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GD32A50x User Manual
487
Interrupt event
Event flag
Enable Control bit
Transmission complete
TC
TCIE
Received data ready to be
read
RBNE
RBNEIE
Overrun error detected
ORERR
Receive FIFO full
RFFINT
RFFIE
Idle line detected
IDLEF
IDLEIE
Parity error flag
PERR
PERRIE
Break detected flag in LIN
mode
LBDF
LBDIE
Reception Errors (Noise flag,
overrun error, framing error)
NERR or ORERR or FERR
ERRIE
Character match
AMF
AMIE
Receiver timeout error
RTF
RTIE
End of Block
EBF
EBIE
Wakeup from Deep-sleep
mode
WUF
WUIE
All of the interrupt events are ORed together before being sent to the interrupt controller, so
the USART can only generate a single interrupt request to the controller at any given time.
Software can service multiple interrupt events in a single interrupt service routine