Comments on: Arduino IDE 2: Install ESP8266 NodeMCU LittleFS Uploader (Upload Files to the Filesystem)

By: Sara Santos

Sara Santos — Mon, 27 Oct 2025 14:59:57 +0000

In reply to Uwe.

Hi.
Thank you.
There was probably an issue with the uploader plugin previous version.
Hopefully, it is fully fixed now.
Regards,
Sara

By: Uwe

Uwe — Fri, 24 Oct 2025 12:25:00 +0000

Hi,
Since last night, there is a new version on git. It works fine.
https://github.com/earlephilhower/arduino-littlefs-upload/releases/tag/1.5.5-
arduino-littlefs-upload-1.5.5.vsix
BR
Uwe

By: uwe

uwe — Thu, 23 Oct 2025 20:05:43 +0000

Hi Sahra,
Exactly the same problem like walter:
…Hi Sara. Yes, the file names are exactly the same. I have also written test sketches to display a directory listing. I can see files that I created using a sketch, but not any of the files that were uploaded to the file system. It’s as if the files uploaded by CTRL-SHFT-P are stored in a different area than files that I create within a sketch.
What’s very strange is that LittleFS and the upload used to work 100%. Now everything isn’t working as expected. That is, pressing Ctrl+Shift+P starts the upload with confirmation of the checksum.
But loading from the FS doesn’t work. The sketch tries to access the file and it says “File not found.”

I’ve already reinstalled the IDE: no change.
Interestingly, I’ve been using LittleFS since August, and now it’s no longer working. The IDE just updated the boards. I rolled back to 3.0, and there was no change.

I’m out of ideas 🙁

By: Sara Santos

Sara Santos — Thu, 23 Oct 2025 10:28:25 +0000

In reply to Uwe.

Hi.
Can you describe what happens exactly?
Regards,
Sara

By: Uwe

Uwe — Wed, 22 Oct 2025 20:07:15 +0000

Hi Sara, high Walter,
I have the same problem. Some days bevore it has worked very fine. No problems. But now nothing. I have tryed differend kind off boards.
Uwe

By: Walter

Walter — Tue, 14 Oct 2025 04:16:31 +0000

In reply to Sara Santos. Hi Sara. Yes, the file names are exactly the same. I have also written test sketches to display a directory listing. I can see files that I created using a sketch, but not any of the files that were uploaded to the file system. It's as if the files uploaded by CTRL-SHFT-P are stored in a different area than files that I create within a sketch.

By: Sara Santos

Sara Santos — Mon, 13 Oct 2025 09:57:22 +0000

In reply to Walter.

Hi again.
Are you sure the file you’re uploading has the exact same name of the file you’re trying to read? Including the same extension?

Regards,
Sara

By: Walter

Walter — Sat, 11 Oct 2025 15:39:42 +0000

In reply to Sara Santos. The "Erase Flash" option is set to "only sketch".

By: Sara Santos

Sara Santos — Sat, 11 Oct 2025 09:24:41 +0000

In reply to Walter.

Hi.
Check in your Arduino IDE, if you have the following option:
Tools > Erase Flash
Check which option you have selected. It may be deleting the files after uploading the code.
Regards,
Sara

By: Walter

Walter — Sat, 11 Oct 2025 04:37:23 +0000

Hello. This tutorial (and all tutorials) on Random Nerd are clear and well-written. However, I have been struggling with being able to “see” the data files that I upload. I am using Arduino 2.3.6, with a NodeMCU 1.0. I have the “arduino-littlefs-upload-1.5.4.vsix” plugin installed in the “plugins” folder under “.arduinoIDE”. When the IDE is running, and I have the correct board and port selected, I can do the CTRL-SHFT-P, and I see the file upload command. I run the upload command, and it appears to work. I see that it sees the files I have in the “data” folder in the sketch folder. The FS writing starts at location 0x00200000, and appears to complete successfully. I then upload the sample sketch that you included in this tutorial. However, when I go to the Serial Monitor and reset the NodeMCU, I see the serial output saying “Failed to open file for reading”. The LittleFS file system seems to load okay, but it does not see the files that were pre-loaded by the CTRL-SHFT-P.

The thing is, I can have a sketch create files and add text to them and show directories of the files I have created. Those files that I create in a sketch persist after a reset, and I can access them and add text to the files and they get bigger, just as expected. But, I simply cannot see or manipulate any files that I upload using CTRL-SHFT-P. Somehow, my sketches (and the sample in your tutorial) cannot see those pre-loaded files.

There must be some simple thing I am doing wrong. Are there programming settings in the IDE that need to be changed?