Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/STMicroelectronics/STM32W108/GPIOA/GPIOA_BRR#0x0
Port A output clear register
BR0
BR1
BR2
BR3
BR4
BR5
BR6
BR7
https://github.com/cmsis-svd/cmsis-svd-data