Lpuart Interrupts; Table 195. Lpuart Interrupt Requests - ST STM32G0 1 Series Reference Manual

RM0444
34.6

LPUART interrupts

Refer to
Interrupt
Interrupt event
vector
Transmit data
register empty
Transmit FIFO Not
Full
Transmit FIFO
Empty
Transmit FIFO
threshold reached
CTS interrupt
Transmission
Complete
Receive data
register not empty
(data ready to be
read)
Receive FIFO Not
Empty
Receive FIFO Full
LPUART
Receive FIFO
threshold reached
Overrun error
detected
Idle line detected
Parity error
Noise error in
multibuffer
communication.
Overrun error in
multibuffer
communication.
Framing Error in
multibuffer
communication.
Character match
Wakeup from low-
power mode
Low-power universal asynchronous receiver transmitter (LPUART)
Table 195 for a detailed description of all LPUART interrupt requests.

Table 195. LPUART interrupt requests

Event
flag
TXE
TXFNF TXFNFIE TXFIFO full
TXFE
TXFT
CTSIF
TC
RXNE
RXFNE RXFNEIE
(2)
RXFF
RXFT
ORE
IDLE
PE
NE
(3)
ORE
FE
CMF
WUF
Enable
Interrupt clear
Control
method
bit
TXEIE Write TDR
Write TDR or write 1
TXFEIE
in TXFRQ
TXFTIE Write TDR
CTSIE Write 1 in CTSCF
Write TDR or write 1
TCIE
in TCCF
Read RDR or write
RXNEIE
1 in RXFRQ
Read RDR until
RXFIFO empty or
write 1 in RXFRQ
RXFFIE Read RDR
RXFTIE Read RDR
RX-
NEIE/RX Write 1 in ORECF
FNEIE
IDLEIE Write 1 in IDLECF
PEIE Write 1 in PECF
Write 1 in NFCF
EIE Write 1 in ORECF
Write 1 in FECF
CMIE Write 1 in CMCF
WUFIE Write 1 in WUC
RM0444 Rev 5
Exit from Exit from Exit from
(1)
Sleep Stop
mode modes
NO
NO
YES
YES
YES
NO
NO
YES
YES
YES
YES
NO
NO
YES
NO
NO
NO
NO
NO
YES
Standby
mode
NO
1113/1390
1138