Collaboration diagram for USART_Exported_Functions:

Functions
void	USART_ClearFlag (USART_TypeDef *USARTx, uint16_t USART_FLAG)
	Clears the USARTx's pending flags. More...

void	USART_ClearITPendingBit (USART_TypeDef *USARTx, uint16_t USART_IT)
	Clears the USARTx's interrupt pending bits. More...

void	USART_ClockInit (USART_TypeDef USARTx, USART_ClockInitTypeDef USART_ClockInitStruct)
	Initializes the USARTx peripheral Clock according to the specified parameters in the USART_ClockInitStruct . More...

void	USART_ClockStructInit (USART_ClockInitTypeDef *USART_ClockInitStruct)
	Fills each USART_ClockInitStruct member with its default value. More...

void	USART_Cmd (USART_TypeDef *USARTx, FunctionalState NewState)
	Enables or disables the specified USART peripheral. More...

void	USART_DeInit (USART_TypeDef *USARTx)
	Deinitializes the USARTx peripheral registers to their default reset values. More...

void	USART_DMACmd (USART_TypeDef *USARTx, uint16_t USART_DMAReq, FunctionalState NewState)
	Enables or disables the USART's DMA interface. More...

FlagStatus	USART_GetFlagStatus (USART_TypeDef *USARTx, uint16_t USART_FLAG)
	Checks whether the specified USART flag is set or not. More...

ITStatus	USART_GetITStatus (USART_TypeDef *USARTx, uint16_t USART_IT)
	Checks whether the specified USART interrupt has occurred or not. More...

void	USART_HalfDuplexCmd (USART_TypeDef *USARTx, FunctionalState NewState)
	Enables or disables the USART's Half Duplex communication. More...

void	USART_Init (USART_TypeDef USARTx, USART_InitTypeDef USART_InitStruct)
	Initializes the USARTx peripheral according to the specified parameters in the USART_InitStruct . More...

void	USART_IrDACmd (USART_TypeDef *USARTx, FunctionalState NewState)
	Enables or disables the USART's IrDA interface. More...

void	USART_IrDAConfig (USART_TypeDef *USARTx, uint16_t USART_IrDAMode)
	Configures the USART's IrDA interface. More...

void	USART_ITConfig (USART_TypeDef *USARTx, uint16_t USART_IT, FunctionalState NewState)
	Enables or disables the specified USART interrupts. More...

void	USART_LINBreakDetectLengthConfig (USART_TypeDef *USARTx, uint16_t USART_LINBreakDetectLength)
	Sets the USART LIN Break detection length. More...

void	USART_LINCmd (USART_TypeDef *USARTx, FunctionalState NewState)
	Enables or disables the USART's LIN mode. More...

void	USART_OneBitMethodCmd (USART_TypeDef *USARTx, FunctionalState NewState)
	Enables or disables the USART's one bit sampling method. More...

void	USART_OverSampling8Cmd (USART_TypeDef *USARTx, FunctionalState NewState)
	Enables or disables the USART's 8x oversampling mode. More...

uint16_t	USART_ReceiveData (USART_TypeDef *USARTx)
	Returns the most recent received data by the USARTx peripheral. More...

void	USART_ReceiverWakeUpCmd (USART_TypeDef *USARTx, FunctionalState NewState)
	Determines if the USART is in mute mode or not. More...

void	USART_SendBreak (USART_TypeDef *USARTx)
	Transmits break characters. More...

void	USART_SendData (USART_TypeDef *USARTx, uint16_t Data)
	Transmits single data through the USARTx peripheral. More...

void	USART_SetAddress (USART_TypeDef *USARTx, uint8_t USART_Address)
	Sets the address of the USART node. More...

void	USART_SetGuardTime (USART_TypeDef *USARTx, uint8_t USART_GuardTime)
	Sets the specified USART guard time. More...

void	USART_SetPrescaler (USART_TypeDef *USARTx, uint8_t USART_Prescaler)
	Sets the system clock prescaler. More...

void	USART_SmartCardCmd (USART_TypeDef *USARTx, FunctionalState NewState)
	Enables or disables the USART's Smart Card mode. More...

void	USART_SmartCardNACKCmd (USART_TypeDef *USARTx, FunctionalState NewState)
	Enables or disables NACK transmission. More...

void	USART_StructInit (USART_InitTypeDef *USART_InitStruct)
	Fills each USART_InitStruct member with its default value. More...

void	USART_WakeUpConfig (USART_TypeDef *USARTx, uint16_t USART_WakeUp)
	Selects the USART WakeUp method. More...

Detailed Description

Function Documentation

void USART_ClearFlag	(	USART_TypeDef *	USARTx,
		uint16_t	USART_FLAG
	)

Clears the USARTx's pending flags.

Parameters

USARTx	where x can be 1, 2, 3, 4, 5, 6, 7 or 8 to select the USART or UART peripheral.
USART_FLAG	specifies the flag to clear. This parameter can be any combination of the following values: USART_FLAG_CTS: CTS Change flag (not available for UART4 and UART5). USART_FLAG_LBD: LIN Break detection flag. USART_FLAG_TC: Transmission Complete flag. USART_FLAG_RXNE: Receive data register not empty flag.

Note: 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 (USART_GetFlagStatus()) followed by a read operation to USART_DR register (USART_ReceiveData()).; RXNE flag can be also cleared by a read to the USART_DR register (USART_ReceiveData()).; TC flag can be also cleared by software sequence: a read operation to USART_SR register (USART_GetFlagStatus()) followed by a write operation to USART_DR register (USART_SendData()).; TXE flag is cleared only by a write to the USART_DR register (USART_SendData()).

Return values

None

Parameters

USARTx	Select the USART or the UART peripheral. This parameter can be one of the following values: USART1, USART2, USART3, UART4 or UART5.
USART_FLAG	specifies the flag to clear. This parameter can be any combination of the following values: USART_FLAG_CTS: CTS Change flag (not available for UART4 and UART5). USART_FLAG_LBD: LIN Break detection flag. USART_FLAG_TC: Transmission Complete flag. USART_FLAG_RXNE: Receive data register not empty flag.

Note

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 (USART_GetFlagStatus()) followed by a read operation to USART_DR register (USART_ReceiveData()).
RXNE flag can be also cleared by a read to the USART_DR register (USART_ReceiveData()).
TC flag can be also cleared by software sequence: a read operation to USART_SR register (USART_GetFlagStatus()) followed by a write operation to USART_DR register (USART_SendData()).
TXE flag is cleared only by a write to the USART_DR register (USART_SendData()).

Return values

None

Definition at line 1344 of file stm32f4xx_usart.c.

void USART_ClearITPendingBit	(	USART_TypeDef *	USARTx,
		uint16_t	USART_IT
	)

Clears the USARTx's interrupt pending bits.

Parameters

USARTx	where x can be 1, 2, 3, 4, 5, 6, 7 or 8 to select the USART or UART peripheral.
USART_IT	specifies the interrupt pending bit to clear. This parameter can be one of the following values: USART_IT_CTS: CTS change interrupt (not available for UART4 and UART5) USART_IT_LBD: LIN Break detection interrupt USART_IT_TC: Transmission complete interrupt. USART_IT_RXNE: Receive Data register not empty interrupt.

Note: PE (Parity error), FE (Framing error), NE (Noise error), ORE (OverRun error) and IDLE (Idle line detected) pending bits are cleared by software sequence: a read operation to USART_SR register (USART_GetITStatus()) followed by a read operation to USART_DR register (USART_ReceiveData()).; RXNE pending bit can be also cleared by a read to the USART_DR register (USART_ReceiveData()).; TC pending bit can be also cleared by software sequence: a read operation to USART_SR register (USART_GetITStatus()) followed by a write operation to USART_DR register (USART_SendData()).; TXE pending bit is cleared only by a write to the USART_DR register (USART_SendData()).

Return values

None

Parameters

USARTx	Select the USART or the UART peripheral. This parameter can be one of the following values: USART1, USART2, USART3, UART4 or UART5.
USART_IT	specifies the interrupt pending bit to clear. This parameter can be one of the following values: USART_IT_CTS: CTS change interrupt (not available for UART4 and UART5) USART_IT_LBD: LIN Break detection interrupt USART_IT_TC: Transmission complete interrupt. USART_IT_RXNE: Receive Data register not empty interrupt.

Note

PE (Parity error), FE (Framing error), NE (Noise error), ORE (OverRun error) and IDLE (Idle line detected) pending bits are cleared by software sequence: a read operation to USART_SR register (USART_GetITStatus()) followed by a read operation to USART_DR register (USART_ReceiveData()).
RXNE pending bit can be also cleared by a read to the USART_DR register (USART_ReceiveData()).
TC pending bit can be also cleared by software sequence: a read operation to USART_SR register (USART_GetITStatus()) followed by a write operation to USART_DR register (USART_SendData()).
TXE pending bit is cleared only by a write to the USART_DR register (USART_SendData()).

Return values

None

Definition at line 1452 of file stm32f4xx_usart.c.

void USART_ClockInit	(	USART_TypeDef *	USARTx,
		USART_ClockInitTypeDef *	USART_ClockInitStruct
	)

Initializes the USARTx peripheral Clock according to the specified parameters in the USART_ClockInitStruct .

Initializes the USARTx peripheral Clock according to the specified parameters in the USART_ClockInitStruct.

Parameters

USARTx	where x can be 1, 2, 3 or 6 to select the USART peripheral.
USART_ClockInitStruct	pointer to a USART_ClockInitTypeDef structure that contains the configuration information for the specified USART peripheral.

Note: The Smart Card and Synchronous modes are not available for UART4 and UART5.

Return values

None

Parameters

USARTx	Select the USART peripheral. This parameter can be one of the following values: USART1 or USART2 or USART3.
USART_ClockInitStruct	pointer to a USART_ClockInitTypeDef structure that contains the configuration information for the specified USART peripheral.

Return values

None	Initializes the USARTx peripheral Clock according to the specified parameters in the USART_ClockInitStruct.

Parameters

USARTx	where x can be 1, 2, 3 to select the USART peripheral.
USART_ClockInitStruct	pointer to a USART_ClockInitTypeDef structure that contains the configuration information for the specified USART peripheral.

Note: The Smart Card and Synchronous modes are not available for UART4 and UART5.

Return values

None

Definition at line 379 of file stm32f4xx_usart.c.

void USART_ClockStructInit ( USART_ClockInitTypeDef * USART_ClockInitStruct )

Fills each USART_ClockInitStruct member with its default value.

Parameters

USART_ClockInitStruct pointer to a USART_ClockInitTypeDef structure which will be initialized.

Return values

None

Definition at line 410 of file stm32f4xx_usart.c.

void USART_Cmd	(	USART_TypeDef *	USARTx,
		FunctionalState	NewState
	)

Enables or disables the specified USART peripheral.

Parameters

USARTx	where x can be 1, 2, 3, 4, 5, 6, 7 or 8 to select the USART or UART peripheral.
NewState	new state of the USARTx peripheral. This parameter can be: ENABLE or DISABLE.

Return values

None

Parameters

USARTx	Select the USART peripheral. This parameter can be one of the following values: USART1 or USART2 or USART3 or UART4 or UART5.
NewState	new state of the USARTx peripheral. This parameter can be: ENABLE or DISABLE.

Return values

None

Parameters

USARTx	Select the USART or the UART peripheral. This parameter can be one of the following values: USART1, USART2, USART3, UART4 or UART5.
NewState	new state of the USARTx peripheral. This parameter can be: ENABLE or DISABLE.

Return values

None

Definition at line 427 of file stm32f4xx_usart.c.

void USART_DeInit ( USART_TypeDef * USARTx )

Deinitializes the USARTx peripheral registers to their default reset values.

Parameters

USARTx where x can be 1, 2, 3, 4, 5, 6, 7 or 8 to select the USART or UART peripheral.

Return values

None

Parameters

USARTx Select the USART peripheral. This parameter can be one of the following values: USART1 or USART2 or USART3 or UART4 or UART5.

Return values

None

Parameters

USARTx Select the USART or the UART peripheral. This parameter can be one of the following values: USART1, USART2, USART3, UART4 or UART5.

Return values

None

Definition at line 187 of file stm32f4xx_usart.c.

void USART_DMACmd	(	USART_TypeDef *	USARTx,
		uint16_t	USART_DMAReq,
		FunctionalState	NewState
	)

Enables or disables the USART's DMA interface.

Parameters

USARTx	where x can be 1, 2, 3, 4, 5, 6, 7 or 8 to select the USART or UART peripheral.
USART_DMAReq	specifies the DMA request. This parameter can be any combination of the following values: USART_DMAReq_Tx: USART DMA transmit request USART_DMAReq_Rx: USART DMA receive request
NewState	new state of the DMA Request sources. This parameter can be: ENABLE or DISABLE.

Return values

None	Enables or disables the USART's DMA interface.

Parameters

USARTx	Select the USART or the UART peripheral. This parameter can be one of the following values: USART1, USART2, USART3, UART4 or UART5.
USART_DMAReq	specifies the DMA request. This parameter can be any combination of the following values: USART_DMAReq_Tx: USART DMA transmit request USART_DMAReq_Rx: USART DMA receive request
NewState	new state of the DMA Request sources. This parameter can be: ENABLE or DISABLE.

Note: The DMA mode is not available for UART5 except in the STM32 High density value line devices(STM32F10X_HD_VL).

Return values

None

Definition at line 1099 of file stm32f4xx_usart.c.

FlagStatus USART_GetFlagStatus	(	USART_TypeDef *	USARTx,
		uint16_t	USART_FLAG
	)

Checks whether the specified USART flag is set or not.

Parameters

USARTx where x can be 1, 2, 3, 4, 5, 6, 7 or 8 to select the USART or UART peripheral.

USART_FLAG

specifies the flag to check. This parameter can be one of the following values:

USART_FLAG_CTS: CTS Change flag (not available for UART4 and UART5)
USART_FLAG_LBD: LIN Break detection flag
USART_FLAG_TXE: Transmit data register empty flag
USART_FLAG_TC: Transmission Complete flag
USART_FLAG_RXNE: Receive data register not empty flag
USART_FLAG_IDLE: Idle Line detection flag
USART_FLAG_ORE: OverRun Error flag
USART_FLAG_NE: Noise Error flag
USART_FLAG_FE: Framing Error flag
USART_FLAG_PE: Parity Error flag

Return values

The	new state of USART_FLAG (SET or RESET).

Parameters

USARTx Select the USART or the UART peripheral. This parameter can be one of the following values: USART1, USART2, USART3, UART4 or UART5.

USART_FLAG

specifies the flag to check. This parameter can be one of the following values:

USART_FLAG_CTS: CTS Change flag (not available for UART4 and UART5)
USART_FLAG_LBD: LIN Break detection flag
USART_FLAG_TXE: Transmit data register empty flag
USART_FLAG_TC: Transmission Complete flag
USART_FLAG_RXNE: Receive data register not empty flag
USART_FLAG_IDLE: Idle Line detection flag
USART_FLAG_ORE: OverRun Error flag
USART_FLAG_NE: Noise Error flag
USART_FLAG_FE: Framing Error flag
USART_FLAG_PE: Parity Error flag

Return values

The	new state of USART_FLAG (SET or RESET).

Definition at line 1295 of file stm32f4xx_usart.c.

ITStatus USART_GetITStatus	(	USART_TypeDef *	USARTx,
		uint16_t	USART_IT
	)

Checks whether the specified USART interrupt has occurred or not.

Parameters

USARTx where x can be 1, 2, 3, 4, 5, 6, 7 or 8 to select the USART or UART peripheral.

USART_IT

specifies the USART interrupt source to check. This parameter can be one of the following values:

USART_IT_CTS: CTS change interrupt (not available for UART4 and UART5)
USART_IT_LBD: LIN Break detection interrupt
USART_IT_TXE: Transmit Data Register empty interrupt
USART_IT_TC: Transmission complete interrupt
USART_IT_RXNE: Receive Data register not empty interrupt
USART_IT_IDLE: Idle line detection interrupt
USART_IT_ORE_RX : OverRun Error interrupt if the RXNEIE bit is set
USART_IT_ORE_ER : OverRun Error interrupt if the EIE bit is set
USART_IT_NE: Noise Error interrupt
USART_IT_FE: Framing Error interrupt
USART_IT_PE: Parity Error interrupt

Return values

The	new state of USART_IT (SET or RESET).

Parameters

USARTx Select the USART or the UART peripheral. This parameter can be one of the following values: USART1, USART2, USART3, UART4 or UART5.

USART_IT

specifies the USART interrupt source to check. This parameter can be one of the following values:

USART_IT_CTS: CTS change interrupt (not available for UART4 and UART5)
USART_IT_LBD: LIN Break detection interrupt
USART_IT_TXE: Tansmit Data Register empty interrupt
USART_IT_TC: Transmission complete interrupt
USART_IT_RXNE: Receive Data register not empty interrupt
USART_IT_IDLE: Idle line detection interrupt
USART_IT_ORE: OverRun Error interrupt
USART_IT_NE: Noise Error interrupt
USART_IT_FE: Framing Error interrupt
USART_IT_PE: Parity Error interrupt

Return values

The	new state of USART_IT (SET or RESET).

Definition at line 1378 of file stm32f4xx_usart.c.

void USART_HalfDuplexCmd	(	USART_TypeDef *	USARTx,
		FunctionalState	NewState
	)

Enables or disables the USART's Half Duplex communication.

Parameters

USARTx	where x can be 1, 2, 3, 4, 5, 6, 7 or 8 to select the USART or UART peripheral.
NewState	new state of the USART Communication. This parameter can be: ENABLE or DISABLE.

Return values

None	Enables or disables the USART's Half Duplex communication.

Parameters

USARTx	Select the USART or the UART peripheral. This parameter can be one of the following values: USART1, USART2, USART3, UART4 or UART5.
NewState	new state of the USART Communication. This parameter can be: ENABLE or DISABLE.

Return values

None

Parameters

USARTx	Select the USART peripheral. This parameter can be one of the following values: USART1 or USART2 or USART3 or UART4 or UART5.
NewState	new state of the USART Communication. This parameter can be: ENABLE or DISABLE.

Return values

None

Definition at line 836 of file stm32f4xx_usart.c.

void USART_Init	(	USART_TypeDef *	USARTx,
		USART_InitTypeDef *	USART_InitStruct
	)

Initializes the USARTx peripheral according to the specified parameters in the USART_InitStruct .

Parameters

USARTx	where x can be 1, 2, 3, 4, 5, 6, 7 or 8 to select the USART or UART peripheral.
USART_InitStruct	pointer to a USART_InitTypeDef structure that contains the configuration information for the specified USART peripheral.

Return values

None

Parameters

USARTx	Select the USART peripheral. This parameter can be one of the following values: USART1 or USART2 or USART3 or UART4 or UART5.
USART_InitStruct	pointer to a USART_InitTypeDef structure that contains the configuration information for the specified USART peripheral.

Return values

None

Parameters

USARTx	Select the USART or the UART peripheral. This parameter can be one of the following values: USART1, USART2, USART3, UART4 or UART5.
USART_InitStruct	pointer to a USART_InitTypeDef structure that contains the configuration information for the specified USART peripheral.

Return values

None

Definition at line 246 of file stm32f4xx_usart.c.

void USART_IrDACmd	(	USART_TypeDef *	USARTx,
		FunctionalState	NewState
	)

Enables or disables the USART's IrDA interface.

Parameters

USARTx	where x can be 1, 2, 3, 4, 5, 6, 7 or 8 to select the USART or UART peripheral.
NewState	new state of the IrDA mode. This parameter can be: ENABLE or DISABLE.

Return values

None

Parameters

USARTx	Select the USART or the UART peripheral. This parameter can be one of the following values: USART1, USART2, USART3, UART4 or UART5.
NewState	new state of the IrDA mode. This parameter can be: ENABLE or DISABLE.

Return values

None

Parameters

USARTx	Select the USART peripheral. This parameter can be one of the following values: USART1 or USART2 or USART3 or UART4 or UART5.
NewState	new state of the IrDA mode. This parameter can be: ENABLE or DISABLE.

Return values

None

Definition at line 1053 of file stm32f4xx_usart.c.

void USART_IrDAConfig	(	USART_TypeDef *	USARTx,
		uint16_t	USART_IrDAMode
	)

Configures the USART's IrDA interface.

Parameters

USARTx	where x can be 1, 2, 3, 4, 5, 6, 7 or 8 to select the USART or UART peripheral.
USART_IrDAMode	specifies the IrDA mode. This parameter can be one of the following values: USART_IrDAMode_LowPower USART_IrDAMode_Normal

Return values

None

Parameters

USARTx	Select the USART or the UART peripheral. This parameter can be one of the following values: USART1, USART2, USART3, UART4 or UART5.
USART_IrDAMode	specifies the IrDA mode. This parameter can be one of the following values: USART_IrDAMode_LowPower USART_IrDAMode_Normal

Return values

None

Definition at line 1035 of file stm32f4xx_usart.c.

void USART_ITConfig	(	USART_TypeDef *	USARTx,
		uint16_t	USART_IT,
		FunctionalState	NewState
	)

Enables or disables the specified USART interrupts.

Parameters

USARTx	where x can be 1, 2, 3, 4, 5, 6, 7 or 8 to select the USART or UART peripheral.
USART_IT	specifies the USART interrupt sources to be enabled or disabled. This parameter can be one of the following values: USART_IT_CTS: CTS change interrupt USART_IT_LBD: LIN Break detection interrupt USART_IT_TXE: Transmit Data Register empty interrupt USART_IT_TC: Transmission complete interrupt USART_IT_RXNE: Receive Data register not empty interrupt USART_IT_IDLE: Idle line detection interrupt USART_IT_PE: Parity Error interrupt USART_IT_ERR: Error interrupt(Frame error, noise error, overrun error)
NewState	new state of the specified USARTx interrupts. This parameter can be: ENABLE or DISABLE.

Return values

None

Parameters

USARTx	Select the USART or the UART peripheral. This parameter can be one of the following values: USART1, USART2, USART3, UART4 or UART5.
USART_IT	specifies the USART interrupt sources to be enabled or disabled. This parameter can be one of the following values: USART_IT_CTS: CTS change interrupt (not available for UART4 and UART5) USART_IT_LBD: LIN Break detection interrupt USART_IT_TXE: Transmit Data Register empty interrupt USART_IT_TC: Transmission complete interrupt USART_IT_RXNE: Receive Data register not empty interrupt USART_IT_IDLE: Idle line detection interrupt USART_IT_PE: Parity Error interrupt USART_IT_ERR: Error interrupt(Frame error, noise error, overrun error)
NewState	new state of the specified USARTx interrupts. This parameter can be: ENABLE or DISABLE.

Return values

None

Definition at line 1231 of file stm32f4xx_usart.c.

void USART_LINBreakDetectLengthConfig	(	USART_TypeDef *	USARTx,
		uint16_t	USART_LINBreakDetectLength
	)

Sets the USART LIN Break detection length.

Parameters

USARTx	where x can be 1, 2, 3, 4, 5, 6, 7 or 8 to select the USART or UART peripheral.
USART_LINBreakDetectLength	specifies the LIN break detection length. This parameter can be one of the following values: USART_LINBreakDetectLength_10b: 10-bit break detection USART_LINBreakDetectLength_11b: 11-bit break detection

Return values

None

Parameters

USARTx	Select the USART or the UART peripheral. This parameter can be one of the following values: USART1, USART2, USART3, UART4 or UART5.
USART_LINBreakDetectLength	specifies the LIN break detection length. This parameter can be one of the following values: USART_LINBreakDetectLength_10b: 10-bit break detection USART_LINBreakDetectLength_11b: 11-bit break detection

Return values

None

Definition at line 741 of file stm32f4xx_usart.c.

void USART_LINCmd	(	USART_TypeDef *	USARTx,
		FunctionalState	NewState
	)

Enables or disables the USART's LIN mode.

Parameters

USARTx	where x can be 1, 2, 3, 4, 5, 6, 7 or 8 to select the USART or UART peripheral.
NewState	new state of the USART LIN mode. This parameter can be: ENABLE or DISABLE.

Return values

None	Enables or disables the USART's LIN mode.

Parameters

USARTx	Select the USART or the UART peripheral. This parameter can be one of the following values: USART1, USART2, USART3, UART4 or UART5.
NewState	new state of the USART LIN mode. This parameter can be: ENABLE or DISABLE.

Return values

None

Parameters

USARTx	Select the USART peripheral. This parameter can be one of the following values: USART1 or USART2 or USART3 or UART4 or UART5.
NewState	new state of the USART LIN mode. This parameter can be: ENABLE or DISABLE.

Return values

None

Definition at line 759 of file stm32f4xx_usart.c.

void USART_OneBitMethodCmd	(	USART_TypeDef *	USARTx,
		FunctionalState	NewState
	)

Enables or disables the USART's one bit sampling method.

Parameters

USARTx	where x can be 1, 2, 3, 4, 5, 6, 7 or 8 to select the USART or UART peripheral.
NewState	new state of the USART one bit sampling method. This parameter can be: ENABLE or DISABLE.

Return values

None

Parameters

USARTx	Select the USART peripheral. This parameter can be one of the following values: USART1 or USART2 or USART3 or UART4 or UART5.
NewState	new state of the USART one bit sampling method. This parameter can be: ENABLE or DISABLE.

Note: This function has to be called before calling USART_Cmd() function.

Return values

None

Parameters

USARTx	Select the USART or the UART peripheral. This parameter can be one of the following values: USART1, USART2, USART3, UART4 or UART5.
NewState	new state of the USART one bit sampling method. This parameter can be: ENABLE or DISABLE.

Return values

None

Definition at line 500 of file stm32f4xx_usart.c.

void USART_OverSampling8Cmd	(	USART_TypeDef *	USARTx,
		FunctionalState	NewState
	)

Enables or disables the USART's 8x oversampling mode.

Note: This function has to be called before calling USART_Init() function in order to have correct baudrate Divider value.

Parameters

USARTx	where x can be 1, 2, 3, 4, 5, 6, 7 or 8 to select the USART or UART peripheral.
NewState	new state of the USART 8x oversampling mode. This parameter can be: ENABLE or DISABLE.

Return values

None

Parameters

USARTx	Select the USART peripheral. This parameter can be one of the following values: USART1 or USART2 or USART3 or UART4 or UART5.
NewState	new state of the USART 8x oversampling mode. This parameter can be: ENABLE or DISABLE.

Note: This function has to be called before calling USART_Init() function in order to have correct baudrate Divider value.

Return values

None

Parameters

USARTx	Select the USART or the UART peripheral. This parameter can be one of the following values: USART1, USART2, USART3, UART4 or UART5.
NewState	new state of the USART one bit sampling method. This parameter can be: ENABLE or DISABLE.

Note: This function has to be called before calling USART_Init() function in order to have correct baudrate Divider value.

Return values

None

Definition at line 474 of file stm32f4xx_usart.c.

uint16_t USART_ReceiveData ( USART_TypeDef * USARTx )

Returns the most recent received data by the USARTx peripheral.

Parameters

USARTx where x can be 1, 2, 3, 4, 5, 6, 7 or 8 to select the USART or UART peripheral.

Return values

The	received data.

Parameters

USARTx Select the USART or the UART peripheral. This parameter can be one of the following values: USART1, USART2, USART3, UART4 or UART5.

Return values

The	received data.

Parameters

USARTx Select the USART peripheral. This parameter can be one of the following values: USART1 or USART2 or USART3 or UART4 or UART5.

Return values

The	received data.

Definition at line 573 of file stm32f4xx_usart.c.

void USART_ReceiverWakeUpCmd	(	USART_TypeDef *	USARTx,
		FunctionalState	NewState
	)

Determines if the USART is in mute mode or not.

Parameters

USARTx	where x can be 1, 2, 3, 4, 5, 6, 7 or 8 to select the USART or UART peripheral.
NewState	new state of the USART mute mode. This parameter can be: ENABLE or DISABLE.

Return values

None

Parameters

USARTx	Select the USART or the UART peripheral. This parameter can be one of the following values: USART1, USART2, USART3, UART4 or UART5.
NewState	new state of the USART mute mode. This parameter can be: ENABLE or DISABLE.

Return values

None

Definition at line 645 of file stm32f4xx_usart.c.

void USART_SendBreak ( USART_TypeDef * USARTx )

Transmits break characters.

Parameters

USARTx where x can be 1, 2, 3, 4, 5, 6, 7 or 8 to select the USART or UART peripheral.

Return values

None

Parameters

USARTx Select the USART or the UART peripheral. This parameter can be one of the following values: USART1, USART2, USART3, UART4 or UART5.

Return values

None

Definition at line 783 of file stm32f4xx_usart.c.

void USART_SendData	(	USART_TypeDef *	USARTx,
		uint16_t	Data
	)

Transmits single data through the USARTx peripheral.

Parameters

USARTx	where x can be 1, 2, 3, 4, 5, 6, 7 or 8 to select the USART or UART peripheral.
Data	the data to transmit.

Return values

None

Parameters

USARTx	Select the USART or the UART peripheral. This parameter can be one of the following values: USART1, USART2, USART3, UART4 or UART5.
Data	the data to transmit.

Return values

None

Parameters

USARTx	Select the USART peripheral. This parameter can be one of the following values: USART1 or USART2 or USART3 or UART4 or UART5.
Data	the data to transmit.

Return values

None

Definition at line 557 of file stm32f4xx_usart.c.

void USART_SetAddress	(	USART_TypeDef *	USARTx,
		uint8_t	USART_Address
	)

Sets the address of the USART node.

Parameters

USARTx	where x can be 1, 2, 3, 4, 5, 6, 7 or 8 to select the USART or UART peripheral.
USART_Address	Indicates the address of the USART node.

Return values

None

Parameters

USARTx	Select the USART or the UART peripheral. This parameter can be one of the following values: USART1, USART2, USART3, UART4 or UART5.
USART_Address	Indicates the address of the USART node.

Return values

None

Parameters

USARTx	Select the USART peripheral. This parameter can be one of the following values: USART1 or USART2 or USART3 or UART4 or UART5.
USART_Address	Indicates the address of the USART node.

Return values

None

Definition at line 625 of file stm32f4xx_usart.c.

void USART_SetGuardTime	(	USART_TypeDef *	USARTx,
		uint8_t	USART_GuardTime
	)

Sets the specified USART guard time.

Parameters

USARTx	where x can be 1, 2, 3 or 6 to select the USART or UART peripheral.
USART_GuardTime	specifies the guard time.

Return values

None

Parameters

USARTx	where x can be 1, 2 or 3 to select the USART peripheral.
USART_GuardTime	specifies the guard time.

Note: The guard time bits are not available for UART4 and UART5.

Return values

None

Parameters

USARTx	Select the USART peripheral. This parameter can be one of the following values: USART1 or USART2 or USART3.
USART_GuardTime	specifies the guard time.

Return values

None

Definition at line 920 of file stm32f4xx_usart.c.

void USART_SetPrescaler	(	USART_TypeDef *	USARTx,
		uint8_t	USART_Prescaler
	)

Sets the system clock prescaler.

Parameters

USARTx	where x can be 1, 2, 3, 4, 5, 6, 7 or 8 to select the USART or UART peripheral.
USART_Prescaler	specifies the prescaler clock.

Note: The function is used for IrDA mode with UART4 and UART5.

Return values

None

Parameters

USARTx	Select the USART peripheral. This parameter can be one of the following values: USART1 or USART2 or USART3 or UART4 or UART5.
USART_Prescaler	specifies the prescaler clock.

Note: This function has to be called before calling USART_Cmd() function.

Return values

None

Parameters

USARTx	Select the USART or the UART peripheral. This parameter can be one of the following values: USART1, USART2, USART3, UART4 or UART5.
USART_Prescaler	specifies the prescaler clock.

Note: The function is used for IrDA mode with UART4 and UART5.

Return values

None

Definition at line 453 of file stm32f4xx_usart.c.

void USART_SmartCardCmd	(	USART_TypeDef *	USARTx,
		FunctionalState	NewState
	)

Enables or disables the USART's Smart Card mode.

Parameters

USARTx	where x can be 1, 2, 3 or 6 to select the USART or UART peripheral.
NewState	new state of the Smart Card mode. This parameter can be: ENABLE or DISABLE.

Return values

None	Enables or disables the USART's Smart Card mode.

Parameters

USARTx	where x can be 1, 2 or 3 to select the USART peripheral.
NewState	new state of the Smart Card mode. This parameter can be: ENABLE or DISABLE.

Note: The Smart Card mode is not available for UART4 and UART5.

Return values

None

Parameters

USARTx	Select the USART peripheral. This parameter can be one of the following values: USART1 or USART2 or USART3.
NewState	new state of the Smart Card mode. This parameter can be: ENABLE or DISABLE.

Return values

None

Definition at line 939 of file stm32f4xx_usart.c.

void USART_SmartCardNACKCmd	(	USART_TypeDef *	USARTx,
		FunctionalState	NewState
	)

Enables or disables NACK transmission.

Parameters

USARTx	where x can be 1, 2, 3 or 6 to select the USART or UART peripheral.
NewState	new state of the NACK transmission. This parameter can be: ENABLE or DISABLE.

Return values

None

Parameters

USARTx	where x can be 1, 2 or 3 to select the USART peripheral.
NewState	new state of the NACK transmission. This parameter can be: ENABLE or DISABLE.

Note: The Smart Card mode is not available for UART4 and UART5.

Return values

None

Parameters

USARTx	Select the USART peripheral. This parameter can be one of the following values: USART1 or USART2 or USART3.
NewState	new state of the NACK transmission. This parameter can be: ENABLE or DISABLE.

Return values

None

Definition at line 964 of file stm32f4xx_usart.c.

void USART_StructInit ( USART_InitTypeDef * USART_InitStruct )

Fills each USART_InitStruct member with its default value.

Parameters

USART_InitStruct pointer to a USART_InitTypeDef structure which will be initialized.

Return values

None

Definition at line 359 of file stm32f4xx_usart.c.

void USART_WakeUpConfig	(	USART_TypeDef *	USARTx,
		uint16_t	USART_WakeUp
	)

Selects the USART WakeUp method.

Parameters

USARTx	where x can be 1, 2, 3, 4, 5, 6, 7 or 8 to select the USART or UART peripheral.
USART_WakeUp	specifies the USART wakeup method. This parameter can be one of the following values: USART_WakeUp_IdleLine: WakeUp by an idle line detection USART_WakeUp_AddressMark: WakeUp by an address mark

Return values

None

Parameters

USARTx	Select the USART or the UART peripheral. This parameter can be one of the following values: USART1, USART2, USART3, UART4 or UART5.
USART_WakeUp	specifies the USART wakeup method. This parameter can be one of the following values: USART_WakeUp_IdleLine: WakeUp by an idle line detection USART_WakeUp_AddressMark: WakeUp by an address mark

Return values

None

Definition at line 672 of file stm32f4xx_usart.c.