A bare-bones implementation to get going quickly. Very specifically only for driving a 3.5" ILI9481-based TFT display with an ATMega328 (no Arduino/Adafruit/other libs or bootloader required), but ...

I'm having trouble while trying to interface a 3.5 inch display bought from Amazon, which was advertised to be based on the ILI9486 controller. I tested the display and I had no issues with an Arduino ...