USART driver modules. More...

Collaboration diagram for USART:

Modules
	USART_Exported_Constants

	USART_Private_Functions

	USART_Exported_Types

	USART_Exported_Macros

	USART_Exported_Functions

	USART_Private_TypesDefinitions

	USART_Private_Defines

	USART_Private_Macros

	USART_Private_Variables

	USART_Private_FunctionPrototypes

Classes
struct	USART_ClockInitTypeDef
	USART Clock Init Structure definition. More...

struct	USART_InitTypeDef
	USART Init Structure definition. More...

Macros
#define	CR1_CLEAR_MASK

#define	CR1_CLEAR_MASK

#define	CR2_CLOCK_CLEAR_MASK

#define	CR2_CLOCK_CLEAR_MASK

#define	CR3_CLEAR_MASK ((uint32_t)(USART_CR3_RTSE \| USART_CR3_CTSE))

#define	CR3_CLEAR_MASK ((uint16_t)(USART_CR3_RTSE \| USART_CR3_CTSE))

#define	IT_MASK ((uint32_t)0x000000FF)

#define	IT_MASK ((uint16_t)0x001F)

Functions
void	USART_AddressDetectionConfig (USART_TypeDef *USARTx, uint32_t USART_AddressLength)
	Configure the the USART Address detection length. More...

void	USART_AutoBaudRateCmd (USART_TypeDef *USARTx, FunctionalState NewState)
	Enables or disables the Auto Baud Rate. More...

void	USART_AutoBaudRateConfig (USART_TypeDef *USARTx, uint32_t USART_AutoBaudRate)
	Selects the USART auto baud rate method. More...

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

void	USART_ClearFlag (USART_TypeDef *USARTx, uint32_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_ClearITPendingBit (USART_TypeDef *USARTx, uint32_t USART_IT)
	Clears the USARTx's interrupt pending bits. More...

void	USART_DataInvCmd (USART_TypeDef *USARTx, FunctionalState NewState)
	Enables or disables the binary data inversion. More...

void	USART_DECmd (USART_TypeDef *USARTx, FunctionalState NewState)
	Enables or disables the USART's DE functionality. More...

void	USART_DEPolarityConfig (USART_TypeDef *USARTx, uint32_t USART_DEPolarity)
	Configures the USART's DE polarity. More...

void	USART_DirectionModeCmd (USART_TypeDef *USARTx, uint32_t USART_DirectionMode, FunctionalState NewState)
	Enables or disables the USART's transmitter or receiver. More...

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

void	USART_DMACmd (USART_TypeDef *USARTx, uint32_t USART_DMAReq, FunctionalState NewState)
	Enables or disables the USART's DMA interface. More...

void	USART_DMAReceptionErrorConfig (USART_TypeDef *USARTx, uint32_t USART_DMAOnError)
	Enables or disables the USART's DMA interface when reception error occurs. More...

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

FlagStatus	USART_GetFlagStatus (USART_TypeDef *USARTx, uint32_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...

ITStatus	USART_GetITStatus (USART_TypeDef *USARTx, uint32_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_InvPinCmd (USART_TypeDef *USARTx, uint32_t USART_InvPin, FunctionalState NewState)
	Enables or disables the Pin(s) active level inversion. 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_IrDAConfig (USART_TypeDef *USARTx, uint32_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_ITConfig (USART_TypeDef *USARTx, uint32_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_LINBreakDetectLengthConfig (USART_TypeDef *USARTx, uint32_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_MSBFirstCmd (USART_TypeDef *USARTx, FunctionalState NewState)
	Enables or disables the USART's most significant bit first transmitted/received following the start bit. More...

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

void	USART_MuteModeWakeUpConfig (USART_TypeDef *USARTx, uint32_t USART_WakeUp)
	Selects the USART WakeUp method from mute mode. More...

void	USART_OverrunDetectionConfig (USART_TypeDef *USARTx, uint32_t USART_OVRDetection)
	Enables or disables the USART's Overrun detection. More...

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

void	USART_ReceiverTimeOutCmd (USART_TypeDef *USARTx, FunctionalState NewState)
	Enables or disables the receiver Time Out feature. More...

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

void	USART_RequestCmd (USART_TypeDef *USARTx, uint32_t USART_Request, FunctionalState NewState)
	Enables the specified USART's Request. 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_SetAutoRetryCount (USART_TypeDef *USARTx, uint8_t USART_AutoCount)
	Sets the Smart Card number of retries in transmit and receive. More...

void	USART_SetBlockLength (USART_TypeDef *USARTx, uint8_t USART_BlockLength)
	Sets the Smart Card Block length. More...

void	USART_SetDEAssertionTime (USART_TypeDef *USARTx, uint32_t USART_DEAssertionTime)
	Sets the specified RS485 DE assertion time. More...

void	USART_SetDEDeassertionTime (USART_TypeDef *USARTx, uint32_t USART_DEDeassertionTime)
	Sets the specified RS485 DE deassertion time. More...

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

void	USART_SetReceiverTimeOut (USART_TypeDef *USARTx, uint32_t USART_ReceiverTimeOut)
	Sets the receiver Time Out value. 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_STOPModeCmd (USART_TypeDef *USARTx, FunctionalState NewState)
	Enables or disables the specified USART peripheral in STOP Mode. More...

void	USART_StopModeWakeUpSourceConfig (USART_TypeDef *USARTx, uint32_t USART_WakeUpSource)
	Selects the USART WakeUp method form stop mode. More...

void	USART_SWAPPinCmd (USART_TypeDef *USARTx, FunctionalState NewState)
	Enables or disables the swap Tx/Rx pins. More...

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

Detailed Description

USART driver modules.

Macro Definition Documentation

#define CR1_CLEAR_MASK

Value:

((uint32_t)(USART_CR1_M | USART_CR1_PCE | \
                                              USART_CR1_PS | USART_CR1_TE | \
                                              USART_CR1_RE))

< USART CR1 register clear Mask ((~(uint32_t)0xFFFFE6F3)) USART CR2 register clock bits clear Mask ((~(uint32_t)0xFFFFF0FF))

Definition at line 97 of file stm32f30x_usart.c.

#define CR1_CLEAR_MASK

Value:

((uint16_t)(USART_CR1_M | USART_CR1_PCE | \
                                              USART_CR1_PS | USART_CR1_TE | \
                                              USART_CR1_RE))

< USART CR1 register clear Mask ((~(uint16_t)0xE9F3)) USART CR2 register clock bits clear Mask ((~(uint16_t)0xF0FF))

Definition at line 108 of file stm32f4xx_usart.c.

#define CR2_CLOCK_CLEAR_MASK

Value:

((uint32_t)(USART_CR2_CLKEN | USART_CR2_CPOL | \

USART_CR2_CPHA | USART_CR2_LBCL))

USART_CR2_LBCL

#define USART_CR2_LBCL

Definition: stm32f4xx.h:10848

USART_CR2_CLKEN

#define USART_CR2_CLKEN

Definition: stm32f4xx.h:10851

USART_CR2_CPOL

#define USART_CR2_CPOL

Definition: stm32f4xx.h:10850

USART_CR2_CPHA

#define USART_CR2_CPHA

Definition: stm32f4xx.h:10849

USART CR3 register clear Mask ((~(uint32_t)0xFFFFFCFF))

Definition at line 102 of file stm32f30x_usart.c.

#define CR2_CLOCK_CLEAR_MASK

Value:

((uint16_t)(USART_CR2_CLKEN | USART_CR2_CPOL | \

USART_CR2_CPHA | USART_CR2_LBCL))

USART_CR2_LBCL

#define USART_CR2_LBCL

Definition: stm32f4xx.h:10848

USART_CR2_CLKEN

#define USART_CR2_CLKEN

Definition: stm32f4xx.h:10851

USART_CR2_CPOL

#define USART_CR2_CPOL

Definition: stm32f4xx.h:10850

USART_CR2_CPHA

#define USART_CR2_CPHA

Definition: stm32f4xx.h:10849

USART CR3 register clear Mask ((~(uint16_t)0xFCFF))

Definition at line 113 of file stm32f4xx_usart.c.

#define CR3_CLEAR_MASK ((uint32_t)(USART_CR3_RTSE | USART_CR3_CTSE))

USART Interrupts mask

Definition at line 106 of file stm32f30x_usart.c.

#define CR3_CLEAR_MASK ((uint16_t)(USART_CR3_RTSE | USART_CR3_CTSE))

USART Interrupts mask

Definition at line 117 of file stm32f4xx_usart.c.

#define IT_MASK ((uint32_t)0x000000FF)

Definition at line 109 of file stm32f30x_usart.c.

#define IT_MASK ((uint16_t)0x001F)

Definition at line 120 of file stm32f4xx_usart.c.

Function Documentation

void USART_AddressDetectionConfig	(	USART_TypeDef *	USARTx,
		uint32_t	USART_AddressLength
	)

Configure the the USART Address detection length.

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_AddressLength	specifies the USART address length detection. This parameter can be one of the following values: USART_AddressLength_4b: 4-bit address length detection USART_AddressLength_7b: 7-bit address length detection

Return values

None

Definition at line 1048 of file stm32f30x_usart.c.

void USART_AutoBaudRateCmd	(	USART_TypeDef *	USARTx,
		FunctionalState	NewState
	)

Enables or disables the Auto Baud Rate.

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 auto baud rate. This parameter can be: ENABLE or DISABLE.

Return values

None

Definition at line 838 of file stm32f30x_usart.c.

void USART_AutoBaudRateConfig	(	USART_TypeDef *	USARTx,
		uint32_t	USART_AutoBaudRate
	)

Selects the USART auto baud rate method.

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_AutoBaudRate	specifies the selected USART auto baud rate method. This parameter can be one of the following values: USART_AutoBaudRate_StartBit: Start Bit duration measurement. USART_AutoBaudRate_FallingEdge: Falling edge to falling edge measurement. USART_AutoBaudRate_0x7FFrame: 0x7F frame. USART_AutoBaudRate_0x55Frame: 0x55 frame.

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

Return values

None

Definition at line 872 of file stm32f30x_usart.c.

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_ClearFlag	(	USART_TypeDef *	USARTx,
		uint32_t	USART_FLAG
	)

Clears the USARTx's pending flags.

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_FLAG

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

USART_FLAG_WUF: Wake up flag.
USART_FLAG_CMF: Character match flag.
USART_FLAG_EOBF: End of block flag.
USART_FLAG_RTOF: Receive time out flag.
USART_FLAG_CTS: CTS Change flag.
USART_FLAG_LBD: LIN Break detection flag.
USART_FLAG_TC: Transmission Complete flag.
USART_FLAG_IDLE: IDLE line detected flag.
USART_FLAG_ORE: OverRun Error flag.
USART_FLAG_NE: Noise Error flag.
USART_FLAG_FE: Framing Error flag.
USART_FLAG_PE: Parity Errorflag.

Note

RXNE pending bit is cleared by a read to the USART_RDR register (USART_ReceiveData()) or by writing 1 to the RXFRQ in the register USART_RQR (USART_RequestCmd()).
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_TDR register (USART_SendData()).
TXE flag is cleared by a write to the USART_TDR register (USART_SendData()) or by writing 1 to the TXFRQ in the register USART_RQR (USART_RequestCmd()).
SBKF flag is cleared by 1 to the SBKRQ in the register USART_RQR (USART_RequestCmd()).

Return values

None

Definition at line 1953 of file stm32f30x_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_ClearITPendingBit	(	USART_TypeDef *	USARTx,
		uint32_t	USART_IT
	)

Clears the USARTx's interrupt pending bits.

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_IT

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

USART_IT_WU: Wake up interrupt.
USART_IT_CM: Character match interrupt.
USART_IT_EOB: End of block interrupt.
USART_IT_RTO: Receive time out interrupt.
USART_IT_CTS: CTS change interrupt.
USART_IT_LBD: LIN Break detection interrupt.
USART_IT_TC: Transmission complete interrupt.
USART_IT_IDLE: IDLE line detected 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.

Note

RXNE pending bit is cleared by a read to the USART_RDR register (USART_ReceiveData()) or by writing 1 to the RXFRQ in the register USART_RQR (USART_RequestCmd()).
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_TDR register (USART_SendData()).
TXE pending bit is cleared by a write to the USART_TDR register (USART_SendData()) or by writing 1 to the TXFRQ in the register USART_RQR (USART_RequestCmd()).

Return values

None

Definition at line 2056 of file stm32f30x_usart.c.

void USART_DataInvCmd	(	USART_TypeDef *	USARTx,
		FunctionalState	NewState
	)

Enables or disables the binary data inversion.

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 defined levels for the USART data. This parameter can be: ENABLE or DISABLE. ENABLE: Logical data from the data register are send/received in negative logic. (1=L, 0=H). The parity bit is also inverted. DISABLE: Logical data from the data register are send/received in positive logic. (1=H, 0=L)

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

Return values

None

Definition at line 560 of file stm32f30x_usart.c.

void USART_DECmd	(	USART_TypeDef *	USARTx,
		FunctionalState	NewState
	)

Enables or disables the USART's DE functionality.

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 driver enable mode. This parameter can be: ENABLE or DISABLE.

Return values

None

Definition at line 1495 of file stm32f30x_usart.c.

void USART_DEPolarityConfig	(	USART_TypeDef *	USARTx,
		uint32_t	USART_DEPolarity
	)

Configures the USART's DE polarity.

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_DEPolarity	specifies the DE polarity. This parameter can be one of the following values: USART_DEPolarity_Low USART_DEPolarity_High

Return values

None

Definition at line 1522 of file stm32f30x_usart.c.

void USART_DirectionModeCmd	(	USART_TypeDef *	USARTx,
		uint32_t	USART_DirectionMode,
		FunctionalState	NewState
	)

Enables or disables the USART's transmitter or receiver.

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_Direction	specifies the USART direction. This parameter can be any combination of the following values: USART_Mode_Tx: USART Transmitter USART_Mode_Rx: USART Receiver
NewState	new state of the USART transfer direction. This parameter can be: ENABLE or DISABLE.

Return values

None

Definition at line 436 of file stm32f30x_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.

void USART_DMACmd	(	USART_TypeDef *	USARTx,
		uint32_t	USART_DMAReq,
		FunctionalState	NewState
	)

Enables or disables the USART's DMA interface.

Parameters

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

Definition at line 1607 of file stm32f30x_usart.c.

void USART_DMAReceptionErrorConfig	(	USART_TypeDef *	USARTx,
		uint32_t	USART_DMAOnError
	)

Enables or disables the USART's DMA interface when reception error occurs.

Parameters

USARTx	Select the USART peripheral. This parameter can be one of the following values: USART1 or USART2 or USART3 or UART4.
USART_DMAOnError	specifies the DMA status in case of reception error. This parameter can be any combination of the following values: USART_DMAOnError_Enable: DMA receive request enabled when the USART DMA reception error is asserted. USART_DMAOnError_Disable: DMA receive request disabled when the USART DMA reception error is asserted.

Return values

None

Definition at line 1640 of file stm32f30x_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.

FlagStatus USART_GetFlagStatus	(	USART_TypeDef *	USARTx,
		uint32_t	USART_FLAG
	)

Checks whether the specified USART flag is set or not.

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_FLAG

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

USART_FLAG_REACK: Receive Enable acknowledge flag.
USART_FLAG_TEACK: Transmit Enable acknowledge flag.
USART_FLAG_WUF: Wake up flag.
USART_FLAG_RWU: Receive Wake up flag.
USART_FLAG_SBK: Send Break flag.
USART_FLAG_CMF: Character match flag.
USART_FLAG_BUSY: Busy flag.
USART_FLAG_ABRF: Auto baud rate flag.
USART_FLAG_ABRE: Auto baud rate error flag.
USART_FLAG_EOBF: End of block flag.
USART_FLAG_RTOF: Receive time out flag.
USART_FLAG_nCTSS: Inverted nCTS input bit status.
USART_FLAG_CTS: CTS Change flag.
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 1902 of file stm32f30x_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.

ITStatus USART_GetITStatus	(	USART_TypeDef *	USARTx,
		uint32_t	USART_IT
	)

Checks whether the specified USART interrupt has occurred or not.

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_IT

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

USART_IT_WU: Wake up interrupt.
USART_IT_CM: Character match interrupt.
USART_IT_EOB: End of block interrupt.
USART_IT_RTO: Receive time out interrupt.
USART_IT_CTS: CTS change interrupt.
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 1984 of file stm32f30x_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_InvPinCmd	(	USART_TypeDef *	USARTx,
		uint32_t	USART_InvPin,
		FunctionalState	NewState
	)

Enables or disables the Pin(s) active level inversion.

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_InvPin	specifies the USART pin(s) to invert. This parameter can be any combination of the following values: USART_InvPin_Tx: USART Tx pin active level inversion. USART_InvPin_Rx: USART Rx pin active level inversion.
NewState	new active level status for the USART pin(s). This parameter can be: ENABLE or DISABLE. ENABLE: pin(s) signal values are inverted (Vdd =0, Gnd =1). DISABLE: pin(s) signal works using the standard logic levels (Vdd =1, Gnd =0).

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

Return values

None

Definition at line 596 of file stm32f30x_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_IrDAConfig	(	USART_TypeDef *	USARTx,
		uint32_t	USART_IrDAMode
	)

Configures the USART's IrDA interface.

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_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 1419 of file stm32f30x_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_ITConfig	(	USART_TypeDef *	USARTx,
		uint32_t	USART_IT,
		FunctionalState	NewState
	)

Enables or disables the specified USART interrupts.

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_IT	specifies the USART interrupt sources to be enabled or disabled. This parameter can be one of the following values: USART_IT_WU: Wake up interrupt. USART_IT_CM: Character match interrupt. USART_IT_EOB: End of block interrupt. USART_IT_RTO: Receive time out interrupt. USART_IT_CTS: CTS change interrupt. 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_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 1773 of file stm32f30x_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_LINBreakDetectLengthConfig	(	USART_TypeDef *	USARTx,
		uint32_t	USART_LINBreakDetectLength
	)

Sets the USART LIN Break detection length.

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_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 1113 of file stm32f30x_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_MSBFirstCmd	(	USART_TypeDef *	USARTx,
		FunctionalState	NewState
	)

Enables or disables the USART's most significant bit first transmitted/received following the start bit.

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 most significant bit first transmitted/received following the start bit. This parameter can be: ENABLE or DISABLE.

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

Return values

None

Definition at line 526 of file stm32f30x_usart.c.

void USART_MuteModeCmd	(	USART_TypeDef *	USARTx,
		FunctionalState	NewState
	)

Enables or disables the USART's mute mode.

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 mute mode. This parameter can be: ENABLE or DISABLE.

Return values

None

Definition at line 1000 of file stm32f30x_usart.c.

void USART_MuteModeWakeUpConfig	(	USART_TypeDef *	USARTx,
		uint32_t	USART_WakeUp
	)

Selects the USART WakeUp method from mute mode.

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_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 1028 of file stm32f30x_usart.c.

void USART_OverrunDetectionConfig	(	USART_TypeDef *	USARTx,
		uint32_t	USART_OVRDetection
	)

Enables or disables the USART's Overrun detection.

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_OVRDetection	specifies the OVR detection status in case of OVR error. This parameter can be any combination of the following values: USART_OVRDetection_Enable: OVR error detection enabled when the USART OVR error is asserted. USART_OVRDetection_Disable: OVR error detection disabled when the USART OVR error is asserted.

Return values

None

Definition at line 1860 of file stm32f30x_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_ReceiverTimeOutCmd	(	USART_TypeDef *	USARTx,
		FunctionalState	NewState
	)

Enables or disables the receiver Time Out feature.

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 receiver Time Out. This parameter can be: ENABLE or DISABLE.

Return values

None

Definition at line 655 of file stm32f30x_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_RequestCmd	(	USART_TypeDef *	USARTx,
		uint32_t	USART_Request,
		FunctionalState	NewState
	)

Enables the specified USART's Request.

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_Request	specifies the USART request. This parameter can be any combination of the following values: USART_Request_TXFRQ: Transmit data flush ReQuest USART_Request_RXFRQ: Receive data flush ReQuest USART_Request_MMRQ: Mute Mode ReQuest USART_Request_SBKRQ: Send Break ReQuest USART_Request_ABRRQ: Auto Baud Rate ReQuest
NewState	new state of the DMA interface when reception error occurs. This parameter can be: ENABLE or DISABLE.

Return values

None

Definition at line 1827 of file stm32f30x_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_SetAutoRetryCount	(	USART_TypeDef *	USARTx,
		uint8_t	USART_AutoCount
	)

Sets the Smart Card number of retries in transmit and receive.

Parameters

USARTx	Select the USART peripheral. This parameter can be one of the following values: USART1 or USART2 or USART3.
USART_AutoCount	specifies the Smart Card auto retry count.

Return values

None

Definition at line 1338 of file stm32f30x_usart.c.

void USART_SetBlockLength	(	USART_TypeDef *	USARTx,
		uint8_t	USART_BlockLength
	)

Sets the Smart Card Block length.

Parameters

USARTx	Select the USART peripheral. This parameter can be one of the following values: USART1 or USART2 or USART3.
USART_BlockLength	specifies the Smart Card block length.

Return values

None

Definition at line 1356 of file stm32f30x_usart.c.

void USART_SetDEAssertionTime	(	USART_TypeDef *	USARTx,
		uint32_t	USART_DEAssertionTime
	)

Sets the specified RS485 DE assertion time.

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_AssertionTime	specifies the time between the activation of the DE signal and the beginning of the start bit

Return values

None

Definition at line 1540 of file stm32f30x_usart.c.

void USART_SetDEDeassertionTime	(	USART_TypeDef *	USARTx,
		uint32_t	USART_DEDeassertionTime
	)

Sets the specified RS485 DE deassertion time.

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_DeassertionTime	specifies the time between the middle of the last stop bit in a transmitted message and the de-activation of the DE signal

Return values

None

Definition at line 1560 of file stm32f30x_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_SetReceiverTimeOut	(	USART_TypeDef *	USARTx,
		uint32_t	USART_ReceiverTimeOut
	)

Sets the receiver Time Out value.

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_ReceiverTimeOut	specifies the Receiver Time Out value.

Return values

None

Definition at line 682 of file stm32f30x_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_STOPModeCmd	(	USART_TypeDef *	USARTx,
		FunctionalState	NewState
	)

Enables or disables the specified USART peripheral in STOP Mode.

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 state in stop mode. This parameter can be: ENABLE or DISABLE.

Note: This function has to be called when USART clock is set to HSI or LSE.

Return values

None

Definition at line 754 of file stm32f30x_usart.c.

void USART_StopModeWakeUpSourceConfig	(	USART_TypeDef *	USARTx,
		uint32_t	USART_WakeUpSource
	)

Selects the USART WakeUp method form stop mode.

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_WakeUp	specifies the selected USART wakeup method. This parameter can be one of the following values: USART_WakeUpSource_AddressMatch: WUF active on address match. USART_WakeUpSource_StartBit: WUF active on Start bit detection. USART_WakeUpSource_RXNE: WUF active on RXNE.

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

Return values

None

Definition at line 787 of file stm32f30x_usart.c.

void USART_SWAPPinCmd	(	USART_TypeDef *	USARTx,
		FunctionalState	NewState
	)

Enables or disables the swap Tx/Rx pins.

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 TX/RX pins pinout. This parameter can be: ENABLE or DISABLE. ENABLE: The TX and RX pins functions are swapped. DISABLE: TX/RX pins are used as defined in standard pinout

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

Return values

None

Definition at line 629 of file stm32f30x_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.

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