diff --git a/README.md b/README.md index 1c229bda..08464f31 100644 --- a/README.md +++ b/README.md @@ -1,29 +1,29 @@ # NodeMCU 3.0.0 +> Lua-based firmware for ESP8266 WiFi SOC [![Join the chat at https://gitter.im/nodemcu/nodemcu-firmware](https://img.shields.io/gitter/room/badges/shields.svg)](https://gitter.im/nodemcu/nodemcu-firmware?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge) [![CI](https://github.com/nodemcu/nodemcu-firmware/actions/workflows/build.yml/badge.svg)](https://github.com/nodemcu/nodemcu-firmware/actions/workflows/build.yml) [![Documentation Status](https://img.shields.io/badge/docs-release-yellow.svg?style=flat)](http://nodemcu.readthedocs.io/en/release/) -[![License](https://img.shields.io/badge/license-MIT-blue.svg?style=flat)](https://github.com/nodemcu/nodemcu-firmware/blob/release/LICENSE) - -### A Lua based firmware for ESP8266 WiFi SOC +[![License](https://img.shields.io/badge/license-MIT-blue.svg?style=flat)](#license) NodeMCU is an open source [Lua](https://www.lua.org/) based firmware for the [ESP8266 WiFi SOC from Espressif](https://www.espressif.com/en/products/socs/esp8266) and uses an on-module flash-based [SPIFFS](https://github.com/pellepl/spiffs) file system. NodeMCU is implemented in C and is layered on the [Espressif NON-OS SDK](https://github.com/espressif/ESP8266_NONOS_SDK). The firmware was initially developed as is a companion project to the popular ESP8266-based [NodeMCU development modules]((https://github.com/nodemcu/nodemcu-devkit-v1.0)), but the project is now community-supported, and the firmware can now be run on _any_ ESP module. -# Summary +## Summary - Easy to program wireless node and/or access point - Based on Lua 5.1.4 or Lua 5.3 but without `debug`, `io`, `os` and (most of the) `math` modules - Asynchronous event-driven programming model -- more than **70 built-in C modules** and **close to 20 Lua modules** +- More than **70 built-in C modules** and **close to 20 Lua modules** - Firmware available with or without floating point support (integer-only uses less memory) - Up-to-date documentation at [https://nodemcu.readthedocs.io](https://nodemcu.readthedocs.io) ### LFS support + In July 2018 support for a Lua Flash Store (LFS) was introduced. LFS allows Lua code and its associated constant data to be executed directly out of flash-memory; just as the firmware itself is executed. This now enables NodeMCU developers to create **Lua applications with up to 256Kb** Lua code and read-only constants executing out of flash. All of the RAM is available for read-write data! -# Programming Model +## Programming Model The NodeMCU programming model is similar to that of [Node.js](https://en.wikipedia.org/wiki/Node.js), only in Lua. It is asynchronous and event-driven. Many functions, therefore, have parameters for callback functions. To give you an idea what a NodeMCU program looks like study the short snippets below. For more extensive examples have a look at the [`/lua_examples`](lua_examples) folder in the repository on GitHub. @@ -44,27 +44,33 @@ wifi.setmode(wifi.STATION) wifi.sta.config{ssid="SSID", pwd="password"} ``` -# Documentation +## Documentation The entire [NodeMCU documentation](https://nodemcu.readthedocs.io) is maintained right in this repository at [/docs](docs). The fact that the API documentation is maintained in the same repository as the code that *provides* the API ensures consistency between the two. With every commit the documentation is rebuilt by Read the Docs and thus transformed from terse Markdown into a nicely browsable HTML site at [https://nodemcu.readthedocs.io](https://nodemcu.readthedocs.io). + +Pages: + - How to [build the firmware](https://nodemcu.readthedocs.io/en/release/build/) - How to [flash the firmware](https://nodemcu.readthedocs.io/en/release/flash/) - How to [upload code and NodeMCU IDEs](https://nodemcu.readthedocs.io/en/release/upload/) - API documentation for every module -# Releases + +## Releases Due to the ever-growing number of modules available within NodeMCU, pre-built binaries are no longer made available. Use the automated [custom firmware build service](http://nodemcu-build.com/) to get the specific firmware configuration you need, or consult the [documentation](http://nodemcu.readthedocs.io/en/release/build/) for other options to build your own firmware. This project uses two main branches, `release` and `dev`. `dev` is actively worked on and it's also where PRs should be created against. `release` thus can be considered "stable" even though there are no automated regression tests. The goal is to merge back to `release` roughly every 2 months. Depending on the current "heat" (issues, PRs) we accept changes to `dev` for 5-6 weeks and then hold back for 2-3 weeks before the next snap is completed. -A new tag is created every time `dev` is merged back to `release`. They are listed in the [releases section here on GitHub](https://github.com/nodemcu/nodemcu-firmware/releases). Tag names follow the \-release_yyyymmdd pattern. +A new tag is created every time the `dev` branch is merged back to `release`. They are listed in this repo's [releases](https://github.com/nodemcu/nodemcu-firmware/releases). -# Support +Tag names follow the `-release_yyyymmdd` pattern. + +## Support See [https://nodemcu.readthedocs.io/en/release/support/](https://nodemcu.readthedocs.io/en/release/support/). -# License +## License -[MIT](https://github.com/nodemcu/nodemcu-firmware/blob/release/LICENSE) © [zeroday](https://github.com/NodeMCU)/[nodemcu.com](http://nodemcu.com/index_en.html) +[MIT](/LICENSE) © [zeroday](https://github.com/NodeMCU)/[nodemcu.com](http://nodemcu.com/index_en.html)