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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
Strange - it shouldn't have caused a problem - IRQs are always enabled during SPI send, and I only changed the code that I'd mentioned above.
Thanks for letting me know about filesystem though - that should have been compiled in :(
Is it possible it could still have been some power fluctuation issue?