Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Texas Instruments/CC26x0/GPIO/DOUT31_28#0x0
Data Out 28 to 31
Alias register for byte access to each bit in DOUT31_0
DIO28
DIO29
DIO30
DIO31
https://github.com/cmsis-svd/cmsis-svd-data