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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.
@Wilberforce
The wifi lbrary
wifi.save()saves EESID and password for you already!So it might just be the 16 bit counter...
the Flasheprom module stores with indexes, it might be over complicated for your needs - the flash module might be enough!