Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32wb/STM32WB10_CM4/HSEM/CR#0x0
Semaphore Clear register
CoreID of semaphore to be cleared
Semaphore clear Key
https://github.com/modm-io/cmsis-svd-stm32