Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32f3/STM32F301/TIM16/SR#0x0
status register
Update interrupt flag
Capture/compare 1 interrupt flag
COM interrupt flag
Break interrupt flag
Capture/Compare 1 overcapture flag
https://github.com/modm-io/cmsis-svd-stm32