Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/STMicroelectronics/STM32F3x8/TIM1/OR#0x0
option registers
TIM1_ETR_ADC1 remapping capability
TIM1_ETR_ADC4 remapping capability
https://github.com/cmsis-svd/cmsis-svd-data