Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/STMicroelectronics/STM32L15xxE/TIM9/CR1#0x0
control register 1
Counter enable
Update disable
Update request source
One-pulse mode
Auto-reload preload enable
Clock division
https://github.com/cmsis-svd/cmsis-svd-data