sffs

Simple Fault-tolerant File System, version 1

This tiny filesystem was designed to be the most safe in the world of SPI flash filesystems. Writing into such flash splitted into single-byte commands and could be interrupted by power failure or crash and therefore corrupt your data. Sffs finalizes metadata with one-bit switch and won't lose anything.

Also this filesystem will protect you from flash wearing. It saves timestamps of writes and always rotate files around the flash, so you never got the same file written again and again on the same place.

This was quite an interesting experience and I hope you'll find it useful.