Cannot connect to Wifi after deep sleep.

[espruino-discuss3]

Posted at 2019-12-04 by user106328

Hi,

I'm trying to connect to wifi after deep sleep wakeup on ESP32. The initial run work, but after wake from deep sleep the code wifi.connect is not executed. It does not fall into error or success branch.

I would like to ask how to do it in the right way:

Firmware version:
espruino_2v03_esp32
device is connected throught the USB cable

var WIFI_NAME = "";
var WIFI_OPTIONS = { password : "" };
var wifi = require("Wifi");


function connectToWifi(){
  console.log("connectToWifi");
  wifi.connect(WIFI_NAME, WIFI_OPTIONS, function(err) {
  if (err) {
    console.log("Connection error: "+err);
    return;
  } else {
    console.log("Connected!");
    getPage();
  }
    console.log("End");
  });
};

function getPage() {
  require("http").get("http://www.pur3.co.uk/hello.txt", function(res) {
    console.log("Response: ",res);
    res.on('data', function(d) {
      console.log("--->"+d);
    });
  });
}



setInterval(function() {
  connectToWifi();
}, 10000);
setDeepSleep(1);

[espruino-discuss3]

Posted at 2019-12-04 by @gfwilliams

It depends how you saved the code but chances are you need to put the code you want to run at boot into a function called onInit

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Posted at 2019-12-04 by user106328

Thanks. I tried it in the following way but with the same result (even without deep sleep):

var WIFI_NAME = "";
var WIFI_OPTIONS = { password : "" };

function onInit() {
  wifi = require("Wifi");
 // Call to an function that kicks off my code
  setInterval(function() {
  connectToWifi();
  //setDeepSleep(1);
  }, 10000);
}

function connectToWifi(){
  console.log("connectToWifi");
  var wifi = require("Wifi");
  wifi.connect(WIFI_NAME, WIFI_OPTIONS, function(err) {
  if (err) {
    console.log("Connection error: "+err);
    return;
  } else {
    console.log("Connected!");
    getPage();
  }
    console.log("End");
  });
}

function getPage() {
  require("http").get("http://www.pur3.co.uk/hello.txt", function(res) {
    console.log("Response: ",res);
    res.on('data', function(d) {
      console.log("--->"+d);
    });
  });
}

Calculating Size...
Writing..
Compressed 36800 bytes to 2742
Running onInit()...
connectToWifi
connectToWifi
connectToWifi
connectToWifi
connectToWifi
connectToWifi
connectToWifi
connectToWifi
connectToWifi
connectToWifi
save();

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Posted at 2019-12-04 by @allObjects

I do not know your IDE settings, but the idea here is to save() before running anything.

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Posted at 2019-12-05 by maze1980

I'd say it takes longer than 10s to connect to the Wifi initially, for whatever reason.