Some time ago I saw that it is possible to use the library for gameduino 2 with the EVE screens (FT800 and FT801), in fact the EVE Screen Editor (4.2.0) can export sketches with that library; so together with a friend (lightcalamar) we got to work (rather in the code) to investigate if it was possible to use screens like the EVE2 (FT813), EVE3 (BT815) or the EVE4 (BT817). With permission from its author: James Bowmann, we managed to modify the library for gameduino 23X, so that it could be used in conjunction with the SdFat library, instead of the SD library, all in the Arduino IDE environment.
The library is focused on STM32 boards like F103, F407, F411, F429, F746 and F767 and mainly on teensy 3.6, 4 and 4.1. The AVR and Due boards are very, very limited with the SdFat library, so we've left them out. At the moment the flash memory part has not been explored, however the other functions can be used perfectly.
The most advanced library we have is the GDSTx, however it needs some adjustments to upload it to github. The previous version is
GDT4Xv134Reviewing the way EVE Screen Editor v4.2.0 exports via pyton, I was able to add the option to export to the GDSTx custom library on FT81x boards (10, 11, 12 and 13), but with BT81x boards it hasn't been possible to get it. If the administrators allow it, I could share the modified program.
The screens I'm using are the NHD-FT813 5" on Teensy 4.1
And the Riverdi BT817 5" on Teensy 4.1