863dfb59ed
* Remove stale putative MD2 support This hasn't worked in a while, presumably since one of our upstream merges. Don't bother making it work, since MD2 is generally considered insecure. * Land mbedtls 2.16.3-77-gf02988e57 * TLS: remove some dead code from espconn_mbedtls There was some... frankly kind of scary buffer and data shuffling if ESP8266_PLATFORM was defined. Since we don't, in fact, define that preprocessor symbol, just drop the code lest anyone (possibly future-me) be scared. * TLS: espconn_mbedtls: run through astyle No functional changes * TLS: espconn_mbedtls: put the file_params on the stack There's no need to malloc a structure that's used only locally. * TLS: Further minor tidying of mbedtls glue What an absolute shitshow this is. mbedtls should absolutely not be mentioned inside sys/socket.h and app/mbedtls/app/lwIPSocket.c is not so much glue as it as a complete copy of a random subset of lwIP; it should go, but we aren't there yet. Get rid of the mysterious "mbedlts_record" struct, which housed merely a length of bytes sent solely for gating the "record sent" callback. Remove spurious __attribute__((weak)) from symbols not otherwise defined and rename them to emphasize that they are not actually part of mbedtls proper. * TLS: Rampage esp mbedtls glue and delete unused code This at least makes the shitshow smaller * TLS: lwip: fix some memp definitions I presume these also need the new arguments * TLS: Remove more non-NodeMCU code from our mbedtls * TLS: drop support for 1.1 Depending on who you ask it's either EOL already or EOL soon, so we may as well get rid of it now. |
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| .github | ||
| app | ||
| bin | ||
| docs | ||
| ld | ||
| local | ||
| lua_examples | ||
| lua_modules | ||
| lua_tests | ||
| msvc | ||
| sdk-overrides/include | ||
| tools | ||
| .gdbinit | ||
| .gdbinitlua | ||
| .gitignore | ||
| .gitmodules | ||
| .travis.yml | ||
| CONTRIBUTING.md | ||
| LICENSE | ||
| Makefile | ||
| README.md | ||
| mkdocs.yml | ||
| rtd-requirements.txt | ||
README.md
NodeMCU 3.0.0
A Lua based firmware for ESP8266 WiFi SOC
NodeMCU is an open source Lua based firmware for the ESP8266 WiFi SOC from Espressif and uses an on-module flash-based SPIFFS file system. NodeMCU is implemented in C and is layered on the Espressif NON-OS SDK.
The firmware was initially developed as is a companion project to the popular ESP8266-based NodeMCU development modules, but the project is now community-supported, and the firmware can now be run on any ESP module.
Summary
- Easy to program wireless node and/or access point
- Based on Lua 5.1.4 but without
debug,io,osand (most of the)mathmodules - Asynchronous event-driven programming model
- more than 65 built-in modules
- Firmware available with or without floating point support (integer-only uses less memory)
- Up-to-date documentation at 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
The NodeMCU programming model is similar to that of 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 folder in the repository on GitHub.
-- a simple HTTP server
srv = net.createServer(net.TCP)
srv:listen(80, function(conn)
conn:on("receive", function(sck, payload)
print(payload)
sck:send("HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n<h1> Hello, NodeMCU.</h1>")
end)
conn:on("sent", function(sck) sck:close() end)
end)
-- connect to WiFi access point
wifi.setmode(wifi.STATION)
wifi.sta.config{ssid="SSID", pwd="password"}
Documentation
The entire NodeMCU documentation is maintained right in this repository at /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.
- How to build the firmware
- How to flash the firmware
- How to upload code and NodeMCU IDEs
- API documentation for every module
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 to get the specific firmware configuration you need, or consult the documentation for other options to build your own firmware.
This project uses two main branches, master and dev. dev is actively worked on and it's also where PRs should be created against. master thus can be considered "stable" even though there are no automated regression tests. The goal is to merge back to master 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 master. They are listed in the releases section here on GitHub. Tag names follow the <SDK-version>-master_yyyymmdd pattern.
Support
See https://nodemcu.readthedocs.io/en/master/en/support/.