esp_iot_sdk_v1.5.1_16_01_08 Release Note ---------------------------------------- Resolved Issues (Bugs listed below apply to Bug Bounty Program): 1.espconn_abort may cause system crash. Optimization: 1.Optimize the data receiving process under TCP connection. 2.Optimize low MAC and increase stability of the software. 3.Optimize watchdog feeding process. 4.Optimize softAP working mode so that some stations can be easily connected. 5.Optimize station working mode, enabling connection even when the SSID of the AP has changed. 6.Optimize station working mode, and increase router’s compatibility during the connection process. 7.Optimize SSL shakehand. 8.Optimize espconn internal timer. 9.Optimize UDP transmission. 10.Improve the flash writing process. 11.Strenthen WPA2 security protocols. 12.Improve data sending ability. 13.Straighten the control capability of GPIO16 under light sleep mode. 14.boot.bin is upgrade to version 1.5, resolving boot failure when firmware is upgraded over the air (OTA). AT release note: 1.Optimize the process of establishing TCP server via AT command. 2.Optimize UART-WiFi transparent transmission mode via AT command. Please be noted that with the release of NONOS SDK Version 1.5.0 (ESP8266_NONOS_SDK_V1.5.0), the space that AT commands occupies has increased to more than 4Mbit. Therefore, flash with 512Kbit capacity is no longer supported. Please choose flash with at least 8Mbit capacity. Please be noted that firmware upgrade over-the-air process is changed a bit. We will upgrade the latest firmware to Espressif Cloud server only after it has been tested and the overall performance is guaranteed. Users may not be able to download firmware encapsulated in ESP8266_NONOS_SDK_V1.5.0 and other more advanced versions.
Arduino core for ESP8266 WiFi chip
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.
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 Arduino 1.6.5 from the Arduino website.
- Start Arduino and open Preferences window.
- Enter
http://arduino.esp8266.com/stable/package_esp8266com_index.json
into Additional Board Manager URLs field. 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).
The best place to ask questions related to this core is ESP8266 community forum: http://www.esp8266.com/arduino.
If you find this forum or the ESP8266 Boards Manager package useful, please consider supporting it with a donation.
Available versions
Stable version 
Boards manager link: http://arduino.esp8266.com/stable/package_esp8266com_index.json
Documentation: http://esp8266.github.io/Arduino/versions/2.0.0/
Staging version 
Boards manager link: http://arduino.esp8266.com/staging/package_esp8266com_index.json
Documentation: http://esp8266.github.io/Arduino/versions/2.1.0-rc1/
Using git version 
- Install Arduino 1.6.7
- Go to Arduino directory
- Clone this repository into hardware/esp8266com/esp8266 directory (or clone it elsewhere and create a symlink)
cd hardware
mkdir esp8266com
cd esp8266com
git clone https://github.com/esp8266/Arduino.git esp8266
- Download binary tools (you need Python 2.7)
cd esp8266/tools
python get.py
- Restart Arduino
Using stable version with PlatformIO
PlatformIO is a cross-platform code-builder and library manager for embedded development with no external dependencies. Works on the popular host OS: Mac OS X, Windows, Linux 32/64, Linux ARM (like Raspberry Pi, BeagleBone, CubieBoard). More details in documentation What is PlatformIO? How does it work?.
See detailed instructions on how to use Espressif platform with PlatformIO.
Documentation
Documentation for latest development version:
Issues and support
If you encounter an issue, you are welcome to submit it here on Github: https://github.com/esp8266/Arduino/issues. Please provide as much context as possible: version which you are using (you can check it in Boards Manager), your sketch code, serial output, board model, IDE settings (board selection, flash size, etc).
Contributing
For minor fixes of code and documentation, go ahead and submit a pull request.
Larger changes (rewriting parts of existing code from scratch, adding new functions to the core, adding new libraries) should generally be discussed in the chat 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.
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 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.