Run in the Arduino IDE the HelloWorld example with an ili9488 in SPI. In fact, you don't need an ili display to try this, because it fails at compile time. The possible wiring errors, are irrelevant ...
Arduino Monochrom Graphics Library for LCDs and OLEDs - u8glib/sys/arduino/HelloWorld/Makefile.16bit.100.uno at master · olikraus/u8glib ...
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