FLAG_Management

Functions
__STATIC_INLINE uint32_t	ll_uart_get_line_status_flag (uart_regs_t *UARTx)
	Get UART Receive Line Status Flag. More...
__STATIC_INLINE void	ll_uart_clear_line_status_flag (uart_regs_t *UARTx)
	Clear UART Receive Line Status Flag. More...
__STATIC_INLINE uint32_t	ll_uart_is_active_flag_rff (uart_regs_t *UARTx)
	Check if the UART Receive FIFO Full Flag is set or not. More...
__STATIC_INLINE uint32_t	ll_uart_is_active_flag_rfne (uart_regs_t *UARTx)
	Check if the UART Receive FIFO Not Empty Flag is set or not. More...
__STATIC_INLINE uint32_t	ll_uart_is_active_flag_tfe (uart_regs_t *UARTx)
	Check if the UART Transmit FIFO Empty Flag is set or not. More...
__STATIC_INLINE uint32_t	ll_uart_is_active_flag_tfnf (uart_regs_t *UARTx)
	Check if the UART Transmit FIFO Not Full Flag is set or not. More...
__STATIC_INLINE uint32_t	ll_uart_get_it_flag (uart_regs_t *UARTx)
	Get UART interrupt flags. More...

Detailed Description

Function Documentation

ll_uart_clear_line_status_flag()

__STATIC_INLINE void ll_uart_clear_line_status_flag

(

uart_regs_t *

UARTx

)

Clear UART Receive Line Status Flag.

Note

OE/PE/FE/BI/RFE flags can be cleared by reading LSR register.

Register	BitsName
LSR	OE
LSR	PE
LSR	FE
LSR	BI
LSR	RFE

Parameters

UARTx

UART instance

Return values

None

ll_uart_get_it_flag()

__STATIC_INLINE uint32_t ll_uart_get_it_flag

(

uart_regs_t *

UARTx

)

Get UART interrupt flags.

Note

The interrupt flags will be cleared after reading IIR. If interrupt was triggered when reading IIR register, the interrupt will be pended, and No Interrupt Pending Flag will be RESET, read IIR again can get the pended interrupt

Register	BitsName
IIR	IID

Parameters

UARTx

UART instance

Return values

Returned

value can be one or combination of the following values: LL_UART_IIR_MS LL_UART_IIR_NIP LL_UART_IIR_THRE LL_UART_IIR_RDA LL_UART_IIR_RLS LL_UART_IIR_CTO

ll_uart_get_line_status_flag()

__STATIC_INLINE uint32_t ll_uart_get_line_status_flag

(

uart_regs_t *

UARTx

)

Get UART Receive Line Status Flag.

Note

This function is used to get OE/PE/FE/BI/THRE/TEMT/RFE flags in LSR register. After LSR register was read, OE/PE/FE/BI/RFE flags will be cleared.

Register	BitsName
LSR	OE
LSR	PE
LSR	FE
LSR	BI
LSR	THRE
LSR	TEMT
LSR	RFE

Parameters

UARTx

UART instance

Return values

Returned

value can be a combination of the following values: LL_UART_LSR_OE LL_UART_LSR_PE LL_UART_LSR_FE LL_UART_LSR_BI LL_UART_LSR_THRE LL_UART_LSR_TEMT LL_UART_LSR_RFE

ll_uart_is_active_flag_rff()

__STATIC_INLINE uint32_t ll_uart_is_active_flag_rff

(

uart_regs_t *

UARTx

)

Check if the UART Receive FIFO Full Flag is set or not.

Register	BitsName
USR	RFF

Parameters

UARTx

UART instance

Return values

State

of bit (1 or 0).

ll_uart_is_active_flag_rfne()

__STATIC_INLINE uint32_t ll_uart_is_active_flag_rfne

(

uart_regs_t *

UARTx

)

Check if the UART Receive FIFO Not Empty Flag is set or not.

Register	BitsName
USR	RFNE

Parameters

UARTx

UART instance

Return values

State

of bit (1 or 0).

ll_uart_is_active_flag_tfe()

__STATIC_INLINE uint32_t ll_uart_is_active_flag_tfe

(

uart_regs_t *

UARTx

)

Check if the UART Transmit FIFO Empty Flag is set or not.

Register	BitsName
USR	TFE

Parameters

UARTx

UART instance

Return values

State

of bit (1 or 0).

ll_uart_is_active_flag_tfnf()

__STATIC_INLINE uint32_t ll_uart_is_active_flag_tfnf

(

uart_regs_t *

UARTx

)

Check if the UART Transmit FIFO Not Full Flag is set or not.

Register	BitsName
USR	TFNF

Parameters

UARTx

UART instance

Return values

State

of bit (1 or 0).