unable to open serial port

[jilouchu]

Issue Type: Bug

Failed to open serial port COM3 due to error: + Error: \?\c:\Users\louis.vscode\extensions\vsciot-vscode.vscode-arduino-0.3.1\out\node_modules\usb-detection\build\Release\detection.node is not a valid Win32 application. \?\c:\Users\louis.vscode\extensions\vsciot-vscode.vscode-arduino-0.3.1\out\node_modules\usb-detection\build\Release\detection.node

Extension version: 0.3.1
VS Code version: Code 1.49.1 (58bb7b2331731bf72587010e943852e13e6fd3cf, 2020-09-16T23:27:51.792Z)
OS version: Windows_NT x64 10.0.18363

System Info

Item	Value
CPUs	Intel(R) Core(TM) i5-8265U CPU @ 1.60GHz (8 x 1800)
GPU Status	2d_canvas: enabled flash_3d: enabled flash_stage3d: enabled flash_stage3d_baseline: enabled gpu_compositing: enabled multiple_raster_threads: enabled_on oop_rasterization: disabled_off opengl: enabled_on protected_video_decode: enabled rasterization: enabled skia_renderer: disabled_off_ok video_decode: enabled vulkan: disabled_off webgl: enabled webgl2: enabled
Load (avg)	undefined
Memory (System)	7.85GB (3.17GB free)
Process Argv	--crash-reporter-id b210f538-01a7-4912-9ec6-45c7a3b21307
Screen Reader	no
VM	0%

[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"
}

[Roberto6969]

Thank you for your advice but this is not a solution. It doesn't resolve the problem. You can set COM port manually but if VSC can't open serial port, manual setting is of no use.

[iqapps]

Me same problem. Node.js version is wrong...

Downgrading to 0.30 restores expected function. (Damn, not anymore, now its completely useless.)

[koderian]

Same problem, it says

Failed to open serial port COM4 due to error: + Error: The module '\\?\c:\Users\my username\.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 rebuildornpm install).

I don't think it did this before.

[sukesh-ak]

hi @dilin-MS
Is there someone looking into this show-stopper bug?
This not just fails but takes almost 5mins to go to the next step to compile/flash from below line of error.

2020-09-23T18:23:52.091Z INFO c.a.u.n.HttpConnectionManager:153 [cc.arduino.packages.discoverers.serial.SerialDiscovery] Connect to https://builder.arduino.cc/builder/v1/boards/0x10C4/0xEA60, method=GET, request id=03AEDFE99CC94B99
2020-09-23T18:23:53.557Z INFO c.a.u.n.HttpConnectionManager:157 [cc.arduino.packages.discoverers.serial.SerialDiscovery] Request complete URL="https://builder.arduino.cc/builder/v1/boards/0x10C4/0xEA60", method=GET, response code=404, request id=03AEDFE99CC94B99, headers={null=[HTTP/1.1 404 Not Found], Cache-Control=[no-cache, no-store, must-revalidate], Server=[nginx], Connection=[keep-alive], Vary=[Origin], Pragma=[no-cache], Expires=[0], Content-Length=[0], Date=[Wed, 23 Sep 2020 18:23:54 GMT]}
2020-09-23T18:23:53.558Z WARN p.a.h.BoardCloudResolver:64 [cc.arduino.packages.discoverers.serial.SerialDiscovery] Fail to get the Vid Pid information from the builder response code=404

Not sure why its trying to "SerialDiscovery" when serial is already mentioned in arduino.json
If not its time to ditch this extension and move to PlatformIO again.

[dilin-MS]

Hi @sukesh-ak , the failure of device discovery is due to VS Code's latest version 1.49.1 upgrades the Electron version to v9, causing the serialport function failure. Refer to #1097 for details.
Currently @robotdad is help looking into the issue.

A Workaround is to downgrade the VS Code to a version which Electron version lower than v9. The issue will be fixed once the related serialport libraries upgrade to use Electron v9. Thank you.

[alfoquial]

Hi
I've the same problem.
Fedora 32
vscode 1.49.1
electron 9.2.1
node.js 12.41.1
arduino extension 0.3.2

I can upload the scketch to board adding to the arduino.json: "port": "/dev/ttyACM0" but I can't monitor the output in the serial monitor

Failed to open serial port /dev/ttyACM0 due to error: + Error: The module '/home/alfonso/.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 67. 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).

[sukesh-ak]

Hi @sukesh-ak , the failure of device discovery is due to VS Code's latest version 1.49.1 upgrades the Electron version to v9, causing the serialport function failure. Refer to #1097 for details.
Currently @robotdad is help looking into the issue.

A Workaround is to downgrade the VS Code to a version which Electron version lower than v9. The issue will be fixed once the related serialport libraries upgrade to use Electron v9. Thank you.

Thank you @dilin-MS for the response.
Although the serial monitor issue is fixed after reverting to VS Code version v1_48 the error I mentioned and failure plus delay in next steps still exist.

2020-09-23T18:23:52.091Z INFO c.a.u.n.HttpConnectionManager:153 [cc.arduino.packages.discoverers.serial.SerialDiscovery] Connect to https://builder.arduino.cc/builder/v1/boards/0x10C4/0xEA60, method=GET, request id=03AEDFE99CC94B99
2020-09-23T18:23:53.557Z INFO c.a.u.n.HttpConnectionManager:157 [cc.arduino.packages.discoverers.serial.SerialDiscovery] Request complete URL="https://builder.arduino.cc/builder/v1/boards/0x10C4/0xEA60", method=GET, response code=404, request id=03AEDFE99CC94B99, headers={null=[HTTP/1.1 404 Not Found], Cache-Control=[no-cache, no-store, must-revalidate], Server=[nginx], Connection=[keep-alive], Vary=[Origin], Pragma=[no-cache], Expires=[0], Content-Length=[0], Date=[Wed, 23 Sep 2020 18:23:54 GMT]}
2020-09-23T18:23:53.558Z WARN p.a.h.BoardCloudResolver:64 [cc.arduino.packages.discoverers.serial.SerialDiscovery] Fail to get the Vid Pid information from the builder response code=404

@robotdad Can you suggest anything to get this fixed?

[sukesh-ak]

Hi
I've the same problem.
Fedora 32
vscode 1.49.1
electron 9.2.1
node.js 12.41.1
arduino extension 0.3.2

I can upload the scketch to board adding to the arduino.json: "port": "/dev/ttyACM0" but I can't monitor the output in the serial monitor

Failed to open serial port /dev/ttyACM0 due to error: + Error: The module '/home/alfonso/.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 67. 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).

Switch to VS Code 1.48 and see if it gets fixed. At least that issue is fixed after I down graded to 1.48

[simonl65]

@sukesh-ak I hope the downgrade to 1.48.2 has got the serial monitor working for you - it has got mine working +1

Regarding your other error: that appears to be an issue with the arduino website - https://builder.arduino.cc/builder/v1/boards/0x10C4/0xEA60 comes back with a 404 Not Found error -1

[sukesh-ak]

@sukesh-ak I hope the downgrade to 1.48.2 has got the serial monitor working for you - it has got mine working +1

Regarding your other error: that appears to be an issue with the Arduino website - https://builder.arduino.cc/builder/v1/boards/0x10C4/0xEA60 comes back with a 404 Not Found error -1
Yes serial monitor is working now.

Where is that 404 call getting triggered (thought its part of this extension)?
This hits a delay of couple of mins before it proceeds to next step. So its still a blocker for using.
Since its working fine from Arduino IDE

[simonl65]

I have no idea where that call's being made, but I think it may be a "red herring" anyway - I've just noticed that it does the same for me!

The next step after that call appears to be the verify or compile step. For me that part takes about 15s, but I suspect it depends on the size of your code?

[simonl65]

Actually, the next step is Preparing boards...
Oops - nope, that's just before the error - my bad

[sukesh-ak]

I have no idea where that call's being made, but I think it may be a "red herring" anyway - I've just noticed that it does the same for me!

The next step after that call appears to be the verify or compile step. For me that part takes about 15s, but I suspect it depends on the size of your code?

15seconds feel like a day :)

I am guessing that's trying to automagically detect the port/board, wonder why when its already selected through this extension.
I also saw that, Arduino is moving to a new CLI option for compile/flash etc.

[simonl65]

15seconds feel like a day :)

Haha - yes it does!

[dannystaple]

It feels like this should be marked as a duplicate of 1097 - since the behaviour here leads to that when I manually specified the port. Perhaps a note at the top of 1097 to state that being unable to select a port is a symptom of the same root cause?

[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.

[scarolan]

Confirmed that the downgrade to 1.48.2 solves this issue on Windows 10. Thank you all for doing the research.

EDIT: Well, not quite. The terminal opens the serial port now but there is no output.

[Starting] Opening the serial port - COM11
[Info] Opened the serial port - COM11

When I disconnect it and open the Arduino IDE serial monitor, I see all the expected output.

[jonnytest1]

for those that dont want to downgrade :
i made a small project that uses the internal serialport package

this at least prints out the serial

• there is currently no thought out config so just edit the COM3 to your com port and the baudRate in the index.js directly -

index.js

let chars = []

const port = new serial("COM3", { baudRate: 9600 }, (e) => {
    if(e) {
        console.error(e)
    }
})
port.on('readable', function() {
    chars.push(...port.read());
    printChars();
})

function printChars() {
    const newLine = chars.indexOf(10);
    if(newLine != -1) {
        const line = chars.splice(0, newLine + 1);
        let lineStr = "";
        for(let i = 0; i < line.length - 1; i++) {
            lineStr += String.fromCharCode(line[i]);
        }
        console.log(lineStr)
        printChars();
    }

    globalThis.write = (line) => {
            port.write(line)
    }
}```


package json:

{
"name": "serialmonitor",
"dependencies": {
"@types/node": "^14.11.8",
"serialport": "^9.0.1"
}
}

• create the 2 files in the same folder
• run npm install
• open launch/debug view (ctrl shift d)
• add config to your workspace (Node JS Launch Program)
• adjust launch json like this :
  {
  "type": "node",
  "request": "launch",
  "name": "Launch Program",
  "program": "${workspaceFolder}\\index.js",
  }
• then just press f5 in the workspace

[sukesh-ak]

@jonnytest1 Can you explain a bit more on how to use this?

[jonnytest1]

@jonnytest1 Can you explain a bit more on how to use this?

i added a guide to my previous comment

[rrakso]

for those that dont want to downgrade :
i made a small project that uses the internal serialport package

this at least prints out the serial

• there is currently no thought out config so just edit the COM3 to your com port and the baudRate in the index.js directly -

index.js

let chars = []

const port = new serial("COM3", { baudRate: 9600 }, (e) => {
    if(e) {
        console.error(e)
    }
})
port.on('readable', function() {
    chars.push(...port.read());
    printChars();
})

function printChars() {
    const newLine = chars.indexOf(10);
    if(newLine != -1) {
        const line = chars.splice(0, newLine + 1);
        let lineStr = "";
        for(let i = 0; i < line.length - 1; i++) {
            lineStr += String.fromCharCode(line[i]);
        }
        console.log(lineStr)
        printChars();
    }
}```


package json:

{
"name": "serialmonitor",
"dependencies": {
"@types/node": "^14.11.8",
"serialport": "^9.0.1"
}
}

• create the 2 files in the same folder
• run npm install
• open launch/debug view (ctrl shift d)
• add config to your workspace (Node JS Launch Program)
• adjust launch json like this :
  {
  "type": "node",
  "request": "launch",
  "name": "Launch Program",
  "program": "${workspaceFolder}\index.js",
  }
• then just press f5 in the workspace

@jonnytest1 I don't want do downgrade, because all the time I have

(already reported as #1051)

and I need to upgrade (because then propably this fix #1051 as in #1050).
Could you give more info how can I fix this on my own?

[iqapps]

@rrakso thanks, and very interesting, because I didn't know how to make such handy extensions. I have to look more into this.

But this dosn't enable Arduino programming (CTRL+ALT+U) and it doesn't allow sending (CTRL+SHIFT+S) also - right ?

[jonnytest1]

@rrakso thanks, and very interesting, because I didn't know how to make such handy extensions. I have to look more into this.

But this dosn't enable Arduino programming (CTRL+ALT+U) and it doesn't allow sending (CTRL+SHIFT+S) also - right ?

this actually is not really a vscode "extension" but a small node project

and yes netiher puihsing a c program (which is already working in the extension in here)
nor sending data(which probably takes about 10 lines of cose to add tbh ) is currently supported

if sending data is a big plus for you I can look into it - shouldnt take long as its more or less just the reverse of reading

[iqapps]

It more the matter of programming the Arduino that is the problem. But thanks.

I would rather have somebody to make this problem go away, so we can have trustworthy updates on the fly.

I would help myself if I could, but VS Code coding is way out of my comfortzone.

[jonnytest1]

oh lol adding sending data was really easy :D

globalThis.write = (line) => {
port.write(line)
}

just adding these lines

and you can put
write("asf")
in the debug console and it will get forwarded to the serial port

tested with this code snippet: output changed after the write call for 3 characters

int incomingByte = 0;

void loop()
{
    Serial.println("test2");

    incomingByte = Serial.read();

    // say what you got:
    Serial.print("I received: ");
    Serial.println(incomingByte, DEC);

    delay(1000);
}

[jonnytest1]

@rrakso sorry i dont know how to "fix" the original extension (not that i didnt try :3)
the way i did it is just a workaround that reimplements the functionality in a new project

[jonnytest1]

i also noticed that unfortunately its necessary to close the serial monitor project while pushing a new program to the arduino

[marcelo-lara]

Anyway, is a patch for this issue coming in the next release?

[kseyhan]

for everyone suffering try rebuilding the plugin following the steps from my #1113 (comment).

[robotdad]

Prerelease build for the serial port issue is here: https://github.com/microsoft/vscode-arduino/releases/tag/v0.3.3-rc

I plan to publish a release with this fix tomorrow, Oct 30.

[robotdad]

Resolved in release 0.3.3

[jonnytest1]

i was wondering - was it previously possible to send data through the serialmonitor ?

[MaxBoyman]

not resolved for me @robotdad
Version: 1.51.0 (user setup)
Electron: 9.3.3
Chrome: 83.0.4103.122
Node.js: 12.14.1
V8: 8.3.110.13-electron.0
OS: Windows_NT x64 10.0.19042
and Arduino Extension V 0.3.3
The error is:
Failed to open serial port COM4 due to error: + Error: \?*****.vscode-server\extensions\vsciot-vscode.vscode-arduino-0.3.3\out\node_modules\usb-detection\build\Release\detection.node is not a valid Win32 application.
\?*******.vscode-server\extensions\vsciot-vscode.vscode-arduino-0.3.3\out\node_modules\usb-detection\build\Release\detection.node

[ryanlightbrighton]

Failed to open serial port COM3 due to error: + Error: \?\c:\Users\xxx.vscode\extensions\vsciot-vscode.vscode-arduino-0.3.4\out\node_modules\usb-detection\build\Release\detection.node is not a valid Win32 application.
\?\c:\Users\xxx.vscode\extensions\vsciot-vscode.vscode-arduino-0.3.4\out\node_modules\usb-detection\build\Release\detection.node

[adiazulay]

This is resolved in v0.3.5 see #1198 for instruction on how to install it from .vsix

[maxburow]

This is resolved in v0.3.5 see #1198 for instruction on how to install it from .vsix

+1, now it works)

[Kwieeciol]

Doesn't really work for me, freshly installed the extension, I uploaded the code (btw I couldn't select the board, the menu wouldn't just open, I needed to update the arduino.json file manually), but I cannot open the serial monitor, error message:

[DeltaC6]

I am getting the following error. I have the latest VSCode installed with the latest Arduino extension.

Failed to open serial port COM3 due to error: + Error: \\?\c:\Users\apex1\.vscode\extensions\vsciot-vscode.vscode-arduino-0.4.3\out\node_modules\usb-detection\build\Release\detection.node is not a valid Win32 application. \\?\c:\Users\apex1\.vscode\extensions\vsciot-vscode.vscode-arduino-0.4.3\out\node_modules\usb-detection\build\Release\detection.node

I tried switching to an older version of Arduino extensions but none of them is working. Haven't changed VSCode to the older version yet.

[manureichel]

I'm having the same problem with a fresh installed VScode + Arduino Extension. I have to manually edit the json file to upload the code. I can't open Serial Monitor or manually change the COM. Same problem as @DeltaC6 an @Kwieeciol. There was an update or something? This used to worked fine for me a few weeks ago.

[manureichel]

I've solved the problem by downloading Visual Studio Code Version 1.58 (June 2021) . There was something in the July 2021 update that kept Arduino extension from working. Hope this works for you guys too.