Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Silicon Labs/Series1/EFR32FG12P/EFR32FG12P431F1024GL125/ADC0/SCANFIFOCOUNT#0x0
Scan FIFO Count Register
Scan Data Count
https://github.com/cmsis-svd/cmsis-svd-data