15	2026-10-20 11:13:22 +02:00
ci	feat(stub_flasher): Update flasher stub to v1.4.1	2026-10-14 16:42:23 +02:00
docs	feat(espefuse): Rename adc-info to calib-info with compatibility aliases	2026-10-16 15:43:01 +03:00
esp_rfc2217_server	feat: Migrate esp_rfc2217_server to use esp-pylib and rich_click	2026-06-26 10:57:04 +02:00
espefuse	fix(espefuse): keep one result callback when main() is called more than once	2026-10-26 15:49:46 +05:30
espsecure	fix(espsecure): report missing EC_PARAMS attribute of HSM ECDSA key	2026-10-05 10:26:35 +02:00
esptool	feat: Report ESP32-S31 variant information from eFuse	2026-11-11 13:11:41 +01:00
test	fix(espefuse): keep one result callback when main() is called more than once	2026-10-26 15:49:46 +05:30
.git-blame-ignore-revs	ci: Added commit sha to .git-blame-ignore-revs	2026-06-09 10:10:59 +02:00
.gitignore	test: Generate RAM hello world images instead of committing them	2026-09-22 19:40:21 +02:00
.gitlab-ci.yml	change(python): Support Python v3.15	2026-10-20 11:13:22 +02:00
.pre-commit-config.yaml	ci: Bump pre-commit hooks	2026-10-05 20:32:11 +00:00
AGENTS.md	docs(contributing): Rewrite the contributions guide and add AGENTS.md	2026-10-06 08:58:38 +02:00
CHANGELOG.md	change: Update version to 5.6.0	2026-10-15 14:29:49 +02:00
CONTRIBUTING.rst	docs(contributing): Rewrite the contributions guide and add AGENTS.md	2026-10-06 08:58:38 +02:00
esp_rfc2217_server.py	ci: Updated pre-commit hooks, Added checks, Fixed files	2026-06-09 10:07:27 +02:00
espefuse.py	bugfix: Adjust wrapper scripts to not import themselves	2023-05-22 14:37:02 +00:00
espsecure.py	bugfix: Adjust wrapper scripts to not import themselves	2023-05-22 14:37:02 +00:00
esptool.py	bugfix: Adjust wrapper scripts to not import themselves	2023-05-22 14:37:02 +00:00
LICENSE	change: Update to the latest version of the license file	2026-10-12 19:25:16 +02:00
MANIFEST.in	docs: Remove .py suffix from tool names	2025-06-24 14:22:28 +02:00
pyproject.toml	change(python): Support Python v3.15	2026-10-20 11:13:22 +02:00
README.md	docs(stub_flasher): Document esp-flasher-stub and announce legacy stub deprecation	2026-06-05 22:48:45 +02:00
setup.py	change: Update imports according to Ruff isort rules	2026-04-21 10:18:32 +02:00

README.md

esptool

A Python-based, open-source, platform-independent serial utility for flashing, provisioning, and interacting with Espressif SoCs.

Documentation

Visit the documentation or run esptool -h.

Flasher Stub

esptool uploads a small flasher stub program to the chip to improve flashing performance and work around ROM bootloader limitations. The stub is developed in the esp-flasher-stub repository. Prebuilt binaries are bundled with esptool releases.

Contribute

If you're interested in contributing to esptool, please check the contributions guide.

About

esptool was initially created by Fredrik Ahlberg (@themadinventor), and later maintained by Angus Gratton (@projectgus). It is now supported by Espressif Systems. It has also received improvements from many members of the community.

License

This document and the attached source code are released as Free Software under GNU General Public License Version 2 or later. See the accompanying LICENSE file for a copy.