Functions
void	UART4_ClearFlag (UART4_Flag_TypeDef UART4_FLAG)
	Clears the UART4 flags.
void	UART4_ClearITPendingBit (UART4_IT_TypeDef UART4_IT)
	Clears the UART4 pending flags.
void	UART4_Cmd (FunctionalState NewState)
	Enable the UART4 peripheral.
void	UART4_DeInit (void)
	Deinitializes the UART peripheral.
FlagStatus	UART4_GetFlagStatus (UART4_Flag_TypeDef UART4_FLAG)
	Checks whether the specified UART4 flag is set or not.
ITStatus	UART4_GetITStatus (UART4_IT_TypeDef UART4_IT)
	Checks whether the specified UART4 interrupt has occurred or not.
void	UART4_HalfDuplexCmd (FunctionalState NewState)
	Enables or disables the UART�s Half Duplex communication.
void	UART4_Init (uint32_t BaudRate, UART4_WordLength_TypeDef WordLength, UART4_StopBits_TypeDef StopBits, UART4_Parity_TypeDef Parity, UART4_SyncMode_TypeDef SyncMode, UART4_Mode_TypeDef Mode)
	Initializes the UART4 according to the specified parameters.
void	UART4_IrDACmd (FunctionalState NewState)
	Enables or disables the UART4�s IrDA interface.
void	UART4_IrDAConfig (UART4_IrDAMode_TypeDef UART4_IrDAMode)
	Configures the UART4�s IrDA interface.
void	UART4_ITConfig (UART4_IT_TypeDef UART4_IT, FunctionalState NewState)
	Enables or disables the specified UART4 interrupts.
void	UART4_LINBreakDetectionConfig (UART4_LINBreakDetectionLength_TypeDef UART4_LINBreakDetectionLength)
	Sets the UART4 LIN Break detection length.
void	UART4_LINCmd (FunctionalState NewState)
	Enables or disables the UART4 LIN mode.
void	UART4_LINConfig (UART4_LinMode_TypeDef UART4_Mode, UART4_LinAutosync_TypeDef UART4_Autosync, UART4_LinDivUp_TypeDef UART4_DivUp)
	Configure the UART4 peripheral.
uint8_t	UART4_ReceiveData8 (void)
	Returns the most recent received data by the UART4 peripheral.
uint16_t	UART4_ReceiveData9 (void)
	Returns the most recent received data by the UART4 peripheral.
void	UART4_ReceiverWakeUpCmd (FunctionalState NewState)
	Determines if the UART4 is in mute mode or not.
void	UART4_SendBreak (void)
	Transmits break characters.
void	UART4_SendData8 (uint8_t Data)
	Transmits 8 bit data through the UART4 peripheral.
void	UART4_SendData9 (uint16_t Data)
	Transmits 9 bit data through the UART4 peripheral.
void	UART4_SetAddress (uint8_t UART4_Address)
	Sets the address of the UART4 node.
void	UART4_SetGuardTime (uint8_t UART4_GuardTime)
	Sets the specified UART4 guard time.
void	UART4_SetPrescaler (uint8_t UART4_Prescaler)
	Sets the system clock prescaler.
void	UART4_SmartCardCmd (FunctionalState NewState)
	Enables or disables the UART4 Smart Card mode.
void	UART4_SmartCardNACKCmd (FunctionalState NewState)
	Enables or disables NACK transmission.
void	UART4_WakeUpConfig (UART4_WakeUp_TypeDef UART4_WakeUp)
	Selects the UART4 WakeUp method.

Function Documentation

void UART4_ClearFlag ( UART4_Flag_TypeDef UART4_FLAG )

Clears the UART4 flags.

Parameters:

UART4_FLAG

specifies the flag to clear This parameter can be any combination of the following values:

UART4_FLAG_LBDF: LIN Break detection flag.
UART4_FLAG_LHDF: LIN Header detection flag.
UART4_FLAG_LSF: LIN synchrone field flag.
UART4_FLAG_RXNE: Receive data register not empty flag.

Note:

:

PE (Parity error), FE (Framing error), NE (Noise error), OR (OverRun error) and IDLE (Idle line detected) flags are cleared by software sequence: a read operation to UART4_SR register (UART4_GetFlagStatus())followed by a read operation to UART4_DR register(UART4_ReceiveData8() or UART4_ReceiveData9()).

RXNE flag can be also cleared by a read to the UART4_DR register (UART4_ReceiveData8()or UART4_ReceiveData9()).

TC flag can be also cleared by software sequence: a read operation to UART4_SR register (UART4_GetFlagStatus()) followed by a write operation to UART4_DR register (UART4_SendData8() or UART4_SendData9()).

TXE flag is cleared only by a write to the UART4_DR register (UART4_SendData8() or UART4_SendData9()).

SBK flag is cleared during the stop bit of break.
Return values:

None

Definition at line 719 of file stm8s_uart4.c.

References IS_UART4_CLEAR_FLAG_OK, UART4_FLAG_LBDF, UART4_FLAG_LHDF, and UART4_FLAG_RXNE.

void UART4_ClearITPendingBit ( UART4_IT_TypeDef UART4_IT )

Clears the UART4 pending flags.

Parameters:

UART4_IT

specifies the pending bit to clear This parameter can be one of the following values:

UART4_IT_LBDF: LIN Break detection interrupt
UART4_IT_LHDF: LIN Header detection interrupt
UART4_IT_RXNE: Receive Data register not empty interrupt.

Note:

PE (Parity error), FE (Framing error), NE (Noise error), OR (OverRun error) and IDLE (Idle line detected) pending bits are cleared by software sequence: a read operation to UART4_SR register (UART4_GetITStatus()) followed by a read operation to UART4_DR register (UART4_ReceiveData8() or UART4_ReceiveData9()).

RXNE pending bit can be also cleared by a read to the UART4_DR register (UART4_ReceiveData8() or UART4_ReceiveData9()).

TC (Transmit complete) pending bit can be cleared by software sequence: a read operation to UART4_SR register (UART4_GetITStatus()) followed by a write operation to UART4_DR register (UART4_SendData8()or UART4_SendData9()).

TXE pending bit is cleared only by a write to the UART4_DR register (UART4_SendData8() or UART4_SendData9()).
Return values:

None

Definition at line 872 of file stm8s_uart4.c.

References IS_UART4_CLEAR_IT_OK, UART4_IT_LBDF, and UART4_IT_RXNE.

void UART4_Cmd ( FunctionalState NewState )

Enable the UART4 peripheral.

Parameters:

NewState : The new state of the UART Communication. This parameter can be any of the FunctionalState enumeration.

Return values:

None

Definition at line 181 of file stm8s_uart4.c.

References DISABLE.

void UART4_DeInit ( void )

Deinitializes the UART peripheral.

Parameters:

None

Return values:

None

Definition at line 53 of file stm8s_uart4.c.

FlagStatus UART4_GetFlagStatus ( UART4_Flag_TypeDef UART4_FLAG )

Checks whether the specified UART4 flag is set or not.

Parameters:

UART4_FLAG specifies the flag to check. This parameter can be any of the UART4_Flag_TypeDef enumeration.

Return values:

FlagStatus (SET or RESET)

Definition at line 626 of file stm8s_uart4.c.

References IS_UART4_FLAG_OK, RESET, SET, UART4_FLAG_LBDF, UART4_FLAG_LHDF, UART4_FLAG_LSF, and UART4_FLAG_SBK.

ITStatus UART4_GetITStatus ( UART4_IT_TypeDef UART4_IT )

Checks whether the specified UART4 interrupt has occurred or not.

Parameters:

UART4_IT,:

Specifies the UART4 interrupt pending bit to check. This parameter can be one of the following values:

UART4_IT_LBDF: LIN Break detection interrupt
UART4_IT_TXE: Transmit Data Register empty interrupt
UART4_IT_TC: Transmission complete interrupt
UART4_IT_RXNE: Receive Data register not empty interrupt
UART4_IT_IDLE: Idle line detection interrupt
UART4_IT_OR: OverRun Error interrupt
UART4_IT_PE: Parity Error interrupt

Return values:

The	state of UART4_IT (SET or RESET).

Definition at line 758 of file stm8s_uart4.c.

References IS_UART4_GET_IT_OK, RESET, SET, UART4_IT_LBDF, UART4_IT_LHDF, and UART4_IT_PE.

void UART4_HalfDuplexCmd ( FunctionalState NewState )

Enables or disables the UART�s Half Duplex communication.

Parameters:

NewState new state of the UART Communication. This parameter can be: ENABLE or DISABLE.

Return values:

None

< UART4 Half Duplex Enable

< UART4 Half Duplex Disable

Definition at line 272 of file stm8s_uart4.c.

References DISABLE, and IS_FUNCTIONALSTATE_OK.

void UART4_Init	(	uint32_t	BaudRate,
		UART4_WordLength_TypeDef	WordLength,
		UART4_StopBits_TypeDef	StopBits,
		UART4_Parity_TypeDef	Parity,
		UART4_SyncMode_TypeDef	SyncMode,
		UART4_Mode_TypeDef	Mode
	)

Initializes the UART4 according to the specified parameters.

Parameters:

BaudRate,:	The baudrate.
WordLength	: This parameter can be any of the UART4_WordLength_TypeDef enumeration.
StopBits,:	This parameter can be any of the UART4_StopBits_TypeDef enumeration.
Parity,:	This parameter can be any of the UART4_Parity_TypeDef enumeration.
SyncMode,:	This parameter can be any of the UART4_SyncMode_TypeDef values.
Mode,:	This parameter can be any of the UART4_Mode_TypeDef values

Return values:

None

Definition at line 85 of file stm8s_uart4.c.

References CLK_GetClockFreq(), IS_UART4_BAUDRATE_OK, IS_UART4_MODE_OK, IS_UART4_PARITY_OK, IS_UART4_STOPBITS_OK, IS_UART4_SYNCMODE_OK, IS_UART4_WORDLENGTH_OK, UART4_MODE_RX_ENABLE, UART4_MODE_TX_ENABLE, and UART4_SYNCMODE_CLOCK_DISABLE.

void UART4_IrDACmd ( FunctionalState NewState )

Enables or disables the UART4�s IrDA interface.

Parameters:

NewState new state of the IrDA mode. This parameter can be: ENABLE or DISABLE.

Return values:

None

Definition at line 312 of file stm8s_uart4.c.

References DISABLE, and IS_FUNCTIONALSTATE_OK.

void UART4_IrDAConfig ( UART4_IrDAMode_TypeDef UART4_IrDAMode )

Configures the UART4�s IrDA interface.

Parameters:

UART4_IrDAMode specifies the IrDA mode. This parameter can be any of the UART4_IrDAMode_TypeDef values.

Return values:

None

Definition at line 292 of file stm8s_uart4.c.

References IS_UART4_IRDAMODE_OK, and UART4_IRDAMODE_NORMAL.

void UART4_ITConfig	(	UART4_IT_TypeDef	UART4_IT,
		FunctionalState	NewState
	)

Enables or disables the specified UART4 interrupts.

Parameters:

UART4_IT

specifies the UART4 interrupt sources to be enabled or disabled. This parameter can be one of the following values:

UART4_IT_LBDF: LIN Break detection interrupt
UART4_IT_LHDF: LIN Break detection interrupt
UART4_IT_TXE: Transmit Data Register empty interrupt
UART4_IT_TC: Transmission complete interrupt
UART4_IT_RXNE_OR: Receive Data register not empty/Over run error interrupt
UART4_IT_IDLE: Idle line detection interrupt
UART4_IT_PE: Parity Error interrupt

NewState new state of the specified UART4 interrupts. This parameter can be: ENABLE or DISABLE.

Return values:

None

Definition at line 210 of file stm8s_uart4.c.

References DISABLE, IS_FUNCTIONALSTATE_OK, and IS_UART4_CONFIG_IT_OK.

void UART4_LINBreakDetectionConfig ( UART4_LINBreakDetectionLength_TypeDef UART4_LINBreakDetectionLength )

Sets the UART4 LIN Break detection length.

Parameters:

UART4_LINBreakDetectionLength specifies the LIN break detection length. This parameter can be any of the UART4_LINBreakDetectionLength_TypeDef values.

Return values:

None

Definition at line 336 of file stm8s_uart4.c.

References IS_UART4_LINBREAKDETECTIONLENGTH_OK, and UART4_LINBREAKDETECTIONLENGTH_10BITS.

void UART4_LINCmd ( FunctionalState NewState )

Enables or disables the UART4 LIN mode.

Parameters:

NewState is new state of the UART4 LIN mode. This parameter can be ENABLE or DISABLE

Return values:

None

Definition at line 404 of file stm8s_uart4.c.

References DISABLE, and IS_FUNCTIONALSTATE_OK.

void UART4_LINConfig	(	UART4_LinMode_TypeDef	UART4_Mode,
		UART4_LinAutosync_TypeDef	UART4_Autosync,
		UART4_LinDivUp_TypeDef	UART4_DivUp
	)

Configure the UART4 peripheral.

Parameters:

UART4_Mode	specifies the LIN mode. This parameter can be any of the UART4_LinMode_TypeDef values.
UART4_Autosync	specifies the LIN automatic resynchronization mode. This parameter can be any of the UART4_LinAutosync_TypeDef values.
UART4_DivUp	specifies the LIN divider update method. This parameter can be any of the UART4_LinDivUp_TypeDef values.

Return values:

None

Definition at line 361 of file stm8s_uart4.c.

References IS_UART4_AUTOSYNC_OK, IS_UART4_DIVUP_OK, IS_UART4_SLAVE_OK, UART4_LIN_AUTOSYNC_DISABLE, UART4_LIN_DIVUP_LBRR1, and UART4_LIN_MODE_MASTER.

uint8_t UART4_ReceiveData8 ( void )

Returns the most recent received data by the UART4 peripheral.

Parameters:

None

Return values:

Received Data

Definition at line 507 of file stm8s_uart4.c.

uint16_t UART4_ReceiveData9 ( void )

Returns the most recent received data by the UART4 peripheral.

Parameters:

None

Return values:

Received Data

Definition at line 517 of file stm8s_uart4.c.

void UART4_ReceiverWakeUpCmd ( FunctionalState NewState )

Determines if the UART4 is in mute mode or not.

Parameters:

NewState,: new state of the UART4 mode. This parameter can be ENABLE or DISABLE

Return values:

None

Definition at line 486 of file stm8s_uart4.c.

References DISABLE, and IS_FUNCTIONALSTATE_OK.

void UART4_SendBreak ( void )

Transmits break characters.

Parameters:

None

Return values:

None

Definition at line 559 of file stm8s_uart4.c.

void UART4_SendData8 ( uint8_t Data )

Transmits 8 bit data through the UART4 peripheral.

Parameters:

Data,: the data to transmit.

Return values:

None

Definition at line 531 of file stm8s_uart4.c.

void UART4_SendData9 ( uint16_t Data )

Transmits 9 bit data through the UART4 peripheral.

Parameters:

Data,: the data to transmit.

Return values:

None

Definition at line 542 of file stm8s_uart4.c.

void UART4_SetAddress ( uint8_t UART4_Address )

Sets the address of the UART4 node.

Parameters:

UART4_Address,: Indicates the address of the UART4 node.

Return values:

None

Definition at line 569 of file stm8s_uart4.c.

References IS_UART4_ADDRESS_OK.

void UART4_SetGuardTime ( uint8_t UART4_GuardTime )

Sets the specified UART4 guard time.

Note:: SmartCard Mode should be Enabled

Parameters:

UART4_GuardTime,: specifies the guard time.

Return values:

None

Definition at line 586 of file stm8s_uart4.c.

void UART4_SetPrescaler ( uint8_t UART4_Prescaler )

Sets the system clock prescaler.

Note:: IrDA Low Power mode or smartcard mode should be enabled; This function is related to SmartCard and IrDa mode.

Parameters:

UART4_Prescaler,: specifies the prescaler clock. This parameter can be one of the following values:

IrDA Low Power Mode

The clock source is divided by the value given in the register (8 bits)

0000 0000 Reserved
0000 0001 divides the clock source by 1
0000 0010 divides the clock source by 2
...

Smart Card Mode

The clock source is divided by the value given in the register (5 significant bits) multiplied by 2

0 0000 Reserved
0 0001 divides the clock source by 2
0 0010 divides the clock source by 4
0 0011 divides the clock source by 6
...

Return values:

None

Definition at line 614 of file stm8s_uart4.c.

void UART4_SmartCardCmd ( FunctionalState NewState )

Enables or disables the UART4 Smart Card mode.

Parameters:

NewState,: new state of the Smart Card mode. This parameter can be: ENABLE or DISABLE.

Return values:

None

Definition at line 426 of file stm8s_uart4.c.

References DISABLE, and IS_FUNCTIONALSTATE_OK.

void UART4_SmartCardNACKCmd ( FunctionalState NewState )

Enables or disables NACK transmission.

Parameters:

NewState,: new state of the Smart Card mode. This parameter can be: ENABLE or DISABLE.

Return values:

None

Definition at line 449 of file stm8s_uart4.c.

References DISABLE, and IS_FUNCTIONALSTATE_OK.

void UART4_WakeUpConfig ( UART4_WakeUp_TypeDef UART4_WakeUp )

Selects the UART4 WakeUp method.

Parameters:

UART4_WakeUp,: specifies the UART4 wakeup method. This parameter can be any of the UART4_WakeUp_TypeDef values.

Return values:

None

Definition at line 472 of file stm8s_uart4.c.

References IS_UART4_WAKEUP_OK.

STM8S/A Standard Peripherals Drivers: UART4_Public_Functions

STM8S/A

Functions

Function Documentation

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