Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Fujitsu/S6E1A1/FASTIO/FPDOR1#0x0
Fast GPIO Output Data Register 1
Bit0 of FPDOR1
Bit1 of FPDOR1
Bit2 of FPDOR1
Bit3 of FPDOR1
Bit4 of FPDOR1
Bit5 of FPDOR1
https://github.com/cmsis-svd/cmsis-svd-data