Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Fujitsu/MB9BF41xS/GPIO/PFR0#0x0
Port function setting register 0
Bit0 of PFR0
Bit1 of PFR0
Bit2 of PFR0
Bit3 of PFR0
Bit4 of PFR0
Bit5 of PFR0
Bit6 of PFR0
Bit7 of PFR0
Bit8 of PFR0
Bit9 of PFR0
https://github.com/cmsis-svd/cmsis-svd-data