Lua script for Building a kid’s sleep training clock using NodeMCU and Parse (Prototype)

init.lua

function changeLED(on)
    pin = 1
    gpio.mode(pin,gpio.OUTPUT)
    if on == true
        then gpio.write(pin,gpio.HIGH) end
    if on == false
        then gpio.write(pin,gpio.LOW) end
end

changeLED(false)

--- Config
SSID       = "WIFI_NAME"
PASSWORD   = "WIFI_PASSWORD"
TIMEOUT    = 30000000 -- 30s

--- Station modes
STAMODE = {
  STATION_IDLE             = 0,
  STATION_CONNECTING       = 1,
  STATION_WRONG_PASSWORD   = 2,
  STATION_NO_AP_FOUND      = 3,
  STATION_CONNECT_FAIL     = 4,
  STATION_GOT_IP           = 5
}



--- Connect to WIFI and then periodically send data to ThingSpeak.com
function connect(timeout)
  local time = tmr.now()
  wifi.sta.connect()

  -- Wait for IP address; check each 1000ms; timeout
  tmr.alarm(1, 1000, 1,
    function()
      if wifi.sta.status() == STAMODE.STATION_GOT_IP then
        tmr.stop(1)
        print("Station: connected! IP: " .. wifi.sta.getip())
        checkSleepTimer()
        tmr.alarm(0, 60000, 1, function() checkSleepTimer() end )
      else
      if tmr.now() - time > timeout then
        tmr.stop(1)
        print("Timeout!")
        if wifi.sta.status() == STAMODE.STATION_IDLE
          then print("Station: idling") end
        if wifi.sta.status() == STAMODE.STATION_CONNECTING
          then print("Station: connecting") end
        if wifi.sta.status() == STAMODE.STATION_WRONG_PASSWORD
          then print("Station: wrong password") end
        if wifi.sta.status() == STAMODE.STATION_NO_AP_FOUND
          then print("Station: AP not found") end
        if wifi.sta.status() == STAMODE.STATION_CONNECT_FAIL
          then print("Station: connection failed") end
      end
    end
  end)
end

--- Get temp and send data to thingspeak.com
function checkSleepTimer()

    conn=net.createConnection(net.TCP, 0)
    conn:on("receive", function(conn, payload)
        print(payload)
        if string.find(payload,"false") == nil
            then changeLED(true)
        else
            changeLED(false) end
        conn:close()
    end)
    conn:connect(80, "IP-YOUR-PARSE-APP")
    conn:send("GET /is-timer-on HTTP/1.1\r\nHost: NAME-OF-YOUR-PARSE-APP.parseapp.com\r\n"
        .. "Connection: keep-alive\r\nAccept: */*\r\n\r\n")

  conn:on("disconnection", function(conn)
    print("Got disconnection...")
  end)




end

--- Main
print("Setting up Wi-Fi connection..")
wifi.setmode(wifi.STATION)
wifi.sta.config(SSID, PASSWORD)
connect(TIMEOUT)