Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Fujitsu/MB9AF13xK/GPIO/DDR0#0x0
Port input/output direction setting register 0
Bit0 of DDR0
Bit1 of DDR0
Bit2 of DDR0
Bit3 of DDR0
Bit4 of DDR0
Bit13 of DDR0
Bit14 of DDR0
Bit15 of DDR0
https://github.com/cmsis-svd/cmsis-svd-data