Collaboration diagram for CAN_Private_Functions:

Modules
	Initialization and Configuration functions
	Initialization and Configuration functions.

	CAN Frames Transmission functions
	CAN Frames Transmission functions.

	CAN Frames Reception functions
	CAN Frames Reception functions.

	CAN Operation modes functions
	CAN Operation modes functions.

	CAN Bus Error management functions
	CAN Bus Error management functions.

	Interrupts and flags management functions
	Interrupts and flags management functions.

Functions
void	CAN_CancelTransmit (CAN_TypeDef *CANx, uint8_t Mailbox)
	Cancels a transmit request. More...

void	CAN_ClearFlag (CAN_TypeDef *CANx, uint32_t CAN_FLAG)
	Clears the CAN's pending flags. More...

void	CAN_ClearITPendingBit (CAN_TypeDef *CANx, uint32_t CAN_IT)
	Clears the CANx's interrupt pending bits. More...

void	CAN_DBGFreeze (CAN_TypeDef *CANx, FunctionalState NewState)
	Enables or disables the DBG Freeze for CAN. More...

void	CAN_DeInit (CAN_TypeDef *CANx)
	Deinitializes the CAN peripheral registers to their default reset values. More...

void	CAN_FIFORelease (CAN_TypeDef *CANx, uint8_t FIFONumber)
	Releases the specified FIFO. More...

void	CAN_FilterInit (CAN_FilterInitTypeDef *CAN_FilterInitStruct)
	Initializes the CAN peripheral according to the specified parameters in the CAN_FilterInitStruct. More...

FlagStatus	CAN_GetFlagStatus (CAN_TypeDef *CANx, uint32_t CAN_FLAG)
	Checks whether the specified CAN flag is set or not. More...

ITStatus	CAN_GetITStatus (CAN_TypeDef *CANx, uint32_t CAN_IT)
	Checks whether the specified CANx interrupt has occurred or not. More...

uint8_t	CAN_GetLastErrorCode (CAN_TypeDef *CANx)
	Returns the CANx's last error code (LEC). More...

uint8_t	CAN_GetLSBTransmitErrorCounter (CAN_TypeDef *CANx)
	Returns the LSB of the 9-bit CANx Transmit Error Counter(TEC). More...

uint8_t	CAN_GetReceiveErrorCounter (CAN_TypeDef *CANx)
	Returns the CANx Receive Error Counter (REC). More...

uint8_t	CAN_Init (CAN_TypeDef CANx, CAN_InitTypeDef CAN_InitStruct)
	Initializes the CAN peripheral according to the specified parameters in the CAN_InitStruct. More...

void	CAN_ITConfig (CAN_TypeDef *CANx, uint32_t CAN_IT, FunctionalState NewState)
	Enables or disables the specified CANx interrupts. More...

uint8_t	CAN_MessagePending (CAN_TypeDef *CANx, uint8_t FIFONumber)
	Returns the number of pending messages. More...

uint8_t	CAN_OperatingModeRequest (CAN_TypeDef *CANx, uint8_t CAN_OperatingMode)
	Select the CAN Operation mode. More...

void	CAN_Receive (CAN_TypeDef CANx, uint8_t FIFONumber, CanRxMsg RxMessage)
	Receives a message. More...

void	CAN_SlaveStartBank (uint8_t CAN_BankNumber)
	Select the start bank filter for slave CAN. More...

uint8_t	CAN_Sleep (CAN_TypeDef *CANx)
	Enters the low power mode. More...

void	CAN_StructInit (CAN_InitTypeDef *CAN_InitStruct)
	Fills each CAN_InitStruct member with its default value. More...

uint8_t	CAN_Transmit (CAN_TypeDef CANx, CanTxMsg TxMessage)
	Initiates the transmission of a message. More...

uint8_t	CAN_TransmitStatus (CAN_TypeDef *CANx, uint8_t TransmitMailbox)
	Checks the transmission of a message. More...

void	CAN_TTComModeCmd (CAN_TypeDef *CANx, FunctionalState NewState)
	Enables or disabes the CAN Time TriggerOperation communication mode. More...

uint8_t	CAN_WakeUp (CAN_TypeDef *CANx)
	Wakes the CAN up. More...

static ITStatus	CheckITStatus (uint32_t CAN_Reg, uint32_t It_Bit)
	Checks whether the CAN interrupt has occurred or not. More...

Detailed Description

Function Documentation

void CAN_CancelTransmit	(	CAN_TypeDef *	CANx,
		uint8_t	Mailbox
	)

Cancels a transmit request.

Parameters

CANx	where x can be 1 or 2 to to select the CAN peripheral.
Mailbox	Mailbox number.

Return values

None.

Definition at line 643 of file stm32f10x_can.c.

void CAN_ClearFlag	(	CAN_TypeDef *	CANx,
		uint32_t	CAN_FLAG
	)

Clears the CAN's pending flags.

Parameters

CANx	where x can be 1 or 2 to to select the CAN peripheral.
CAN_FLAG	specifies the flag to clear. This parameter can be one of the following flags: CAN_FLAG_RQCP0 CAN_FLAG_RQCP1 CAN_FLAG_RQCP2 CAN_FLAG_FF1 CAN_FLAG_FOV1 CAN_FLAG_FF0 CAN_FLAG_FOV0 CAN_FLAG_WKU CAN_FLAG_SLAK CAN_FLAG_LEC

Return values

None.

Definition at line 1143 of file stm32f10x_can.c.

void CAN_ClearITPendingBit	(	CAN_TypeDef *	CANx,
		uint32_t	CAN_IT
	)

Clears the CANx's interrupt pending bits.

Parameters

CANx	where x can be 1 or 2 to to select the CAN peripheral.
CAN_IT	specifies the interrupt pending bit to clear. CAN_IT_TME CAN_IT_FF0 CAN_IT_FOV0 CAN_IT_FF1 CAN_IT_FOV1 CAN_IT_WKU CAN_IT_SLK CAN_IT_EWG CAN_IT_EPV CAN_IT_BOF CAN_IT_LEC CAN_IT_ERR

Return values

None.

Definition at line 1306 of file stm32f10x_can.c.

void CAN_DBGFreeze	(	CAN_TypeDef *	CANx,
		FunctionalState	NewState
	)

Enables or disables the DBG Freeze for CAN.

Parameters

CANx	where x can be 1 or 2 to to select the CAN peripheral.
NewState	new state of the CAN peripheral. This parameter can be: ENABLE or DISABLE.

Return values

None.

Definition at line 451 of file stm32f10x_can.c.

void CAN_DeInit ( CAN_TypeDef * CANx )

Deinitializes the CAN peripheral registers to their default reset values.

Parameters

CANx	where x can be 1 or 2 to select the CAN peripheral.

Return values

None.

Definition at line 122 of file stm32f10x_can.c.

void CAN_FIFORelease	(	CAN_TypeDef *	CANx,
		uint8_t	FIFONumber
	)

Releases the specified FIFO.

Releases the specified receive FIFO.

Parameters

CANx	where x can be 1 or 2 to to select the CAN peripheral.
FIFONumber	FIFO to release, CAN_FIFO0 or CAN_FIFO1.

Return values

None.

Definition at line 720 of file stm32f10x_can.c.

void CAN_FilterInit ( CAN_FilterInitTypeDef * CAN_FilterInitStruct )

Initializes the CAN peripheral according to the specified parameters in the CAN_FilterInitStruct.

Configures the CAN reception filter according to the specified parameters in the CAN_FilterInitStruct.

Parameters

CAN_FilterInitStruct pointer to a CAN_FilterInitTypeDef structure that contains the configuration information.

Return values

None.

Definition at line 292 of file stm32f10x_can.c.

FlagStatus CAN_GetFlagStatus	(	CAN_TypeDef *	CANx,
		uint32_t	CAN_FLAG
	)

Checks whether the specified CAN flag is set or not.

Parameters

CANx	where x can be 1 or 2 to to select the CAN peripheral.
CAN_FLAG	specifies the flag to check. This parameter can be one of the following flags: CAN_FLAG_EWG CAN_FLAG_EPV CAN_FLAG_BOF CAN_FLAG_RQCP0 CAN_FLAG_RQCP1 CAN_FLAG_RQCP2 CAN_FLAG_FMP1 CAN_FLAG_FF1 CAN_FLAG_FOV1 CAN_FLAG_FMP0 CAN_FLAG_FF0 CAN_FLAG_FOV0 CAN_FLAG_WKU CAN_FLAG_SLAK CAN_FLAG_LEC

Return values

The	new state of CAN_FLAG (SET or RESET).

Definition at line 1043 of file stm32f10x_can.c.

ITStatus CAN_GetITStatus	(	CAN_TypeDef *	CANx,
		uint32_t	CAN_IT
	)

Checks whether the specified CANx interrupt has occurred or not.

Parameters

CANx	where x can be 1 or 2 to to select the CAN peripheral.
CAN_IT	specifies the CAN interrupt source to check. This parameter can be one of the following flags: CAN_IT_TME CAN_IT_FMP0 CAN_IT_FF0 CAN_IT_FOV0 CAN_IT_FMP1 CAN_IT_FF1 CAN_IT_FOV1 CAN_IT_WKU CAN_IT_SLK CAN_IT_EWG CAN_IT_EPV CAN_IT_BOF CAN_IT_LEC CAN_IT_ERR

Return values

The	current state of CAN_IT (SET or RESET).

Definition at line 1203 of file stm32f10x_can.c.

uint8_t CAN_GetLastErrorCode ( CAN_TypeDef * CANx )

Returns the CANx's last error code (LEC).

Parameters

CANx	where x can be 1 or 2 to to select the CAN peripheral.

Return values

CAN_ErrorCode

specifies the Error code :

CAN_ERRORCODE_NoErr No Error
CAN_ERRORCODE_StuffErr Stuff Error
CAN_ERRORCODE_FormErr Form Error
CAN_ERRORCODE_ACKErr Acknowledgment Error
CAN_ERRORCODE_BitRecessiveErr Bit Recessive Error
CAN_ERRORCODE_BitDominantErr Bit Dominant Error
CAN_ERRORCODE_CRCErr CRC Error
CAN_ERRORCODE_SoftwareSetErr Software Set Error

Definition at line 922 of file stm32f10x_can.c.

uint8_t CAN_GetLSBTransmitErrorCounter ( CAN_TypeDef * CANx )

Returns the LSB of the 9-bit CANx Transmit Error Counter(TEC).

Parameters

CANx	where x can be 1 or 2 to to select the CAN peripheral.

Return values

LSB	of the 9-bit CAN Transmit Error Counter.

Definition at line 966 of file stm32f10x_can.c.

uint8_t CAN_GetReceiveErrorCounter ( CAN_TypeDef * CANx )

Returns the CANx Receive Error Counter (REC).

Note: In case of an error during reception, this counter is incremented by 1 or by 8 depending on the error condition as defined by the CAN standard. After every successful reception, the counter is decremented by 1 or reset to 120 if its value was higher than 128. When the counter value exceeds 127, the CAN controller enters the error passive state.

Parameters

CANx	where x can be 1 or 2 to to select the CAN peripheral.

Return values

CAN	Receive Error Counter.

Definition at line 946 of file stm32f10x_can.c.

uint8_t CAN_Init	(	CAN_TypeDef *	CANx,
		CAN_InitTypeDef *	CAN_InitStruct
	)

Initializes the CAN peripheral according to the specified parameters in the CAN_InitStruct.

Parameters

CANx	where x can be 1 or 2 to to select the CAN peripheral.
CAN_InitStruct	pointer to a CAN_InitTypeDef structure that contains the configuration information for the CAN peripheral.

Return values

Constant indicates initialization succeed which will be CAN_InitStatus_Failed or CAN_InitStatus_Success.

Definition at line 154 of file stm32f10x_can.c.

void CAN_ITConfig	(	CAN_TypeDef *	CANx,
		uint32_t	CAN_IT,
		FunctionalState	NewState
	)

Enables or disables the specified CANx interrupts.

Parameters

CANx	where x can be 1 or 2 to to select the CAN peripheral.
CAN_IT	specifies the CAN interrupt sources to be enabled or disabled. This parameter can be: CAN_IT_TME, CAN_IT_FMP0, CAN_IT_FF0, CAN_IT_FOV0, CAN_IT_FMP1, CAN_IT_FF1, CAN_IT_FOV1, CAN_IT_EWG, CAN_IT_EPV, CAN_IT_LEC, CAN_IT_ERR, CAN_IT_WKU or CAN_IT_SLK.
NewState	new state of the CAN interrupts. This parameter can be: ENABLE or DISABLE.

Return values

None.

Definition at line 1003 of file stm32f10x_can.c.

uint8_t CAN_MessagePending	(	CAN_TypeDef *	CANx,
		uint8_t	FIFONumber
	)

Returns the number of pending messages.

Returns the number of pending received messages.

Parameters

CANx	where x can be 1 or 2 to to select the CAN peripheral.
FIFONumber	Receive FIFO number, CAN_FIFO0 or CAN_FIFO1.

Return values

NbMessage : which is the number of pending message.

Definition at line 743 of file stm32f10x_can.c.

uint8_t CAN_OperatingModeRequest	(	CAN_TypeDef *	CANx,
		uint8_t	CAN_OperatingMode
	)

Select the CAN Operation mode.

Selects the CAN Operation mode.

Parameters

CAN_OperatingMode : CAN Operating Mode. This parameter can be one of CAN_OperatingMode_TypeDef enumeration.

Return values

status

of the requested mode which can be

CAN_ModeStatus_Failed CAN failed entering the specific mode
CAN_ModeStatus_Success CAN Succeed entering the specific mode

Definition at line 774 of file stm32f10x_can.c.

void CAN_Receive	(	CAN_TypeDef *	CANx,
		uint8_t	FIFONumber,
		CanRxMsg *	RxMessage
	)

Receives a message.

Receives a correct CAN frame.

Parameters

CANx	where x can be 1 or 2 to to select the CAN peripheral.
FIFONumber	Receive FIFO number, CAN_FIFO0 or CAN_FIFO1.
RxMessage	pointer to a structure receive message which contains CAN Id, CAN DLC, CAN datas and FMI number.

Return values

None.

Definition at line 671 of file stm32f10x_can.c.

void CAN_SlaveStartBank ( uint8_t CAN_BankNumber )

Select the start bank filter for slave CAN.

Note: This function applies only to STM32 Connectivity line devices.

Parameters

CAN_BankNumber Select the start slave bank filter from 1..27.

Return values

None.

Definition at line 428 of file stm32f10x_can.c.

uint8_t CAN_Sleep ( CAN_TypeDef * CANx )

Enters the low power mode.

Enters the Sleep (low power) mode.

Parameters

CANx	where x can be 1 or 2 to to select the CAN peripheral.

Return values

status CAN_Sleep_Ok if sleep entered, CAN_Sleep_Failed in an other case.

Definition at line 856 of file stm32f10x_can.c.

void CAN_StructInit ( CAN_InitTypeDef * CAN_InitStruct )

Fills each CAN_InitStruct member with its default value.

Parameters

CAN_InitStruct pointer to a CAN_InitTypeDef structure which will be initialized.

Return values

None.

Definition at line 384 of file stm32f10x_can.c.

uint8_t CAN_Transmit	(	CAN_TypeDef *	CANx,
		CanTxMsg *	TxMessage
	)

Initiates the transmission of a message.

Initiates and transmits a CAN frame message.

Parameters

CANx	where x can be 1 or 2 to to select the CAN peripheral.
TxMessage	pointer to a structure which contains CAN Id, CAN DLC and CAN data.

Return values

The	number of the mailbox that is used for transmission or CAN_TxStatus_NoMailBox if there is no empty mailbox.

Definition at line 515 of file stm32f10x_can.c.

uint8_t CAN_TransmitStatus	(	CAN_TypeDef *	CANx,
		uint8_t	TransmitMailbox
	)

Checks the transmission of a message.

Checks the transmission status of a CAN Frame.

Parameters

CANx	where x can be 1 or 2 to to select the CAN peripheral.
TransmitMailbox	the number of the mailbox that is used for transmission.

Return values

CAN_TxStatus_Ok if the CAN driver transmits the message, CAN_TxStatus_Failed in an other case.

Definition at line 589 of file stm32f10x_can.c.

void CAN_TTComModeCmd	(	CAN_TypeDef *	CANx,
		FunctionalState	NewState
	)

Enables or disabes the CAN Time TriggerOperation communication mode.

Enables or disables the CAN Time TriggerOperation communication mode.

Parameters

CANx	where x can be 1 or 2 to to select the CAN peripheral.
NewState	: Mode new state , can be one of FunctionalState.

Note: when enabled, Time stamp (TIME[15:0]) value is sent in the last two data bytes of the 8-byte message: TIME[7:0] in data byte 6 and TIME[15:8] in data byte 7; DLC must be programmed as 8 in order Time Stamp (2 bytes) to be sent over the CAN bus.

Return values

None

Definition at line 481 of file stm32f10x_can.c.

uint8_t CAN_WakeUp ( CAN_TypeDef * CANx )

Wakes the CAN up.

Wakes up the CAN peripheral from sleep mode .

Parameters

CANx	where x can be 1 or 2 to to select the CAN peripheral.

Return values

status CAN_WakeUp_Ok if sleep mode left, CAN_WakeUp_Failed in an other case.

Definition at line 882 of file stm32f10x_can.c.

static ITStatus CheckITStatus	(	uint32_t	CAN_Reg,
		uint32_t	It_Bit
	)

static

Checks whether the CAN interrupt has occurred or not.

Parameters

CAN_Reg	specifies the CAN interrupt register to check.
It_Bit	specifies the interrupt source bit to check.

Return values

The	new state of the CAN Interrupt (SET or RESET).

Definition at line 1600 of file stm32f30x_can.c.

Modules

Functions

Detailed Description

Function Documentation