I would like to know if it is possible, and if yes how, could I write from micropython a file with telemetry data.
Just as a precision if it matters, I am using VS code with the M5 plugin to run the python code on the M5Stick-C.

I've tried the following as a test with no success.

f = open("log.txt", "w+")
f.write("Writing content from MicroPython")
f.close()

The file is created (but disappear after soft reboot) and stay empty.

My understanding is that the "flash/" folder is mounted on a FAT filesystem.
So I would assume that it is possible to write on the micro-controller memory in this space.

Thank you by advance for your support.
Regards,
Antowan