NodeMCU Init script to avoid semi-brick on infinite loops

init.lua

local IDLE_AT_STARTUP_MS = 5000;
local DELTA = 1000

local current = 0

local function printRimanente()
    local rimanente = (IDLE_AT_STARTUP_MS - current)
    print("Caricamento. Hai ancora " .. rimanente .. "ms per annullare modificando program.lua...")
end

printRimanente()
local mainTimer = tmr.create()
mainTimer:register(DELTA, tmr.ALARM_AUTO, function(t)
    if current >= (IDLE_AT_STARTUP_MS - DELTA) then
        t:unregister()
        print("==> Avvio del programma.")
        dofile("program.lua")--Write your program name in dofile
    else
        current = current + DELTA
        printRimanente()
    end
end)
mainTimer:start()