For some reason unknown to me the ssd1306.py driver uses the display 'upside down'. Of course this arbitrary, but what I mean: rows and columns are initialised 'mirrored' in __init().

SET_SEG_REMAP | 0x01, # column addr 127 mapped to SEG0
SET_COM_OUT_DIR | 0x08, # scan from COM[N] to COM0

I would like to use this display 'upside-up', but the driver has no 'rotate' method (like I found in the sh1106 driver). For example:

def rotate(self, flag):
    if flag:
        self.write_cmd(SET_COM_OUT_DIR)             # mirror vertically
        self.write_cmd(SET_SEG_REMAP)               # mirror horizontally (64 rows)
    else:
        self.write_cmd(SET_COM_OUT_DIR | 0x08)
        self.write_cmd(SET_SEG_REMAP | 0x01)`

Note: This addition works fine for my 64-rows display, but needs to be improved to support both 32 and 64 rows. May I suggest to add this rotate-facility to the standard driver?