Long shot… I’m doing a game targated for for the attiny-arcade (also uses SSD1306), with a view to using an Arduboy as an intermediary pletform for testing etc. Anyway, one thing that would help would be being able to read bytes from the SSD1306 instead of just writing them… the data sheet says this is possible in theory, although maybe not in serial mode… I was just wondering if anybody has tried doing this on Arduboy, or if it’s just not physically possible. (reason for trying this is that the attiny85 only has 512 bytes RAM, so screen buffering is a no-no).
(also, attiny-arcade uses I2C instead of SPI for comms if that matters)
I might try it anyway, but don’t have much hope just now.