I've seen a similar effect when the screen buffer width is not a multiple of 64 bytes. Try changing the screen width to 832. See 4.5.2 of this doc for more info: LCD-TFT display controller (LTDC) on STM32 MCUs - Application note
Hi Can you advise on the correct configuration to ensure memory devices & punch out work on the STM32F769I-DISCO? I get the area that should be punched out showing the background gradient, and what should be the background is black. I am using: Library: STemWin_CM7_wc32_ARGB.a #define GUI_USE_ARGB (1) in GUIConf.h #define COLOR_MODE_0 CMS_ARGB8888 which results in COLOR_CONVERSION_0 GUICC_M8888I and GUIDRV_LIN_32 being used in LCDConf.c The code is pretty much the example, with me adding some bi…