STM32U535 + ILI9341 TouchGFX Performance
I'm using TouchGFX with a custom board that contains a STM32U535 and ILI9341 display. The display also has the XPT2046 touch controller. The issue I'm running into, which ControllerTech pointed out in his video, the touch/refresh is kind of spotty at best. I'm currently just using the TouchGFX gauge and two buttons. Planning for the possibility of performance issues, I put a W25Q128JV (SPI mode) on the board. I haven't got that working yet. Prior to going down that road, will the external flash make the touch/display more performant? Is having the flash chip in SPI mode be a factor as well, would changing it to QuadSPI be a better solution? Or is this display never going to be performant with TouchGFX?
Thanks for any guidance.
Kindest regards.