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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.
mrQ
Hi - which device are you looking at using this on?
I think realistically having async SPI is some way down the priority list because of the complexity of handling DMA on all the different platforms Espruino is supported for, but yes - it would be a really big help in cases like these.