ST STM32F2 User Manual

UM1940
HAL UART Generic Driver
DocID028236 Rev 2
663/1371
Return value:
The: new state of __FLAG__ (TRUE
or FALSE).
__HAL_UART_CLEAR_FLAG
Description:
Clears the specified UART pending
flag.
Parameters:
__HANDLE__: specifies the UART
Handle. This parameter can be
UARTx where x: 1, 2, 3, 4, 5, 6, 7 or
8 to select the USART or UART
peripheral.
__FLAG__: specifies the flag to
check. This parameter can be any
combination of the following values:
UART_FLAG_CTS: CTS
Change flag (not available for
UART4 and UART5).
UART_FLAG_LBD: LIN Break
detection flag.
UART_FLAG_TC:
Transmission Complete flag.
UART_FLAG_RXNE: Receive
data register not empty flag.
Return value:
None
Notes:
PE (Parity error), FE (Framing error),
NE (Noise error), ORE (Overrun
error) and IDLE (Idle line detected)
flags are cleared by software
sequence: a read operation to
USART_SR register followed by a
read operation to USART_DR
register. RXNE flag can be also
cleared by a read to the USART_DR
register. TC flag can be also cleared
by software sequence: a read
operation to USART_SR register
followed by a write operation to
USART_DR register. TXE flag is
cleared only by a write to the
USART_DR register.
__HAL_UART_CLEAR_PEFLAG
Description:
Clear the UART PE pending flag.
Parameters:
__HANDLE__: specifies the UART
Handle. This parameter can be

ST STM32F2 Specifications

General

Brand	ST
Model	STM32F2
Category	Microcontrollers
Language	English