Hello.
Unfortunately, there is no SplitString$ function in the AdvString component.

C:\Temp\ccK7ovBM.o: In function `main':
Atmega328p.c:(.text.startup.main+0x36c): undefined reference to `FCI_SPLITSTRING'
collect2.exe: error: ld returned 1 exit status

Hi.
The SplitString$() function does not work, or rather the project is not compiled if this function is present.

I haven't modified J1. The display works via a software SPI

Unfortunately both options didn't work

Hello. Yes, the MK is working, but the display does not work, the screen is white.

Hello. With the ATMEGA328P microcontroller, the ILI9488 SPI display does not work hardware SPI, the MK just hangs. The software SPI works, but very slowly.