init.lua

-- init.lua
--
-- Simple lua script to get started. Will blink the esp8266's
-- onboard LED while not connected to a wifi access point, and
-- keep it lit up after a connection is established

seconds = 1000

ledBlinkTimer     = 1
ledBlinkTimeout   = seconds / 10
ledPin            = 4
ledStatus         = gpio.LOW

function blinkWifiStatus() 
  ip, nm, gw = wifi.sta.getip()

  if not ip then
    if ledStatus == gpio.HIGH then
      ledStatus = gpio.LOW
    else
      ledStatus = gpio.HIGH
    end
  else
    ledStatus = gpio.LOW
  end

  gpio.write(ledPin, ledStatus)

end

gpio.mode(ledPin, gpio.OUTPUT)
tmr.alarm(ledBlinkTimer, ledBlinkTimeout, tmr.ALARM_AUTO, blinkWifiStatus)
wifi.setmode(wifi.STATION)

-- uncommenting the following would connect to a wifi network "MyAccessPoint"
-- using the password "MyPassword"
-- wifi.sta.config("MyAccessPoint", "MyPassword")