Functions
void	UART1_ClearFlag (UART1_Flag_TypeDef UART1_FLAG)
	Clears the UART1 flags.
void	UART1_ClearITPendingBit (UART1_IT_TypeDef UART1_IT)
	Clears the UART1 pending flags.
void	UART1_Cmd (FunctionalState NewState)
	Enable the UART1 peripheral.
void	UART1_DeInit (void)
	Deinitializes the UART peripheral.
FlagStatus	UART1_GetFlagStatus (UART1_Flag_TypeDef UART1_FLAG)
	Checks whether the specified UART1 flag is set or not.
ITStatus	UART1_GetITStatus (UART1_IT_TypeDef UART1_IT)
	Checks whether the specified UART1 interrupt has occurred or not.
void	UART1_HalfDuplexCmd (FunctionalState NewState)
	Enables or disables the UART�s Half Duplex communication.
void	UART1_Init (uint32_t BaudRate, UART1_WordLength_TypeDef WordLength, UART1_StopBits_TypeDef StopBits, UART1_Parity_TypeDef Parity, UART1_SyncMode_TypeDef SyncMode, UART1_Mode_TypeDef Mode)
	Initializes the UART1 according to the specified parameters.
void	UART1_IrDACmd (FunctionalState NewState)
	Enables or disables the UART�s IrDA interface.
void	UART1_IrDAConfig (UART1_IrDAMode_TypeDef UART1_IrDAMode)
	Configures the UART�s IrDA interface.
void	UART1_ITConfig (UART1_IT_TypeDef UART1_IT, FunctionalState NewState)
	Enables or disables the specified USART interrupts.
void	UART1_LINBreakDetectionConfig (UART1_LINBreakDetectionLength_TypeDef UART1_LINBreakDetectionLength)
	Sets the UART1 LIN Break detection length.
void	UART1_LINCmd (FunctionalState NewState)
	Enables or disables the UART1�s LIN mode.
uint8_t	UART1_ReceiveData8 (void)
	Returns the most recent received data by the UART1 peripheral.
uint16_t	UART1_ReceiveData9 (void)
	Returns the most recent received data by the UART1 peripheral.
void	UART1_ReceiverWakeUpCmd (FunctionalState NewState)
	Determines if the UART1 is in mute mode or not.
void	UART1_SendBreak (void)
	Transmits break characters.
void	UART1_SendData8 (uint8_t Data)
	Transmits 8 bit data through the UART1 peripheral.
void	UART1_SendData9 (uint16_t Data)
	Transmits 9 bit data through the UART peripheral.
void	UART1_SetAddress (uint8_t UART1_Address)
	Sets the address of the UART1 node.
void	UART1_SetGuardTime (uint8_t UART1_GuardTime)
	Sets the specified UART guard time.
void	UART1_SetPrescaler (uint8_t UART1_Prescaler)
	Sets the system clock prescaler.
void	UART1_SmartCardCmd (FunctionalState NewState)
	Enables or disables the UART1 Smart Card mode.
void	UART1_SmartCardNACKCmd (FunctionalState NewState)
	Enables or disables NACK transmission.
void	UART1_WakeUpConfig (UART1_WakeUp_TypeDef UART1_WakeUp)
	Selects the UART1 WakeUp method.

Function Documentation

void UART1_ClearFlag ( UART1_Flag_TypeDef UART1_FLAG )

Clears the UART1 flags.

Parameters:

UART1_FLAG

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

UART1_FLAG_LBDF: LIN Break detection flag.
UART1_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 UART1_SR register (UART1_GetFlagStatus())followed by a read operation to UART1_DR register(UART1_ReceiveData8() or UART1_ReceiveData9()).

RXNE flag can be also cleared by a read to the UART1_DR register (UART1_ReceiveData8()or UART1_ReceiveData9()).

TC flag can be also cleared by software sequence: a read operation to UART1_SR register (UART1_GetFlagStatus()) followed by a write operation to UART1_DR register (UART1_SendData8() or UART1_SendData9()).

TXE flag is cleared only by a write to the UART1_DR register (UART1_SendData8() or UART1_SendData9()).

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

None

Definition at line 646 of file stm8s_uart1.c.

References IS_UART1_CLEAR_FLAG_OK, UART1_CR4_LBDF, UART1_FLAG_RXNE, and UART1_SR_RXNE.

void UART1_ClearITPendingBit ( UART1_IT_TypeDef UART1_IT )

Clears the UART1 pending flags.

Parameters:

UART1_IT

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

UART1_IT_LBDF: LIN Break detection interrupt
UART1_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 UART1_SR register (UART1_GetITStatus()) followed by a read operation to UART1_DR register (UART1_ReceiveData8() or UART1_ReceiveData9()).

RXNE pending bit can be also cleared by a read to the UART1_DR register (UART1_ReceiveData8() or UART1_ReceiveData9()).

TC (Transmit complete) pending bit can be cleared by software sequence: a read operation to UART1_SR register (UART1_GetITStatus()) followed by a write operation to UART1_DR register (UART1_SendData8() or UART1_SendData9()).

TXE pending bit is cleared only by a write to the UART1_DR register (UART1_SendData8() or UART1_SendData9()).
Return values:

None

Definition at line 775 of file stm8s_uart1.c.

References IS_UART1_CLEAR_IT_OK, UART1_CR4_LBDF, UART1_IT_RXNE, and UART1_SR_RXNE.

void UART1_Cmd ( FunctionalState NewState )

Enable the UART1 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 184 of file stm8s_uart1.c.

References DISABLE, and UART1_CR1_UARTD.

void UART1_DeInit ( void )

Deinitializes the UART peripheral.

Parameters:

None

Return values:

None

Definition at line 53 of file stm8s_uart1.c.

References UART1_BRR1_RESET_VALUE, UART1_BRR2_RESET_VALUE, UART1_CR1_RESET_VALUE, UART1_CR2_RESET_VALUE, UART1_CR3_RESET_VALUE, UART1_CR4_RESET_VALUE, UART1_CR5_RESET_VALUE, UART1_GTR_RESET_VALUE, and UART1_PSCR_RESET_VALUE.

FlagStatus UART1_GetFlagStatus ( UART1_Flag_TypeDef UART1_FLAG )

Checks whether the specified UART1 flag is set or not.

Parameters:

UART1_FLAG specifies the flag to check. This parameter can be any of the UART1_Flag_TypeDef enumeration.

Return values:

FlagStatus (SET or RESET)

Definition at line 568 of file stm8s_uart1.c.

References IS_UART1_FLAG_OK, RESET, SET, UART1_FLAG_LBDF, and UART1_FLAG_SBK.

ITStatus UART1_GetITStatus ( UART1_IT_TypeDef UART1_IT )

Checks whether the specified UART1 interrupt has occurred or not.

Parameters:

UART1_IT,:

Specifies the UART1 interrupt pending bit to check. This parameter can be one of the following values:

UART1_IT_LBDF: LIN Break detection interrupt
UART1_IT_TXE: Transmit Data Register empty interrupt
UART1_IT_TC: Transmission complete interrupt
UART1_IT_RXNE: Receive Data register not empty interrupt
UART1_IT_IDLE: Idle line detection interrupt
UART1_IT_OR: OverRun Error interrupt
UART1_IT_PE: Parity Error interrupt

Return values:

The	new state of UART1_IT (SET or RESET).

Definition at line 675 of file stm8s_uart1.c.

References IS_UART1_GET_IT_OK, RESET, SET, UART1_IT_LBDF, and UART1_IT_PE.

void UART1_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

< UART1 Half Duplex Enable

< UART1 Half Duplex Disable

Definition at line 265 of file stm8s_uart1.c.

References DISABLE, IS_FUNCTIONALSTATE_OK, and UART1_CR5_HDSEL.

void UART1_Init	(	uint32_t	BaudRate,
		UART1_WordLength_TypeDef	WordLength,
		UART1_StopBits_TypeDef	StopBits,
		UART1_Parity_TypeDef	Parity,
		UART1_SyncMode_TypeDef	SyncMode,
		UART1_Mode_TypeDef	Mode
	)

Initializes the UART1 according to the specified parameters.

Note:: Configure in Push Pull or Open Drain mode the Tx pin by setting the correct I/O Port register according the product package and line configuration

Parameters:

BaudRate,:	The baudrate.
WordLength	: This parameter can be any of the UART1_WordLength_TypeDef enumeration.
StopBits,:	This parameter can be any of the UART1_StopBits_TypeDef enumeration.
Parity,:	This parameter can be any of the UART1_Parity_TypeDef enumeration.
SyncMode,:	This parameter can be any of the UART1_SyncMode_TypeDef values.
Mode,:	This parameter can be any of the UART1_Mode_TypeDef values

Return values:

None

Definition at line 90 of file stm8s_uart1.c.

References CLK_GetClockFreq(), IS_UART1_BAUDRATE_OK, IS_UART1_MODE_OK, IS_UART1_PARITY_OK, IS_UART1_STOPBITS_OK, IS_UART1_SYNCMODE_OK, IS_UART1_WORDLENGTH_OK, UART1_BRR1_DIVM, UART1_BRR2_DIVF, UART1_BRR2_DIVM, UART1_CR1_M, UART1_CR1_PCEN, UART1_CR1_PS, UART1_CR2_REN, UART1_CR2_TEN, UART1_CR3_CKEN, UART1_CR3_CPHA, UART1_CR3_CPOL, UART1_CR3_LBCL, UART1_CR3_STOP, UART1_MODE_RX_ENABLE, UART1_MODE_TX_ENABLE, and UART1_SYNCMODE_CLOCK_DISABLE.

void UART1_IrDACmd ( FunctionalState NewState )

Enables or disables the UART�s IrDA interface.

Parameters:

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

Return values:

None

Definition at line 305 of file stm8s_uart1.c.

References DISABLE, IS_FUNCTIONALSTATE_OK, and UART1_CR5_IREN.

void UART1_IrDAConfig ( UART1_IrDAMode_TypeDef UART1_IrDAMode )

Configures the UART�s IrDA interface.

Parameters:

UART1_IrDAMode specifies the IrDA mode. This parameter can be any of the UART1_IrDAMode_TypeDef values.

Return values:

None

Definition at line 285 of file stm8s_uart1.c.

References IS_UART1_IRDAMODE_OK, UART1_CR5_IRLP, and UART1_IRDAMODE_NORMAL.

void UART1_ITConfig	(	UART1_IT_TypeDef	UART1_IT,
		FunctionalState	NewState
	)

Enables or disables the specified USART interrupts.

Parameters:

UART1_IT	specifies the USART interrupt sources to be enabled or disabled. This parameter can be one of the following values: UART1_IT_TXE: Transmit Data Register empty interrupt UART1_IT_TC: Transmission complete interrupt UART1_IT_RXNE_OR: Receive Data register not empty and Overrun interrupt UART1_IT_IDLE: Idle line detection interrupt USRT1_IT_ERR: Error interrupt
NewState	new state of the specified USART interrupts. This parameter can be: ENABLE or DISABLE.

Return values:

None

< Enable the Interrupt bits according to UART1_IT mask

< Disable the interrupt bits according to UART1_IT mask

Definition at line 211 of file stm8s_uart1.c.

References DISABLE, IS_FUNCTIONALSTATE_OK, and IS_UART1_CONFIG_IT_OK.

void UART1_LINBreakDetectionConfig ( UART1_LINBreakDetectionLength_TypeDef UART1_LINBreakDetectionLength )

Sets the UART1 LIN Break detection length.

Parameters:

UART1_LINBreakDetectionLength specifies the LIN break detection length. This parameter can be any of the UART1_LINBreakDetectionLength_TypeDef values.

Return values:

None

Definition at line 329 of file stm8s_uart1.c.

References IS_UART1_LINBREAKDETECTIONLENGTH_OK, UART1_CR4_LBDL, and UART1_LINBREAKDETECTIONLENGTH_10BITS.

void UART1_LINCmd ( FunctionalState NewState )

Enables or disables the UART1�s LIN mode.

Parameters:

NewState is new state of the UART1 LIN mode. This parameter can be: ENABLE or DISABLE.

Return values:

None

Definition at line 349 of file stm8s_uart1.c.

References DISABLE, IS_FUNCTIONALSTATE_OK, and UART1_CR3_LINEN.

uint8_t UART1_ReceiveData8 ( void )

Returns the most recent received data by the UART1 peripheral.

Parameters:

None

Return values:

The	received data.

Definition at line 451 of file stm8s_uart1.c.

uint16_t UART1_ReceiveData9 ( void )

Returns the most recent received data by the UART1 peripheral.

Parameters:

None

Return values:

The	received data.

Definition at line 461 of file stm8s_uart1.c.

References UART1_CR1_R8.

void UART1_ReceiverWakeUpCmd ( FunctionalState NewState )

Determines if the UART1 is in mute mode or not.

Parameters:

NewState,: new state of the UART1 mode. This parameter can be: ENABLE or DISABLE.

Return values:

None

Definition at line 430 of file stm8s_uart1.c.

References DISABLE, IS_FUNCTIONALSTATE_OK, and UART1_CR2_RWU.

void UART1_SendBreak ( void )

Transmits break characters.

Parameters:

None

Return values:

None

Definition at line 501 of file stm8s_uart1.c.

References UART1_CR2_SBK.

void UART1_SendData8 ( uint8_t Data )

Transmits 8 bit data through the UART1 peripheral.

Parameters:

Data,: The data to transmit.

Return values:

None

Definition at line 474 of file stm8s_uart1.c.

void UART1_SendData9 ( uint16_t Data )

Transmits 9 bit data through the UART peripheral.

Parameters:

Data	: The data to transmit. This parameter should be lower than 0x1FF.

Return values:

None

< Clear the transmit data bit 8 [8]

< Write the transmit data bit [8]

< Write the transmit data bit [0:7]

Definition at line 486 of file stm8s_uart1.c.

References UART1_CR1_T8.

void UART1_SetAddress ( uint8_t UART1_Address )

Sets the address of the UART1 node.

Parameters:

UART1_Address,: Indicates the address of the UART1 node.

Return values:

None

Definition at line 511 of file stm8s_uart1.c.

References IS_UART1_ADDRESS_OK, and UART1_CR4_ADD.

void UART1_SetGuardTime ( uint8_t UART1_GuardTime )

Sets the specified UART guard time.

Note:: SmartCard Mode should be Enabled

Parameters:

UART1_GuardTime,: specifies the guard time.

Return values:

None

Definition at line 528 of file stm8s_uart1.c.

void UART1_SetPrescaler ( uint8_t UART1_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:

UART1_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 556 of file stm8s_uart1.c.

void UART1_SmartCardCmd ( FunctionalState NewState )

Enables or disables the UART1 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 371 of file stm8s_uart1.c.

References DISABLE, IS_FUNCTIONALSTATE_OK, and UART1_CR5_SCEN.

void UART1_SmartCardNACKCmd ( FunctionalState NewState )

Enables or disables NACK transmission.

Note:: This function is valid only for UART1 because is related to SmartCard mode.

Parameters:

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

Return values:

None

Definition at line 394 of file stm8s_uart1.c.

References DISABLE, IS_FUNCTIONALSTATE_OK, and UART1_CR5_NACK.

void UART1_WakeUpConfig ( UART1_WakeUp_TypeDef UART1_WakeUp )

Selects the UART1 WakeUp method.

Parameters:

UART1_WakeUp,: specifies the UART1 wakeup method. This parameter can be any of the UART1_WakeUp_TypeDef values.

Return values:

None

Definition at line 416 of file stm8s_uart1.c.

References IS_UART1_WAKEUP_OK, and UART1_CR1_WAKE.

STM8S/A Standard Peripherals Drivers: UART1_Public_Functions

STM8S/A

Functions

Function Documentation

Get in touch