d1d4212e8b
* Add support to specify global build defines and options A script manages the use of a file with a unique name, like `SketchName.ino.globals.h`, in the Sketch source directory to provide compiler command-line options (build options) and sketch global defines. The build option data is encapsulated in a unique "C" comment block and extracted into the build tree during prebuild. * Applied os.path.normpath() liberally to input arguments. Fixes windows file path issue. Improved helpful message for adding embedded build options. * doubleup '\' * Added context help for build option support * expunged sketchbook global added workaround for aggressive caching * inital pass at searching for and reading preferences.txt * Correct Windows path for preferences.txt Added portable path for preferences.txt Expanded file timestamp granularity Improved error message printing for Arduino IDE 2.0 RC4 * Improved portable path and various Windows paths to preferences.txt * Add cleanup logic and identify 1st run after IDE restart * text corrections * Create mkbuildoptglobals.py When global header file does not exist, this print makes it easier for user to create the header file by providing its name and documentation pointer. * build.opt heads up to user Compiler command line changes from build.opt are shown to user * Updated text * oops * Expanded comment and made print help consistent * Improve handling stderr/stdout with "no verbose output" Grouped helpful info to print at the end. Added missing return value. * Correct timestamp on CommonHFile.h More improvements to printing Updated docs. * Added command-line parser Support hints for compiler.cache_core. For use when Arduino IDE uses command-line options that override compiler.cache_core. Removed overuse of () Improve FAQ entry * Fix script failure under windows Rely on argpaser for checking that all arguments are present. Removed redundant argument check in main(). Added '--debug' option and print_dbg method. Rethink failures on overrides. Remove well know path fallbacks, error exit when override file is missing. In well-known path search for preferences.txt, do not assume true. Make failure to find an error exit event. When Windows has two preferences.txt files and they have different values for caching and globals.h is used, error exit. It is not possible to know from the script which is being used. * Use quotes on build.opt Update comment Include the @ within the expantion string use quotes around file name. Update doc example to remind and use quotes. * Update CI for build option and global support Added "mkbuildoptglobals.extra_flags=--cache_core" to platform.loca.txt Update "-ide-version=10802" this version number indicates aggressive caching support Added example to test global .h support * Add debug prints Added --debug to CI - this needs to be removed later Tweaks to touch... * Give each build VM a unique build.tmp space * Corrected style on example temp CI changes debug crud Added --ci switch * Removed CI debug crud run_CI_locall.sh works fine locally. Hosted Multi-VM CI fails to work with 'aggressive caching' workaround method. Add #if defined(CORE_MOCK) to failing example. * Try HOST_MOCK * CI adjustments mkbuildoptglobals.py is optimized around the Arduino IDE 1.x behaviour. One way the CI differs from the Arduino IDE is in the handling of core and caching core. With the Arduino IDE, each sketch has a private copy of core and contributes to a core cache. With the CI, there is one shared copy of core for all sketches. When global options are used, the shared copy of core and cache are removed before and after the build. * Doc update
Arduino core for ESP8266 WiFi chip
Quick links
Arduino on ESP8266
This project brings support for the ESP8266 chip to the Arduino environment. It lets you write sketches, using familiar Arduino functions and libraries, and run them directly on ESP8266, with 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, and work with SD cards, servos, SPI and I2C peripherals.
Contents
- Installing options:
- Documentation
- Issues and support
- Contributing
- License and credits
Installing with Boards Manager
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 1.8.9 level or later. The current version is on the Arduino website.
- Start Arduino and open the Preferences window.
- Enter
https://arduino.esp8266.com/stable/package_esp8266com_index.jsoninto the File>Preferences>Additional Boards Manager URLs field of the Arduino IDE. You can add multiple URLs, separating them with commas. - Open Boards Manager from Tools > Board menu and install esp8266 platform (and don't forget to select your ESP8266 board from Tools > Board menu after installation).
Latest release 
Boards manager link: https://arduino.esp8266.com/stable/package_esp8266com_index.json
Documentation: https://arduino-esp8266.readthedocs.io/en/3.0.2/
Using git version
Also known as latest git or master branch.
- Install the current upstream Arduino IDE at the 1.8 level or later. The current version is on the Arduino website.
- Follow the instructions in the documentation.
Using PlatformIO
PlatformIO is an open source ecosystem for IoT development with a cross-platform build system, a library manager, and full support for Espressif (ESP8266) development. It works on the following popular host operating systems: macOS, Windows, Linux 32/64, and 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
Building with make
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
Documentation for latest development version: https://arduino-esp8266.readthedocs.io/en/latest/
Issues and support
ESP8266 Community Forum is a well-established community for questions and answers about Arduino for ESP8266. Stackoverflow is also an alternative. If you need help, have a "How do I..." type question, have a problem with a 3rd party library not hosted in this repo, or just want to discuss how to approach a problem, please ask there.
If you find the 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, or if you want to propose an enhancement, you are welcome to submit it here on Github: https://github.com/esp8266/Arduino/issues.
Please provide as much context as possible, as well as the information requested in the issue template:
- 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, see Github markdown manual
- when encountering an issue that happens at run time, attach the serial output. Wrap it into a code block, just like the code.
- for issues that 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 choice, flash size)
- etc
Contributing
For minor fixes of code and documentation, please go ahead and submit a pull request. A gentle introduction to the process can be found here.
Check out the list of issues that are easy to fix — easy issues pending. 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. PRs with such changes require testing and approval.
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.
License and credits
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.py was initially created by Fredrik Ahlberg (@themadinventor, @kongo), and is currently maintained by Angus Gratton (@projectgus) under GPL 2.0 license.
Espressif's NONOS 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 the MIT license.
umm_malloc memory management library written by Ralph Hempel is used in this project. It is distributed under the MIT license.
SoftwareSerial library and examples written by Peter Lerup. Distributed under LGPL 2.1.
BearSSL library written by Thomas Pornin, built from https://github.com/earlephilhower/bearssl-esp8266, is used in this project. It is distributed under the MIT License.
LittleFS library written by ARM Limited and released under the BSD 3-clause license.
uzlib library written and (c) 2014-2018 Paul Sokolovsky, licensed under the ZLib license (https://www.zlib.net/zlib_license.html). uzlib is based on: tinf library by Joergen Ibsen (Deflate decompression); Deflate Static Huffman tree routines by Simon Tatham; LZ77 compressor by Paul Sokolovsky; with library integrated and maintained by Paul Sokolovsky.
Other useful links
Serial Monitor Arduino IDE plugin Original discussion here, quick download there.