Same code from STM32L476RG won't run on one core of STM32H747.
On a my Nucleo-L476RG board, I used cube to only activate an LED connected gpio (PA5) - Nothing else.Then I programmed some blinky code into the main while loop: HAL_GPIO_WritePin(GPIOA, GPIO_PIN_5, RESET); HAL_Delay(1000); ...