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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
No problem - actually Ruuvi were really good, and have paid me to port Espruino over and to keep producing binaries for them (1v92 will be in the Espruino binary zip file)
Unfortunately it's a tricky one - the LEDs and Buttons on Ruuvitag really are upside-down. I'm afraid there's no obvious fix, since in Espruino LED1 refers to the actual pin on the chip - so if you write 1 to it, it outputs 1. Changing that would require some pretty far-reaching modifications.
I'd have to add code to optionally invert specific pins, which would probably end up being really confusing if you tried to access the pin directly, and would definitely slow things down. I think for now that's just something you'll have to live with.