Davide Gironi writes:
This library implements an SD card Data Logger that runs on ATmega.
It has a small footprint, so it can be loaded on an ATmega8, leaving space for user code.
It supports SD and microSD cards formatted with FAT16.
It also features log rotation.
The “Petit FAT File System Module” by ChaN it is used to write on SD card. I’ve used the Petit library because i would like to build a small footprint logger. Even if it has a few limitations, those can be circumvented.