Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Fujitsu/S6E1A1/FASTIO/FPDOR0#0x0
Fast GPIO Output Data Register 0
Bit0 of FPDOR0
Bit1 of FPDOR0
Bit2 of FPDOR0
Bit3 of FPDOR0
Bit4 of FPDOR0
Bit15 of FPDOR0
https://github.com/cmsis-svd/cmsis-svd-data