Espruino on P8 smartwatch - ST7789 display driver in Inline C

Yes, Gordon’s createArrayBuffer and drawImage with palettes are exactly the same mechanism. Actually you can usually get away with one or two buffers and move them around to write at different times. My gpsnav app uses only one buffer which is used every 200ms to draw the compass display and once a second for numerical data display.

Combining javascript and compiled C in your driver is really neat, I was going to ask to see it!