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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.
@jeffmer
Having looked at the Espruino graphics C code, I can see that there is no provision for an image bit blit style callback as there is for pixels and rectangles, so I completely agree that it’s best left as it is. I am impressed that Espruino supports reasonable performance for drawImage using only Javascript.