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  • MQTT Restart on Connection Loss
    in ESP8266 •
    Avatar for Wilberforce

    you need to watch for wifi.on("connected") events - and in this function do your MQTT setup.

    So if the connection is dropped, or the board restarts, it will then run this code.

    There is some discussion on gitter about this - you might ask them to post their code so you can see how they have set it up...

    https://gitter.im/espruino/Espruino?at=58ee1f738e4b63533dbfad9e

    Something like:

    function Start() {
console.log("starting servers");
var http = require('http').createServer(onPageRequest);
http.listen(80);
}

var wifi=require("Wifi");

wifi.on('connected', Start );

  • Method GET Fails After Several Requests
    in ESP8266 •
    Avatar for Wilberforce

    Some of the builds reduce the jsvars from 1700 to 1600 to give more heap - perhaps you should try that.

  • Method GET Fails After Several Requests
    in ESP8266 •
    Avatar for Wilberforce

    I think you are running out of heap - E:M 656 I seem to recall is a failed memory allocation.

    I ran your code on the ESP32. I clicked the button on the browser as quick as could - no fails... and it responded within 124-197 ms for the request.

  • E.openFile pipe - Uncaught Error: Expecting a function to call, got Number
    in JavaScript •
    Avatar for Wilberforce

    Something appears to up with the pipe not ending as expected.

    https://github.com/espruino/Espruino/issues/1116

    I would be interesting if someone with an Espruino with an SD card could check this to see if the same issue exists.

  • RobotDyn D1 R2 ESP8266 - WiFi not working (AP and STA)
    in ESP8266 •
    Avatar for Wilberforce

    I think this is a hardware issue. Looking at your board, there is a socket for the wifi antenna to plug in - have you added an aerial?

  • E.openFile pipe - Uncaught Error: Expecting a function to call, got Number
    in JavaScript •
    Avatar for Wilberforce

    Sorry - I didn't have the latest...

    I see both now:
    Change name of socket close internal variable so it doesn't conflict with Pipe's close call
    Stop pipe from causing errors if fields of the requested names exist but aren't functions

    will merge and recheck.

  • E.openFile pipe - Uncaught Error: Expecting a function to call, got Number
    in JavaScript •
    Avatar for Wilberforce

    Thanks. I'll re-pull and check.

  • E.openFile pipe - Uncaught Error: Expecting a function to call, got Number
    in JavaScript •
    Avatar for Wilberforce

    Hi Gordon,
    Linux wasn't in the list of official boards - so I wasn't sure where to post. I'm happy to put it anywhere in the forum you want.

    I built the image since you did the patch for jumjum, and the error message above still occurs with the code above. I have no idea what is generating the error - it appears to be the return of the function call? I'm happy to look at it if you point me in the right direction.

  • E.openFile pipe - Uncaught Error: Expecting a function to call, got Number
    in JavaScript •
    Avatar for Wilberforce

    Raised here:

    https://github.com/espruino/Espruino/issues/1116#issuecomment-291659546

    Following the snippet from here:

    http://www.espruino.com/Internet#transferring-files

    Testing on linux ( which has a side issue of the path not working due to it not being at the root of an SD card)

    echo index file > /tmp/www/index.htm

    upload:

    function onPageRequest(req, res) {
  var a = url.parse(req.url, true);
  var f = E.openFile(a.pathname, "r");
  if (f !== undefined) {
    res.writeHead(200, {'Content-Type': 'text/plain'});
    f.pipe(res); // streams the file to the HTTP response
		debugger;
  } else {
    res.writeHead(404, {'Content-Type': 'text/plain'});
    res.end("404: Page "+a.pathname+" not found");
  }
}
require("http").createServer(onPageRequest).listen(8080);

    And in browser:

    http://192.168.69.16:8080/tmp/www/index.htm

    at the debug point in the browser, when you hit c to continue we get:

    Uncaught Error: Expecting a function to call, got Number

    This does not occur for the not found case..

    Not sure what is causing this error or if the example needs to be updated?

  • Command line Espruino upload over WiFi - ESP8266
    in ESP8266 •
    Avatar for Wilberforce

    The connect over tcp is using the telnet port 23 - so you could use anything that sends over telnet to send to the board.

    It doesn't look like the Npm module supports this - only serial and ble.

    It could be modified to open a tcp socket on port 23 and send and receive on that...

  • compare event based handling of post-request with piping
    in JavaScript •
    Avatar for Wilberforce 
    
/*
Proof of concept fs upload file ESP32 / Linux
(c) 2017 Wilberforce

*/

function post_file(req,res){
  console.log("post_file",req.url);
  var f = E.openFile(req.url,"w");
  req.pipe(f,{chunkSize:512, end:false,
              complete:function(){
                console.log("Complete");
                f.close();
                res.end("pipe upload done");
              }
             });
  res.end();
}


var html_index=`
<html>
<head>
<title>Uploader</title>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.4/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/js/bootstrap.min.js"></script>
<link href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>

<form action="" method="post">
    <input type="file" name="user_file" />
    <button type="submit">Submit</button>
</form>

<script>
var ajaxFileUpload = function (filename,data) {
    var xhr = new XMLHttpRequest();
    xhr.open("PUT", "http://192.168.15.18:88/node_modules/"+filename, true);
    xhr.addEventListener("load", function (e) {
        // file upload is complete
        console.log(xhr.responseText);
    });
    //xhr.send(data);
 xhr.send(data);
};

var form = document.querySelector("form");
//debugger;
form.addEventListener("submit", function (e) {

//debugger;
var input = document.querySelector('input[type="file"]');
var fdata = new FormData();
var file;

    file = input.files[0];
    //fdata.append(file.name, file);

//var file = $('#load-file')[0].files[0];
//debugger;
  var fileReader = new FileReader();
  fileReader.onloadend = function (e) {
    var arrayBuffer = e.target.result;
    var fileType = $('#file-type').val();

  //debugger;
  ajaxFileUpload(file.name,arrayBuffer);

  };
  fileReader.readAsArrayBuffer(file);

    // Prevents the standard submit event
    e.preventDefault();
    return false;
}, false);
</script>

</html>
`

function page_index(req,res) {
  res.writeHead(200);
  res.end(html_index);
  return 200;
}

var http = require("http");
  http.createServer(function (req, res) {
    console.log({header:req.header});
    console.log({method:req.method});
    console.log({url:req.url});
    code=404;
    if(req.url=='/' && req.method == 'GET') code=page_index(req,res);
    
    if(req.url=='/post' && req.method == 'POST') code=post_file(req,res);
    if(req.url=='/put' || req.method == 'PUT') code=post_file(req,res);
    if ( code == 404 ) {
      res.writeHead(404);
      res.end('Not Found');
    }
  }).listen(88); 
// Not found

fs=require("fs");
if ( typeof(fs.readdirSync())==="undefined" ) {
  console.log("Formatting FS");
  E.flashFatFS({format:true});
}
console.log(fs.readdirSync());
console.log(fs.readdirSync('node_modules'));

  • compare event based handling of post-request with piping
    in JavaScript •
    Avatar for Wilberforce

    Thanks Gordon. Decoding the post boundarys is quite difficult so I decided to do it the easy way - put the file content as the body and just stream that up.

    So this lets the browser do all the hard work instead... It allows you to select a file and upload it using the PUT method... insteading pasting the file contents. It should allow binary files too.

    Next steps are to clean up the look, and allow folder creation and folder selection.....

  • compare event based handling of post-request with piping
    in JavaScript •
    Avatar for Wilberforce

    I'm looking at using the file upload input element with the multi-part encoding, so that files can be uploaded including binary files.

    Can you think of a cunning way of decoding the multi-part message?

  • compare event based handling of post-request with piping
    in JavaScript •
    Avatar for Wilberforce

    Thanks

  • compare event based handling of post-request with piping
    in JavaScript •
    Avatar for Wilberforce

    @gordon any chance you could post your code - I would like to see where you put the end handler.

  • Logging to Google Sheets
    in ESP8266 •
    Avatar for Wilberforce

    Sorry - the esp8266 does not support https:// . The TLS library has not been compiled into the firmware, as the secure protocol needs more ram buffer space than the 8266 has...

    It does work on a espruino wifi or the esp32.

  • Logging to Google Sheets
    in ESP8266 •
    Avatar for Wilberforce

    Did you modify the connection set up?

    This example works on the esp32, you might have enough space in the esp8266...

    It assumes you have a wifi connected, and wifi.save() already done so that there is a connnection:

    https://github.com/espruino/Espruino/blob/master/targets/esp32/tests/https-google-sheets.js

  • compare event based handling of post-request with piping
    in JavaScript •
    Avatar for Wilberforce

    @JumJum
    The best thing to do is to use the window 10 64 bit bash on windows. I'm using this for development.
    Install Bash on Ubuntu on Windows 10 https://msdn.microsoft.com/da-dk/commandline/wsl/install_guide

    git clone  --recursive  git://github.com/espruino/EspruinoBuildTools.git
cd EspruinoBuildTools/esp32/build/Espruino

source scripts/provision.sh LINUX
make clean && make
./espruino

  • Pin in JSON ?
    in JavaScript •
    Avatar for Wilberforce

    Is this because C5 has special meaning? Would it work with an int or string?

  • ESP32 - Onewire library
    in ESP32 •
    Avatar for Wilberforce

    If your join the esp32 to wifi, you can then enter it's pi address in
    settings->communications, and then connect to it via wifi.

    Upload of code is much faster too!

  • NodeMCU Wifi Module not found
    in ESP8266 •
    Avatar for Wilberforce

    Instead of using the nodejs - your are better off using the web ide. Install that in chrome and set the board rate to 115200 and use that to programme.

  • Restart to use Web IDE after Flash of ESP8266-01
    in ESP8266 •
    Avatar for Wilberforce

    Are you sure they're not still running in the background in some form?

    No - the serial port gets locked - you can't flash with a current ide connection. And the esptool.py script is closed before attempting to reconnect in the ide.

    Can you please explain what this means:
    ERROR: RECEIVE ERROR: {"connectionId":2,"error":"overrun"}

  • ESP32 - Onewire library
    in ESP32 •
    Avatar for Wilberforce

    I've downloaded the firmware above and flashed with that:

    process.env
={
  "VERSION": "1v91.374",
  "BUILD_DATE": "Mar  4 2017",
  "BUILD_TIME": "13:37:12",
  "GIT_COMMIT": "5e9489ee5936f24d2684588ff42393b76105cb23",
  "BOARD": "ESP32",
  "CHIP": "ESP32",
  "CHIP_FAMILY": "ESP32",
  "FLASH": 0, "RAM": 524288,
  "SERIAL": "240ac400-2f90",
  "CONSOLE": "Serial1",
  "EXPORTS": { "jsvLock": 1074761212, "jsvLockAgainSafe": 1075125944, "jsvUnLock": 1074763152, "jsvSkipName": 1074778216,
    "jsvMathsOp": 1074787824, "jsvMathsOpSkipNames": 1074791308, "jsvNewFromFloat": 1074773388, "jsvNewFromInteger": 1074773300, "jsvNewFromString": 1074772312,
    "jsvNewFromBool": 1074773360, "jsvGetFloat": 1074782172, "jsvGetInteger": 1074776600, "jsvGetBool": 1074782920, "jspeiFindInScopes": 1074800584,
    "jspReplaceWith": 1074800352, "jspeFunctionCall": 1074809836, "jspGetNamedVariable": 1074802216, "jspGetNamedField": 1074802600, "jspGetVarNamedField": 1074802708,
    "jsvNewWithFlags": 1074772040 }
 }

    Using:

    var p;
if ( process.env.CHIP_FAMILY == 'ESP8266' ) p=NodeMCU.D4;
else p = D23;
var ow = new OneWire(p);
ow.reset();
var d=require("DS18B20");
var sensor = d.connect(ow);
console.log(sensor.getTemp());
console.log(sensor.getTemp());
console.log(ow.search());

    I have two sensors connected and see:

     _____                 _
|   __|___ ___ ___ _ _|_|___ ___
|   __|_ -| . |  _| | | |   | . |
|_____|___|  _|_| |___|_|_|_|___|
          |_| http://espruino.com
 1v91.374 Copyright 2016 G.Williams
Espruino is Open Source. Our work is supported
only by sales of official boards and donations:
http://espruino.com/Donate
>24.9375
24.9375
[
  "28cc2e230500006b",
  "283260dc04000001"
 ]
=undefined
>

  • Restart to use Web IDE after Flash of ESP8266-01
    in ESP8266 •
    Avatar for Wilberforce

    I'm getting this after flashing an ESP32:

    >>> Disconnected
>>> Connecting...
Set Slow Write = true
[object Object]
Connected [object Object]
ERROR: RECEIVE ERROR: {"connectionId":2,"error":"overrun"}
Disconnect callback...
WARNING: [notify_warn] Disconnected
>>> Disconnected
ERROR: executeExpression called when not connected!
>>> Connecting...
Set Slow Write = true
[object Object]
Connected [object Object]
Found a prompt... great!
>>> Sending...
---> "\u0010console.log(\"<\",\"<<\",JSON.stringify(process.env),\">>\",\">\")\n"
>>> Sent
ERROR: RECEIVE ERROR: {"connectionId":3,"error":"overrun"}
Disconnect callback...
WARNING: [notify_warn] Disconnected
>>> Disconnected
WARNING: No result found - just got ""
Device found (connectionId=3)
[success] Connected to port COM3
>>> Connected to port COM3

    If from the ide If I attempt disconnect/connect a few times, and then hit reset on the board, it finally connects.

  • Captive Portal?
    in General •
    Avatar for Wilberforce

    There is some code in progress to add UDP, so in the future yes.

    https://github.com/espruino/Espruino/issues/1062

    By default when the ESP8266 is running STA (station mode), a DNS server is started, so I believe this would also need to be stopped - an option would need to be added

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