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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.
@fanoush
Also this was first meant as quick prototype to try various methods of sending data quickly, I am a bit surprised it can be probably used as standalone driver as is. But of course proper way is to merge it with driver code https://github.com/espruino/Espruino/blob/master/libs/graphics/lcd_st7789_8bit.c and possibly just change macros/methods here to put same data into some buffer and trigger DMA when buffer is filled istead of using 8bit mode.