device file transfer visualizer: filename size

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LEDesign
Posts: 7
Joined: Mon Jun 15, 2020 1:13 pm

Wed Dec 10, 2025 2:39 pm

Using the device file transfer visualizer to transfer files from the PC to ESP32 using littleFS format.

From 'device files' to 'local files' the filename is identical
From 'local files' to 'device files' to filename is truncated to (?) 15 bytes ('/' + 12 bytes + '/0').

In the 'FileManagerConfiguration.h' to maximum filename length MaxFilenameLength is set to 30, changing this value or the MaxRootPath length didn't change anything.

The littleFS documentation suggests that 255 bytes should be possible (#define LFS_NAME_MAX 255).

Should it or is it possible to transfer files from the PC to flash using the device file transfer visualizer without the filename truncation?

BR, Nick.
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