nodemcu-firmware: Cant connect with STATION mode in my home router

Expected behavior

I am trying to connect to my router. Simple and easy.

Actual behavior

I can’t connect and don’t know the reason. The issue only happen with my home router. If I create a Personal Hotspot with my iPhone, for example, it works fine. I should add that my router is very simple, no blacklists, everyone can connect providing the correct ssid and pwd. All my computers, TVs and cellphones are connecting ok. The problem is the nodemcu devkit only.

Test code

Nothing exceptional, I am just calling wifi.sta.config() with correct credentials. This is my program:

wifi.setmode(wifi.STATION)
wifi.sta.config("my ssid", "my pwd")

cont=1
tmr.alarm(1, 2000, 1, function()
   if wifi.sta.getip()==nil then
      print("Wait for IP "..cont.."--> "..wifi.sta.status())
      cont=cont+1
      if cont>20 then tmr.stop(1) end
   else
      print("New IP address is "..wifi.sta.getip())
      tmr.stop(1)
   end
end)

NodeMCU version

NodeMCU custom build by frightanic.com branch: master commit: ec265a6c21db22640795f190bdcb8a4f014cdced SSL: false modules: file,gpio,net,node,tmr,uart,wifi build built on: 2016-12-01 22:57 powered by Lua 5.1.4 on SDK 1.5.4.1(39cb9a32)

Hardware

It’s an NodeMCU devkit.

More info

If this help, I made a custom build with debug on and this is the results on ESPlorer: wifi_event_monitor_handle_event_cb is called reconnect scandone state: 0 -> 2 (b0) state: 2 -> 3 (0) state: 3 -> 0 (19)

Also, I can try any code you send to help testing.