I'll try this later, thanks.
But won't work with an ESP32. I'll change to but that's a detail.
On the other hand, I'm more worried about the RAM taken up: about 50 kB for the whole CSV

I prefer not to save the data permanently but to transmit it either for downloading or for display (using chart.js for example).

If you are just sending a file from the flash

Thanks but... datas are in RAM : I have a array to store them :

I have an ESP32 with an ESPAsyncWebServer which records data in a table (3600 rows maximum)

How do I get the web server to send the data as a CSV file to the browser?
Thanks in advance

Hello,
I have a project to build a system with 4 force sensors and HX711 modules. I'm looking for an ESP32 that will allow me to :

retransmit the instantaneous values via a web interface through wifi
records a hundred values for each sensor every 0.1 s
retrieve the values via the same web ...

In 1.8, place the jar file in ~/Arduino/tools/ESP32FS/tool.

That's fine ! Thanks a lot... I'll be back for further questions

Hello,
I am trying to use littleFS with a web server on ESP32.

It is an ESP32-S3-WROOM from freenove, the dev computer is a linux debian 11, IDE 1.8.13 and 2.1.0

The example provided with the littleFS library works, that's something. In comment of the example there is :

/* You only need to ...