Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Fujitsu/S6E1A1/GPIO/PFR5#0x0
Port Function Setting Register 5
Bit0 of PFR5
Bit1 of PFR5
Bit2 of PFR5
https://github.com/cmsis-svd/cmsis-svd-data