How to send a large amount of data faster ?

[espruino-discuss]

Posted at 2018-01-20 by Polypod

Hi all,
I am working on a webserver using espruino and the esp8266, to store sensor data in the flash, and serve it to a web browser. But the network seems very slow, e.g. about 1kb per second, depending on the size of each write, much slower than when using Arduino. In this example, it takes 15second to serve 20kb :

function onPageRequest(req, res) {
  res.writeHead(200, {'Content-Type': 'text/plain'});
  var n = 4, chk=5*1024, t=getTime();
  res.on('drain',function() {
    if (n==0) res.end();
    else {  
          res.write(E.toString(new Uint8Array(chk)));  
         n--;  }
 
    print("t:",(getTime()-t).toFixed(3),"sec");
  });
 
}
require('http').createServer(onPageRequest).listen(8080);

 _____                 _
|   __|___ ___ ___ _ _|_|___ ___
|   __|_ -| . |  _| | | |   | . |
|_____|___|  _|_| |___|_|_|_|___|
          |_| http://espruino.com
 1v95.23 Copyright 2017 G.Williams
Espruino is Open Source. Our work is supported
only by sales of official boards and donations:
http://espruino.com/Donate
Flash map 4MB:512/512, manuf 0xef chip 0x4016
>
=undefined
t: 0.021 sec
t: 5.057 sec
t: 9.288 sec
t: 13.494 sec
t: 17.717 sec
>

I tried with Arduino, it was 100x faster, and served 1.5Mb in the same 15 seconds. So it cannot be a hardware limitation. Is there a workaround or another way to send data faster with espruino ?

[espruino-discuss]

Posted at 2018-01-21 by @allObjects

...no surprise to me... Arduino leaves the ESP8266 alone to do just its (Wifi) work... running now the serving and everything on ESP8266 - and in JS - ... it could be a buffer size issue (in general and in particular in comm w/ Espruino and ESP8266 Wifi firmware... RAM is after all limited... now it does not only serve the Wifi send and receive, but all Espruino. --- I amy be totally mistaken, though...

---

Posted at 2018-01-21 by Polypod

You mean there is no work around or better way to send faster on espruino ?

To download its usable 3 mb of data, it would take ... 50 minutes. :(

---

Posted at 2018-01-22 by Wilberforce

The drain event might not send until a buffer is full...

What happens if you send all of the sequence in one go?

---

Posted at 2018-01-22 by Polypod

Is it possible to flush this buffer to be sent immediately somehow ? or get called until the buffer is really full ?
As if it is making an unnecessary break before each send. If I reduce the chunk size from 5kb to 256bytes, the average speed is dramatically decreased.

I can't send 20kb in one go, I get "New interpreter error: LOW_MEMORY,MEMORY". If I send only 1 chunk of 5bk, it still takes 5 seconds even straight away without ondrain:

function onPageRequest(req, res) {
  res.writeHead(200, {'Content-Type': 'text/plain'});
  var n = 1, chk=5*1024, t=getTime();
  res.write(E.toString(new Uint8Array(chk))); 
  res.end();
}
require('http').createServer(onPageRequest).listen(8080);

It actually seems hanging few seconds before sending anything.

---

Posted at 2018-01-22 by ClearMemory041063

I'm trying to visualize your hardware setup.

1. Esp8266 with Espruino flashed into the Esp8266
2. Esp8266 connected via serial port to a Pico, Espruino board or Arudino.

The first case would be slower because the uP has to handle more tasks (marshall data to send, and send data)
The second cases have more than one uP to divide up the tasks.

---

Posted at 2018-01-22 by Polypod

I am in the first case: Esp8266 with Espruino flashed into the Esp8266. By marshalling data, I assume you refer to the E.toString. It's not much different without marshalling. The loop finish in only 13ms with a straight string (instead of 26ms for uint8array), but the 5kb of data still make 5 seconds to finish loading in the browser, in at least ten pieces :

var data="";
var chk=1024;
for(var i=0;i<chk;i++) data+="0";

function onPageRequest(req, res) {
  res.writeHead(200, {'Content-Type': 'text/plain'});
  var n= 5, t=getTime();
  for(var i=0;i<n;i++) {
    res.write(data,'binary'); 
    print("t:",(getTime()-t).toFixed(3),"sec");
  }
  res.end();
}
require('http').createServer(onPageRequest).listen(8080);

 _____                 _
|   __|___ ___ ___ _ _|_|___ ___
|   __|_ -| . |  _| | | |   | . |
|_____|___|  _|_| |___|_|_|_|___|
          |_| http://espruino.com
 1v95.23 Copyright 2017 G.Williams
Espruino is Open Source. Our work is supported
only by sales of official boards and donations:
http://espruino.com/Donate
Flash map 4MB:512/512, manuf 0xef chip 0x4016
>
=undefined
t: 0.002 sec
t: 0.005 sec
t: 0.008 sec
t: 0.010 sec
t: 0.013 sec
t: 0.002 sec
t: 0.005 sec
t: 0.008 sec
t: 0.010 sec
t: 0.013 sec

---

Posted at 2018-01-22 by ClearMemory041063

We you test it using Arduino, is the Arduino flashed onto the Esp8266?

---

Posted at 2018-01-22 by Polypod

@ClearMemory041063, not sure I understand correctly, yes I tested with an arduino program flashed on the esp8266. With arduino, I believe there is no other way than to flash my program in there.

---

Posted at 2018-01-22 by ClearMemory041063

Please post the Arduino code for comparison.

Here is another approach:

Try moving the new UintArray(chk) to a Global scope

//Global scope
var n = 4, chk=5*1024;
var tdata=new Uint8Array(chk);

function onPageRequest(req, res) {
  res.writeHead(200, {'Content-Type': 'text/plain'});
  var t=getTime();
  res.on('drain',function() {
  print("n=",n,"t:",(getTime()-t).toFixed(3),"sec");
  if (n===0){ res.end();
   print("n=",n,"t:",(getTime()-t).toFixed(3),"sec");
  }else {  
   res.write(E.toString(tdata));  
    n--;
   }//end else
  });//end opr
 }//end function

IP=  192.168.1.9
null
Wi-Fi Connected
n= 4 t: 0.008 sec
n= 3 t: 1.097 sec
n= 2 t: 2.214 sec
n= 1 t: 3.447 sec

---

Posted at 2018-01-22 by ClearMemory041063

Try moving some data to see how much is being moved

var n = 4, chk=5*1024;
var tdata=new Uint8Array(chk);
var i;
for(i=0;i<1024;i++){
  tdata[i]=0x30;
  tdata[i+1024]=0x31;
  tdata[i+1024*2]=0x32;
  tdata[i+1024*3]=0x33;
  tdata[i+1024*4]=0x34;
}//next i

function onPageRequest(req, res) {
  res.writeHead(200, {'Content-Type': 'text/plain'});
  var t=getTime();
  res.on('drain',function() {
  print("n=",n,"t:",(getTime()-t).toFixed(3),"sec");
  if (n===0){ res.end();
   print("n=",n,"t:",(getTime()-t).toFixed(3),"sec");
  }else {  
   res.write(E.toString(tdata));  
    n--;
   }//end else
  });//end opr
 }//end function

IP=  192.168.1.9
null
Wi-Fi Connected
n= 4 t: 0.008 sec
n= 3 t: 1.092 sec
n= 2 t: 2.859 sec
n= 1 t: 4.056 sec
n= 0 t: 5.809 sec
n= 0 t: 5.811 sec
n= 0 t: 0.008 sec
n= 0 t: 0.009 sec

Saved the page as test.txt and it contains 20 kB of data.

---

Attachments:

• test.txt

---

Posted at 2018-01-23 by Polypod

@ClearMemory041063, I am surprised it goes a bit faster on your setup. I still got 17 sec for the 20kb, when I tried the two programs you posted. I tried with/out AP/station, no change. What version of espruino are you running ?
The only change I did was 54kb chunk, instead of 45kb chunks, as the latter stopped after n=3 (I guess a memory shortage).

var n = 5, chk=4*1024;
var tdata=new Uint8Array(chk);
var i;
for(i=0;i<1024;i++){
  tdata[i]=0x30;
  tdata[i+1024]=0x31;
  tdata[i+1024*2]=0x32;
  tdata[i+1024*3]=0x33;
//  tdata[i+1024*4]=0x34;
}//next i
function onPageRequest(req, res) {
  res.writeHead(200, {'Content-Type': 'text/plain'});
  var t=getTime();
  n=5;
  res.on('drain',function() {
      print("n=",n,"t:",(getTime()-t).toFixed(3),"sec");
      if (n===0){ 
        res.end();
        print("n=",n,"t:",(getTime()-t).toFixed(3),"sec");
      }else {  
        res.write(E.toString(tdata));  
        n--;
   }//end else
  });//end opr
 }//end function
require('http').createServer(onPageRequest).listen(80);

 _____                 _
|   __|___ ___ ___ _ _|_|___ ___
|   __|_ -| . |  _| | | |   | . |
|_____|___|  _|_| |___|_|_|_|___|
          |_| http://espruino.com
 1v95.23 Copyright 2017 G.Williams
Espruino is Open Source. Our work is supported
only by sales of official boards and donations:
http://espruino.com/Donate
Flash map 4MB:512/512, manuf 0xef chip 0x4016
>
=undefined
n= 5 t: 0.004 sec
n= 4 t: 4.339 sec
n= 3 t: 7.640 sec
n= 2 t: 10.941 sec
n= 1 t: 14.263 sec
n= 0 t: 17.558 sec
n= 0 t: 17.559 sec

var n = 5, chk=4*1024;
var tdata=new Uint8Array(chk);
function onPageRequest(req, res) {
  res.writeHead(200, {'Content-Type': 'text/plain'});
  var t=getTime();
  res.on('drain',function() {
  print("n=",n,"t:",(getTime()-t).toFixed(3),"sec");
  if (n===0){ res.end();
   print("n=",n,"t:",(getTime()-t).toFixed(3),"sec");
  }else {  
   res.write(E.toString(tdata));  
    n--;
   }//end else
  });//end opr
 }//end function

require('http').createServer(onPageRequest).listen(80);

 _____                 _
|   __|___ ___ ___ _ _|_|___ ___
|   __|_ -| . |  _| | | |   | . |
|_____|___|  _|_| |___|_|_|_|___|
          |_| http://espruino.com
 1v95.23 Copyright 2017 G.Williams
Espruino is Open Source. Our work is supported
only by sales of official boards and donations:
http://espruino.com/Donate
Flash map 4MB:512/512, manuf 0xef chip 0x4016
>
=undefined
n= 5 t: 0.003 sec
n= 4 t: 3.330 sec
n= 3 t: 6.626 sec
n= 2 t: 9.945 sec
n= 1 t: 13.246 sec
n= 0 t: 16.599 sec
n= 0 t: 16.601 sec

---

Posted at 2018-01-23 by Polypod

The arduino code I used is from this tutorial : https://www.hackster.io/rayburne/nodemcu-esp8266-remote-temperature-using-websockets-5956c4
The code make a webserver serving files on the flash with spiffs, I just added a 1mb file, and I get it in less than 13 seconds, I just tried again.

---

Posted at 2018-01-23 by ClearMemory041063

Problem identified

the res.on('drain') is slow to trigger.
Hypothesis Somewhere in the firmware is a setInterval that is used to test if the drain buffer is empty. Without delving into the source code, there seems to be an issue with the frequency that the drain empty condition is tested and an emit to the ondrain is issued.
The Aruduino code runs faster because the drain empty condition is recognised immediately

The following code was executed on a Pico connected via serial port to an Esp8266 at 115 Kbaud. It uses a setTimeout function to issue emit commands at a higher rate. It doesn't test for the amount of data in the drain buffer and thus is an incomplete fix.

var n = 4, chk=5*1024;
var tdata=new Uint8Array(chk);
var i;
for(i=0;i<1024;i++){
  tdata[i]=0x30;
  tdata[i+1024]=0x31;
  tdata[i+1024*2]=0x32;
  tdata[i+1024*3]=0x33;
  tdata[i+1024*4]=0x34;
}//next i

function onPageRequest(req, res) {
 res.writeHead(200, {'Content-Type': 'text/plain'});
 var t=getTime();
 res.on('drain',function() {
  print("n=",n,"t:",(getTime()-t).toFixed(3),"sec");
  if (n===0){ res.end();
   print("n=",n,"t:",(getTime()-t).toFixed(3),"sec");
  }else {  
   res.write(E.toString(tdata));  
    n--;
   setTimeout(function () {
//    console.log("Hello World");
    res.emit('drain');
   }, 400);
    }//end else
  });//end opr
 }//end function

1v95 Copyright 2017 G.Williams
>2
Start connection process
end require
=undefined
Reset the ESP8266
end reset
Test for error
Try Connecting to WiFi  faux
end connect
Test for error
Test for error
Test for error
null
end getIP
IP=  192.168.1.9
null
Wi-Fi Connected
n= 4 t: 0.008 sec
n= 3 t: 0.443 sec
n= 2 t: 0.883 sec
n= 1 t: 1.305 sec
n= 0 t: 1.742 sec
n= 0 t: 1.743 sec
n= 0 t: 0.008 sec
n= 0 t: 0.009 sec

@gfwilliams any comments on the hypothesis?

@Polypod please give it a try on your Esp8266 with flashed Espruino and see if you can get similar results.

I just saw your latest post about the Arduino using Websockets and not HTML. My limited experience with websockets left me with the impression that they are much faster than using HTML.

---

Posted at 2018-01-23 by @gfwilliams

I'd be very wary about comparing Espruino running on the ESP8266 and running on something else connected to an ESP8266 by AT commands.

drain is fired during HTTP handling when the send buffer is empty, not on a timeout: https://github.com/espruino/Espruino/blob/09412d6a02830abeee16f9582c8c4c7cf0ea4df9/libs/network/socketserver.c#L277

So it'll be very marginally faster if you keep the buffer full all the time.

I'd be pretty sure your issue is https://github.com/espruino/Espruino/blob/09412d6a02830abeee16f9582c8c4c7cf0ea4df9/libs/network/esp8266/network_esp8266.c#L763

the chunk size is 268 bytes, so it's only sending that amount each time - which probably results in a whole bunch of small TCP/IP packets being sent, rather than a few large ones.

Even so, 5 secs is particularly slow. You could take a look at req and res. In one of those there should be a field called dSnd which is the sent data buffer. You could check in an interval and see how quickly that's being emptied.

---

Posted at 2018-01-23 by Polypod

I hope we can raise this upload speed limit I am reaching.
@gfwilliams, it looks like the chunk size you mention 256 bytes every 200ms, that's where my ~1kb per second comes from.
@ClearMemory041063, I tried your code, but it runs after 2 steps in a "Execution Interrupted New interpreter error: LOW_MEMORY,MEMORY".
There is another strange thing, drain get called one more times after res.end() has been called.
Here's the code that looks into the dSnd, 12.5sec for 15ko :

var n = 5, chk=3*1024;
var tdata=new Uint8Array(chk);
var i;
for(i=0;i<1024;i++){
  tdata[i]=0x30;
  tdata[i+1024]=0x31;
  tdata[i+1024*2]=0x32;
//  tdata[i+1024*3]=0x33;
//  tdata[i+1024*4]=0x34;
}//next i
function onPageRequest(req, res) {
 res.writeHead(200, {'Content-Type': 'text/plain'});
 var t=getTime();
 res.on('drain',function() {
  print("n=", n,"t:",(getTime()-t).toFixed(3),"sec");
   if (n===0){ 
    res.end();
    clearInterval(inter);
   print("end n=",n,"t:",(getTime()-t).toFixed(3),"sec");
  } else {
   res.write(E.toString(tdata));  
    n--;
  }
   //end else
  });//end opr
  inter=setInterval(function () {
     console.log("--t:",(getTime()-t).toFixed(3),"res",res.dSnd.length);  
   }, 100);

 }//end function

require('http').createServer(onPageRequest).listen(80);

 _____                 _
|   __|___ ___ ___ _ _|_|___ ___
|   __|_ -| . |  _| | | |   | . |
|_____|___|  _|_| |___|_|_|_|___|
          |_| http://espruino.com
 1v95.23 Copyright 2017 G.Williams
Espruino is Open Source. Our work is supported
only by sales of official boards and donations:
http://espruino.com/Donate
Flash map 4MB:512/512, manuf 0xef chip 0x4016
>
=undefined
n= 5 t: 0.004 sec
--t: 0.103 res 3072
--t: 0.203 res 3072
--t: 0.303 res 2804
--t: 0.403 res 2804
--t: 0.503 res 2536
--t: 0.603 res 2536
--t: 0.703 res 2268
--t: 0.803 res 2268
--t: 0.903 res 2000
--t: 1.003 res 2000
--t: 1.103 res 1732
--t: 1.203 res 1732
--t: 1.303 res 1732
--t: 1.403 res 1464
--t: 1.503 res 1464
--t: 1.603 res 1196
--t: 1.703 res 1196
--t: 1.803 res 928
--t: 1.903 res 928
--t: 2.003 res 660
--t: 2.103 res 660
--t: 2.203 res 392
--t: 2.303 res 392
--t: 2.403 res 124
--t: 2.503 res 124
n= 4 t: 2.589 sec
--t: 2.603 res 3072
--t: 2.703 res 3072
--t: 2.803 res 3072
--t: 2.903 res 2804
--t: 3.003 res 2804
--t: 3.103 res 2536
--t: 3.203 res 2536
--t: 3.303 res 2268
--t: 3.403 res 2268
--t: 3.503 res 2000
--t: 3.603 res 2000
--t: 3.703 res 1732
--t: 3.803 res 1732
--t: 3.903 res 1464
--t: 4.003 res 1464
--t: 4.103 res 1196
--t: 4.203 res 1196
--t: 4.303 res 928
--t: 4.403 res 928
--t: 4.503 res 660
--t: 4.603 res 660
--t: 4.703 res 660
--t: 4.803 res 392
--t: 4.903 res 392
--t: 5.003 res 124
--t: 5.103 res 124
n= 3 t: 5.118 sec
--t: 5.203 res 3072
--t: 5.303 res 3072
--t: 5.403 res 2804
--t: 5.503 res 2804
--t: 5.603 res 2536
--t: 5.703 res 2536
--t: 5.803 res 2268
--t: 5.903 res 2268
--t: 6.003 res 2000
--t: 6.103 res 2000
--t: 6.203 res 1732
--t: 6.303 res 1732
--t: 6.403 res 1464
--t: 6.503 res 1464
--t: 6.603 res 1196
--t: 6.703 res 1196
--t: 6.803 res 928
--t: 6.903 res 928
--t: 7.003 res 660
--t: 7.103 res 660
--t: 7.203 res 660
--t: 7.303 res 392
--t: 7.403 res 392
--t: 7.503 res 124
--t: 7.602 res 124
n= 2 t: 7.619 sec
--t: 7.703 res 3072
--t: 7.803 res 3072
--t: 7.903 res 2804
--t: 8.003 res 2804
--t: 8.103 res 2536
--t: 8.203 res 2536
--t: 8.303 res 2268
--t: 8.403 res 2268
--t: 8.503 res 2000
--t: 8.603 res 2000
--t: 8.703 res 2000
--t: 8.803 res 1732
--t: 8.903 res 1732
--t: 9.003 res 1464
--t: 9.103 res 1464
--t: 9.203 res 1196
--t: 9.303 res 1196
--t: 9.403 res 928
--t: 9.503 res 928
--t: 9.603 res 660
--t: 9.703 res 660
--t: 9.803 res 392
--t: 9.903 res 392
--t: 10.003 res 124
--t: 10.103 res 124
n= 1 t: 10.176 sec
--t: 10.203 res 3072
--t: 10.303 res 3072
--t: 10.403 res 2804
--t: 10.503 res 2804
--t: 10.603 res 2804
--t: 10.703 res 2536
--t: 10.803 res 2536
--t: 10.903 res 2268
--t: 11.003 res 2268
--t: 11.103 res 2000
--t: 11.203 res 2000
--t: 11.303 res 1732
--t: 11.403 res 1732
--t: 11.503 res 1464
--t: 11.603 res 1464
--t: 11.703 res 1464
--t: 11.803 res 1196
--t: 11.903 res 1196
--t: 12.003 res 928
--t: 12.103 res 928
--t: 12.203 res 660
--t: 12.303 res 660
--t: 12.403 res 392
--t: 12.503 res 392
--t: 12.603 res 124
--t: 12.703 res 124
n= 0 t: 12.767 sec
end n= 0 t: 12.769 sec
n= 0 t: 0.004 sec
end n= 0 t: 0.006 sec


 

---

Posted at 2018-01-23 by ClearMemory041063

Try using websockets

Webserver method

Websockets

var n = 4, chk=5*1024;
var tdata=new Uint8Array(chk);
var i;
for(i=0;i<1024;i++){
  tdata[i]=0x30;
  tdata[i+1024]=0x31;
  tdata[i+1024*2]=0x32;
  tdata[i+1024*3]=0x33;
  tdata[i+1024*4]=0x34;
}//next i

var page = '<html><body><script>var ws;setTimeout(function(){';
page += 'ws = new WebSocket("ws://" + location.host + "/my_websocket", "protocolOne");';
page += 'ws.onmessage = function (event) { document.write("MSG:"+event.data); };';
page += 'setTimeout(function() { ws.send("Hello to Espruino!"); }, 1000);';
page += '},1000);</script></body></html>';

function onPageRequest(req, res) {
  res.writeHead(200, {'Content-Type': 'text/html'});
  res.end(page);
}
//////
function test(){
if(Hardware===1)Serial=Serial2;
if(Hardware===0)Serial=Serial4;

if(Hardware===1){
 digitalWrite(B9,1); // enable on Pico Shim V2
 Serial.setup(115200, { rx: A3, tx : A2 }); //Pico
}
if(Hardware===0)Serial.setup(115200, { rx: C11, tx : C10 }); 
//espruino board

console.log("Start connection process");
var wifi = require("ESP8266WiFi_0v25").connect(Serial, function(err) {
 if (err){Startagain=1;return;}
 console.log("Reset the ESP8266");
 wifi.reset(function(err) {
  if (err){Startagain=1;return;}
  console.log("Try Connecting to WiFi ",hotspots[hotspot].SSID);

  wifi.connect(hotspots[hotspot].SSID,hotspots[hotspot].key, function(err) {console.log(err);
   if (err){Startagain=1;return;
}

    wifi.getIP(function(l,ip){
     if (err){Startagain=1;return;}
     console.log("IP= ",ip,"\n\r"+l);
     console.log("Wi-Fi Connected");
     clearInterval( myinterval);

var server = require('ws').createServer(onPageRequest);
server.listen(8080);
server.on("websocket", function(ws) {
    ws.on('message',function(msg) { print("[WS] "+JSON.stringify(msg)); });
 var t=getTime();
  ws.send(E.toString(tdata));
  print("n=",n,"t:",(getTime()-t).toFixed(3),"sec");
});

  });//end getIP
  console.log("end getIP");
 });//end connect
 console.log("end connect");
});//end reset
 console.log("end reset");
});//end require
  console.log("end require");
}//end test

 1v95 Copyright 2017 G.Williams
>2
>Start connection process
end require
=undefined
Reset the ESP8266
end reset
Test for error
Try Connecting to WiFi  faux
end connect
Test for error
Test for error
Test for error
null
end getIP
IP=  192.168.1.9
null
Wi-Fi Connected
n= 4 t: 0.029 sec
[WS] "Hello to Espruino!"
> 

---

Posted at 2018-01-24 by Polypod

Thanks @ClearMemory041063 for giving attention to my problem, and for the codes to try. You are not testing them on an esp8266, are you ? The last code makes 11,5kb minified, it does not fit, it interrupt the transfer from the IDE. So I had to remove the connecting code and reduce the data to send to 3kb. I cannot send more at once without getting memory errors.

Unfortunately, at the end, the result with ws is as slow as with http: 2.5sec for 3kb (see the code below). Maybe because ws server is built on top of an http server.

var n = 5, chk=3*1024;
var tdata=new Uint8Array(chk);
var i;
for(i=0;i<1024;i++){
  tdata[i]=0x30;
  tdata[i+1024]=0x31;
//  tdata[i+1024*2]=0x32;
//  tdata[i+1024*3]=0x33;
//  tdata[i+1024*4]=0x34;
}//next i
 
var page = '<html><body><script>var ws;setTimeout(function(){';
page += 'ws = new WebSocket("ws://" + location.host + "/my_websocket", "protocolOne");';
page += 'var t=(new Date()).getTime();ws.onmessage = function (event) { console.log("t:",(new Date()).getTime()-t,"MSG:",event.data); };';
page += 'setTimeout(function() { ws.send("Hello to Espruino!"); }, 1000);';
page += '},1000);</script></body></html>';

function onPageRequest(req, res) {
  res.writeHead(200, {'Content-Type': 'text/html'});
  res.end(page);
}

var server = require('ws').createServer(onPageRequest);
server.listen(80);
server.on("websocket", function(ws) {
    ws.on('message',function(msg) { print("[WS] "+JSON.stringify(msg)); });
  var t=getTime();
  ws.send(E.toString(tdata));
  print("n=",n,"t:",(getTime()-t).toFixed(3),"sec");
  var inter=setInterval(function(){
    var l=ws.socket.dSnd.length;
    print("t",getTime()-t,"l",l);  
    if(l===0) clearInterval(inter);
  },100);
 //   ws.send("Hello from Espruino!");
});

 _____                 _
|   __|___ ___ ___ _ _|_|___ ___
|   __|_ -| . |  _| | | |   | . |
|_____|___|  _|_| |___|_|_|_|___|
          |_| http://espruino.com
 1v95.155 Copyright 2017 G.Williams
Espruino is Open Source. Our work is supported
only by sales of official boards and donations:
http://espruino.com/Donate
Flash map 4MB:512/512, manuf 0xef chip 0x4016
>
=undefined
n= 5 t: 0.018 sec
t 0.12109500000 l 2984
t 0.22103200000 l 2984
t 0.32097500000 l 2716
t 0.420522 l 2716
t 0.52113300000 l 2448
t 0.62102500000 l 2448
t 0.72063500000 l 2180
t 0.82108700000 l 2180
t 0.921061 l 1912
[WS] "Hello to Espruino!"
t 1.020693 l 1644
t 1.12096200000 l 1644
t 1.22103700000 l 1376
t 1.32081700000 l 1376
t 1.42095800000 l 1108
t 1.52093400000 l 1108
t 1.62055600000 l 840
t 1.72074900000 l 840
t 1.82093100000 l 840
t 1.92100099999 l 572
t 2.020918 l 572
t 2.12098700000 l 304
t 2.220733 l 304
t 2.320561 l 36
t 2.42057400000 l 36
t 2.52083200000 l 0

---

Posted at 2018-01-24 by Wilberforce

Hi - i tried the code above on the linux version of espruino.

In the browser - I get an empty page, and only one line of output in the console:

 _____                 _
|   __|___ ___ ___ _ _|_|___ ___
|   __|_ -| . |  _| | | |   | . |
|_____|___|  _|_| |___|_|_|_|___|
          |_| http://espruino.com
 1v94.213 Copyright 2017 G.Williams
Espruino is Open Source. Our work is supported
only by sales of official boards and donations:
http://espruino.com/Donate
>
=undefined
n= 5 t: 0.001 sec
t 0.10073614120 l 0
[WS] "Hello to Espruino!"
> 

How are you getting mutiple lines output?

---

Posted at 2018-01-24 by Polypod

The other lines comes from the interval every 100ms looking and printing how long is the dSnd buffer, and I see it decreasing in my output. Strange that the interval does not seem to start at all in your setup.

---

Posted at 2018-01-25 by ClearMemory041063

Running on Sparkfun Thing -dev ESP8266 board

The HTML code splits data into lines in this one.

//WSDesp8266 24Jan2018

//http//192.168.1.6:8080
//ESP8266 with Espruino flashed


// list of Wifi and passwords
var SSID="xxxxxx";
var key="keykeykey";
var Startagain=0;
var myinterval;

var n =4, chk=2*1024;
var tdata=new Uint8Array(chk);
var i;
for(i=0;i<1024;i++){
  tdata[i]=0x30;
  tdata[i+1024]=0x31;
}//next i

var page = 
"<html>\r\n<body>\r\n<textarea id=\"demo\" rows=\"32\" cols=\"64\"></textarea>\r\n<script>\r\nvar ws;\r\nvar data=\"\";\r\n//setTimeout(function(){\r\nws = new WebSocket(\"ws://\" + location.host + \"/my_websocket\", \"protocolOne\");\r\nws.onmessage = function (event) { \r\ndata+=event.data;\r\ndocument.getElementById(\"demo\").innerHTML = data;\r\nws.send(\"Hello to Espruino!\"); \r\n };\r\n//setTimeout(function() { ws.send(\"Hello to Espruino!\"); }, //1000);}\r\n//,1000);\r\n\r\n</script></body>\r\n</html>\r\n"
;
function onPageRequest(req, res) {
  res.writeHead(200, {'Content-Type': 'text/html'});
  res.end(page);
}

function test(){

console.log("Start connection process");
var wifi = require("Wifi");
 console.log("Try Connecting to WiFi ",SSID);
 wifi.connect(SSID,{password:key}, function(err) {
  console.log(err);
   if (err){Startagain=1;return;
}
 console.log("connected? err=", err, "info=", wifi.getIP());
     console.log("Wi-Fi Connected");
     clearInterval( myinterval);
     var t=getTime();
var server = require('ws').createServer(onPageRequest);
server.listen(8080);
server.on("websocket", function(ws) {
    ws.on('message',function(msg) {
    n--;
  print("n=",n,"t:",(getTime()-t).toFixed(3),"sec");
      print("[WS] "+JSON.stringify(msg));
      if(n) ws.send(E.toString(tdata));
    });
  t=getTime();
  ws.send(E.toString(tdata));
  print("n=",n,"t:",(getTime()-t).toFixed(3),"sec");
});
 });//end connect
}//end test

myinterval=setInterval(function () {
  console.log("Test for error");
  if(Startagain){
   Startagain=0;
   test();
  }//end of Startagain
}, 2000);

test();

Sending 2 kbytes of data 4 times

 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
Flash map 512KB:256/256, manuf 0x1f chip 0x8401
>Start connection process
Try Connecting to WiFi  faux
=undefined
null
connected? err= null info= {
  "ip": "192.168.1.12",
  "netmask": "255.255.255.0",
  "gw": "192.168.1.1",
  "mac": "5c:cf:7f:8b:1b:99"
 }
Wi-Fi Connected
n= 4 t: 0.015 sec
n= 3 t: 0.118 sec
[WS] "Hello to Espruino!"
n= 2 t: 0.209 sec
[WS] "Hello to Espruino!"
n= 1 t: 0.327 sec
[WS] "Hello to Espruino!"
n= 0 t: 0.426 sec
[WS] "Hello to Espruino!"
> 

8192 bytes sent
0.426 - 0.015 = 0.411 seconds
8192 / 0.411 = 19,931.9 bytes per second
19931.9 * 8 = 159,454.9 bits per second

---

Posted at 2018-01-25 by Polypod

Hmm, that's interesting, it seems hardware related. Your Sparkfun Thing dev-board rocks with espruino !
I don't get your result, with both my poor nodemcus-e12 v3 with 1.95.0 not 4mb , and my v4 lolin with 1.95.20 4mb.
Where can I find this flash map 256/256 you used ? I'm still getting data as slow as before:

 _____                 _
|   __|___ ___ ___ _ _|_|___ ___
|   __|_ -| . |  _| | | |   | . |
|_____|___|  _|_| |___|_|_|_|___|
          |_| http://espruino.com
 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
Flash map 4MB:512/512, manuf 0xef chip 0x4016
>Start connection process
Try Connecting to WiFi  Gardening, cheaper than therapy
=undefined
Test for error
Test for error
Test for error
Test for error
Test for error
null
connected? err= null info= {
  "ip": "192.168.2.8",
  "netmask": "255.255.255.0",
  "gw": "192.168.2.1",
  "mac": "a0:20:a6:14:52:af"
 }
Wi-Fi Connected
n= 4 t: 0.015 sec
n= 3 t: 1.701 sec
[WS] "Hello to Espruino!"
n= 2 t: 3.207 sec
[WS] "Hello to Espruino!"
n= 1 t: 4.681 sec
[WS] "Hello to Espruino!"
n= 0 t: 6.207 sec
[WS] "Hello to Espruino!"

---

Posted at 2018-01-25 by ClearMemory041063

Sparkfun Thing

Sparkfun Thing

Flashing Software

I'm using a Windows 10 platform.
To get the Thing into programming mode, ground the 0 pin and plug it in.
I use Putty at 74,880 Baud to see th eBootloader message.

Info

ExpressIF flasher software

I'm not sure if it matters but I first installed the latest AT software on the thing.
The latest ExpressIF AT firmware

Latest Espruino Download

For the Thing I used the code in the "espruino_1v95_esp8266" folder
"C:\Users\jj\Documents\espruinoEsp8266Flash\espruino_1v95_esp8266"
"C:\Users\jj\Documents\espruinoEsp8266Flash\espruino_1v95_esp8266_4mb"

The ExpressIF flashing software uses a file named
"C:\Users\jj\Documents\esp8266flasher\FLASH_DOWNLOAD_TOOLS_v2.4_150924\FLASH_DOWNLOAD_TOOLS_v2.4_150924\tool_config.txt"

To configure the download.
For the Thing AT download
"C:\Users\jj\Documents\esp8266flasher\FLASH_DOWNLOAD_TOOLS_v2.4_150924\FLASH_DOWNLOAD_TOOLS_v2.4_150924\tool_configThingdev AT.txt"

path_data:
choosed:C:\Users\jj\Documents\ESP8266Update\ESP8266_NONOS_SDK-2.1.0\bin\boot_v1.2.bin;0x00000;
choosed:C:\Users\jj\Documents\ESP8266Update\ESP8266_NONOS_SDK-2.1.0\bin\at\512+512\user1.1024.new.2.bin;0x1000;
choosed:C:\Users\jj\Documents\ESP8266Update\ESP8266_NONOS_SDK-2.1.0\bin\esp_init_data_default.bin;0xfc000;
choosed:C:\Users\jj\Documents\ESP8266Update\ESP8266_NONOS_SDK-2.1.0\bin\blank.bin;0x7e000;
choosed:C:\Users\jj\Documents\ESP8266Update\ESP8266_NONOS_SDK-2.1.0\bin\blank.bin;0xfe000;
empty:;;
empty:;;
default_path:C:\Users\jj\Documents\ESP8266Update\ESP8266_NONOS_SDK-2.1.0\bin;

For the Thing Espruino download I used
"C:\Users\jj\Documents\esp8266flasher\FLASH_DOWNLOAD_TOOLS_v2.4_150924\FLASH_DOWNLOAD_TOOLS_v2.4_150924\tool_configThingEspruino.txt"

path_data:
choosed:C:\Users\jj\Documents\ESP8266Update\espruino_1v95_esp8266\boot_v1.6.bin;0x00000;
choosed:C:\Users\jj\Documents\ESP8266Update\espruino_1v95_esp8266\espruino_esp8266_user1.bin;0x1000;
choosed:C:\Users\jj\Documents\ESP8266Update\espruino_1v95_esp8266\esp_init_data_default.bin;0x3FC000;
choosed:C:\Users\jj\Documents\ESP8266Update\espruino_1v95_esp8266\blank.bin;0x3FE000;
empty:;;
empty:;;
empty:;;
default_path:C:\Users\jj\Documents\ESP8266Update\ESP8266_NONOS_SDK-2.1.0\bin;

---

Attachments:

• tool_configThingdev AT.txt
• tool_configThingEspruino.txt

---

Posted at 2018-01-25 by ClearMemory041063

Trying it with a different ESP8266 chip like the ones for a Pico shim

Flashed Espruino on to the ESP8266

Running the previous test progrem gives:

 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
Flash map 4MB:1024/1024, manuf 0xe0 chip 0x4014
>Start connection process
Try Connecting to WiFi  faux
=undefined
null
connected? err= null info= {
  "ip": "192.168.1.13",
  "netmask": "255.255.255.0",
  "gw": "192.168.1.1",
  "mac": "18:fe:34:cb:2c:23"
 }
Wi-Fi Connected
n= 4 t: 0.014 sec
n= 3 t: 0.082 sec
[WS] "Hello to Espruino!"
n= 2 t: 0.149 sec
[WS] "Hello to Espruino!"
n= 1 t: 0.231 sec
[WS] "Hello to Espruino!"
n= 0 t: 0.399 sec
[WS] "Hello to Espruino!"
> 

8192 / 0.231 = 35,463 bytes per second
35,463 * 8 = 283,705 bits per second

The tool_config.txt

path_data:
choosed:C:\Users\jj\Documents\ESP8266Update\espruino_1v95_esp8266\boot_v1.6.bin;0x00000;
choosed:C:\Users\jj\Documents\ESP8266Update\espruino_1v95_esp8266\espruino_esp8266_user1.bin;0x1000;
choosed:C:\Users\jj\Documents\ESP8266Update\espruino_1v95_esp8266\esp_init_data_default.bin;0x3FC000;
choosed:C:\Users\jj\Documents\ESP8266Update\espruino_1v95_esp8266\blank.bin;0x3FE000;
empty:;;
empty:;;
empty:;;
default_path:C:\Users\jj\Documents\ESP8266Update\ESP8266_NONOS_SDK-2.1.0\bin;

Crystal freq 26.2
SPI Speed 80M
SPI Mode QIO
Flash Size 32 Mbit-C1
Baudrate 115,200

---

Posted at 2018-01-28 by Polypod

So you're a lucky guy, it's working fast for you for 2 different esp8266 based boards..
I really don't understand what's wrong with my nodemcu-e12. I don't have any other esp8266 to try. I installed mine with the same files, but using esptool. If I install last espressif firmware before, it wont make a difference, it will be erased by esptool, right ?
I still get a slow download. Honestly, I don't know where to go from here.

python esptool.py --port COM20 --baud 115200 write_flash --flash_freq 80m --flash_mode qio --flash_size 32m 0x0000 boot_v1.6.bin 0x1000 espruino_esp8266_user1.bin 0x3FC000 esp_init_data_default.bin 0x3FE000 blank.bin

 _____                 _
|   __|___ ___ ___ _ _|_|___ ___
|   __|_ -| . |  _| | | |   | . |
|_____|___|  _|_| |___|_|_|_|___|
          |_| http://espruino.com
 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
Flash map 4MB:512/512, manuf 0xef chip 0x4016
>Start connection process
Try Connecting to WiFi  Gardening
=undefined
Test for error
Test for error
Test for error
Test for error
Test for error
null
connected? err= null info= {
  "ip": "192.168.2.5",
  "netmask": "255.255.255.0",
  "gw": "192.168.2.1",
  "mac": "2c:3a:e8:0e:9f:1c"
 }
Wi-Fi Connected
n= 4 t: 0.006 sec
n= 3 t: 0.869 sec
[WS] "Hello to Espruino!"
n= 2 t: 1.525 sec
[WS] "Hello to Espruino!"
n= 1 t: 2.197 sec
[WS] "Hello to Espruino!"
n= 0 t: 2.859 sec
[WS] "Hello to Espruino!"

---

Posted at 2018-01-28 by ClearMemory041063

Since you are using a NodeMCU the flashing map is described here:

FlashNodeMCU

I'm testing on a ESP8266-01 with 1MB of flash, I think the NodeMCU has 4MB.
The latest test program follows and allows for you to refresh the page to get multiple timings.
I've also change the HTML script to display data.length instead of data.
I've added process.memory() to fix a bug in E.toString() and asked for the bug to be examined in another post.

Once the page is online you might try from a command prompt ping IP address
example ping 192.168.1.13
This will give you an idea of the wifi speed and if there is a lot of traffic or errors occurring.

//WSDesp8266B 28Jan2018

//http//192.168.1.6:8080
//ESP8266 with Espruino flahed


// list of Wifi and passwords
var SSID="ssid";
var key="keykey";
var Startagain=0;
var myinterval;

var n =4, chk=2*1024;
var tdata=new Uint8Array(chk);
var i;
for(i=0;i<1024;i++){
  tdata[i]=0x30;
  tdata[i+1024]=0x31;
}//next i

var page = 
"<html>\r\n<body>\r\n<textarea id=\"demo\" rows=\"32\" cols=\"64\"></textarea>\r\n<script>\r\nvar ws;\r\nvar data=\"\";\r\n//setTimeout(function(){\r\nws = new WebSocket(\"ws://\" + location.host + \"/my_websocket\", \"protocolOne\");\r\nws.onmessage = function (event) { \r\ndata+=event.data;\r\ndocument.getElementById(\"demo\").innerHTML = data.length;\r\nws.send(\"Hello to Espruino!\"); \r\n };\r\n//setTimeout(function() { ws.send(\"Hello to Espruino!\"); }, //1000);}\r\n//,1000);\r\n\r\n</script></body>\r\n</html>\r\n"
;
function onPageRequest(req, res) {
  res.writeHead(200, {'Content-Type': 'text/html'});
  res.end(page);
}

function test(){

console.log("Start connection process");
var wifi = require("Wifi");
 console.log("Try Connecting to WiFi ",SSID);
 wifi.connect(SSID,{password:key}, function(err) {
  console.log(err);
   if (err){Startagain=1;return;
}
 console.log("connected? err=", err, "info=", wifi.getIP());
     console.log("Wi-Fi Connected");
     clearInterval( myinterval);
     var t=getTime();
var server = require('ws').createServer(onPageRequest);
server.listen(8080);
server.on("websocket", function(ws) {
    ws.on('message',function(msg) {
    n--;
  print("n=",n,"t:",(getTime()-t).toFixed(3),"sec");
      print("[WS] "+JSON.stringify(msg));
      if(n){
        ws.send(E.toString(tdata));
        process.memory();
      }else{
        process.memory();
        n=4;
      }//end else
    });
  t=getTime();
  ws.send(E.toString(tdata));
  process.memory();
  print("n=",n,"t:",(getTime()-t).toFixed(3),"sec");
});
 });//end connect
}//end test

myinterval=setInterval(function () {
  console.log("Test for error");
  if(Startagain){
   Startagain=0;
   test();
  }//end of Startagain
}, 2000);

test();

Here is some output:

 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
Flash map 1MB:512/512, manuf 0xe0 chip 0x4014
>Start connection process
Try Connecting to WiFi  faux
=undefined
Test for error
Test for error
null
connected? err= null info= {
  "ip": "192.168.1.13",
  "netmask": "255.255.255.0",
  "gw": "192.168.1.1",
  "mac": "18:fe:34:cb:2c:23"
 }
Wi-Fi Connected
n= 4 t: 0.016 sec
n= 3 t: 0.098 sec
[WS] "Hello to Espruino!"
n= 2 t: 0.169 sec
[WS] "Hello to Espruino!"
n= 1 t: 0.239 sec
[WS] "Hello to Espruino!"
n= 0 t: 0.309 sec
[WS] "Hello to Espruino!"
n= 4 t: 0.012 sec
n= 3 t: 0.083 sec
[WS] "Hello to Espruino!"
n= 2 t: 0.151 sec
[WS] "Hello to Espruino!"
n= 1 t: 0.881 sec
[WS] "Hello to Espruino!"
n= 0 t: 0.951 sec
[WS] "Hello to Espruino!"
n= 4 t: 0.012 sec
n= 3 t: 0.089 sec
[WS] "Hello to Espruino!"
n= 2 t: 0.164 sec
[WS] "Hello to Espruino!"
n= 1 t: 0.233 sec
[WS] "Hello to Espruino!"
n= 0 t: 0.307 sec
[WS] "Hello to Espruino!"
n= 4 t: 0.012 sec
n= 3 t: 0.089 sec
[WS] "Hello to Espruino!"
n= 2 t: 0.846 sec
[WS] "Hello to Espruino!"
n= 1 t: 0.909 sec
[WS] "Hello to Espruino!"
n= 0 t: 0.994 sec
[WS

Some variation in the speed
Here are some ping timings:

Microsoft Windows [Version 10.0.16299.192]
(c) 2017 Microsoft Corporation. All rights reserved.

C:\Users\jj>ping 192.168.1.13

Pinging 192.168.1.13 with 32 bytes of data:
Reply from 192.168.1.13: bytes=32 time=2ms TTL=128
Reply from 192.168.1.13: bytes=32 time=2ms TTL=128
Reply from 192.168.1.13: bytes=32 time=3ms TTL=128
Reply from 192.168.1.13: bytes=32 time=3ms TTL=128

Ping statistics for 192.168.1.13:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 2ms, Maximum = 3ms, Average = 2ms

C:\Users\jj>ping 192.168.1.13

Pinging 192.168.1.13 with 32 bytes of data:
Reply from 192.168.1.13: bytes=32 time=2ms TTL=128
Reply from 192.168.1.13: bytes=32 time=1ms TTL=128
Reply from 192.168.1.13: bytes=32 time=2ms TTL=128
Reply from 192.168.1.13: bytes=32 time=3ms TTL=128

Ping statistics for 192.168.1.13:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 1ms, Maximum = 3ms, Average = 2ms

---

Posted at 2018-01-28 by Wilberforce

What is your physical distance to the router? Is it possible the antenna on the board is damaged?

Try restarting your router.

Have you tried the arduino software recently? Perhaps the hardware is damaged?

---

Posted at 2018-01-28 by @MaBecker

What about powesave setting for Wifi, check with require('Wifi').getStatus().powersave, output should be "none".

---

Posted at 2018-01-30 by Polypod

@wilberforce, I started this conversation after seeing that on arduino my boards were doing ~100kb/sec, while on espruino it was only 1kb/sec, for server a file. In fact, I am using espruino since the v1.91, and all that time I thought it was a hardware limitation of esp8266. But it seems to me that the problem comes from the dSnd buffer sent slowly, every 200m, in small pieces of 256bytes.

As it works faster on arduino, the board is not defective. It works the same way on the 2 nodemcu-e12 v2 & v3 that I have. I restarted the router, and tried AP alone (at 20cm from my laptop), station alone and AP+ST, still the same damn result !

@MaBecker, I found it at ps-poll even though it was in AP+ST mode. No change when I set it to "none" using with Wifi.setConfig({powersave:"none"}).

@ClearMemory041063, I tried without improvement also flashing the last expressif firmware with the expressif flashing tool like you did, just in case. I used "esp_init_data_default_v05.bin", because there was no "esp_init_data_default.bin". I could not get it working without also changing addresses of this file and of "blank.bin" to 0x3fc000 and 0x37e000. I got a nice :

AT+GMR
AT version:1.4.0.0(May  5 2017 16:10:59)
SDK version:2.1.0(116b762)
compile time:May  5 2017 16:37:48
OK

Then I reflashed espruino, this time with expressif flashing tool. I used the files from this url. I used the addresses from your link and I tried with "blank .bin" at 0x3FE000 like I used to do, both works same way. Still as slow as before.

I tried other browsers too, older espruino versions (v1.91, v1.94). The strangest that no one else ever have or noticed this problem before.

 _____                 _
|   __|___ ___ ___ _ _|_|___ ___
|   __|_ -| . |  _| | | |   | . |
|_____|___|  _|_| |___|_|_|_|___|
          |_| http://espruino.com
 1v95.155 Copyright 2017 G.Williams
Espruino is Open Source. Our work is supported
only by sales of official boards and donations:
http://espruino.com/Donate
Flash map 4MB:1024/1024, manuf 0xef chip 0x4016
>Start connection process
Try Connecting to WiFi  Gardening, cheaper than therapy
=undefined
Test for error
Test for error
Test for error
null
connected? err= null info= {
  "ip": "192.168.2.6",
  "netmask": "255.255.255.0",
  "gw": "192.168.2.1",
  "mac": "2c:3a:e8:0e:9f:1c"
 }
Wi-Fi Connected
n= 4 t: 0.018 sec
n= 3 t: 1.711 sec
[WS] "Hello to Espruino!"
n= 2 t: 3.186 sec
[WS] "Hello to Espruino!"
n= 1 t: 4.691 sec
[WS] "Hello to Espruino!"
n= 0 t: 6.165 sec
[WS] "Hello to Espruino!"

---

Posted at 2018-01-31 by ClearMemory041063

Finaly got a 4MB ESP8266-12 (AI-Thinker ESP8266 MOD) assembled and working.

I used 10k pullup resistors on the reset, Enable and GPIO 0 pins and a 10k pulldown resistor on GPIO 15.
I used three batch files to run the ESPtool.py
I first copied the batch files to the folder:
"C:\Users\jj\Documents\espruinoEsp8266Flash\espruino_1v95_esp8266_4mb"
Run the batch files by clicking on them in file explorer after grounding GPIO 0 and resetting the chip.
Run ESPinfo.bat and get the following.

C:\Users\jj\Documents\espruinoEsp8266Flash\espruino_1v95_esp8266_4mb>set /p pport=Enter a Com port
Enter a Com port com3

C:\Users\jj\Documents\espruinoEsp8266Flash\espruino_1v95_esp8266_4mb>echo com3
com3

C:\Users\jj\Documents\espruinoEsp8266Flash\espruino_1v95_esp8266_4mb>pause
Press any key to continue . . .

C:\Users\jj\Documents\espruinoEsp8266Flash\espruino_1v95_esp8266_4mb>esptool.py --port com3 --baud 115200 --no-stub chip_id
esptool.py v2.2.1
Connecting....
Detecting chip type... ESP8266
Chip is ESP8266EX
Enabling default SPI flash mode...
Chip ID: 0x00134e51
Hard resetting...

C:\Users\jj\Documents\espruinoEsp8266Flash\espruino_1v95_esp8266_4mb>esptool.py --port com3 --baud 115200 --no-stub read_mac
esptool.py v2.2.1
Connecting...
Detecting chip type... ESP8266
Chip is ESP8266EX
Enabling default SPI flash mode...
MAC: 5c:cf:7f:13:4e:51
Hard resetting...

C:\Users\jj\Documents\espruinoEsp8266Flash\espruino_1v95_esp8266_4mb>esptool.py --port com3 --baud 115200 --no-stub flash_id
esptool.py v2.2.1
Connecting...
Detecting chip type... ESP8266
Chip is ESP8266EX
Enabling default SPI flash mode...
Manufacturer: e0
Device: 4016
Detected flash size: 4MB
Hard resetting...

C:\Users\jj\Documents\espruinoEsp8266Flash\espruino_1v95_esp8266_4mb>pause
Press any key to continue . . .

Then I did a reset of the chip and ran EraseFlash.bat.
Then I did a reset of the chip and ran
"C:\Users\jj\Documents\espruinoEsp8266Flash\espruino_1v95_esp8266_4mb\FlashESP8266_4M_40mhz.bat"
I un-grounded GPIO 0 and reset the chip.
Reconnect to WEBIDE and try the test program WSDesp8266C.js
It connects to my router and serves the HTML page but fails to transmit data via WebSockets.

Try again

Put the batch files into the following folder
"C:\Users\jj\Documents\espruinoEsp8266Flash\espruino_1v95_esp8266"
Rerun the ESPinfo.bat, EraseFlash.bat and FlashESP8266_4M_40mhz.bat.
The WSDesp8266C.js program produces the following output:

 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
Flash map 4MB:512/512, manuf 0xe0 chip 0x4016
>Start connection process
Try Connecting to WiFi  faux
=undefined
Test for error
null
connected? err= null info= {
  "ip": "192.168.1.15",
  "netmask": "255.255.255.0",
  "gw": "192.168.1.1",
  "mac": "5c:cf:7f:13:4e:51"
 }
Wi-Fi Connected
n= 4 t: 0.018 sec
n= 3 t: 0.095 sec
[WS] "2048"
n= 2 t: 0.179 sec
[WS] "4096"
n= 1 t: 0.256 sec
[WS] "6144"
n= 0 t: 1.133 sec
[WS] "8192"
n= 0 t: 1.135 sec
n= 3 t: 1.241 sec
[WS] "10240"
n= 2 t: 1.312 sec
[WS] "12288"
n= 1 t: 1.383 sec
[WS] "14336"
n= 0 t: 1.453 sec
[WS] "16384"
n= 0 t: 1.455 sec
n= 3 t: 1.527 sec
[WS] "18432"
n= 2 t: 2.325 sec
[WS] "20480"
n= 1 t: 2.394 sec
[WS] "22528"
n= 0 t: 2.470 sec
[WS] "24576"
n= 0 t: 2.473 sec
n= 3 t: 2.541 sec
[WS] "26624"
n= 2 t: 2.617 sec
[WS] "28672"
n= 1 t: 2.685 sec
[WS] "30720"
n= 0 t: 2.757 sec
[WS] "32768"
n= 0 t: 2.759 sec
n= 3 t: 2.839 sec
[WS] "34816"
n= 2 t: 2.940 sec
[WS] "36864"
n= 1 t: 3.013 sec
[WS] "38912"
n= 0 t: 3.089 sec
[WS] "40960"
n= 0 t: 3.092 sec
n= 3 t: 3.168 sec
[WS] "43008"
n= 2 t: 3.243 sec
[WS] "45056"
n= 1 t: 3.317 sec
[WS] "47104"
n= 0 t: 3.388 sec
[WS] "49152"
n= 0 t: 3.391 sec
n= 3 t: 3.457 sec
[WS] "51200"
n= 2 t: 3.526 sec
[WS] "53248"
n= 1 t: 4.493 sec
[WS] "55296"
n= 0 t: 4.567 sec
[WS] "57344"
n= 0 t: 4.569 sec
n= 3 t: 4.646 sec
[WS] "59392"
n= 2 t: 4.715 sec
[WS] "61440"
n= 1 t: 4.780 sec
[WS] "63488"
n= 0 t: 4.853 sec
[WS] "65536"
n= 0 t: 4.855 sec
n= 3 t: 4.932 sec
[WS] "67584"
n= 2 t: 4.998 sec
[WS] "69632"
n= 1 t: 5.075 sec
[WS] "71680"
n= 0 t: 5.146 sec
[WS] "73728"
n= 0 t: 5.148 sec
n= 3 t: 5.221 sec
[WS] "75776"
n= 2 t: 5.294 sec
[WS] "77824"
n= 1 t: 5.366 sec
[WS] "79872"
n= 0 t: 5.432 sec
[WS] "81920"
n= 0 t: 5.434 sec
n= 3 t: 5.499 sec
[WS] "83968"
n= 2 t: 6.244 sec
[WS] "86016"
n= 1 t: 6.310 sec
[WS] "88064"
n= 0 t: 6.389 sec
[WS] "90112"
n= 0 t: 6.391 sec
n= 3 t: 6.459 sec
[WS] "92160"
n= 2 t: 6.528 sec
[WS] "94208"
n= 1 t: 6.597 sec
[WS] "96256"
n= 0 t: 6.668 sec
[WS] "98304"
n= 0 t: 6.669 sec
n= 3 t: 6.739 sec
[WS] "100352"
n= 2 t: 6.810 sec
[WS] "102400"
n= 1 t: 7.732 sec
[WS] "104448"
n= 0 t: 7.800 sec
[WS] "106496"
n= 0 t: 7.802 sec
n= 3 t: 7.872 sec
[WS] "108544"
n= 2 t: 7.944 sec
[WS] "110592"
n= 1 t: 8.013 sec
[WS] "112640"
n= 0 t: 8.083 sec
[WS] "114688"
n= 0 t: 8.085 sec
n= 3 t: 8.155 sec
[WS] "116736"
n= 2 t: 8.233 sec
[WS] "118784"
n= 1 t: 8.299 sec
[WS] "120832"
n= 0 t: 8.367 sec
[WS] "122880"
n= 0 t: 8.369 sec
n= 3 t: 8.446 sec
[WS] "124928"
n= 2 t: 8.513 sec
[WS] "126976"
n= 1 t: 8.587 sec
[WS] "129024"
n= 0 t: 8.659 sec
[WS] "131072"
n= 0 t: 8.662 sec
n= 3 t: 8.730 sec
[WS] "133120"
n= 2 t: 8.797 sec
[WS] "135168"
n= 1 t: 8.871 sec
[WS] "137216"
n= 0 t: 8.939 sec
[WS] "139264"
n= 0 t: 8.941 sec
n= 3 t: 9.012 sec
[WS] "141312"
n= 2 t: 9.079 sec
[WS] "143360"
n= 1 t: 9.152 sec
[WS] "145408"
n= 0 t: 9.221 sec
[WS] "147456"
n= 0 t: 9.224 sec
n= 3 t: 9.290 sec
[WS] "149504"
n= 2 t: 9.363 sec
[WS] "151552"
n= 1 t: 9.434 sec
[WS] "153600"
n= 0 t: 12.071 sec
[WS] "155648"
n= 0 t: 12.073 sec
n= 3 t: 12.153 sec
[WS] "157696"
n= 2 t: 12.229 sec
[WS] "159744"
n= 1 t: 12.302 sec
[WS] "161792"
n= 0 t: 12.372 sec
[WS] "163840"
n= 0 t: 12.374 sec
n= 3 t: 12.449 sec
[WS] "165888"
n= 2 t: 12.513 sec
[WS] "167936"
n= 1 t: 12.584 sec
[WS] "169984"
n= 0 t: 12.653 sec
[WS] "172032"
n= 0 t: 12.655 sec
n= 3 t: 12.738 sec
[WS] "174080"
n= 2 t: 12.821 sec
[WS] "176128"
n= 1 t: 12.889 sec
[WS] "178176"
n= 0 t: 12.960 sec
[WS] "180224"
n= 0 t: 12.963 sec
n= 3 t: 13.033 sec
[WS] "182272"
n= 2 t: 13.104 sec
[WS] "184320"
n= 1 t: 13.171 sec
[WS] "186368"
n= 0 t: 13.248 sec
[WS] "188416"
n= 0 t: 13.250 sec
n= 3 t: 13.319 sec
[WS] "190464"
n= 2 t: 13.385 sec
[WS] "192512"
n= 1 t: 14.278 sec
[WS] "194560"
n= 0 t: 14.349 sec
[WS] "196608"
n= 0 t: 14.352 sec
n= 3 t: 14.425 sec
[WS] "198656"
n= 2 t: 14.500 sec
[WS] "200704"
n= 1 t: 14.568 sec
[WS] "202752"
n= 0 t: 14.635 sec
[WS] "204800"
n= 0 t: 14.637 sec
n= 3 t: 14.716 sec
[WS] "206848"
n= 2 t: 14.792 sec
[WS] "208896"
n= 1 t: 14.860 sec
[WS] "210944"
n= 0 t: 14.935 sec
[WS] "212992"
n= 0 t: 14.938 sec
n= 3 t: 15.015 sec
[WS] "215040"
n= 2 t: 15.079 sec
[WS] "217088"
n= 1 t: 15.147 sec
[WS] "219136"
n= 0 t: 15.213 sec
[WS] "221184"
n= 0 t: 15.215 sec
n= 3 t: 15.286 sec
[WS] "223232"
n= 2 t: 15.355 sec
[WS] "225280"
n= 1 t: 16.028 sec
[WS] "227328"
n= 0 t: 16.100 sec
[WS] "229376"
n= 0 t: 16.103 sec
n= 3 t: 16.175 sec
[WS] "231424"
n= 2 t: 16.249 sec
[WS] "233472"
n= 1 t: 16.323 sec
[WS] "235520"
n= 0 t: 16.391 sec
[WS] "237568"
n= 0 t: 16.393 sec
n= 3 t: 16.462 sec
[WS] "239616"
n= 2 t: 16.535 sec
[WS] "241664"
n= 1 t: 16.604 sec
[WS] "243712"
n= 0 t: 16.673 sec
[WS] "245760"
n= 0 t: 16.675 sec
n= 3 t: 16.743 sec
[WS] "247808"
n= 2 t: 16.810 sec
[WS] "249856"
n= 1 t: 16.878 sec
[WS] "251904"
n= 0 t: 16.948 sec
[WS] "253952"
n= 0 t: 16.950 sec
n= 3 t: 17.023 sec
[WS] "256000"
n= 2 t: 17.089 sec
[WS] "258048"
n= 1 t: 17.166 sec
[WS] "260096"
n= 0 t: 17.244 sec
[WS] "262144"
n= 0 t: 17.246 sec
n= 3 t: 17.316 sec
[WS] "264192"
n= 2 t: 18.124 sec
[WS] "266240"
n= 1 t: 18.194 sec
[WS] "268288"
n= 0 t: 18.265 sec
[WS] "270336"
n= 0 t: 18.268 sec
n= 3 t: 18.339 sec
[WS] "272384"
n= 2 t: 18.407 sec
[WS] "274432"
n= 1 t: 18.477 sec
[WS] "276480"
n= 0 t: 18.543 sec
[WS] "278528"
n= 0 t: 18.546 sec
n= 3 t: 18.612 sec
[WS] "280576"
n= 2 t: 19.313 sec
[WS] "282624"
n= 1 t: 19.378 sec
[WS] "284672"
n= 0 t: 19.447 sec
[WS] "286720"
n= 0 t: 19.449 sec
n= 3 t: 19.528 sec
[WS] "288768"
n= 2 t: 19.599 sec
[WS] "290816"
n= 1 t: 19.666 sec
[WS] "292864"
n= 0 t: 19.734 sec
[WS] "294912"
n= 0 t: 19.736 sec
n= 3 t: 19.815 sec
[WS] "296960"
n= 2 t: 19.886 sec
[WS] "299008"
n= 1 t: 19.955 sec
[WS] "301056"
n= 0 t: 20.031 sec
[WS] "303104"
n= 0 t: 20.034 sec
n= 3 t: 20.109 sec
[WS] "305152"
n= 2 t: 20.179 sec
[WS] "307200"
n= 1 t: 20.245 sec
[WS] "309248"
n= 0 t: 20.316 sec
[WS] "311296"
n= 0 t: 20.318 sec
n= 3 t: 20.391 sec
[WS] "313344"
n= 2 t: 20.464 sec
[WS] "315392"
n= 1 t: 20.532 sec
[WS] "317440"
n= 0 t: 20.602 sec
[WS] "319488"
n= 0 t: 20.604 sec
n= 3 t: 20.685 sec
[WS] "321536"
n= 2 t: 20.753 sec
[WS] "323584"
n= 1 t: 20.830 sec
[WS] "325632"
n= 0 t: 20.899 sec
[WS] "327680"
n= 0 t: 20.901 sec
n= 3 t: 20.967 sec
[WS] "329728"
n= 2 t: 21.037 sec
[WS] "331776"
n= 1 t: 21.104 sec
[WS] "333824"
n= 0 t: 21.172 sec
[WS] "335872"
n= 0 t: 21.174 sec
n= 3 t: 21.245 sec
[WS] "337920"
n= 2 t: 21.345 sec
[WS] "339968"
n= 1 t: 21.440 sec
[WS] "342016"
n= 0 t: 21.509 sec
[WS] "344064"
n= 0 t: 21.512 sec
n= 3 t: 21.586 sec
[WS] "346112"
n= 2 t: 21.661 sec
[WS] "348160"
n= 1 t: 21.731 sec
[WS] "350208"
n= 0 t: 21.798 sec
[WS] "352256"
n= 0 t: 21.801 sec
n= 3 t: 21.876 sec
[WS] "354304"
n= 2 t: 21.971 sec
[WS] "356352"
n= 1 t: 22.041 sec
[WS] "358400"
n= 0 t: 22.109 sec
[WS] "360448"
n= 0 t: 22.112 sec
n= 3 t: 22.185 sec
[WS] "362496"
n= 2 t: 22.253 sec
[WS] "364544"
n= 1 t: 22.321 sec
[WS] "366592"
n= 0 t: 22.388 sec
[WS] "368640"
n= 0 t: 22.389 sec
n= 3 t: 22.455 sec
[WS] "370688"
n= 2 t: 22.522 sec
[WS] "372736"
n= 1 t: 22.589 sec
[WS] "374784"
n= 0 t: 22.657 sec
[WS] "376832"
n= 0 t: 22.659 sec
n= 3 t: 22.730 sec
[WS] "378880"
n= 2 t: 22.801 sec
[WS] "380928"
n= 1 t: 22.869 sec
[WS] "382976"
n= 0 t: 22.939 sec
[WS] "385024"
n= 0 t: 22.941 sec
n= 3 t: 23.008 sec
[WS] "387072"
n= 2 t: 23.078 sec
[WS] "389120"
n= 1 t: 23.149 sec
[WS] "391168"
n= 0 t: 23.219 sec
[WS] "393216"
n= 0 t: 23.221 sec
n= 3 t: 24.147 sec
[WS] "395264"
n= 2 t: 24.227 sec
[WS] "397312"
n= 1 t: 24.296 sec
[WS] "399360"
n= 0 t: 24.361 sec
[WS] "401408"
n= 0 t: 24.364 sec
n= 3 t: 24.439 sec
[WS] "403456"
n= 2 t: 24.518 sec
[WS] "405504"
n= 1 t: 25.341 sec
[WS] "407552"
n= 0 t: 25.408 sec
[WS] "409600"
n= 0 t: 25.410 sec
n= 3 t: 25.481 sec
[WS] "411648"
n= 2 t: 25.556 sec
[WS] "413696"
n= 1 t: 25.621 sec
[WS] "415744"
n= 0 t: 25.691 sec
[WS] "417792"
n= 0 t: 25.693 sec
n= 3 t: 25.765 sec
[WS] "419840"
n= 2 t: 25.830 sec
[WS] "421888"
n= 1 t: 28.289 sec
[WS] "423936"
n= 0 t: 28.356 sec
[WS] "425984"
n= 0 t: 28.358 sec
n= 3 t: 28.439 sec
[WS] "428032"
n= 2 t: 29.252 sec
[WS] "430080"
n= 1 t: 29.325 sec
[WS] "432128"
n= 0 t: 29.396 sec
[WS] "434176"
n= 0 t: 29.398 sec
n= 3 t: 29.467 sec
[WS] "436224"
n= 2 t: 29.541 sec
[WS] "438272"
n= 1 t: 29.609 sec
[WS] "440320"
n= 0 t: 29.679 sec
[WS] "442368"
n= 0 t: 29.682 sec
n= 3 t: 29.758 sec
[WS] "444416"
n= 2 t: 31.375 sec
[WS] "446464"
n= 1 t: 31.443 sec
[WS] "448512"
n= 0 t: 31.510 sec
[WS] "450560"
n= 0 t: 31.512 sec
n= 3 t: 31.589 sec
[WS] "452608"
n= 2 t: 31.655 sec
[WS] "454656"
n= 1 t: 31.724 sec
[WS] "456704"
n= 0 t: 32.612 sec
[WS] "458752"
n= 0 t: 32.614 sec
n= 3 t: 32.683 sec
[WS] "460800"
n= 2 t: 32.757 sec
[WS] "462848"
n= 1 t: 32.833 sec
[WS] "464896"
n= 0 t: 32.905 sec
[WS] "466944"
n= 0 t: 32.907 sec
n= 3 t: 32.975 sec
[WS] "468992"
n= 2 t: 33.041 sec
[WS] "471040"
n= 1 t: 33.803 sec
[WS] "473088"
n= 0 t: 33.875 sec
[WS] "475136"
n= 0 t: 33.877 sec
n= 3 t: 33.953 sec
[WS] "477184"
n= 2 t: 34.017 sec
[WS] "479232"
n= 1 t: 34.087 sec
[WS] "481280"
n= 0 t: 34.162 sec
[WS] "483328"
n= 0 t: 34.164 sec
n= 3 t: 34.241 sec
[WS] "485376"
n= 2 t: 34.307 sec
[WS] "487424"
n= 1 t: 34.373 sec
[WS] "489472"
n= 0 t: 35.107 sec
[WS] "491520"
n= 0 t: 35.109 sec
n= 3 t: 35.182 sec
[WS] "493568"
n= 2 t: 35.251 sec
[WS] "495616"
n= 1 t: 35.318 sec
[WS] "497664"
n= 0 t: 35.394 sec
[WS] "499712"
n= 0 t: 35.397 sec
n= 3 t: 35.478 sec
[WS] "501760"
n= 2 t: 35.545 sec
[WS] "503808"
n= 1 t: 35.618 sec
[WS] "505856"
n= 0 t: 35.689 sec
[WS] "507904"
n= 0 t: 35.691 sec
n= 3 t: 36.604 sec
[WS] "509952"
n= 2 t: 36.672 sec
[WS] "512000"
n= 1 t: 36.738 sec
[WS] "514048"
n= 0 t: 36.814 sec
[WS] "516096"
n= 0 t: 36.816 sec
n= 3 t: 36.886 sec
[WS] "518144"
n= 2 t: 36.951 sec
[WS] "520192"
n= 1 t: 37.026 sec
[WS] "522240"
n= 0 t: 37.095 sec
[WS] "524288"
n= 0 t: 37.097 sec
n= 3 t: 37.168 sec
[WS] "526336"
n= 2 t: 37.240 sec
[WS] "528384"
n= 1 t: 37.309 sec
[WS] "530432"
n= 0 t: 37.377 sec
[WS] "532480"
n= 0 t: 37.379 sec
n= 3 t: 37.445 sec
[WS] "534528"
n= 2 t: 37.518 sec
[WS] "536576"
n= 1 t: 37.589 sec
[WS] "538624"
n= 0 t: 37.656 sec
[WS] "540672"
n= 0 t: 37.658 sec
n= 3 t: 38.473 sec
[WS] "542720"
n= 2 t: 38.547 sec
[WS] "544768"
n= 1 t: 38.622 sec
[WS] "546816"
n= 0 t: 38.689 sec
[WS] "548864"
n= 0 t: 38.691 sec
n= 3 t: 38.767 sec
[WS] "550912"
n= 2 t: 38.835 sec
[WS] "552960"
n= 1 t: 38.900 sec
[WS] "555008"
n= 0 t: 38.974 sec
[WS] "557056"
n= 0 t: 38.977 sec
n= 3 t: 40.535 sec
[WS] "559104"
n= 2 t: 40.609 sec
[WS] "561152"
n= 1 t: 40.682 sec
[WS] "563200"
n= 0 t: 40.747 sec
[WS] "565248"
n= 0 t: 40.749 sec
n= 3 t: 40.825 sec
[WS] "567296"
n= 2 t: 40.905 sec
[WS] "569344"
n= 1 t: 40.969 sec
[WS] "571392"
n= 0 t: 41.039 sec
[WS] "573440"
n= 0 t: 41.041 sec
n= 3 t: 41.117 sec
[WS] "575488"
n= 2 t: 41.185 sec
[WS] "577536"
n= 1 t: 41.253 sec
[WS] "579584"
n= 0 t: 41.331 sec
[WS] "581632"
n= 0 t: 41.333 sec
n= 3 t: 41.457 sec
[WS] "583680"
n= 2 t: 41.524 sec
[WS] "585728"
n= 1 t: 41.592 sec
[WS] "587776"
n= 0 t: 43.310 sec
[WS] "589824"
n= 0 t: 43.312 sec
n= 3 t: 43.384 sec
[WS] "591872"
n= 2 t: 43.464 sec
[WS] "593920"
n= 1 t: 43.535 sec
[WS] "595968"
n= 0 t: 43.604 sec
[WS] "598016"
n= 0 t: 43.607 sec
n= 3 t: 43.685 sec
[WS] "600064"
n= 2 t: 43.749 sec
[WS] "602112"
n= 1 t: 43.818 sec
[WS] "604160"
n= 0 t: 43.889 sec
[WS] "606208"
n= 0 t: 43.892 sec
n= 3 t: 43.971 sec
[WS] "608256"
n= 2 t: 44.038 sec
[WS] "610304"
n= 1 t: 44.104 sec
[WS] "612352"
n= 0 t: 44.194 sec
[WS] "614400"
n= 0 t: 44.196 sec
n= 3 t: 45.118 sec
[WS] "616448"
n= 2 t: 45.184 sec
[WS] "618496"
n= 1 t: 45.252 sec
[WS] "620544"
n= 0 t: 45.324 sec
[WS] "622592"
n= 0 t: 45.326 sec
n= 3 t: 45.396 sec
[WS] "624640"
n= 2 t: 45.471 sec
[WS] "626688"
n= 1 t: 45.538 sec
[WS] "628736"
n= 0 t: 46.349 sec
[WS] "630784"
n= 0 t: 46.352 sec
n= 3 t: 46.471 sec
[WS] "632832"
n= 2 t: 46.549 sec
[WS] "634880"
n= 1 t: 46.613 sec
[WS] "636928"
n= 0 t: 46.679 sec
[WS] "638976"
n= 0 t: 46.681 sec
n= 3 t: 46.754 sec
[WS] "641024"
n= 2 t: 46.821 sec
[WS] "643072"
n= 1 t: 47.575 sec
[WS] "645120"
n= 0 t: 47.641 sec
[WS] "647168"
n= 0 t: 47.643 sec
n= 3 t: 47.714 sec
[WS] "649216"
n= 2 t: 47.787 sec
[WS] "651264"
n= 1 t: 47.862 sec
[WS] "653312"
n= 0 t: 47.926 sec
[WS] "655360"
n= 0 t: 47.928 sec
n= 3 t: 48.006 sec
[WS] "657408"
n= 2 t: 48.079 sec
[WS] "659456"
n= 1 t: 48.145 sec
[WS] "661504"
>reset();
=undefined

661,504 * 8 / 48.125 = 109,964 Bits per second

---

Attachments:

• EraseFlash.bat
  
• ESP8266MODbd.jpg
• ESPinfo.bat
• FlashESP8266_4M_40mhz.bat
• WSDesp8266C.js

---

Posted at 2018-01-31 by Polypod

Thanks, very handy the .bat files. I followed the procedure with no change in speed. I placed the files in the "espruino_1v95_esp8266" directory. I ran info, erase and flash batch files.

C:\Users\Pok\myfolder\esp\tools\espruino_1v95_esp8266>esptool.py --port COM20 --
baud 115200 --no-stub chip_id
esptool.py v2.0.1
Connecting....
Detecting chip type... ESP8266
Chip is ESP8266
Enabling default SPI flash mode...
Chip ID: 0x000e9f1c
Hard resetting...

C:\Users\Pok\myfolder\esp\tools\espruino_1v95_esp8266>esptool.py --port COM20 --
baud 115200 --no-stub read_mac
esptool.py v2.0.1
Connecting....
Detecting chip type... ESP8266
Chip is ESP8266
Enabling default SPI flash mode...
MAC: 2c:3a:e8:0e:9f:1c
Hard resetting...

C:\Users\Pok\myfolder\esp\tools\espruino_1v95_esp8266>esptool.py --port COM20 --
baud 115200 --no-stub flash_id
esptool.py v2.0.1
Connecting....
Detecting chip type... ESP8266
Chip is ESP8266
Enabling default SPI flash mode...
Manufacturer: ef
Device: 4016
Detected flash size: 4MB
Hard resetting...

C:\Users\Pok\myfolder\esp\tools\espruino_1v95_esp8266>esptool.py --port COM20 er
ase_flash
esptool.py v2.0.1
Connecting....
Detecting chip type... ESP8266
Chip is ESP8266
Uploading stub...
Running stub...
Stub running...
Erasing flash (this may take a while)...
Chip erase completed successfully in 7.4s
Hard resetting...

C:\Users\Pok\myfolder\esp\tools\espruino_1v95_esp8266>esptool.py --port COM20 --
baud 115200 write_flash --flash_freq 40m --flash_mode qio --flash_size 4MB 0x000
0 "boot_v1.6.bin" 0x1000 espruino_esp8266_user1.bin 0x3FC000 esp_init_data_defau
lt.bin 0x3FE000 blank.bin
esptool.py v2.0.1
Connecting....
Detecting chip type... ESP8266
Chip is ESP8266
Uploading stub...
Running stub...
Stub running...
Configuring flash size...
Flash params set to 0x0040
Compressed 3856 bytes to 2763...
Wrote 3856 bytes (2763 compressed) at 0x00000000 in 0.2 seconds (effective 124.4
 kbit/s)...
Hash of data verified.
Compressed 456756 bytes to 320993...
Wrote 456756 bytes (320993 compressed) at 0x00001000 in 28.3 seconds (effective
129.1 kbit/s)...
Hash of data verified.
Compressed 128 bytes to 75...
Wrote 128 bytes (75 compressed) at 0x003fc000 in 0.0 seconds (effective 78.8 kbi
t/s)...
Hash of data verified.
Compressed 4096 bytes to 26...
Wrote 4096 bytes (26 compressed) at 0x003fe000 in 0.0 seconds (effective 4095.8
kbit/s)...
Hash of data verified.

Leaving...
Hard resetting...

I replugged and reflashed the WSdesp8266C. It does not go faster than before.

 _____                 _
|   __|___ ___ ___ _ _|_|___ ___
|   __|_ -| . |  _| | | |   | . |
|_____|___|  _|_| |___|_|_|_|___|
          |_| http://espruino.com
 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
Flash map 4MB:512/512, manuf 0xef chip 0x4016
>Start connection process
Try Connecting to WiFi  Gardening, cheaper than therapy
=undefined
Test for error
Test for error
Test for error
null
connected? err= null info= {
  "ip": "192.168.2.5",
  "netmask": "255.255.255.0",
  "gw": "192.168.2.1",
  "mac": "2c:3a:e8:0e:9f:1c"
 }
Wi-Fi Connected
>
=undefined
n= 4 t: 0.018 sec
n= 3 t: 1.688 sec
[WS] "2048"
n= 2 t: 3.165 sec
[WS] "4096"
n= 1 t: 4.655 sec
[WS] "6144"
n= 0 t: 6.156 sec
[WS] "8192"
n= 0 t: 6.159 sec
n= 3 t: 7.659 sec
[WS] "10240"
n= 2 t: 9.126 sec
[WS] "12288"
n= 1 t: 10.600 sec
[WS] "14336"
n= 0 t: 12.089 sec
[WS] "16384"
n= 0 t: 12.091 sec
n= 3 t: 13.568 sec
[WS] "18432"
n= 2 t: 15.080 sec
[WS] "20480"
n= 1 t: 16.564 sec

---

Attachments:

• photo (3).JPG