Problems connecting to wifi ap

[espruino-discuss]

Posted at 2018-09-19 by rmd6502

I'm running the 1v99 release on an AI-Thinker ESP-12Q module (4MB flash), trying to connect to a Linksys EA7500 running firmware 2.0.6.190009.
My problem is the Wifi.connect fails with 'bad password' 90% of the time. When I do connect, I don't remember the magic combination of resets, reconnects, and reloads I had to do to make it work (and it may not matter anyway). On a 1-year old thread someone posted that continual retries worked for them, I found that it would fail 9 times then hang on connect()
Example program attached.
Thanks in advance!

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Attachments:

• example.js

[espruino-discuss]

Posted at 2018-09-19 by @allObjects

I'd always put retry invocations to and/or within self into a setTimeout() in order to 'loose' context... and let resources go... yes, it may be in a callback, but still, code-connected things/references keep things a-life and resources blocked...

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Posted at 2018-09-19 by rmd6502

Thanks, I'll give that a try

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Posted at 2018-09-19 by Frida

I had problems with one of my router so I did this feature:

  var boola;
  function lan() {
    wlan.connect(logon.ssid, {password: logon.pass}, function (s) {
      boola = true;
      if(s==='bad password') {
        if(debug)console.log('restart lan');
        lan();
      }
    });

    if(debug)console.log("Frida is my watchdog");
    if(debug)console.log(wlan.getIP().ip);
  } // end lan()
  setTimeout(lan,400);


  wlan.on('connected', function(s) {
    if(debug)console.log('Starter test', wlan.getIP().ip);
    if(boola) {
      boola = false;
      startTimeServer();
      if(debug)console.log('tilsluttet lan');
    }
  });

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Posted at 2018-09-19 by Wilberforce

How are you loading code onto the board?

You seem to adding modules at run time loadModule('MQTT');'

If you use the web ide that is not necessary- and if connect with wifi and wifi.save() it will automatically reconnect when the board is powered up.

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Posted at 2018-09-19 by rmd6502

Yeah, I forgot that Javascript functions are closures, so even with the async callback it's still a recursive function :-/ @frida's setTimeout, but as a setInterval, to keep retrying until boola gets set instead of invoking lan from the connect callback (same problem IIUC, please explain if I don't!), and also letting the webide load MQTT for me (I originally was using telnet directly).

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Posted at 2018-09-20 by rmd6502

There must be something with my router that doesn't get along with the ESP. I even tried putting E.reboot() in the failure path and that didn't work either :-(

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Posted at 2018-09-21 by hungryforcodes

Did you try with other routers, and or using a mobile phone in "Mobile Hotspot" mode? This way you could get a hint wether the problem was with the ESP module or the router.