nodemcu script to connect to wifi

connect_to_wifi.lua

function connect_to_wifi(ssid, password, callback)
    wifi.setmode(wifi.STATION)
    wifi.sta.config(ssid, password)

    wifi.sta.connect()

    secondsWaited = 0
    secondsToWait = 15

    -- WIFI CONNECT HAS ALARM ID 0
    tmr.alarm(0, 1000, 1, function()
        
        -- test if connected yet
        if wifi.sta.status() == 5 then
            tmr.stop(0)
            print("Connected to: " .. ssid)
            callback(true)
        else
            secondsWaited = secondsWaited + 1

            if secondsWaited > secondsToWait then
                tmr.stop(0)
                print("Could not connect to: " .. ssid)
                print("Reason: " .. wifi.sta.status())
                callback(false)
            end
        end
    end)
end