I am using an STM32H7-based 7.0" Riverdi display board. I supplied 12V power to the board and connected the SWD pins to my external debugger.
When I first powered the board, the pre-installed demo application on the screen ran correctly.
After that, I created a GUI project using TouchGFX and selected the STM32H7-70STM board as the template. I compiled and flashed the code, and TouchGFX reported that the upload was successful.
However, after flashing, the screen remains completely black and does not respond.
I tested other GUI projects — even very simple ones with just a button — but the screen still does not display anything.
I would appreciate help identifying the cause of the issue.
