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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
actually the st7789 has read functionality, at least with SPI it worked for me some time ago on P8 watch, when checking datasheet (e.g. https://www.crystalfontz.com/controllers/Sitronix/ST7789V/ ) there are timing diagrams of both write and read operations also for the 8bit mode - page 52. Can be tricky and may not be worth it for getPixel due to speed (or maybe yes) but for making screenshot it could be used. Or is there some unidirectional level shifter/buffer between nrf52 gpio and lcd so that those 8 data pins cannot be switched from output to input temporarily?
EDIT: oh maybe the RDX pin is not available. The diagram shows while writing you toggle WRX pin (which may be the the pin_sck in BANGLEJS.py)but there is also separate RDX pin to allow reading and that one may not be connected :-(