Usart Interrupts; Table 89. Usart Interrupt Requests - STMicroelectronics STM32F05 series Reference Manual

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25.6

USART interrupts

Table 89.
Transmit data register empty
CTS interrupt
Transmission Complete
Receive data register not empty (data ready to be read)
Overrun error detected
Idle line detected
Parity error
LIN break
Noise Flag, Overrun error and Framing Error in multibuffer
communication.
Character match
Receiver timeout error
End of Block
Wakeup from Stop mode
1. The WUF interrupt is active only in Stop mode.
The USART interrupt events are connected to the same interrupt vector (see
● During transmission: Transmission Complete, Clear to Send, Transmit Data Register
empty or Framing error (in Smartcard mode) interrupt.
●
During reception: Idle Line detection, Overrun error, Receive data register not empty,
Parity error, LIN break detection, Noise Flag (only in multi buffer communication),
Framing Error (only in multi buffer communication), Character match, etc.
These events generate an interrupt if the corresponding Enable Control Bit is set.
Universal synchronous asynchronous receiver transmitter (USART)
USART interrupt requests
Interrupt event
Doc ID 018940 Rev 1
Enable
Event flag
Control bit
TXE TXEIE
CTSIF CTSIE
TC TCIE
RXNE
RXNEIE
ORE
IDLE IDLEIE
PE PEIE
LBDF LBDIE
NF or ORE or FE EIE
CMF CMIE
RTOF RTOIE
EOBF EOBIE
(1)
WUF WUFIE
Figure 252).
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