@mfalkvidd I already found a similar library - but cannot find it again. My thoughts were that a full filesystem is really too much overhead for just storing some configuration bytes. But the more I think about it, the more I like the idea. Flash is really cheap and with 8Mbit it would be enought - also for wear leveling. The first 2Mbits are reserved for OTA downloads and the rest is formatted with the filesystem. A application could reuse it for data logging or something like this..
I already tried to implement it. But spiffs is not a out of the box library and I'm not quite sure how this hardware specific should be integrated to MySensors..
I also found this for the spark core: https://github.com/m-mcgowan/spark-flashee-eeprom
