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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.
@Gordon
As far as I can tell, the chip doesn't read the SD card itself - that'd be up to Espruino... So a good start would be to use the info here to try and wire the SD card up and get it working.
After that, it'd be best to try and reproduce Adafruit's library in Espruino. You can pretty much replace the
spiwritefunction withspi.writeand you're good to go.It could be a bit of a slog though - it'd be worth trying to implement something like the
sineTestfunction first...