The cortex_m33.h should not be included directly. It is already included in the stm32u5xx.h and that file sets all necessary defines. Updates #5289
This BSP supports a custom STM32U5 based board. It uses a similar structure like the existing STM32H7 BSP and therefore should be well adaptable to other boards. Co-authored-by: Christian Mauderer <christian.mauderer@embedded-brains.de>