Sin descripción

Philip Gladstone af39a0bc25 Upgrade to latest SPIFFS and add building of file systems (#1226) hace 8 años
.github 216c69f18b Update ISSUE_TEMPLATE.md hace 8 años
app af39a0bc25 Upgrade to latest SPIFFS and add building of file systems (#1226) hace 8 años
bin 3d99ea6833 Removed old SDK-provided bin files. hace 8 años
docs af39a0bc25 Upgrade to latest SPIFFS and add building of file systems (#1226) hace 8 años
examples 87351a2d10 consolidate telnet example hace 8 años
ld 501bd1fb9a Adds support for verifying the certificate offered by an SSL server. hace 8 años
local af39a0bc25 Upgrade to latest SPIFFS and add building of file systems (#1226) hace 8 años
lua_examples ae873b70c6 Add caching for multi-byte transfers (#1247) hace 8 años
lua_modules 6fcd554e9c Delered as per #475 and creation of the encoder module hace 8 años
sdk-overrides 9a7a2c4dc3 Merge pull request #1184 from devsaurus/user-gnu11 hace 8 años
tools af39a0bc25 Upgrade to latest SPIFFS and add building of file systems (#1226) hace 8 años
.gitignore 5bb80df304 Remove Eclipse project files hace 8 años
.travis.yml 498cc52ab3 Remove deploy section (#1300) hace 8 años
CONTRIBUTING.md e8ee825c25 Switch from readthedocs.org to readthedocs.io hace 8 años
LICENSE b249b8d5fe update doc hace 9 años
Makefile af39a0bc25 Upgrade to latest SPIFFS and add building of file systems (#1226) hace 8 años
README.md af39a0bc25 Upgrade to latest SPIFFS and add building of file systems (#1226) hace 8 años
mkdocs.yml af39a0bc25 Upgrade to latest SPIFFS and add building of file systems (#1226) hace 8 años

README.md

NodeMCU 1.5.1

Build Status Documentation Status License

A Lua based firmware for ESP8266 WiFi SOC

NodeMCU is an eLua based firmware for the ESP8266 WiFi SOC from Espressif. The firmware is based on the Espressif NON-OS SDK 1.5.1 and uses a file system based on spiffs. The code repository consists of 98.1% C-code that glues the thin Lua veneer to the SDK.

The NodeMCU firmware is a companion project to the popular NodeMCU dev kits, ready-made open source development boards with ESP8266-12E chips.

Summary

  • Easy to program wireless node and/or access point
  • Based on Lua 5.1.4 (without debug, os modules)
  • Asynchronous event-driven programming model
  • 40+ 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

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(conn, payload)
		print(payload)
		conn:send("<h1> Hello, NodeMCU.</h1>")
	end)
	conn:on("sent", function(conn) conn:close() end)
end)
-- connect to WiFi access point
wifi.setmode(wifi.STATION)
wifi.sta.config("SSID", "password")

Documentation

The entire NodeMCU documentation is maintained right in this repository at /docs. The fact that the API documentation is mainted 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.

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/dev/en/support/.

License

MIT © zeroday/nodemcu.com

Build Options

The following sections explain some of the options you have if you want to build your own NodeMCU firmware.

Select Modules

Disable modules you won’t be using to reduce firmware size and free up some RAM. The ESP8266 is quite limited in available RAM and running out of memory can cause a system panic. The default configuration is designed to run on all ESP modules including the 512 KB modules like ESP-01 and only includes general purpose interface modules which require at most two GPIO pins.

Edit app/include/user_modules.h and comment-out the #define statement for modules you don’t need. Example:

...
#define LUA_USE_MODULES_MQTT
// #define LUA_USE_MODULES_COAP
// #define LUA_USE_MODULES_U8G
...

Tag Your Build

Identify your firmware builds by editing app/include/user_version.h

#define NODE_VERSION    "NodeMCU 1.5.1+myname"
#ifndef BUILD_DATE
#define BUILD_DATE      "YYYYMMDD"
#endif

Set UART Bit Rate

The initial baud rate at boot time is 115200bps. You can change this by editing BIT_RATE_DEFAULT in app/include/user_config.h:

#define BIT_RATE_DEFAULT BIT_RATE_115200

Note that, by default, the firmware runs an auto-baudrate detection algorithm so that typing a few characters at boot time will cause the firmware to lock onto that baud rate (between 1200 and 230400).

Debugging

To enable runtime debug messages to serial console edit app/include/user_config.h

#define DEVELOP_VERSION