does anyone know hot to print mirrored text with Adafruit SSD1306 on an OLED?
Doesn't seem to be built-in to the library. The invertDisplay() function flips black for white, not left for right.
I'd modify the library to accept a negative text size parameter in drawChar(). The function will only require the tiniest modification to only flip left-right when it draws each character. Note drawChar() is actually in the GFX helper library.