Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Microchip Technology/ATSAME70N20B/UART0/SR#0x0
Status Register
Receiver Ready
Transmitter Ready
Overrun Error
Framing Error
Parity Error
Transmitter Empty
Comparison Match
https://github.com/cmsis-svd/cmsis-svd-data