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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
This is really odd - I don't suppose you have some kind of oscilloscope you could use to check if the data is being sent?
Should be perfectly fine, and we do it all over the place in different modules.
You could give software SPI a go in case it makes a difference?