Wordclock/main.lua

-- Main Module
function startSetupMode()
    tmr.stop(0)
    tmr.stop(1)
    -- start the webserver module 
    mod="webserver"
    if (file.open(mod ..  ".lua")) then
      dofile( mod .. ".lua")
    else
      dofile(mod .. ".lc")
    end
    
    wifi.setmode(wifi.SOFTAP)
    cfg={}
    cfg.ssid="wordclock"
    cfg.pwd="wordclock"
    wifi.ap.config(cfg)
    print("Waiting in access point >wordclock< for Clients")
    print("Please visit 192.168.4.1")
    startWebServer()
end

print("Solving dependencies")
dependModules = { "timecore" , "wordclock", "displayword" }
for _,mod in pairs(dependModules) do
    print("Loading " .. mod)
    if (file.open(mod ..  ".lua")) then
      dofile( mod .. ".lua")
    else
      dofile(mod .. ".lc")
    end
end

ledPin=4
-- Color is defined as GREEN, RED, BLUE
color=string.char(0,0,250)

function syncTimeFromInternet()
--ptbtime1.ptb.de
    sntp.sync(sntpserverhostname,
     function(sec,usec,server)
      print('sync', sec, usec, server)
     end,
     function()
       print('failed!')
     end
   )
end

connect_counter=0
-- Wait to be connect to the WiFi access point. 
tmr.alarm(0, 500, 1, function()
  connect_counter=connect_counter+1
  if wifi.sta.status() ~= 5 then
     print("Connecting to AP...")
     if (connect_counter % 2 == 0) then
        ws2812.write(ledPin, string.char(255,0,0):rep(114))
     else
       ws2812.write(ledPin, string.char(0,0,0):rep(114))
     end
  else
    tmr.stop(0)
    print('IP: ',wifi.sta.getip())

    print("Start webserver...")
    tmr.alarm(2, 2000, 0 ,function()
        dofile("webserver.lua")
        startWebServer()
    end)
    
    
  end
  -- when no wifi available, open an accesspoint and ask the user
  if (connect_counter == 300) then -- 300 is 30 sec in 100ms cycle
    startSetupmode()
  end
end)

tmr.alarm(1, 15000, 1 ,function()
 sec, usec = rtctime.get()
 -- Include the timezone
 sec = sec + (timezoneoffset * 3600)
 
 time = getTime(sec, timezoneoffset)
 print("Local time : " .. time.year .. "-" .. time.month .. "-" .. time.day .. " " .. time.hour .. ":" .. time.minute .. ":" .. time.second)
 words = display_timestat(time.hour, time.minute)
 ledBuf = generateLEDs(words, color)
 -- Write the buffer to the LEDs
 ws2812.write(ledPin, ledBuf)

 -- Used for debugging
 if (clockdebug ~= nil) then
     for key,value in pairs(words) do 
        if (value > 0) then
          print(key,value) 
        end
     end
 end
 -- cleanup
 ledBuf=nil
 words=nil
 time=nil
 collectgarbage()
end)

-- Logic
if ( file.open("config.lua") ) then
    wifi.setmode(wifi.STATION)
    dofile("config.lua")
else
    startSetupMode()
end