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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
I've just filed a bug on GitHub for this: https://github.com/espruino/Espruino/issues/1654
When doing RX and TX, only the last character seems to get output correctly - which feels like a bug to me.