Where to find more information on error messages?

Posted on Wed 7th, February 2018

• #1

ESP32
A sometimes error message occurs when serving a web page.

>E (36271) wifi: pp.c 3126

Is there a reference where this can be found?

The program:

//ESP32wifiDweetServec.js
// 6 Feb2018

// http://www.espruino.com/Reference#Wifi

var ssid="myssid";
var key="mypassword";
var port = 8080;
//set DweetID to a unique value
var DweetID="lovelyDay898";  // make up your own phrase
// Use the following to get the Dweet containing the IP address
// https://dweet.io/get/latest/dweet/for/lovelyDay898
/////////////////////
// Some globals
var tasknumber=0;
var IP;
var MAC;
var myinterval;

var Clock = require("clock").Clock;
var date=new Date();
//console.log(date);
//console.log(date.toString());

var clk=new Clock(date.toString());
console.log(clk.getDate().toString());

var wifi = require('Wifi');


function putDweet(dweet_name, a, callback) {
  var data = "";
  for (var n in a) {
    if (data.length) data+="&";
    data += encodeURIComponent(n)+"="+encodeURIComponent(a[n]); 
  }
  var options = {
    host: 'dweet.io',
    port: '80',
    path:'/dweet/for/'+dweet_name+"?"+data,
    method:'POST'
  };
//  console.log(options);
  var http=require("http");
console.log(options);
  require("http").request(options, function(res)  {
    var d = "";
    res.on('errpr',function(e){console.log("err ",e);});
    res.on('data', function(dta) { d+=dta;});
    res.on('close', function(dta) {
      d+=dta;
//      console.log("d= ",d);
      if (callback) callback(d);
    });
 }).end();
}


function mytask1(){
 console.log("Mytask 1");
 putDweet(DweetID, {IP:IP}, function(d) {
//   console.log(d);
   var L = JSON.parse(d);
//   console.log(L);
   var x1= L.with.created;
//  console.log("x1=",x1);
  clk.setClock(Date.parse(x1));
  console.log(clk.getDate().toString());
  tasknumber=1;
  wifi.disconnect();
 });//end putDweet
//// end user code  
}//end my task1


//////////////////////////////////////////////////////
var page1 = "<!DOCTYPE html>\r\n<html>\r\n<body>\r\n\r\n<h1>My First Web Page</h1>\r\n<p>My first paragraph.";
var page2="</p>\r\n\r\n<script>\r\ndocument.write(5 + 6);\r\n</script>\r\n\r\n</body>\r\n</html>";

function mytask2(){
 console.log("Mytask 2");
//// Various user code can go here a simple hello page server
//// is given as an example
var http=require('http').createServer(function (req, res) {
res.writeHead(200);
 console.log("hello");
 res.write(page1);
 res.write(clk.getDate().toString());
 res.write(page2);
 res.end();
 res.on('close', function() {console.log("resclose");  });
 req.on('data',function(data){console.log("req=",data);});
 req.on('error',function(){console.log("reqerr");});
 req.on('close',function(){console.log("reqcls");});
}).listen(8080); //end server
//// end user code  
}//end my task2

 
function mytask(){
 switch (tasknumber){
  case 0:
   mytask1();
  break;
  case 1:
   clearInterval( myinterval);
   mytask2();
  break;
  default:
   tasknumber=0;
  }//end switch
}//end mytask

var onWiFiConnect=function(){
  var IPobject= wifi.getIP();
IPobject= wifi.getIP();
  //var 
   IP = IPobject.ip;
   //var
   MAC = IPobject.mac;
   console.log("IP:");
   console.log(IP);
   console.log("MAC:");
   console.log(MAC);
   mytask();
};



wifi.on('disconnected', function(details) { 
  console.log("disconnected");
  wifi.connect(ssid, {password: key},onWiFiConnect());
});

setTimeout(function () {
  console.log("start");
//  wifi.disconnect();
  wifi.connect(ssid, {password: key},onWiFiConnect());
}, 3000);

And the output with tasknumber=1 to skip the dweet code

 1v95 Copyright 2017 G.Williams
Espruino is Open Source. Our work is supported
only by sales of official boards and donations:
http://espruino.com/Donate
>Thu Jan 1 1970 00:00:00 GMT+0000
>
=undefined
start
IP:
0.0.0.0
MAC:
24:0a:c4:00:97:2a
Mytask 2
hello
reqcls
t2close
hello
reqcls
t2close
>E (36271) wifi: pp.c 3126

It serves the page, sometimes several times and then dies with this error.

• #2

Wilberforce

Unfortunately the wifi libs for the ESP-idf are supplied as headers and compiled libs, so the source for pp.c is not available.

We are using the older version of the libs esp-idf 2.1 from memory.

You could try the forums at esp32.com and see if you get an answer there.

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Where to find more information on error messages?

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