After 15 hours of work on this problem, I think I solve the problem.
My NodeMcu have 4 scripts in Lua that makes my aplication for wifi connection stable.
First is init.lua (for now I have test.lua):
Code: Select allprint("ESP8266 module start")
app = require("application")
config = require("config")
setup = require("setup")
setup.start() second is config.lua:
Code: Select alllocal module = {}
module.SSID = {}
module.SSID["mySSID"] = "myWifiPass"
module.BROKER = "m20.cloudmqtt.com"
module.UN = 'myUsername'
module.PS = 'myPassword'
module.RECONNECT = 0
module.QOS = 0
module.PORT = 12986
module.KEEPALIVE = 120
module.ID = node.chipid()
module.SUBPOINT = "temp/status"
module.PUBPOINT = "temp/messages"
module.RETAIN = 0
module.GETTIME = "test/gettime"
module.PRINTTIME = "test/printtime"
return module then setup.lua:
Code: Select alllocal module = {}
local function wifi_wait_ip()
if wifi.sta.getip()== nil then
print("IP unavailable, Waiting...")
else
tmr.stop(1)
print("\n====================================")
print("ESP8266 mode is: " .. wifi.getmode())
print("MAC address is: " .. wifi.ap.getmac())
print("IP is "..wifi.sta.getip())
print("====================================")
app.start()
end
end
local function wifi_start(list_aps)
if list_aps then
for key,value in pairs(list_aps) do
if config.SSID and config.SSID[key] then
wifi.setmode(wifi.STATION);
wifi.sta.config(key,config.SSID[key])
wifi.sta.connect()
print("Connecting to " .. key .. " ...")
--config.SSID = nil -- can save memory
tmr.alarm(1, 2500, 1, wifi_wait_ip)
print("Connected!")
end
end
else
print("Error getting AP list")
end
end
function module.start()
print("Configuring Wifi ...")
wifi.setmode(wifi.STATION);
wifi.sta.getap(wifi_start)
end
return module
and final is application.lua:
Code: Select alllocal module = {}
m = nil
-- Toggling LED or Relay - signal OUT
local pin = 4 --> GPIO2
local value = gpio.LOW
gpio.mode(pin, gpio.OUTPUT)
gpio.write(pin, value)
local function pingTime()
m:publish(config.GETTIME, "gettime", config.QOS, config.RETAIN, function(conn)
end)
end
local function toggleLed (pPin, pValue)
gpio.write(pPin, pValue)
end
-- Sends my id to the broker for registration
local function register_myself()
print("Subscribing...")
m:subscribe({[config.SUBPOINT]=config.QOS, [config.PRINTTIME]=config.QOS, nil})
end
local function mqtt_start()
-- Connect to broker
m:connect(config.BROKER, config.PORT, config.QOS, config.RECONNECT, function(con)
print("Connected!")
register_myself()
pingTime()
end,
function(client, reason)
print("failed reason: " .. reason)
end)
-- on receive message
m:on("message", function(conn, topic, data)
print(topic .. ":" )
if data ~= nil then
print(data)
-- do something, we have received a message
if data == "1" then
print("On")
toggleLed(pin, gpio.HIGH)
end
if data == "0" then
print("Off")
toggleLed(pin, gpio.LOW)
end
end
end)
-- This is part when wifi disconnects and I tested it for 5 minutes connecting wifi back and this works
m:on("offline", function(client)
print ("Offline " .. config.ID)
--print(node.heap())
tmr.start(1)
print("Configuring Wifi ...")
wifi.setmode(wifi.STATION);
wifi.sta.getap(wifi_start)
end)
print("Connecting to broker...")
end
--------------------- Wifi part again ----------------------------------
local function wifi_wait_ip()
if wifi.sta.getip()== nil then
print("IP unavailable, Waiting...")
else
tmr.stop(1)
print("\n====================================")
print("ESP8266 mode is: " .. wifi.getmode())
print("MAC address is: " .. wifi.ap.getmac())
print("IP is "..wifi.sta.getip())
print("====================================")
--app.start()
return true
end
end
local function wifi_start(list_aps)
if list_aps then
for key,value in pairs(list_aps) do
if config.SSID and config.SSID[key] then
wifi.setmode(wifi.STATION);
wifi.sta.config(key,config.SSID[key])
wifi.sta.connect()
print("Connecting to " .. key .. " ...")
--config.SSID = nil -- can save memory
tmr.alarm(1, 5000, 1, wifi_wait_ip)
print("Connected!")
end
end
else
print("Error getting AP list")
end
end
-------------------------------------------
function module.start()
print("Starting MQTT module...")
-- initiate the mqtt client and set keepalive timer to 120sec
m = mqtt.Client(config.ID, config.KEEPALIVE, config.UN, config.PS)
m:lwt("temp/messages", "Offline " .. config.ID, 0, 0)
mqtt_start()
end
return module
If you find bugs or inappropriate behavior, please let me know!
Thanx,
Faramon
Posted: Fri Apr 07, 2017 1:55 am