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This project brings support for ESP8266 chip to the Arduino environment. It lets you write sketches using familiar Arduino functions and libraries, and run them directly on ESP8266, no external microcontroller required.

ESP8266 Arduino core comes with libraries to communicate over WiFi using TCP and UDP, set up HTTP, mDNS, SSDP, and DNS servers, do OTA updates, use a file system in flash memory, work with SD cards, servos, SPI and I2C peripherals.

• Installing options:
  • Using Boards Manager
  • Using git version
  • Using PlatformIO
  • Building with make
• Documentation
• Issues and support
• Contributing
• License and credits

Starting with 1.6.4, Arduino allows installation of third-party platform packages using Boards Manager. We have packages available for Windows, Mac OS, and Linux (32 and 64 bit).

• Install the current upstream Arduino IDE at the 1.8 level or later. The current version is at theArduino website.
• Start Arduino and open Preferences window.
• Enterhttp://arduino.esp8266.com/stable/package_esp8266com_index.json intoAdditional Board Manager URLs field. You can add multiple URLs, separating them with commas.
• Open Boards Manager from Tools > Board menu and installesp8266 platform (and don't forget to select your ESP8266 board from Tools > Board menu after installation).

Boards manager link:http://arduino.esp8266.com/stable/package_esp8266com_index.json

Documentation:https://arduino-esp8266.readthedocs.io/en/2.4.2/

• Install the current upstream Arduino IDE at the 1.8 level or later. The current version is at theArduino website.
• Go to Arduino directory
  • For Mac OS X, it isArduino.app showing as the Arduino icon.
    This location may be your~/Downloads,~/Desktop or even/Applications.

    cd<application-directory>/Arduino.app/Contents/Java

  • For Linux, it is ~/arduino by default.

    cd~arduino

• Clone this repository into hardware/esp8266com/esp8266 directory (or clone it elsewhere and create a symlink)

cd hardwaremkdir esp8266comcd esp8266comgit clone https://github.com/esp8266/Arduino.git esp8266

• Download binary tools (you need Python 2.7)

cd esp8266/toolspython get.py

• Restart Arduino

PlatformIO is an open source ecosystem for IoTdevelopment with cross platform build system, library manager and full supportfor Espressif (ESP8266) development. It works on the popular host OS: macOS, Windows,Linux 32/64, Linux ARM (like Raspberry Pi, BeagleBone, CubieBoard).

• What is PlatformIO?
• PlatformIO IDE
• PlatformIO Core (command line tool)
• Advanced usage -custom settings, uploading to SPIFFS, Over-the-Air (OTA), staging version
• Integration with Cloud and Standalone IDEs -Cloud9, Codeanywhere, Eclipse Che (Codenvy), Atom, CLion, Eclipse, Emacs, NetBeans, Qt Creator, Sublime Text, VIM, Visual Studio, and VSCode
• Project Examples

makeEspArduino is a generic makefile for any ESP8266 Arduino project.Using make instead of the Arduino IDE makes it easier to do automated and production builds.

Documentation for latest development version:https://arduino-esp8266.readthedocs.io/en/latest/

ESP8266 Community Forum is a well established community for questions and answers about Arduino for ESP8266.

If you find this forum useful, please consider supporting it with a donation.

If you encounter an issue which you think is a bug in the ESP8266 Arduino Core or the associated libraries, you are welcome to submit it here on Github:https://github.com/esp8266/Arduino/issues.

Please provide as much context as possible:

• ESP8266 Arduino core version which you are using (you can check it in Boards Manager)
• your sketch code; please wrap it into a code block, seeGithub markdown manual
• when encountering an issue which happens at run time, attach serial output. Wrap it into a code block, just like the code.
• for issues which happen at compile time, enable verbose compiler output in the IDE preferences, and attach that output (also inside a code block)
• ESP8266 development board model
• IDE settings (board choich, flash size)

For minor fixes of code and documentation, please go ahead and submit a pull request.

Check out the list of issues which are easy to fix —easy issues for 2.5.0. Working on them is a great way to move the project forward.

Larger changes (rewriting parts of existing code from scratch, adding new functions to the core, adding new libraries) should generally be discussed by opening an issue first.

Feature branches with lots of small commits (especially titled "oops", "fix typo", "forgot to add file", etc.) should be squashed before opening a pull request. At the same time, please refrain from putting multiple unrelated changes into a single pull request.

Arduino IDE is developed and maintained by the Arduino team. The IDE is licensed under GPL.

ESP8266 core includes an xtensa gcc toolchain, which is also under GPL.

Esptool written by Christian Klippel is licensed under GPLv2, currently maintained by Ivan Grokhotkov:https://github.com/igrr/esptool-ck.

Espressif SDK included in this build is under Espressif MIT License.

ESP8266 core files are licensed under LGPL.

SPI Flash File System (SPIFFS) written by Peter Andersson is used in this project. It is distributed under MIT license.

umm_malloc memory management library written by Ralph Hempel is used in this project. It is distributed under MIT license.

axTLS library written by Cameron Rich, built fromhttps://github.com/igrr/axtls-8266, is used in this project. It is distributed underBSD license.

BearSSL library written by Thomas Pornin, built fromhttps://github.com/earlephilhower/bearssl-esp8266, is used in this project. It is distributed under theMIT License.