Select A Serial Port doesn't work

[ryancor]

Issue Type: Bug

Im on Mac, and everytime i try to select a serial port at the bottom, nothing shows up.

Extension version: 0.2.27
VS Code version: Code 1.40.0 (86405ea23e3937316009fc27c9361deee66ffbf5, 2019-11-06T17:09:34.601Z)
OS version: Darwin x64 18.7.0

System Info

Item	Value
CPUs	Intel(R) Core(TM) i7-4870HQ CPU @ 2.50GHz (8 x 2500)
GPU Status	2d_canvas: enabled flash_3d: enabled flash_stage3d: enabled flash_stage3d_baseline: enabled gpu_compositing: enabled metal: disabled_off multiple_raster_threads: enabled_on oop_rasterization: disabled_off protected_video_decode: unavailable_off rasterization: enabled skia_renderer: disabled_off surface_control: disabled_off surface_synchronization: enabled_on video_decode: enabled viz_display_compositor: enabled_on viz_hit_test_surface_layer: disabled_off webgl: enabled webgl2: enabled
Load (avg)	2, 2, 2
Memory (System)	16.00GB (7.83GB free)
Process Argv	-psn_0_7046840
Screen Reader	no
VM	0%

[AldebaranPrimo]

The same thing happens in windows

Extension version: 0.2.27
VS Code version: Code 1.40.0
OS version: Windows 10 pro 1903 (build 19018.1)

[acrandal]

I have the same thing on a Linux Mint (Debian/Ubuntu) system. The ArduinoIDE packages work, but VS Code doesn't let me select a serial port. This seems to be the same thing as issues #596, #664 , #816, and/or #851. The release of 0.2.27 fixed this problem for some people, but not everyone, it seems.

If I edit the .vscode/arduino.json file directly and add the line for the serial port path in my case to:
"port": "/dev/ttyUSB0",

The VS Code interface picks up the configuration change and can program the Arduino Uno. When I try to bring up the serial console I get:

"Failed to open serial port COM6 due to error: + TypeError: Cannot read property 'close' of null"

vscode-arduino version: 0.2.27
vscode version: 1.40.0
Electron: 6.1.2
Chrome: 76.0.3809.146
Node.js: 12.4.0
V8: 7.6.303.31-electron.0
OS: Linux x64 4.15.0-65-generic

I have read/write perms on the serial port and can run other tools without priv escalation to read/write just fine.

To sum up:

• The "Select Serial Port" button and menu option don't bring up a menu.
• Setting the serial port in the json file manually allows programming, but not use of the serial console.

[smarpug]

I am having this problem as well on Windows Version 10.0.18362 Build 18362.
vscode-arduino version: 0.2.27
vscode version: 1.40.0

I can interact with the serial device via PuTTY, and I can also set the COM port in the arduino.json, but the button at the bottom right and the Command Palette command both do nothing as far as the UI is concerned.

[stevenjoezhang]

Same issue here - Nothing shows up after clicking the <Select Serial Port> button.

vscode-arduino version: 0.2.27
vscode version: 1.40.0
OS version: Darwin x64 19.0.0 (macOS Catalina 10.15.1)

[ThomasOdegard]

Same issue.
Arduino ext.version: 0.2.27
VScode version: 1.40.0
Electron: 6.1.2
Chrome: 76.0.3809.146
Node.js: 12.4.0
V8: 7.6.303.31-electron.0
OS: Win10

arduino.log showing:

{"correlationId":"4e71062607b3432184bf6cdd6cec17b6","command":"arduino.selectSerialPort","message":"error","errorLine":"\tat Object. (c:/users/..../.vscode/extensions/vsciot-vscode.vscode-arduino-0.2.27/vendor/node-usb-native/lib/bindings.js:27:19)","telemetry":true,"level":"error","timestamp":"2019-11-12T08:41:12.402Z"}

{"notification":"Failed to open serial port COM31 due to error: + TypeError: Cannot read property 'close' of null","showUser":true,"telemetry":true,"message":"error","errorLine":"\tat Object. (c:/Users/..../.vscode/extensions/vsciot-vscode.vscode-arduino-0.2.27/vendor/node-usb-native/lib/bindings.js:27:19)","level":"warn","timestamp":"2019-11-12T09:36:44.125Z"}

[Dhdrummer]

I have the same issue, clicking on a COM port name in status bar does nothing.

[jrlanglois]

My set up is as follows:

Extension version: 0.2.27
VS Code version: Code 1.40.0 (86405ea23e3937316009fc27c9361deee66ffbf5, 2019-11-06T17:02:13.381Z)
OS version: Windows_NT x64 10.0.18362
Arduino IDE: 1.8.10

[jrlanglois]

Quick update: testing out vscode 1.39.2 (instead of the latest, 1.40.0) and the COM port selection works just fine.

[acrandal]

I can confirm @jrlanglois finding that vscode 1.39.2 has a working serial port selection.

Version: 1.39.2
Commit: 6ab598523be7a800d7f3eb4d92d7ab9a66069390
Date: 2019-10-15T15:33:40.634Z
Electron: 4.2.10
Chrome: 69.0.3497.128
Node.js: 10.11.0
V8: 6.9.427.31-electron.0
OS: Linux x64 4.15.0-66-generic

Arduino IDE: 1.8.9

[dooriya]

Duplicated with #918 #927 due to VSCode engine bumped to 1.40 with Electron 6.0 update.

[dooriya]

We're currently working on a new release containing the fix to this issue, will update you once we release is go public.

[dooriya]

The serial port issue has been fixed in the latest Arduino extension release (0.2.28).
Please install the latest Arduino 0.2.28 from marketplace https://marketplace.visualstudio.com/items?itemName=vsciot-vscode.vscode-arduino to verify if this is resolved on your environment.

[MikeX7]

It fixed the issue for me

[acrandal]

It seems to have worked me for my systems as well.

@dooriya and team:
Thank you so much, devs! Having VS Code for Arduino work is a great tool.

[smarpug]

Excellent. This solved the issue on my environment (summarized in previous comment).

[jrlanglois]

+1, v0.2.28 fixes the issue for me. Thanks!

[dooriya]

Thanks you all for the feedback,
Since this issue is resolved in the latest 0.2.28 release, I gonna to close it here.

[Christian1984]

Unfortuanately, I still encounter the issue described above. I'm on:

Mac OSX 10.14.6
Arduino IDE 1.8.11
VSCode 1.43.0
Arduino-Extension 0.2.29

Going through the command palette didn't work either. After setting the port manually through arduino.json upload worked, but serial monitor still does not.

[smarpug]

This issue was fixed earlier, but it has re-appeared for me as well.
Windows Version 10 Build 19041.113
vscode-arduino version: 0.2.29
vscode version: 1.43.0

[smarpug]

I can also set the port manually through arduino.json without any problem, but serial monitor does not work.

[antonu17]

Same here.
Can't select serial port via menu. If configure port via arduino.json - upload works.
MacOS 10.15.3 (19D76)
VSCode 1.43.0 (Electron: 7.1.11, V8: 7.8.279.23-electron.0)
vscode-arduino 0.2.29

When I open serial monitor, I see the error: "Failed to open serial port /dev/cu.usbmodem14301 due to error: + TypeError: Cannot read property 'close' of null"

[rafaellucas3]

After the update I can't select a new COM port or user the serial terminal.

Version: 1.43.0 (user setup)
Commit: 78a4c91400152c0f27ba4d363eb56d2835f9903a
Date: 2020-03-09T19:47:57.235Z
Electron: 7.1.11
Chrome: 78.0.3904.130
Node.js: 12.8.1
V8: 7.8.279.23-electron.0
OS: Windows_NT x64 10.0.18363

[cyberflying]

select serial port does not work.
Arduino: 0.2.29
Version: 1.43.0 (user setup)
Commit: 78a4c91400152c0f27ba4d363eb56d2835f9903a
Date: 2020-03-09T19:47:57.235Z
Electron: 7.1.11
Chrome: 78.0.3904.130
Node.js: 12.8.1
V8: 7.8.279.23-electron.0
OS: Windows_NT x64 10.0.18363

I rollback code to version 1.42.1 it works.
Version: 1.42.1 (system setup)
Commit: c47d83b293181d9be64f27ff093689e8e7aed054
Date: 2020-02-11T14:45:59.656Z
Electron: 6.1.6
Chrome: 76.0.3809.146
Node.js: 12.4.0
V8: 7.6.303.31-electron.0
OS: Windows_NT x64 10.0.18363

[jacques42]

I can confirm same problem here. I manually added the serial port to arduino.json

"port": "COM4"

and that fixed the upload, yet the serial monitor still does not work. Error message for serial monitor is

Failed to open serial port COM4 due to error: + TypeError: Cannot read property 'close' of null. Source: Arduino (Extension)

Rollback to Visual Studio Code 1.42.1 works nicely for me.

[simonl65]

As a workaround:

1. open the folder where your .ino file resides
2. open the .vscode folder
3. edit arduino.json
4. change the port
   e.g.

{
  "port":"COM4"
}

[simonl65]

Still a problem in 1.49.1 👎 (

[JanGieseler]

Same issue here:

Version: 1.49.1 (user setup)
Commit: 58bb7b2331731bf72587010e943852e13e6fd3cf
Date: 2020-09-16T23:27:51.792Z
Electron: 9.2.1
Chrome: 83.0.4103.122
Node.js: 12.14.1
V8: 8.3.110.13-electron.0
OS: Windows_NT x64 10.0.18362

[chrs4711]

Can confirm, also not working on linux

Version: 1.49.1
Commit: 58bb7b2331731bf72587010e943852e13e6fd3cf
Date: 2020-09-16T23:23:33.049Z
Electron: 9.2.1
Chrome: 83.0.4103.122
Node.js: 12.14.1
V8: 8.3.110.13-electron.0
OS: Linux x64 5.4.0-48-generic

[ATHONOR-electronics]

Just downloaded VS Code / Arduino extension on Windows 10, same issue. Tried reverting the extension back to 3.0 (from 3.2) made no difference. Also uninstalled/reinstalled extension.

Version: 1.49.2 (user setup)
Commit: e5e9e69aed6e1984f7499b7af85b3d05f9a6883a
Date: 2020-09-24T16:29:41.983Z
Electron: 9.2.1
Chrome: 83.0.4103.122
Node.js: 12.14.1
V8: 8.3.110.13-electron.0
OS: Windows_NT x64 10.0.19041

[darcynog]

This is how I SOLVED this problem in my Ubuntu machine:

1)In the settings.json file (reacheable through File / Preferences / Settings and then the Workspace Settings tab)
disabled the option “arduino.enableUSBDetection” setting it to false. (“arduino.enableUSBDetection” : false. )

2)Then in the file arduino.json manually specified the device name for the USB connection in my machine:
"port": "/dev/ttyACM0".

Now I can upload sketches to the Arduino board.

I had this idea while reading https://medium.com/home-wireless/use-visual-studio-code-for-arduino-2d0cf4c1760b

[Roberto6969]

It seems good idea. But as long I have tested on windows machine, using COMx port syntax, it doesn't work

[XinyuWuu]

Seem it is a problem about nodejs
microsoft/vscode#106500

[fidelbrea]

Downgrade. This is a solution. I fixed it by downgrading up to 1.48.2.
I hope you find this useful to fix your own situations.

[DerekFoster1976]

Downgrading from 1.49 to 1.48.2 works for me to, I wish they would get a handle on this issue as it has happened quite a few times now.

[DerekFoster1976]

I now have another issue. I use an MXChip which has fully supported debugging with the extension. However, when I just have the .ino file open in the workspace (no other files open) and try to debug by run>Start Debugging it does not list the Arduino environment (see screenshot1), When I open an additional file such as the settings.json file the full list of environment options is shown when I do Run>Start Debugging (screenshot2).

[simonl65]

@DerekFoster1976 It might be better to open that as a new issue - it's unlikely to get noticed in this closed issue :-(

[Antiquary1820]

This is how I SOLVED this problem in my Ubuntu machine:

1)In the settings.json file (reacheable through File / Preferences / Settings and then the Workspace Settings tab)
disabled the option “arduino.enableUSBDetection” setting it to false. (“arduino.enableUSBDetection” : false. )

2)Then in the file arduino.json manually specified the device name for the USB connection in my machine:
"port": "/dev/ttyACM0".

Now I can upload sketches to the Arduino board.

I had this idea while reading https://medium.com/home-wireless/use-visual-studio-code-for-arduino-2d0cf4c1760b

This worked for me too - thanks so much darcynog - this old guy appreciates your help

[Yogsther]

This is how I SOLVED this problem in my Ubuntu machine:

1)In the settings.json file (reacheable through File / Preferences / Settings and then the Workspace Settings tab)
disabled the option “arduino.enableUSBDetection” setting it to false. (“arduino.enableUSBDetection” : false. )

2)Then in the file arduino.json manually specified the device name for the USB connection in my machine:
"port": "/dev/ttyACM0".

Now I can upload sketches to the Arduino board.

I had this idea while reading https://medium.com/home-wireless/use-visual-studio-code-for-arduino-2d0cf4c1760b

Fixed it on windows aswell.

[FaimMedia]

Having the same issue, adding the device manually to the arduino.json file fixes the upload for me. However serial monitor doesn't work anymore.

OS version: macOS 10.15.5
VSCode: 1.50.1
Arduino extension: v0.3.2

When I try to open the serial monitor, I get the following error. There seems to be some sort of mismatch with Node.js versioning:

Failed to open serial port /dev/tty.usbmodem143101 due to error: + Error:
The module '/Users/Tim/.vscode/extensions/vsciot-vscode.vscode-arduino-0.3.2/out/node_modules/usb-detection/build/Release/detection.node' was compiled against a different Node.js version using NODE_MODULE_VERSION 75. 
This version of Node.js requires NODE_MODULE_VERSION 80.
Please try re-compiling or re-installing the module (for instance, using `npm rebuild` or `npm install`).

[Augustinio]

same issue over here:
OS 10.15.7
VSCode 1.50.1
Arduino extension v0.3.2

Nothing happens when clicking on select serial port

[henniespies]

same issue here
Version: 1.50.1 (user setup)
Commit: d2e414d9e4239a252d1ab117bd7067f125afd80a
Date: 2020-10-13T15:06:15.712Z
Electron: 9.2.1
Chrome: 83.0.4103.122
Node.js: 12.14.1
V8: 8.3.110.13-electron.0
OS: Windows_NT x64 10.0.19041
Arduino Extension: v0.3.2

[Xingqishiyi]

OS Windows 7 SP1
VSCode: 1.50.1
Arduino extension: v0.3.2

Initially, nothing happens when clicking on select serial port.
I then switched to Arduino IDE and built my project there.
When I returned to Visual Studio Code, it all worked.
I was able to choose serial port and upload.
Could not line out exactly all of the steps, but now have VS Code working properly without any changes to the versions.

Hope this helps...

[FrankLaterza]

I'm on windows 10 and it started happening out of nowhere. This is happening on both of my computers. I tied installing the new Arduino update, but nothing.

[simonl65]

I gave up and installed PlatformIO instead - it's been rock-solid for me ;-)

[smarpug]

This is the third time that this feature has broken in the time I've been using it. Microsoft needs to add a test to catch this better when new versions of VSCode, Arduino extension, or Windows 10 are released.

[adiazulay]

This issue is fixed in v0.3.5, you can install it using the .vsix file in the repo. See #1198 for more details.