Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Holtek/HT32F275x/GPIOD/GPIOD_PDR#0x0
GPIOD_PDR
PD0
PD1
PD2
PD3
PD4
PD5
PD6
PD7
PD8
PD9
PD10
PD11
PD12
PD13
PD14
PD15
Reserved.
https://github.com/cmsis-svd/cmsis-svd-data