FMC Example isn't Loading

[Caan]

The STM32H750B-dk Based Custom Board isn't entering debugging mode when using STM32CubeIDE . But QSPI Example Code is working perfectly.

[TDK]

If the FMC settings are bad, the debugger won't be able to connect.

Does the program work in non-debug mode?

Consider putting in HAL_Delay(1000) prior to any FMC initialization, setting a breakpoint there, and stepping through.