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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.
@Urri
The speed is actually high. I use STemWin (Segger's emWin sublicensed to ST - free for all STM32 users) and it's internal benchmark
Sorry. I messed with numbers. Earlier I wrote it was 8MB/s. Actually it's 8 megepixels/s (and each pixel is 16bit)
So:
for 16 bit parallel inferface it's 8 megapixels/s
for 8 bit parallel inferface it's 4 megapixels/s
for SPI inferface it's 1 megapixels/s
You choose :)