I am using an STM32F439BIT processor and developing in Keil uVision 5. My goal is to make a touchscreen GUI for a VGA resolution touchscreen. I have implemented STEmWin to the best of my abilities, using the LIN32 Driver (which should work with my touchscreen). Using the hltdc.Init.Backcolor.Red/Green/Blue elements in LCD_LL_Init() I am able to set a solid color to the screen. When I begin calling STEmWin functions (GUI_Clear(), GUI_DispStringAt(), etc.), nothing is printed to the screen.
Has anyone experienced this? Anyone have insight into some common causes for this or what I may have missed?