Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/STMicroelectronics/STM32F0xx/CEC/CFGR#0x0
configuration register
Own Address
Listen mode
Signal Free Time
Rx-Tolerance
Rx-stop on bit rising error
Generate error-bit on bit rising error
Generate Error-Bit on Long Bit Period Error
https://github.com/cmsis-svd/cmsis-svd-data