My init.lua

--wifi config--
WIFI_SSID = "SSDNAME"
WIFI_PASSWORD = "PASSWORD"
WIFI_SIGNAL_MODE = wifi.PHYMODE_G

--ip config--
IP = "10.10.10.250"
NETMASK = "255.255.255.0"
GATEWAY = "10.10.10.1"

--connect to wifi--
wifi.setmode(wifi.STATION)
wifi.setphymode(WIFI_SIGNAL_MODE)
wifi.sta.config(WIFI_SSID, WIFI_PASSWORD)
wifi.sta.connect()

if ip ~= "" then
    wifi.sta.setip({ip=IP, netmask=NETMASK, gateway=GATEWAY})
end

print(wifi.sta.getip())

-- Start server after 2.5 sec.
tmr.alarm(0, 2500, 0, function()
    uart.on("data") -- stop listening UART.
    print "starting server..."
    require "server"
end)

-- Listen to UART data and stop the above timer in case of "qw" string was received.
uart.on("data", "w", function(d)
    if d == "qw" then
        tmr.stop(0) -- Stop timer. Server won't start.
        uart.on("data")
        print "cancelled."
    end
end, 0)