Connect to WiFi

init.lua

-- init.lua --


WIFI_SSID = "fill out"
WIFI_PASS = "fill out"

wifiReady = 0
WIFI_LED = 0

WIFI_ALARM_ID = 0
WIFI_LED_BLINK_ALARM_ID = 1


gpio.write(0, gpio.LOW)




function configureWiFi()
    print("Startup up wifi mode")
    wifi.setmode(wifi.STATION)
    wifi.sta.config(WIFI_SSID, WIFI_PASS)
    wifi.sta.autoconnect(1)
    wifi.sta.connect()
    tmr.alarm(WIFI_ALARM_ID, 2000, 1, wifi_watch)
end

function run() 
    print("run")
    print(wifi.sta.getip())

-- Run the main file
--dofile("main.lua")

end


-- while NOT connected to WiFi you blink a LED, see below
function wifi_watch()
    -- 0: STATION_IDLE,
    -- 1: STATION_CONNECTING,
    -- 2: STATION_WRONG_PASSWORD,
    -- 3: STATION_NO_AP_FOUND,
    -- 4: STATION_CONNECT_FAIL,
    -- 5: STATION_GOT_IP.
    status = wifi.sta.status()
    if status == 5 then
        print("WiFi: connected")
        print(wifi.sta.getip())
        turnWiFiLedOff()
        if (wifiReady == 0) then 
            wifiReady = 1            
            run()
        end  
    else
        print("WiFi: (re-)connecting")
        wifiReady = 0
        turnWiFiLedOnOff()
        wifi.sta.connect()
    end
end
function turnWiFiLedOnOff()
    turnWiFiLedOn()
    tmr.alarm(WIFI_LED_BLINK_ALARM_ID, 500, 0, function()
        turnWiFiLedOff()
    end)
end
function turnWiFiLedOn()
    gpio.write(WIFI_LED, gpio.LOW)
end
function turnWiFiLedOff()
    gpio.write(WIFI_LED, gpio.HIGH)
end 



configureWiFi()



 

Your script works for me if I uncomment line 59. The ESP need probably more than 2 seconds to connect and the subsequent wifi.sta.connect() re-triggers this process.

A different approach for init.lua is wifi.sta.eventMonReg(). It's an elegant way to trigger activity once an IP was assigned:

wifi.sta.eventMonReg(wifi.STA_GOTIP,
    function()
        print("Got IP, starting...")
        wifi.sta.eventMonStop("unreg all")
        local s,err
        local basename = "main_script"
        if file.open(basename..".lc") then
            file.close()
            s,err = pcall(function() dofile(basename..".lc") end)
        else
            s,err = pcall(function() dofile(basename..".lua") end)
        end
        if not s then print(err) end
    end
)

wifi.sta.eventMonStart()