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After flashing the USB/serial device gets left in an odd state.

I have found if you connect with a serial programme ( screen on linux, putty ) on windows with a baud of 115200 after flashing, you get a command prompt. Then quit this, and try the connection from the web ide with baud rate 115200.

The other related factor is the ESP8266 outputs on the UART and boot at 76800 baud and spits out:

 ets Jan  8 2013,rst cause:1, boot mode:(3,7)

load 0x40100000, len 25336, room 16 
tail 8
chksum 0x1f
load 0x3ffe8000, len 2544, room 0 
tail 0
chksum 0xb8
load 0x3ffe89f0, len 1044, room 8 
tail 12
chksum 0x7f
csum 0x7f 

I think this output confuses the web ide, an if you look in the console you see 'overrun' or something similar, and the nodejs serialport connection is disconnected. Perhaps this could be commented out and see if this works a work around?

@LawrenceDon2014

This has been fixed, it will be in a Travis build.

An optional callback would need to be added, and the code here modified to call the callback if it exists.

https://github.com/espruino/Espruino/blob/c09739f663d2074619e9fad88dbb684ea1309cda/libs/network/esp8266/jswrap_esp8266_network.c#L1108-L1136

function onPageRequest(req, res) {

	var a = url.parse(req.url, true);
	console.log(a);

  console.log(req.headers);
  console.log(req.method);

headers:

{
  "Host": "192.168.1.13",
  "Connection": "keep-alive",
  "Cache-Control": "max-age=0",
  "Upgrade-Insecure-Requests": "1",
  "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.96 Safari/537.36",
  "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8",
  "Accept-Encoding": "gzip, deflate, sdch",
  "Accept-Language": "en-GB,en-US;q=0.8,en;q=0.6"
 }

If you are looking to server static content, then you don't need the espruino todo the heavy lifting, you can leave that to the much more powerful browser.

On the sd card, store .gz versions of the files, and then have the onPageRequest handler server the compressed content:

function onPageRequest(req, res) {

	var a = url.parse(req.url, true);
	console.log(a);

    file=a.pathname;
	if (file == '/') {
		file='/index.htm';
	}
  var headers= {};
    var f;
    try {
	f = E.openFile('www' + file, "r");
    }
      catch(e) {
        console.log('no file');
        // look for compressed
        try {
        f = E.openFile('www' + file + '.gz', "r");
        headers['Content-Encoding']='gzip';
        } catch(e) {}
    }
  
	if (f !== undefined) {
      mime='text/html';
      if ( file.substr(-2)  == 'js' ) mime='application/javascript';
      if ( file.substr(-3)  == 'css' ) mime='text/css';
      if ( file.substr(-3)  == 'ico' ) mime='image/vnd.microsoft.icon';
      
      headers['Content-Type']= mime;

	  res.writeHead(200, headers);
    console.log('started ' + file );
         f.pipe(res,{chunkSize:512, end:false,  complete:function(){
          console.log("Complete");
          f.close();
          res.end();
          } } );

	} else {
		res.writeHead(404, {
			'Content-Type': 'text/plain'
		});
		res.end("404: Page " + a.pathname + " not found");
	}
}

This assumes all of the web assets are in www ( you could use sub folders www/css)

As an example of fetching:
http://192.168.15.13/pure-min.css

The difference is:
pure-min.css 31KB 2 secs to fetch
pure-min.css.gz 600ms secs to fetch

Thanks. I'll try the code tomorrow.

It definitely can handle more than one request, it just depends on how busy the Espruino is.

Can it if the requests overlap?

And you can also use quoted literal for your HTML - so you can then span multiple lines:

var html=`
Line 1
Line 2
`;

If you look in chrome in the developer tools, in the network tab you can see the requests sent.

You'll see the requests that never get fulfilled...

As the http server can only handle one request at a time, when they overlap it does not work and buffers get ful and it all goes to custard!

One work around is to use github and the github.io with your user name. You can out the CSS and js file and images there, and have the espruino just send the main code.

Added as a github issue.

https://github.com/espruino/Espruino/issues/1163

Are you using 115200 in the ide baud rate setting?

Not quite sure what you are asking....

Here is a thread for connection the Nokia display to the esp8266... not sure which board you are using..
http://forum.espruino.com/conversations/287196/#comment13070259

Those characters look like the baud rate is wrong. Check you have 115200 as the default for ide is 9600

At this point in the web ide disconnect and then connect, and you will be able to type again...

Hi, this in prepartion for ota updates. The espruino_partition.bin contains these partitions:

factory 0x10000
ota_0   0x200000

When there is a ota type partition the esp-idf checks to see if there is valid code in the partition. At this stage nothing is uploaded to 0x200000, and the data is 0xff.

The esp_ota_get_boot_partition() call checks the ota partition and finds invalid data, so spits out this error.

It could be suppressed and added back when the ota updates are sorted out, however it can be safely ignored.

in your first post, change:

NRF.findDevices(function(d) {
to
NRF.findDevices(function(devices) {

This Reddit shows a video controlling with tv remote...

https://www.reddit.com/r/hardware/comments/1wzzax/superbowl_led_hat_hacks_firing_pixmob_leds_w/

My son has a sonic screwdriver remote that turns off and on all tvs, so that might be worth a try...

It was at Eden park in a large stadium - they could control sections of seating and when it was out turn to move, it would light up and buzz. They also could strobe the colours matching a laser display - its quite impressive. There where quite a few left on empty seats, so I though they would be handy to have....

I went the 2017 world masters game opening ceremony where these bands were used. Apparently they are controlled by Ir.

I found this on github, but the guy was unable to brute force the ir codes.

https://github.com/yeokm1/reverse-engineering-ndp2016-wristband

It has 3xrgb leds, an accelerometer and an ir reciever, and runs off 2x cr2032 coin cells. Rather than break up for parts I thought it would be good to see if it could be controlled via Espruino

Anyone got any ideas how how to work out how to control the wrist band?

Here is an example from the forum

http://forum.espruino.com/conversations/300344/

Please paste your code....

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

function DataView.getInt16(byteOffset)

Gordon has recently added the Dataview class which allows you to pack and read from a byte array have a look in the reference...

All of the esp32 boards I have seen are 4mb - because of the RTOS and libs, the firmware is bigger so you need that size. I have heard good things about the wemos esp8266 too, but have had not direct experience. I think it should be suitable.

You could reflash with your esp-open-rtos and see if that still works.

Then you know if it is hardware on not...

@Scargill

I'm also at a loss as to why the limited space for code - given that the ESP12 has 3 meg spare? I wonder if there are any plans to check for that and expand user space accordingly?

The esp8266 has bags of FLASH, but bugger all RAM. There is only 80K and a lot of this is taken up by the OS and interpreter. Quite a bit of work has been done to strings into flash to free up precious RAM. The amount of save() code space is 12K compressed, so this works out to be about 20K of js code.