Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Fujitsu/MB9BF51xR/GPIO/PFR7#0x0
Port function setting register 7
Bit0 of PFR7
Bit1 of PFR7
Bit2 of PFR7
Bit3 of PFR7
Bit4 of PFR7
https://github.com/cmsis-svd/cmsis-svd-data