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If you’re using an OLED display with SPI communication protocol, use the following GPIOs.
GPIO 14: CLK
GPIO 12: MISO
GPIO 13: MOSI
GPIO 15: CS
Here is another reference clip from this linked page...
If you’re using an OLED display with SPI communication protocol, use the following GPIOs.
GPIO 14: CLK
GPIO 12: MISO
GPIO 13: MOSI
GPIO 15: CS