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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.
@MarkusGritsch
I further tried the example as is (just replaced SPI2 by SPI1), and it roughly works (neglecting the first-byte delay problem), but it runs VERY slow: The LEDs are updated only every 120 ms.
Calling require("ESP8266").logDebug(false); improved it a bit but still 108 ms. Is it really supposed to run that slow?