Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Fujitsu/MB9AF42xK/GPIO/PFR0#0x0
Port function setting register 0
Bit0 of PFR0
Bit1 of PFR0
Bit2 of PFR0
Bit3 of PFR0
Bit4 of PFR0
Bit15 of PFR0
https://github.com/cmsis-svd/cmsis-svd-data