Ubuntu chromium and web ide #6150

espruino-discuss3 · 2025-02-12T15:57:53Z

espruino-discuss3
Feb 12, 2025
Maintainer

Posted at 2019-04-30 by netmonk

Good evening,
Im able to connect to device using gatttool command

root@macronetmonk:/var/log# gatttool -t random -b FA:EE:05:A7:C7:34 -I
[FA:EE:05:A7:C7:34][LE]> connect Attempting to connect to
FA:EE:05:A7:C7:34 Connection successful
[FA:EE:05:A7:C7:34][LE]> help

But im unable to connect to it using web ide app from chromium, the device is not appearing when i try to connect.
It works very well from the same computer station, when im using windows10, i succed to connect and dev with windows chrome. But when i switch back to ubuntu (latest version 19.*) not possible to connect.

anybody had faced this issue before, and how did you solved it ?

espruino-discuss3 · 2025-02-12T15:57:56Z

espruino-discuss3
Feb 12, 2025
Maintainer Author

Posted at 2019-04-30 by netmonk

After activating bluetooth in chrome with enabling this switch :
chrome://flags/#enable-experimental-web-platform-features
i face a new issue :

serviceworker> active
Handling URL "https://www.espruino.com/ide/"
Couldn't connect to wss://localhost:31234 - disabling websockets for this session
ERROR: serial_frame: getPorts timeout, disabling
ERROR: getURL("/serial/ports") error : Not Found
/serial/ports doesn't exist - disabling WebSocket support
>>> Connecting...
Set Slow Write = true
BT> ERROR: NotFoundError: Bluetooth adapter not available.
ERROR: [notify_error] Connection Failed.
>>> Connection Failed.

Posted at 2019-05-01 by @gfwilliams

That's odd - once you've enabled chrome://flags/#enable-experimental-web-platform-features it'll usually 'just work' (http://www.espruino.com/Quick+Start+BLE#linux)

Have you tried just restarting the whole system and seeing if that's any better?

I use Linux for all my work, and occasionally I do get a Bluetooth adapter not available. and can fix it just by restarting the bluetooth stack with sudo /etc/init.d/bluetooth restart

What's your bluetoothd version? bluetoothd --version

And also what's the version of Chromium? Sometimes the builds are a long way behind the Chrome builds, so you could try installing Chrome and seeing if that's any better.

Posted at 2019-05-01 by netmonk

plonky@macronetmonk:~$ bluetoothd --version
5.50
plonky@macronetmonk:~$ sudo /etc/init.d/bluetooth restart
[sudo] password for plonky: 
[ ok ] Restarting bluetooth (via systemctl): bluetooth.service.
plonky@macronetmonk:~$ chromium --version
Chromium 74.0.3729.108 snap

Still getting the error :

serviceworker> active
Handling URL "https://www.espruino.com/ide/"
Couldn't connect to wss://localhost:31234 - disabling websockets for this session
ERROR: serial_frame: getPorts timeout, disabling
ERROR: getURL("/serial/ports") error : Not Found
/serial/ports doesn't exist - disabling WebSocket support
>>> Connecting...
Set Slow Write = true
BT> ERROR: NotFoundError: Bluetooth adapter not available.
ERROR: [notify_error] Connection Failed.
>>> Connection Failed.
>>> Connecting...
Set Slow Write = true
BT> ERROR: NotFoundError: Bluetooth adapter not available.
ERROR: [notify_error] Connection Failed.
>>> Connection Failed.

Posted at 2019-05-01 by @gfwilliams

You don't have to worry about the serial_frame and /serial/ports errors, but yeah, BT> ERROR: NotFoundError: Bluetooth adapter not available. is your issue.

Chromium looks up to date too. So do you see the Web Bluetooth menu item? Just nothing happens when you click it? Or do you get some other error/warning.

Googling it, it might be that the bluetooth adaptor is turned off in Bluetooth settings? Worth a check - I don't know whether gatttool might have been able to overwrite the settings since you were running it as root.

I know you tried gatttool but please can you just see if sudo hcitool lescan is able to list devices?

Posted at 2019-05-01 by netmonk

plonky@macronetmonk:~$ sudo hcitool lescan
[sudo] password for plonky: 
LE Scan ...
FA:EE:05:A7:C7:34 Pixl.js c734
FA:EE:05:A7:C7:34 (unknown)
F0:AB:54:4B:3F:8C TNT_BW  
F0:AB:54:4B:3F:8C (unknown)

Posted at 2019-05-02 by @gfwilliams

That's properly strange then - hcitool looks like it's working great.

I'm not sure what to suggest - I guess it could be some kind of permissions issue? You could try adding an external USB BLE dongle and see if that helps at all.

A workaround would be to install the Espruino command-line tools:

install Node.js 8 (not 10 - 'noble' Bluetooth LE is still broken in that)
npm install espruino
espruino -d Pixl --ide 8080 to connect to the first Pixl.js device that's found
Go to http://localhost:8080/ in the browser to get the IDE

This is 100% a Web Bluetooth/Chrome issue though (rather than being specific to the Espruino IDE), so perhaps the Chrome devs would have some ideas about it.

I'm on Mint 19.1 (which is basically Ubuntu 18.04) and it works fine on 2 separate devices. I'd have thought that I'd have heard more from people if it was broken for everyone in Ubuntu 19 though.

Posted at 2019-05-02 by netmonk

Good monring Gordon,

I will receive an external dongle by end of week to make more test.
I will also try the NPM way you suggest and keep you informed. :)

Thank you so much for your answers.

Posted at 2019-05-02 by netmonk

Well well well,
Not good.
As far as i can see:

plonky@macronetmonk:~/node_modules/espruino/bin$ ./espruino-cli.js --list
Espruino Command-line Tool 0.1.27
-----------------------------------

PORTS:

No port listed.
I can still connect using gatttool, but using a random address on computer side.
If i use a public address, it doesn't work at all:

plonky@macronetmonk:~/node_modules/espruino/bin$ gatttool -t random -b FA:EE:05:A7:C7:34 -I
[FA:EE:05:A7:C7:34][LE]> connect
Attempting to connect to FA:EE:05:A7:C7:34
Connection successful
Notification handle = 0x000d value: 3c 2d 20 54 65 72 6d 69 6e 61 6c 0d 0a 3e 
[FA:EE:05:A7:C7:34][LE]> 

(gatttool:18294): GLib-WARNING **: 17:06:47.993: Invalid file descriptor.
plonky@macronetmonk:~/node_modules/espruino/bin$ man gatttool
plonky@macronetmonk:~/node_modules/espruino/bin$ gatttool -t public -b FA:EE:05:A7:C7:34 -I
[FA:EE:05:A7:C7:34][LE]> connect
Attempting to connect to FA:EE:05:A7:C7:34
[FA:EE:05:A7:C7:34][LE]> 
plonky@macronetmonk:~/node_modules/espruino/bin$

Posted at 2019-05-02 by @gfwilliams

Ahh - https://www.npmjs.com/package/espruino might be handy.

Check that which node returns something, and then do:

sudo setcap cap_net_raw+eip $(eval readlink -f `which node`)

That gives Node.js the permissions to access Bluetooth without running as a superuser.

Can you also try ./espruino-cli.js --list --verbose and see if it shows any errors?

Might be that somehow NPM hasn't installed the relevant Bluetooth stuff (and sorry, I should have mentioned you can do npm install espruino -g to install it globally so you don't have to manually execute the JS file.

Posted at 2019-05-02 by netmonk

plonky@macronetmonk:~/node_modules/espruino/bin$ sudo setcap cap_net_raw+eip $(eval readlink -f `which node`)
[sudo] password for plonky: 
plonky@macronetmonk:~/node_modules/espruino/bin$ ./espruino-cli.js --list
Espruino Command-line Tool 0.1.27
-----------------------------------

PORTS:
  fa:ee:05:a7:c7:34 (Pixl.js c734)
plonky@macronetmonk:~/node_modules/espruino/bin$ ./espruino-cli.js --list --verbose
0.1.27
Espruino Command-line Tool 0.1.27
-----------------------------------

Acorn library not found - you'll need it for compiled code
Found /home/plonky/node_modules/espruino/libs/targz.js
Found /home/plonky/node_modules/espruino/libs/utf8.js
Found /home/plonky/node_modules/espruino/espruino.js
Found /home/plonky/node_modules/espruino/core/codeWriter.js
Found /home/plonky/node_modules/espruino/core/config.js
Found /home/plonky/node_modules/espruino/core/env.js
Found /home/plonky/node_modules/espruino/core/flasher.js
Found /home/plonky/node_modules/espruino/core/modules.js
Found /home/plonky/node_modules/espruino/core/notifications.js
Found /home/plonky/node_modules/espruino/core/serial.js
Found /home/plonky/node_modules/espruino/core/serial_chrome_serial.js
No chrome.serial - Chrome Serial disabled
Found /home/plonky/node_modules/espruino/core/serial_chrome_socket.js
No chrome.sockets - Chrome Socket disabled
Found /home/plonky/node_modules/espruino/core/serial_frame.js
Found /home/plonky/node_modules/espruino/core/serial_noble.js
Found /home/plonky/node_modules/espruino/core/serial_node_serial.js
Found /home/plonky/node_modules/espruino/core/serial_node_socket.js
Found /home/plonky/node_modules/espruino/core/serial_web_audio.js
Found /home/plonky/node_modules/espruino/core/serial_web_bluetooth.js
Found /home/plonky/node_modules/espruino/core/serial_websocket_local.js
Found /home/plonky/node_modules/espruino/core/serial_websocket_relay.js
Found /home/plonky/node_modules/espruino/core/serial_winnus.js
Not on Windows, Winnus not needed
Found /home/plonky/node_modules/espruino/core/terminal.js
Found /home/plonky/node_modules/espruino/core/utils.js
Found /home/plonky/node_modules/espruino/plugins/assembler.js
Found /home/plonky/node_modules/espruino/plugins/boardJSON.js
Found /home/plonky/node_modules/espruino/plugins/compiler.js
Found /home/plonky/node_modules/espruino/plugins/getGitHub.js
Found /home/plonky/node_modules/espruino/plugins/localModules.js
Found /home/plonky/node_modules/espruino/plugins/minify.js
Found /home/plonky/node_modules/espruino/plugins/saveOnSend.js
Found /home/plonky/node_modules/espruino/plugins/setTime.js
Found /home/plonky/node_modules/espruino/plugins/unicode.js
Loading UTF8 with require
Found /home/plonky/node_modules/espruino/plugins/versionChecker.js
Initialising CodeWriter
Initialising Config
Initialising Env
Initialising Flasher
Initialising Modules
Initialising Notifications
Initialising Serial
  - Initialising Serial Noble Bluetooth LE
  - Initialising Serial Node Serial
  - Initialising Serial Node Socket
  - Initialising Serial Web Bluetooth
Initialising Utils
Initialising Status
Initialising Assembler
Initialising BoardJSON
Initialising Compiler
Initialising GetGitHub
Initialising LocalModules
Initialising Minify
Initialising SaveOnSend
Initialising SetTime
Initialising Unicode
Initialising VersionChecker
Initialising CoreModules
Searching for serial ports...
Noble: getPorts - not initialised
No navigator.bluetooth - Web Bluetooth not enabled
Noble: stateChange -> poweredOn
Noble: Disable Web Bluetooth as we have Noble instead
Noble: Starting scan
Noble: Found UART device: Pixl.js c734 fa:ee:05:a7:c7:34
Noble: Found device: TNT_BW   f0:ab:54:4b:3f:8c
Noble: Found device: TNT_BW   f0:ab:54:4b:3f:8c
PORTS:
  fa:ee:05:a7:c7:34 (Pixl.js c734)

looks better ! :)

Posted at 2019-05-02 by netmonk

And there we go :

plonky@macronetmonk:~/node_modules/espruino/bin$ ./espruino-cli.js -d Pixl --ide 8080
Espruino Command-line Tool 0.1.27
-----------------------------------

Searching for device named "Pixl"
Found "Pixl.js c734" ("fa:ee:05:a7:c7:34")
Connecting to 'fa:ee:05:a7:c7:34'
Connected
Web IDE is now available on http://localhost:8080
Web IDE Connection accepted.

>< << {"VERSION":"2v01","GIT_COMMIT":"748a4d3","BOARD":"PIXLJS","FLASH":524288,"RAM":65536,"SERIAL":"1e21d7bf-3480018d","CONSOLE":"Bluetooth","MODULES":"Flash,Storage,heatshrink,fs,net,dgram,http,NetworkJS,WIZnet,crypto,neopixel,graphical_menu","EXPTR":536882356} >> >
>

Posted at 2019-05-03 by netmonk

thank you @gfwilliams :)

Posted at 2019-05-03 by @gfwilliams

That's great! Glad you got something working!

I'd still be interested to know why it doesn't work for you with Chrome though, if you ever find it out.

Posted at 2019-05-04 by netmonk

Well, i try using my little laptop, still on ubuntu 19.04, and while i didnt face same issue, i still encounter new one :

Loaded code from storage.
Handling URL "https://www.espruino.com/ide/"
Couldn't connect to wss://localhost:31234 - disabling websockets for this session
ERROR: getURL("/serial/ports") error : Not Found
/serial/ports doesn't exist - disabling WebSocket support
ERROR: serial_frame: getPorts timeout, disabling
>>> Connecting...
Set Slow Write = true
serviceworker> active
BT> ERROR: NotFoundError: User cancelled the requestDevice() chooser.
ERROR: [notify_error] Connection Failed.
>>> Connection Failed.
>>> Connecting...
Set Slow Write = true
>>> Connecting to Pixl.js c734
BT>  Device Name:       Pixl.js c734
BT>  Device ID:         MckzoCJ/zg3Wdi0vtHM5mg==
BT> ERROR: NetworkError: Connection failed for unknown reason.
ERROR: [notify_error] Connection Failed.
>>> Connection Failed.

Posted at 2019-05-04 by netmonk

I added -E to bluetoothd command to enable experimental mode:

Loaded code from storage.
serviceworker> active
Handling URL "https://www.espruino.com/ide/"
Couldn't connect to wss://localhost:31234 - disabling websockets for this session
ERROR: getURL("/serial/ports") error : Not Found
/serial/ports doesn't exist - disabling WebSocket support
ERROR: serial_frame: getPorts timeout, disabling
>>> Connecting...
Set Slow Write = true
>>> Connecting to Pixl.js c734
BT>  Device Name:       Pixl.js c734
BT>  Device ID:         MckzoCJ/zg3Wdi0vtHM5mg==
>>> Connected to BLE
BT> Connected
BT> Disconnected (gattserverdisconnected)
ERROR: [notify_error] Connection Failed.
>>> Connection Failed.
BT> ERROR: NetworkError: GATT Server is disconnected. Cannot retrieve services. (Re)connect first with `device.gatt.connect`.

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Ubuntu chromium and web ide #6150

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