version 0.9.5
###A lua based firmware for wifi-soc esp8266
Build on ESP8266 sdk 0.9.5
Lua core based on eLua project
File system based on spiffs
Open source development kit for NodeMCU nodemcu-devkit
Flash tool for NodeMCU nodemcu-flasher
wiki: nodemcu wiki
api: nodemcu api
home: nodemcu.com
bbs: Chinese bbs
Tencent QQ group: 309957875
- Easy to access wireless router
- Based on Lua 5.1.4 (without io, math, debug, os module.)
- Event-Drive programming preferred.
- Build-in file, timer, pwm, i2c, spi, 1-wire, net, mqtt, gpio, wifi, adc, uart and system api.
- GPIO pin re-mapped, use the index to access gpio, i2c, pwm.
- fix wifi smart connect
- add spi module (done)
- add mqtt module (done)
- add coap module
- cross compiler
2015-01-27
support floating point LUA.
use macro LUA_NUMBER_INTEGRAL in user_config.h control this feature.
LUA_NUMBER_INTEGRAL to disable floating point support,
// LUA_NUMBER_INTEGRAL to enable floating point support.
build pre_build bin.
2015-01-26
applied sdk095_patch1 to sdk 0.9.5.
added LUA examples and modules by dvv.
added node.readvdd33() API by alonewolfx2.
build pre_build bin.
2015-01-24
migrate to sdk 0.9.5 release.
tmr.time() now return second(not precise yet).
build pre_build bin.
2015-01-23
merge mqtt branch to master.
build pre_build bin.
2015-01-18
merge mqtt module to new branch mqtt from https://github.com/tuanpmt/esp_mqtt.
merge spi module from iabdalkader:spi.
fix #110,set local port to random in client mode.
modify gpio.read to NOT set pin to input mode automatic.
add PATH env with C:\MinGW\bin;C:\MinGW\msys\1.0\bin;C:\Python27 in eclipse project. resolve #103.
2015-01-08
fix net.socket:send() issue when multi sends are called.
NOTE: if data length is bigger than 1460, send next packet AFTER "sent" callback is called.
fix file.read() api, take 0xFF as a regular byte, not EOF.
pre_build/latest/nodemcu_512k_latest.bin is removed. use pre_build/latest/nodemcu_latest.bin instead.
##GPIO NEW TABLE ( Build 20141219 and later)
| IO index | ESP8266 pin | IO index | ESP8266 pin |
|---|---|---|---|
| 0 [*] | GPIO16 | 8 | GPIO15 |
| 1 | GPIO5 | 9 | GPIO3 |
| 2 | GPIO4 | 10 | GPIO1 |
| 3 | GPIO0 | 11 | GPIO9 |
| 4 | GPIO2 | 12 | GPIO10 |
| 5 | GPIO14 | ||
| 6 | GPIO12 | ||
| 7 | GPIO13 |
#Build option ####file ./app/include/user_config.h
// #define FLASH_512K
// #define FLASH_1M
// #define FLASH_2M
// #define FLASH_4M
#define FLASH_AUTOSIZE
...
#define LUA_USE_MODULES
#ifdef LUA_USE_MODULES
#define LUA_USE_MODULES_NODE
#define LUA_USE_MODULES_FILE
#define LUA_USE_MODULES_GPIO
#define LUA_USE_MODULES_WIFI
#define LUA_USE_MODULES_NET
#define LUA_USE_MODULES_PWM
#define LUA_USE_MODULES_I2C
#define LUA_USE_MODULES_TMR
#define LUA_USE_MODULES_ADC
#define LUA_USE_MODULES_UART
#define LUA_USE_MODULES_OW
#define LUA_USE_MODULES_BIT
#endif /* LUA_USE_MODULES */
...
// LUA_NUMBER_INTEGRAL#Flash the firmware
nodemcu_latest.bin: 0x00000
for most esp8266 modules, just pull GPIO0 down and restart.
You can use the nodemcu-flasher to burn the firmware.
Or, if you build your own bin from source code.
0x00000.bin: 0x00000
0x10000.bin: 0x10000
Better run file.format() after flash
#Connect the hardware in serial baudrate:9600
#Start play
####Connect to your ap
ip = wifi.sta.getip()
print(ip)
--nil
wifi.setmode(wifi.STATION)
wifi.sta.config("SSID","password")
ip = wifi.sta.getip()
print(ip)
--192.168.18.110####Manipulate hardware like a arduino
pin = 1
gpio.mode(pin,gpio.OUTPUT)
gpio.write(pin,gpio.HIGH)
print(gpio.read(pin))####Write network application in nodejs style
-- A simple http client
conn=net.createConnection(net.TCP, 0)
conn:on("receive", function(conn, payload) print(payload) end )
conn:connect(80,"115.239.210.27")
conn:send("GET / HTTP/1.1\r\nHost: www.baidu.com\r\n"
.."Connection: keep-alive\r\nAccept: */*\r\n\r\n")####Or a simple http server
-- 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 MQTT Broker
-- init mqtt client with keepalive timer 120sec
m = mqtt.Client("clientid", 120, "user", "password")
-- setup Last Will and Testament (optional)
-- Broker will publish a message with qos = 0, retain = 0, data = "offline"
-- to topic "/lwt" if client don't send keepalive packet
m:lwt("/lwt", "offline", 0, 0)
m:on("connect", function(con) print ("connected") end)
m:on("offline", function(con) print ("offline") end)
-- on publish message receive event
m:on("message", function(conn, topic, data)
print(topic .. ":" )
if data ~= nil then
print(data)
end
end)
-- for secure: m:connect("192.168.11.118", 1880, 1)
m:connect("192.168.11.118", 1880, 0, function(conn) print("connected") end)
-- subscribe topic with qos = 0
m:subscribe("/topic",0, function(conn) print("subscribe success") end)
-- publish a message with data = hello, QoS = 0, retain = 0
m:publish("/topic","hello",0,0, function(conn) print("sent") end)
m:close();
-- you can call m:connect again
-- a udp server
s=net.createServer(net.UDP)
s:on("receive",function(s,c) print(c) end)
s:listen(5683)
-- a udp client
cu=net.createConnection(net.UDP)
cu:on("receive",function(cu,c) print(c) end)
cu:connect(5683,"192.168.18.101")
cu:send("hello")####Do something shining
function led(r,g,b)
pwm.setduty(1,r)
pwm.setduty(2,g)
pwm.setduty(3,b)
end
pwm.setup(1,500,512)
pwm.setup(2,500,512)
pwm.setup(3,500,512)
pwm.start(1)
pwm.start(2)
pwm.start(3)
led(512,0,0) -- red
led(0,0,512) -- blue####And blink it
lighton=0
tmr.alarm(1,1000,1,function()
if lighton==0 then
lighton=1
led(512,512,512)
else
lighton=0
led(0,0,0)
end
end)####If you want to run something when system started
--init.lua will be excuted
file.open("init.lua","w")
file.writeline([[print("Hello, do this at the beginning.")]])
file.close()
node.restart() -- this will restart the module.####With below code, you can telnet to your esp8266 now
-- a simple telnet server
s=net.createServer(net.TCP,180)
s:listen(2323,function(c)
function s_output(str)
if(c~=nil)
then c:send(str)
end
end
node.output(s_output, 0) -- re-direct output to function s_ouput.
c:on("receive",function(c,l)
node.input(l) -- works like pcall(loadstring(l)) but support multiple separate line
end)
c:on("disconnection",function(c)
node.output(nil) -- un-regist the redirect output function, output goes to serial
end)
print("Welcome to NodeMcu world.")
end)####Use DS18B20 module extends your esp8266
-- read temperature with DS18B20
t=require("ds18b20")
t.setup(9)
addrs=t.addrs()
-- Total DS18B20 numbers, assume it is 2
print(table.getn(addrs))
-- The first DS18B20
print(t.read(addrs[1],t.C))
print(t.read(addrs[1],t.F))
print(t.read(addrs[1],t.K))
-- The second DS18B20
print(t.read(addrs[2],t.C))
print(t.read(addrs[2],t.F))
print(t.read(addrs[2],t.K))
-- Just read
print(t.read())
-- Just read as centigrade
print(t.read(nil,t.C))
-- Don't forget to release it after use
t = nil
ds18b20 = nil
package.loaded["ds18b20"]=nil