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 ...

I included my simple command line Makefile to develop without the Arduino IDE. I looked over all the 'sample' arduino code and documentation from the following FTDI, Bridgetek, Matrix Orbital, New ...