ERROR: No port specified, check IDE menus. - although serial monitor connects successfully

[slowjoe007]

Hi @earlephilhower, thank you for the work on this plugin. I did use it successfully before. Currently, however, I am facing issues connecting to the board. The error message does not give me a clue.

LittleFS Filesystem Uploader

ERROR: No port specified, check IDE menus.

The port (COM7) is specified in "Tools > Port" in the Arduino IDE. And in fact Serial Monitor can connect and display messages successfully. (For the upload attempts I detached the Serial Monitor as I read it cannot be used concurrently.) This should show that the port is specified correctly and works.

What else could be checked? Which (other) IDE menu might be referred to by the error message? Maybe the error message can be enhanced.

Thank you in advance for your assistance.
-slowjoe

---

Environment:

• Windows 10
• Arduino IDE
  • Version: 2.2.1
  • Date: 2023-08-31T14:35:44.802Z
  • CLI Version: 0.34.0
• Board: LOLIN(WEMOS) D1 mini (clone)

[boomsya]

the same problem. Helps only restart IDE and try again

[dacarson]

I see this occasionally too. It happens when I have two IDE windows open and I am switching between the two. For some reason, the IDE stops sharing the port with the extension.
When this happens, I need to close all IDE windows, and open the only one I want to do the upload with. Then it works.

[bastianrickmannACN]

why would this be closed as an issue, when this is clearly a bug which isn't fixed? I mean at least the error would need to be catched correctly and then tell the actual issue.

[Oleks0ir]

Same here. Now I needed to reload my whole PC for it to finally work, as the bug was still present even after reinstalling LittleFS

[1e1]

Still there on LittleFS Filesystem Uploader v1.3.0 and Arduino IDE 2.3.3
Restarting the IDE worked for a while.
Now, even restarting the computer does not work.

[sanjazahn]

You have to close monitor

[Vinay0827]

I'm also facing the same problem with the Windows system but it's working fine in my Ubuntu system what should I do

[cacaodev]

Same here with macos 15.4.1, Arduino IDE 2.3.5 and Serial Monitor closed.