Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32wl/STM32WL5x_CM0P/RCC/ICSCR#0x0
Internal clock sources calibration register
MSI clock calibration
MSI clock trimming
HSI16 clock calibration
HSI16 clock trimming
https://github.com/modm-io/cmsis-svd-stm32