@avanc, have a look at conversation about Interfacing - Writing and Reading 'persistent' data using FlashEEPROM (journaling) module. It may answer some of your questions and marvels...
@allObjects started
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@avanc, have a look at conversation about Interfacing -
Writing and Reading 'persistent' data using FlashEEPROM (journaling) module. It may answer some of your questions and marvels...