Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/STMicroelectronics/STM32W108/TIM2/TIM2_SMCR#0x0
TIM slave Mode Control register
SMS
TS
MSM
ETF
ETPS
ECE
ETP
https://github.com/cmsis-svd/cmsis-svd-data