Flexcan_driver

Data Structures
struct	_flexcan_frame
	FlexCAN message frame structure. More...
struct	_flexcan_timing_config
	FlexCAN protocol timing characteristic configuration structure. More...
struct	_flexcan_config
	FlexCAN module configuration structure. More...
struct	_flexcan_rx_mb_config
	FlexCAN Receive Message Buffer configuration structure. More...
struct	_flexcan_rx_fifo_config
	FlexCAN Legacy Rx FIFO configuration structure. More...
struct	_flexcan_mb_transfer
	FlexCAN Message Buffer transfer. More...
struct	_flexcan_fifo_transfer
	FlexCAN Rx FIFO transfer. More...
struct	_flexcan_handle
	FlexCAN handle structure. More...

Variables
uint32_t   _flexcan_frame::timestamp: 16
uint32_t   _flexcan_frame::length: 4
uint32_t   _flexcan_frame::type: 1
uint32_t   _flexcan_frame::format: 1
uint32_t   _flexcan_frame::__pad0__: 1
uint32_t   _flexcan_frame::idhit: 9
struct {
uint32_t   _flexcan_frame::timestamp: 16
uint32_t   _flexcan_frame::length: 4
uint32_t   _flexcan_frame::type: 1
uint32_t   _flexcan_frame::format: 1
uint32_t   _flexcan_frame::__pad0__: 1
uint32_t   _flexcan_frame::idhit: 9
};
uint32_t   _flexcan_frame::id: 29
uint32_t   _flexcan_frame::__pad0__: 3
struct {
uint32_t   _flexcan_frame::id: 29
uint32_t   _flexcan_frame::__pad0__: 3
};
uint32_t   _flexcan_frame::dataWord0
uint32_t   _flexcan_frame::dataWord1
struct {
uint32_t   _flexcan_frame::dataWord0
uint32_t   _flexcan_frame::dataWord1
}
uint8_t   _flexcan_frame::dataByte3
uint8_t   _flexcan_frame::dataByte2
uint8_t   _flexcan_frame::dataByte1
uint8_t   _flexcan_frame::dataByte0
uint8_t   _flexcan_frame::dataByte7
uint8_t   _flexcan_frame::dataByte6
uint8_t   _flexcan_frame::dataByte5
uint8_t   _flexcan_frame::dataByte4
struct {
uint8_t   _flexcan_frame::dataByte3
uint8_t   _flexcan_frame::dataByte2
uint8_t   _flexcan_frame::dataByte1
uint8_t   _flexcan_frame::dataByte0
uint8_t   _flexcan_frame::dataByte7
uint8_t   _flexcan_frame::dataByte6
uint8_t   _flexcan_frame::dataByte5
uint8_t   _flexcan_frame::dataByte4
}
union {
struct {
uint32_t   _flexcan_frame::dataWord0
uint32_t   _flexcan_frame::dataWord1
}
struct {
uint8_t   _flexcan_frame::dataByte3
uint8_t   _flexcan_frame::dataByte2
uint8_t   _flexcan_frame::dataByte1
uint8_t   _flexcan_frame::dataByte0
uint8_t   _flexcan_frame::dataByte7
uint8_t   _flexcan_frame::dataByte6
uint8_t   _flexcan_frame::dataByte5
uint8_t   _flexcan_frame::dataByte4
}
};
uint16_t	_flexcan_timing_config::preDivider
uint8_t	_flexcan_timing_config::rJumpwidth
uint8_t	_flexcan_timing_config::phaseSeg1
uint8_t	_flexcan_timing_config::phaseSeg2
uint8_t	_flexcan_timing_config::propSeg
uint32_t   _flexcan_config::baudRate
struct {
uint32_t   _flexcan_config::baudRate
}
uint32_t   _flexcan_config::bitRate
struct {
uint32_t   _flexcan_config::bitRate
}
union {
struct {
uint32_t   _flexcan_config::baudRate
}
struct {
uint32_t   _flexcan_config::bitRate
}
};
flexcan_clock_source_t	_flexcan_config::clkSrc
flexcan_wake_up_source_t	_flexcan_config::wakeupSrc
uint8_t	_flexcan_config::maxMbNum
bool	_flexcan_config::enableLoopBack
bool	_flexcan_config::enableTimerSync
bool	_flexcan_config::enableSelfWakeup
bool	_flexcan_config::enableIndividMask
bool	_flexcan_config::disableSelfReception
bool	_flexcan_config::enableListenOnlyMode
bool	_flexcan_config::enableSupervisorMode
flexcan_timing_config_t	_flexcan_config::timingConfig
uint32_t	_flexcan_rx_mb_config::id
flexcan_frame_format_t	_flexcan_rx_mb_config::format
flexcan_frame_type_t	_flexcan_rx_mb_config::type
uint32_t *	_flexcan_rx_fifo_config::idFilterTable
uint8_t	_flexcan_rx_fifo_config::idFilterNum
flexcan_rx_fifo_filter_type_t	_flexcan_rx_fifo_config::idFilterType
flexcan_rx_fifo_priority_t	_flexcan_rx_fifo_config::priority
flexcan_frame_t *	_flexcan_mb_transfer::frame
uint8_t	_flexcan_mb_transfer::mbIdx
flexcan_frame_t *	_flexcan_fifo_transfer::frame
size_t	_flexcan_fifo_transfer::frameNum
flexcan_transfer_callback_t	_flexcan_handle::callback
void *	_flexcan_handle::userData
flexcan_frame_t *volatile	_flexcan_handle::mbFrameBuf [CAN_WORD1_COUNT]
flexcan_frame_t *volatile	_flexcan_handle::rxFifoFrameBuf
size_t	_flexcan_handle::rxFifoFrameNum
size_t	_flexcan_handle::rxFifoTransferTotalNum
volatile uint8_t	_flexcan_handle::mbState [CAN_WORD1_COUNT]
volatile uint8_t	_flexcan_handle::rxFifoState
volatile uint32_t	_flexcan_handle::timestamp [CAN_WORD1_COUNT]

Driver version
enum	{   kStatus_FLEXCAN_TxBusy = MAKE_STATUS(kStatusGroup_FLEXCAN, 0) , kStatus_FLEXCAN_TxIdle = MAKE_STATUS(kStatusGroup_FLEXCAN, 1) , kStatus_FLEXCAN_TxSwitchToRx , kStatus_FLEXCAN_RxBusy = MAKE_STATUS(kStatusGroup_FLEXCAN, 3) ,   kStatus_FLEXCAN_RxIdle = MAKE_STATUS(kStatusGroup_FLEXCAN, 4) , kStatus_FLEXCAN_RxOverflow = MAKE_STATUS(kStatusGroup_FLEXCAN, 5) , kStatus_FLEXCAN_RxFifoBusy = MAKE_STATUS(kStatusGroup_FLEXCAN, 6) , kStatus_FLEXCAN_RxFifoIdle = MAKE_STATUS(kStatusGroup_FLEXCAN, 7) ,   kStatus_FLEXCAN_RxFifoOverflow = MAKE_STATUS(kStatusGroup_FLEXCAN, 8) , kStatus_FLEXCAN_RxFifoWarning = MAKE_STATUS(kStatusGroup_FLEXCAN, 9) , kStatus_FLEXCAN_RxFifoDisabled , kStatus_FLEXCAN_ErrorStatus = MAKE_STATUS(kStatusGroup_FLEXCAN, 11) ,   kStatus_FLEXCAN_WakeUp = MAKE_STATUS(kStatusGroup_FLEXCAN, 12) , kStatus_FLEXCAN_UnHandled = MAKE_STATUS(kStatusGroup_FLEXCAN, 13) , kStatus_FLEXCAN_RxRemote = MAKE_STATUS(kStatusGroup_FLEXCAN, 14) }
	FlexCAN transfer status. More...
enum	_flexcan_frame_format { kFLEXCAN_FrameFormatStandard = 0x0U , kFLEXCAN_FrameFormatExtend = 0x1U }
	FlexCAN frame format. More...
enum	_flexcan_frame_type { kFLEXCAN_FrameTypeData = 0x0U , kFLEXCAN_FrameTypeRemote = 0x1U }
	FlexCAN frame type. More...
enum	_flexcan_clock_source { kFLEXCAN_ClkSrcOsc = 0x0U , kFLEXCAN_ClkSrcPeri = 0x1U , kFLEXCAN_ClkSrc0 = 0x0U , kFLEXCAN_ClkSrc1 = 0x1U }
	FlexCAN clock source. More...
enum	_flexcan_wake_up_source { kFLEXCAN_WakeupSrcUnfiltered = 0x0U , kFLEXCAN_WakeupSrcFiltered = 0x1U }
	FlexCAN wake up source. More...
enum	_flexcan_rx_fifo_filter_type { kFLEXCAN_RxFifoFilterTypeA = 0x0U , kFLEXCAN_RxFifoFilterTypeB , kFLEXCAN_RxFifoFilterTypeC , kFLEXCAN_RxFifoFilterTypeD = 0x3U }
	FlexCAN Rx Fifo Filter type. More...
enum	_flexcan_rx_fifo_priority { kFLEXCAN_RxFifoPrioLow = 0x0U , kFLEXCAN_RxFifoPrioHigh = 0x1U }
	FlexCAN Enhanced/Legacy Rx FIFO priority. More...
enum	_flexcan_interrupt_enable {   kFLEXCAN_BusOffInterruptEnable = CAN_CTRL1_BOFFMSK_MASK , kFLEXCAN_ErrorInterruptEnable = CAN_CTRL1_ERRMSK_MASK , kFLEXCAN_TxWarningInterruptEnable = CAN_CTRL1_TWRNMSK_MASK , kFLEXCAN_RxWarningInterruptEnable = CAN_CTRL1_RWRNMSK_MASK ,   kFLEXCAN_WakeUpInterruptEnable = CAN_MCR_WAKMSK_MASK }
	FlexCAN interrupt enable enumerations. More...
enum	_flexcan_flags {   kFLEXCAN_SynchFlag = CAN_ESR1_SYNCH_MASK , kFLEXCAN_TxWarningIntFlag = CAN_ESR1_TWRNINT_MASK , kFLEXCAN_RxWarningIntFlag = CAN_ESR1_RWRNINT_MASK , kFLEXCAN_IdleFlag = CAN_ESR1_IDLE_MASK ,   kFLEXCAN_FaultConfinementFlag = CAN_ESR1_FLTCONF_MASK , kFLEXCAN_TransmittingFlag = CAN_ESR1_TX_MASK , kFLEXCAN_ReceivingFlag = CAN_ESR1_RX_MASK , kFLEXCAN_BusOffIntFlag = CAN_ESR1_BOFFINT_MASK ,   kFLEXCAN_ErrorIntFlag = CAN_ESR1_ERRINT_MASK , kFLEXCAN_WakeUpIntFlag = CAN_ESR1_WAKINT_MASK , kFLEXCAN_ErrorFlag }
	FlexCAN status flags. More...
enum	_flexcan_error_flags {   kFLEXCAN_TxErrorWarningFlag = CAN_ESR1_TXWRN_MASK , kFLEXCAN_RxErrorWarningFlag = CAN_ESR1_RXWRN_MASK , kFLEXCAN_StuffingError = CAN_ESR1_STFERR_MASK , kFLEXCAN_FormError = CAN_ESR1_FRMERR_MASK ,   kFLEXCAN_CrcError = CAN_ESR1_CRCERR_MASK , kFLEXCAN_AckError = CAN_ESR1_ACKERR_MASK , kFLEXCAN_Bit0Error = CAN_ESR1_BIT0ERR_MASK , kFLEXCAN_Bit1Error = CAN_ESR1_BIT1ERR_MASK }
	FlexCAN error status flags. More...
enum	{ kFLEXCAN_RxFifoOverflowFlag = CAN_IFLAG1_BUF7I_MASK , kFLEXCAN_RxFifoWarningFlag = CAN_IFLAG1_BUF6I_MASK , kFLEXCAN_RxFifoFrameAvlFlag = CAN_IFLAG1_BUF5I_MASK }
	FlexCAN Legacy Rx FIFO status flags. More...
typedef enum _flexcan_frame_format	flexcan_frame_format_t
	FlexCAN frame format.
typedef enum _flexcan_frame_type	flexcan_frame_type_t
	FlexCAN frame type.
typedef enum _flexcan_clock_source	flexcan_clock_source_t
	FlexCAN clock source.
typedef enum _flexcan_wake_up_source	flexcan_wake_up_source_t
	FlexCAN wake up source.
typedef enum _flexcan_rx_fifo_filter_type	flexcan_rx_fifo_filter_type_t
	FlexCAN Rx Fifo Filter type.
typedef enum _flexcan_rx_fifo_priority	flexcan_rx_fifo_priority_t
	FlexCAN Enhanced/Legacy Rx FIFO priority.
typedef struct _flexcan_frame	flexcan_frame_t
	FlexCAN message frame structure.
typedef struct _flexcan_timing_config	flexcan_timing_config_t
	FlexCAN protocol timing characteristic configuration structure.
typedef struct _flexcan_config	flexcan_config_t
	FlexCAN module configuration structure.
typedef struct _flexcan_rx_mb_config	flexcan_rx_mb_config_t
	FlexCAN Receive Message Buffer configuration structure.
typedef struct _flexcan_rx_fifo_config	flexcan_rx_fifo_config_t
	FlexCAN Legacy Rx FIFO configuration structure.
typedef struct _flexcan_mb_transfer	flexcan_mb_transfer_t
	FlexCAN Message Buffer transfer.
typedef struct _flexcan_fifo_transfer	flexcan_fifo_transfer_t
	FlexCAN Rx FIFO transfer.
typedef struct _flexcan_handle	flexcan_handle_t
	FlexCAN handle structure definition.
typedef void(*	flexcan_transfer_callback_t) (CAN_Type *base, flexcan_handle_t *handle, status_t status, uint32_t result, void *userData)
#define	FSL_FLEXCAN_DRIVER_VERSION   (MAKE_VERSION(2, 9, 2))
	FlexCAN driver version.
#define	FLEXCAN_WAIT_TIMEOUT   (1000U)
#define	FLEXCAN_ID_STD(id)    (((uint32_t)(((uint32_t)(id)) << CAN_ID_STD_SHIFT)) & CAN_ID_STD_MASK)
	FlexCAN frame length helper macro.
#define	FLEXCAN_ID_EXT(id)
#define	FLEXCAN_RX_MB_STD_MASK(id, rtr, ide)
	FlexCAN Rx Message Buffer Mask helper macro.
#define	FLEXCAN_RX_MB_EXT_MASK(id, rtr, ide)
#define	FLEXCAN_RX_FIFO_STD_MASK_TYPE_A(id, rtr, ide)
	FlexCAN Legacy Rx FIFO Mask helper macro.
#define	FLEXCAN_RX_FIFO_STD_MASK_TYPE_B_HIGH(id, rtr, ide)
#define	FLEXCAN_RX_FIFO_STD_MASK_TYPE_B_LOW(id, rtr, ide)
#define	FLEXCAN_RX_FIFO_STD_MASK_TYPE_C_HIGH(id)    (((uint32_t)(id)&0x7F8) << 21)
#define	FLEXCAN_RX_FIFO_STD_MASK_TYPE_C_MID_HIGH(id)    (((uint32_t)(id)&0x7F8) << 13)
#define	FLEXCAN_RX_FIFO_STD_MASK_TYPE_C_MID_LOW(id)    (((uint32_t)(id)&0x7F8) << 5)
#define	FLEXCAN_RX_FIFO_STD_MASK_TYPE_C_LOW(id)    (((uint32_t)(id)&0x7F8) >> 3)
#define	FLEXCAN_RX_FIFO_EXT_MASK_TYPE_A(id, rtr, ide)
#define	FLEXCAN_RX_FIFO_EXT_MASK_TYPE_B_HIGH(id, rtr, ide)
#define	FLEXCAN_RX_FIFO_EXT_MASK_TYPE_B_LOW(id, rtr, ide)
#define	FLEXCAN_RX_FIFO_EXT_MASK_TYPE_C_HIGH(id)    ((FLEXCAN_ID_EXT(id) & 0x1FE00000) << 3)
#define	FLEXCAN_RX_FIFO_EXT_MASK_TYPE_C_MID_HIGH(id)
#define	FLEXCAN_RX_FIFO_EXT_MASK_TYPE_C_MID_LOW(id)
#define	FLEXCAN_RX_FIFO_EXT_MASK_TYPE_C_LOW(id)    ((FLEXCAN_ID_EXT(id) & 0x1FE00000) >> 21)
#define	FLEXCAN_RX_FIFO_STD_FILTER_TYPE_A(id, rtr, ide)    FLEXCAN_RX_FIFO_STD_MASK_TYPE_A(id, rtr, ide)
	FlexCAN Rx FIFO Filter helper macro.
#define	FLEXCAN_RX_FIFO_STD_FILTER_TYPE_B_HIGH(id, rtr, ide)
#define	FLEXCAN_RX_FIFO_STD_FILTER_TYPE_B_LOW(id, rtr, ide)
#define	FLEXCAN_RX_FIFO_STD_FILTER_TYPE_C_HIGH(id)
#define	FLEXCAN_RX_FIFO_STD_FILTER_TYPE_C_MID_HIGH(id)
#define	FLEXCAN_RX_FIFO_STD_FILTER_TYPE_C_MID_LOW(id)
#define	FLEXCAN_RX_FIFO_STD_FILTER_TYPE_C_LOW(id)
#define	FLEXCAN_RX_FIFO_EXT_FILTER_TYPE_A(id, rtr, ide)    FLEXCAN_RX_FIFO_EXT_MASK_TYPE_A(id, rtr, ide)
#define	FLEXCAN_RX_FIFO_EXT_FILTER_TYPE_B_HIGH(id, rtr, ide)
#define	FLEXCAN_RX_FIFO_EXT_FILTER_TYPE_B_LOW(id, rtr, ide)
#define	FLEXCAN_RX_FIFO_EXT_FILTER_TYPE_C_HIGH(id)
#define	FLEXCAN_RX_FIFO_EXT_FILTER_TYPE_C_MID_HIGH(id)
#define	FLEXCAN_RX_FIFO_EXT_FILTER_TYPE_C_MID_LOW(id)
#define	FLEXCAN_RX_FIFO_EXT_FILTER_TYPE_C_LOW(id)    FLEXCAN_RX_FIFO_EXT_MASK_TYPE_C_LOW(id)
#define	FLEXCAN_ERROR_AND_STATUS_INIT_FLAG
	FlexCAN interrupt/status flag helper macro.
#define	FLEXCAN_WAKE_UP_FLAG   ((uint32_t)kFLEXCAN_WakeUpIntFlag)
#define	FLEXCAN_MEMORY_ERROR_INIT_FLAG   (0U)
#define	FLEXCAN_MEMORY_ENHANCED_RX_FIFO_INIT_FLAG   (0U)
	FlexCAN Enhanced Rx FIFO base address helper macro.
#define	FLEXCAN_CALLBACK(x)    void(x)(CAN_Type * base, flexcan_handle_t * handle, status_t status, uint32_t result, void *userData)
	FlexCAN transfer callback function.

Initialization and deinitialization
void	FLEXCAN_EnterFreezeMode (CAN_Type *base)
	Enter FlexCAN Freeze Mode.
void	FLEXCAN_ExitFreezeMode (CAN_Type *base)
	Exit FlexCAN Freeze Mode.
uint32_t	FLEXCAN_GetInstance (CAN_Type *base)
	Get the FlexCAN instance from peripheral base address.
bool	FLEXCAN_CalculateImprovedTimingValues (CAN_Type *base, uint32_t bitRate, uint32_t sourceClock_Hz, flexcan_timing_config_t *pTimingConfig)
	Calculates the improved timing values by specific bit Rates for classical CAN.
void	FLEXCAN_Init (CAN_Type *base, const flexcan_config_t *pConfig, uint32_t sourceClock_Hz)
	Initializes a FlexCAN instance.
void	FLEXCAN_Deinit (CAN_Type *base)
	De-initializes a FlexCAN instance.
void	FLEXCAN_GetDefaultConfig (flexcan_config_t *pConfig)
	Gets the default configuration structure.

Configuration.
void	FLEXCAN_SetTimingConfig (CAN_Type *base, const flexcan_timing_config_t *pConfig)
	Sets the FlexCAN classical CAN protocol timing characteristic.
status_t	FLEXCAN_SetBitRate (CAN_Type *base, uint32_t sourceClock_Hz, uint32_t bitRate_Bps)
	Set bit rate of FlexCAN classical CAN frame or CAN FD frame nominal phase.
void	FLEXCAN_SetRxMbGlobalMask (CAN_Type *base, uint32_t mask)
	Sets the FlexCAN receive message buffer global mask.
void	FLEXCAN_SetRxFifoGlobalMask (CAN_Type *base, uint32_t mask)
	Sets the FlexCAN receive FIFO global mask.
void	FLEXCAN_SetRxIndividualMask (CAN_Type *base, uint8_t maskIdx, uint32_t mask)
	Sets the FlexCAN receive individual mask.
void	FLEXCAN_SetTxMbConfig (CAN_Type *base, uint8_t mbIdx, bool enable)
	Configures a FlexCAN transmit message buffer.
void	FLEXCAN_SetRxMbConfig (CAN_Type *base, uint8_t mbIdx, const flexcan_rx_mb_config_t *pRxMbConfig, bool enable)
	Configures a FlexCAN Receive Message Buffer.
void	FLEXCAN_SetRxFifoConfig (CAN_Type *base, const flexcan_rx_fifo_config_t *pRxFifoConfig, bool enable)
	Configures the FlexCAN Legacy Rx FIFO.

Bus Operations
status_t	FLEXCAN_WriteTxMb (CAN_Type *base, uint8_t mbIdx, const flexcan_frame_t *pTxFrame)
	Writes a FlexCAN Message to the Transmit Message Buffer.
status_t	FLEXCAN_ReadRxMb (CAN_Type *base, uint8_t mbIdx, flexcan_frame_t *pRxFrame)
	Reads a FlexCAN Message from Receive Message Buffer.
status_t	FLEXCAN_ReadRxFifo (CAN_Type *base, flexcan_frame_t *pRxFrame)
	Reads a FlexCAN Message from Legacy Rx FIFO.

Transactional
status_t	FLEXCAN_TransferSendBlocking (CAN_Type *base, uint8_t mbIdx, flexcan_frame_t *pTxFrame)
	Performs a polling send transaction on the CAN bus.
status_t	FLEXCAN_TransferReceiveBlocking (CAN_Type *base, uint8_t mbIdx, flexcan_frame_t *pRxFrame)
	Performs a polling receive transaction on the CAN bus.
status_t	FLEXCAN_TransferReceiveFifoBlocking (CAN_Type *base, flexcan_frame_t *pRxFrame)
	Performs a polling receive transaction from Legacy Rx FIFO on the CAN bus.
void	FLEXCAN_TransferCreateHandle (CAN_Type *base, flexcan_handle_t *handle, flexcan_transfer_callback_t callback, void *userData)
	Initializes the FlexCAN handle.
status_t	FLEXCAN_TransferSendNonBlocking (CAN_Type *base, flexcan_handle_t *handle, flexcan_mb_transfer_t *pMbXfer)
	Sends a message using IRQ.
status_t	FLEXCAN_TransferReceiveNonBlocking (CAN_Type *base, flexcan_handle_t *handle, flexcan_mb_transfer_t *pMbXfer)
	Receives a message using IRQ.
status_t	FLEXCAN_TransferReceiveFifoNonBlocking (CAN_Type *base, flexcan_handle_t *handle, flexcan_fifo_transfer_t *pFifoXfer)
	Receives a message from Rx FIFO using IRQ.
status_t	FLEXCAN_TransferGetReceiveFifoCount (CAN_Type *base, flexcan_handle_t *handle, size_t *count)
	Gets the Legacy Rx Fifo transfer status during a interrupt non-blocking receive.
uint32_t	FLEXCAN_GetTimeStamp (flexcan_handle_t *handle, uint8_t mbIdx)
	Gets the detail index of Mailbox's Timestamp by handle.
void	FLEXCAN_TransferAbortSend (CAN_Type *base, flexcan_handle_t *handle, uint8_t mbIdx)
	Aborts the interrupt driven message send process.
void	FLEXCAN_TransferAbortReceive (CAN_Type *base, flexcan_handle_t *handle, uint8_t mbIdx)
	Aborts the interrupt driven message receive process.
void	FLEXCAN_TransferAbortReceiveFifo (CAN_Type *base, flexcan_handle_t *handle)
	Aborts the interrupt driven message receive from Rx FIFO process.
void	FLEXCAN_TransferHandleIRQ (CAN_Type *base, flexcan_handle_t *handle)
	FlexCAN IRQ handle function.

Detailed Description

Macro Definition Documentation

FLEXCAN_CALLBACK

#define FLEXCAN_CALLBACK

(

x

)

void(x)(CAN_Type * base, flexcan_handle_t * handle, status_t status, uint32_t result, void *userData)

FlexCAN transfer callback function.

The FlexCAN transfer callback returns a value from the underlying layer. If the status equals to kStatus_FLEXCAN_ErrorStatus, the result parameter is the Content of FlexCAN status register which can be used to get the working status(or error status) of FlexCAN module. If the status equals to other FlexCAN Message Buffer transfer status, the result is the index of Message Buffer that generate transfer event. If the status equals to other FlexCAN Message Buffer transfer status, the result is meaningless and should be Ignored.

FLEXCAN_ERROR_AND_STATUS_INIT_FLAG

#define FLEXCAN_ERROR_AND_STATUS_INIT_FLAG

Value:

    ((uint32_t)kFLEXCAN_TxWarningIntFlag | (uint32_t)kFLEXCAN_RxWarningIntFlag | (uint32_t)kFLEXCAN_BusOffIntFlag | \
     (uint32_t)kFLEXCAN_ErrorIntFlag | FLEXCAN_MEMORY_ERROR_INIT_FLAG)

FlexCAN interrupt/status flag helper macro.

FLEXCAN_ID_EXT

#define FLEXCAN_ID_EXT

(

id

)

Value:

    (((uint32_t)(((uint32_t)(id)) << CAN_ID_EXT_SHIFT)) & \
     (CAN_ID_EXT_MASK | CAN_ID_STD_MASK))

Extend Frame ID helper macro.

FLEXCAN_ID_STD

#define FLEXCAN_ID_STD

(

id

)

(((uint32_t)(((uint32_t)(id)) << CAN_ID_STD_SHIFT)) & CAN_ID_STD_MASK)

FlexCAN frame length helper macro.

FlexCAN Frame ID helper macro. Standard Frame ID helper macro.

FLEXCAN_RX_FIFO_EXT_FILTER_TYPE_A

#define FLEXCAN_RX_FIFO_EXT_FILTER_TYPE_A	(		id,
			rtr,
			ide
	)		FLEXCAN_RX_FIFO_EXT_MASK_TYPE_A(id, rtr, ide)

Extend Rx FIFO Filter helper macro Type A helper macro.

FLEXCAN_RX_FIFO_EXT_FILTER_TYPE_B_HIGH

#define FLEXCAN_RX_FIFO_EXT_FILTER_TYPE_B_HIGH	(		id,
			rtr,
			ide
	)

Value:

    FLEXCAN_RX_FIFO_EXT_MASK_TYPE_B_HIGH(                    \
        id, rtr, ide)

Extend Rx FIFO Filter helper macro Type B upper part helper macro.

FLEXCAN_RX_FIFO_EXT_FILTER_TYPE_B_LOW

#define FLEXCAN_RX_FIFO_EXT_FILTER_TYPE_B_LOW	(		id,
			rtr,
			ide
	)

Value:

    FLEXCAN_RX_FIFO_EXT_MASK_TYPE_B_LOW(                    \
        id, rtr, ide)

Extend Rx FIFO Filter helper macro Type B lower part helper macro.

FLEXCAN_RX_FIFO_EXT_FILTER_TYPE_C_HIGH

#define FLEXCAN_RX_FIFO_EXT_FILTER_TYPE_C_HIGH

(

id

)

Value:

    FLEXCAN_RX_FIFO_EXT_MASK_TYPE_C_HIGH(          \
        id)

Extend Rx FIFO Filter helper macro Type C upper part helper macro.

FLEXCAN_RX_FIFO_EXT_FILTER_TYPE_C_LOW

#define FLEXCAN_RX_FIFO_EXT_FILTER_TYPE_C_LOW

(

id

)

FLEXCAN_RX_FIFO_EXT_MASK_TYPE_C_LOW(id)

Extend Rx FIFO Filter helper macro Type C lower part helper macro.

FLEXCAN_RX_FIFO_EXT_FILTER_TYPE_C_MID_HIGH

#define FLEXCAN_RX_FIFO_EXT_FILTER_TYPE_C_MID_HIGH

(

id

)

Value:

    FLEXCAN_RX_FIFO_EXT_MASK_TYPE_C_MID_HIGH(          \
        id)

Extend Rx FIFO Filter helper macro Type C mid-upper part helper macro.

FLEXCAN_RX_FIFO_EXT_FILTER_TYPE_C_MID_LOW

#define FLEXCAN_RX_FIFO_EXT_FILTER_TYPE_C_MID_LOW

(

id

)

Value:

    FLEXCAN_RX_FIFO_EXT_MASK_TYPE_C_MID_LOW(          \
        id)

Extend Rx FIFO Filter helper macro Type C mid-lower part helper macro.

FLEXCAN_RX_FIFO_EXT_MASK_TYPE_A

#define FLEXCAN_RX_FIFO_EXT_MASK_TYPE_A	(		id,
			rtr,
			ide
	)

Value:

    (((uint32_t)((uint32_t)(rtr) << 31) | (uint32_t)((uint32_t)(ide) << 30)) | \
     (FLEXCAN_ID_EXT(id) << 1))

Extend Rx FIFO Mask helper macro Type A helper macro.

FLEXCAN_RX_FIFO_EXT_MASK_TYPE_B_HIGH

#define FLEXCAN_RX_FIFO_EXT_MASK_TYPE_B_HIGH	(		id,
			rtr,
			ide
	)

Value:

    (                                                                             \
        ((uint32_t)((uint32_t)(rtr) << 31) | (uint32_t)((uint32_t)(ide) << 30)) | \
        ((FLEXCAN_ID_EXT(id) & 0x1FFF8000)                                        \
         << 1))

Extend Rx FIFO Mask helper macro Type B upper part helper macro.

FLEXCAN_RX_FIFO_EXT_MASK_TYPE_B_LOW

#define FLEXCAN_RX_FIFO_EXT_MASK_TYPE_B_LOW	(		id,
			rtr,
			ide
	)

Value:

    (((uint32_t)((uint32_t)(rtr) << 15) | (uint32_t)((uint32_t)(ide) << 14)) | \
     ((FLEXCAN_ID_EXT(id) & 0x1FFF8000) >>                                     \
      15))

Extend Rx FIFO Mask helper macro Type B lower part helper macro.

FLEXCAN_RX_FIFO_EXT_MASK_TYPE_C_HIGH

#define FLEXCAN_RX_FIFO_EXT_MASK_TYPE_C_HIGH

(

id

)

((FLEXCAN_ID_EXT(id) & 0x1FE00000) << 3)

Extend Rx FIFO Mask helper macro Type C upper part helper macro.

FLEXCAN_RX_FIFO_EXT_MASK_TYPE_C_LOW

#define FLEXCAN_RX_FIFO_EXT_MASK_TYPE_C_LOW

(

id

)

((FLEXCAN_ID_EXT(id) & 0x1FE00000) >> 21)

Extend Rx FIFO Mask helper macro Type C lower part helper macro.

FLEXCAN_RX_FIFO_EXT_MASK_TYPE_C_MID_HIGH

#define FLEXCAN_RX_FIFO_EXT_MASK_TYPE_C_MID_HIGH

(

id

)

Value:

    ((FLEXCAN_ID_EXT(id) & 0x1FE00000) >>            \
     5)

Extend Rx FIFO Mask helper macro Type C mid-upper part helper macro.

FLEXCAN_RX_FIFO_EXT_MASK_TYPE_C_MID_LOW

#define FLEXCAN_RX_FIFO_EXT_MASK_TYPE_C_MID_LOW

(

id

)

Value:

    ((FLEXCAN_ID_EXT(id) & 0x1FE00000) >>           \
     13)

Extend Rx FIFO Mask helper macro Type C mid-lower part helper macro.

FLEXCAN_RX_FIFO_STD_FILTER_TYPE_A

#define FLEXCAN_RX_FIFO_STD_FILTER_TYPE_A	(		id,
			rtr,
			ide
	)		FLEXCAN_RX_FIFO_STD_MASK_TYPE_A(id, rtr, ide)

FlexCAN Rx FIFO Filter helper macro.

Standard Rx FIFO Filter helper macro Type A helper macro.

FLEXCAN_RX_FIFO_STD_FILTER_TYPE_B_HIGH

#define FLEXCAN_RX_FIFO_STD_FILTER_TYPE_B_HIGH	(		id,
			rtr,
			ide
	)

Value:

    FLEXCAN_RX_FIFO_STD_MASK_TYPE_B_HIGH(                    \
        id, rtr, ide)

Standard Rx FIFO Filter helper macro Type B upper part helper macro.

FLEXCAN_RX_FIFO_STD_FILTER_TYPE_B_LOW

#define FLEXCAN_RX_FIFO_STD_FILTER_TYPE_B_LOW	(		id,
			rtr,
			ide
	)

Value:

    FLEXCAN_RX_FIFO_STD_MASK_TYPE_B_LOW(                    \
        id, rtr, ide)

Standard Rx FIFO Filter helper macro Type B lower part helper macro.

FLEXCAN_RX_FIFO_STD_FILTER_TYPE_C_HIGH

#define FLEXCAN_RX_FIFO_STD_FILTER_TYPE_C_HIGH

(

id

)

Value:

    FLEXCAN_RX_FIFO_STD_MASK_TYPE_C_HIGH(          \
        id)

Standard Rx FIFO Filter helper macro Type C upper part helper macro.

FLEXCAN_RX_FIFO_STD_FILTER_TYPE_C_LOW

#define FLEXCAN_RX_FIFO_STD_FILTER_TYPE_C_LOW

(

id

)

Value:

    FLEXCAN_RX_FIFO_STD_MASK_TYPE_C_LOW(          \
        id)

Standard Rx FIFO Filter helper macro Type C lower part helper macro.

FLEXCAN_RX_FIFO_STD_FILTER_TYPE_C_MID_HIGH

#define FLEXCAN_RX_FIFO_STD_FILTER_TYPE_C_MID_HIGH

(

id

)

Value:

    FLEXCAN_RX_FIFO_STD_MASK_TYPE_C_MID_HIGH(          \
        id)

Standard Rx FIFO Filter helper macro Type C mid-upper part helper macro.

FLEXCAN_RX_FIFO_STD_FILTER_TYPE_C_MID_LOW

#define FLEXCAN_RX_FIFO_STD_FILTER_TYPE_C_MID_LOW

(

id

)

Value:

    FLEXCAN_RX_FIFO_STD_MASK_TYPE_C_MID_LOW(          \
        id)

Standard Rx FIFO Filter helper macro Type C mid-lower part helper macro.

FLEXCAN_RX_FIFO_STD_MASK_TYPE_A

#define FLEXCAN_RX_FIFO_STD_MASK_TYPE_A	(		id,
			rtr,
			ide
	)

Value:

    (((uint32_t)((uint32_t)(rtr) << 31) | (uint32_t)((uint32_t)(ide) << 30)) | \
     (FLEXCAN_ID_STD(id) << 1))

FlexCAN Legacy Rx FIFO Mask helper macro.

Standard Rx FIFO Mask helper macro Type A helper macro.

FLEXCAN_RX_FIFO_STD_MASK_TYPE_B_HIGH

#define FLEXCAN_RX_FIFO_STD_MASK_TYPE_B_HIGH	(		id,
			rtr,
			ide
	)

Value:

    (((uint32_t)((uint32_t)(rtr) << 31) | (uint32_t)((uint32_t)(ide) << 30)) | \
     (((uint32_t)(id)&0x7FF) << 19))

Standard Rx FIFO Mask helper macro Type B upper part helper macro.

FLEXCAN_RX_FIFO_STD_MASK_TYPE_B_LOW

#define FLEXCAN_RX_FIFO_STD_MASK_TYPE_B_LOW	(		id,
			rtr,
			ide
	)

Value:

    (((uint32_t)((uint32_t)(rtr) << 15) | (uint32_t)((uint32_t)(ide) << 14)) | \
     (((uint32_t)(id)&0x7FF) << 3))

Standard Rx FIFO Mask helper macro Type B lower part helper macro.

FLEXCAN_RX_FIFO_STD_MASK_TYPE_C_HIGH

#define FLEXCAN_RX_FIFO_STD_MASK_TYPE_C_HIGH

(

id

)

(((uint32_t)(id)&0x7F8) << 21)

Standard Rx FIFO Mask helper macro Type C upper part helper macro.

FLEXCAN_RX_FIFO_STD_MASK_TYPE_C_LOW

#define FLEXCAN_RX_FIFO_STD_MASK_TYPE_C_LOW

(

id

)

(((uint32_t)(id)&0x7F8) >> 3)

Standard Rx FIFO Mask helper macro Type C lower part helper macro.

FLEXCAN_RX_FIFO_STD_MASK_TYPE_C_MID_HIGH

#define FLEXCAN_RX_FIFO_STD_MASK_TYPE_C_MID_HIGH

(

id

)

(((uint32_t)(id)&0x7F8) << 13)

Standard Rx FIFO Mask helper macro Type C mid-upper part helper macro.

FLEXCAN_RX_FIFO_STD_MASK_TYPE_C_MID_LOW

#define FLEXCAN_RX_FIFO_STD_MASK_TYPE_C_MID_LOW

(

id

)

(((uint32_t)(id)&0x7F8) << 5)

Standard Rx FIFO Mask helper macro Type C mid-lower part helper macro.

FLEXCAN_RX_MB_EXT_MASK

#define FLEXCAN_RX_MB_EXT_MASK	(		id,
			rtr,
			ide
	)

Value:

    (((uint32_t)((uint32_t)(rtr) << 31) | (uint32_t)((uint32_t)(ide) << 30)) | \
     FLEXCAN_ID_EXT(id))

Extend Rx Message Buffer Mask helper macro.

FLEXCAN_RX_MB_STD_MASK

#define FLEXCAN_RX_MB_STD_MASK	(		id,
			rtr,
			ide
	)

Value:

    (((uint32_t)((uint32_t)(rtr) << 31) | (uint32_t)((uint32_t)(ide) << 30)) | \
     FLEXCAN_ID_STD(id))

FlexCAN Rx Message Buffer Mask helper macro.

Standard Rx Message Buffer Mask helper macro.

Typedef Documentation

flexcan_clock_source_t

typedef enum _flexcan_clock_source flexcan_clock_source_t

FlexCAN clock source.

Deprecated:

Do not use the kFLEXCAN_ClkSrcOs. It has been superceded kFLEXCAN_ClkSrc0

Do not use the kFLEXCAN_ClkSrcPeri. It has been superceded kFLEXCAN_ClkSrc1

flexcan_config_t

typedef struct _flexcan_config flexcan_config_t

FlexCAN module configuration structure.

Deprecated:

Do not use the baudRate. It has been superceded bitRate

Do not use the baudRateFD. It has been superceded bitRateFD

flexcan_rx_fifo_priority_t

typedef enum _flexcan_rx_fifo_priority flexcan_rx_fifo_priority_t

FlexCAN Enhanced/Legacy Rx FIFO priority.

The matching process starts from the Rx MB(or Enhanced/Legacy Rx FIFO) with higher priority. If no MB(or Enhanced/Legacy Rx FIFO filter) is satisfied, the matching process goes on with the Enhanced/Legacy Rx FIFO(or Rx MB) with lower priority.

flexcan_rx_mb_config_t

typedef struct _flexcan_rx_mb_config flexcan_rx_mb_config_t

FlexCAN Receive Message Buffer configuration structure.

This structure is used as the parameter of FLEXCAN_SetRxMbConfig() function. The FLEXCAN_SetRxMbConfig() function is used to configure FlexCAN Receive Message Buffer. The function abort previous receiving process, clean the Message Buffer and activate the Rx Message Buffer using given Message Buffer setting.

Enumeration Type Documentation

anonymous enum

anonymous enum

FlexCAN transfer status.

Enumerator
kStatus_FLEXCAN_TxBusy	Tx Message Buffer is Busy.
kStatus_FLEXCAN_TxIdle	Tx Message Buffer is Idle.
kStatus_FLEXCAN_TxSwitchToRx	Remote Message is send out and Message buffer changed to Receive one.
kStatus_FLEXCAN_RxBusy	Rx Message Buffer is Busy.
kStatus_FLEXCAN_RxIdle	Rx Message Buffer is Idle.
kStatus_FLEXCAN_RxOverflow	Rx Message Buffer is Overflowed.
kStatus_FLEXCAN_RxFifoBusy	Rx Message FIFO is Busy.
kStatus_FLEXCAN_RxFifoIdle	Rx Message FIFO is Idle.
kStatus_FLEXCAN_RxFifoOverflow	Rx Message FIFO is overflowed.
kStatus_FLEXCAN_RxFifoWarning	Rx Message FIFO is almost overflowed.
kStatus_FLEXCAN_RxFifoDisabled	Rx Message FIFO is disabled during reading.
kStatus_FLEXCAN_ErrorStatus	FlexCAN Module Error and Status.
kStatus_FLEXCAN_WakeUp	FlexCAN is waken up from STOP mode.
kStatus_FLEXCAN_UnHandled	UnHadled Interrupt asserted.
kStatus_FLEXCAN_RxRemote	Rx Remote Message Received in Mail box.

anonymous enum

anonymous enum

FlexCAN Legacy Rx FIFO status flags.

The FlexCAN Legacy Rx FIFO Status enumerations are used to determine the status of the Rx FIFO. Because Rx FIFO occupy the MB0 ~ MB7 (Rx Fifo filter also occupies more Message Buffer space), Rx FIFO status flags are mapped to the corresponding Message Buffer status flags.

Enumerator
kFLEXCAN_RxFifoOverflowFlag	Rx FIFO overflow flag.
kFLEXCAN_RxFifoWarningFlag	Rx FIFO almost full flag.
kFLEXCAN_RxFifoFrameAvlFlag	Frames available in Rx FIFO flag.

_flexcan_clock_source

enum _flexcan_clock_source

FlexCAN clock source.

Deprecated:

Do not use the kFLEXCAN_ClkSrcOs. It has been superceded kFLEXCAN_ClkSrc0

Do not use the kFLEXCAN_ClkSrcPeri. It has been superceded kFLEXCAN_ClkSrc1

Enumerator
kFLEXCAN_ClkSrcOsc	FlexCAN Protocol Engine clock from Oscillator.
kFLEXCAN_ClkSrcPeri	FlexCAN Protocol Engine clock from Peripheral Clock.
kFLEXCAN_ClkSrc0	FlexCAN Protocol Engine clock selected by user as SRC == 0.
kFLEXCAN_ClkSrc1	FlexCAN Protocol Engine clock selected by user as SRC == 1.

_flexcan_error_flags

enum _flexcan_error_flags

FlexCAN error status flags.

The FlexCAN Error Status enumerations is used to report current error of the FlexCAN bus. This enumerations should be used with KFLEXCAN_ErrorFlag in _flexcan_flags enumerations to ditermine which error is generated.

Enumerator
kFLEXCAN_TxErrorWarningFlag	Tx Error Warning Status.
kFLEXCAN_RxErrorWarningFlag	Rx Error Warning Status.
kFLEXCAN_StuffingError	Stuffing Error.
kFLEXCAN_FormError	Form Error.
kFLEXCAN_CrcError	Cyclic Redundancy Check Error.
kFLEXCAN_AckError	Received no ACK on transmission.
kFLEXCAN_Bit0Error	Unable to send dominant bit.
kFLEXCAN_Bit1Error	Unable to send recessive bit.

_flexcan_flags

enum _flexcan_flags

FlexCAN status flags.

This provides constants for the FlexCAN status flags for use in the FlexCAN functions.

Note

The CPU read action clears the bits corresponding to the FlEXCAN_ErrorFlag macro, therefore user need to read status flags and distinguish which error is occur using _flexcan_error_flags enumerations.

Enumerator
kFLEXCAN_SynchFlag	CAN Synchronization Status.
kFLEXCAN_TxWarningIntFlag	Tx Warning Interrupt Flag.
kFLEXCAN_RxWarningIntFlag	Rx Warning Interrupt Flag.
kFLEXCAN_IdleFlag	FlexCAN In IDLE Status.
kFLEXCAN_FaultConfinementFlag	FlexCAN Fault Confinement State.
kFLEXCAN_TransmittingFlag	FlexCAN In Transmission Status.
kFLEXCAN_ReceivingFlag	FlexCAN In Reception Status.
kFLEXCAN_BusOffIntFlag	Bus Off Interrupt Flag.
kFLEXCAN_ErrorIntFlag	CAN Error Interrupt Flag.
kFLEXCAN_WakeUpIntFlag	Self Wake-Up Interrupt Flag.

_flexcan_frame_format

enum _flexcan_frame_format

FlexCAN frame format.

Enumerator
kFLEXCAN_FrameFormatStandard	Standard frame format attribute.
kFLEXCAN_FrameFormatExtend	Extend frame format attribute.

_flexcan_frame_type

enum _flexcan_frame_type

FlexCAN frame type.

Enumerator
kFLEXCAN_FrameTypeData	Data frame type attribute.
kFLEXCAN_FrameTypeRemote	Remote frame type attribute.

_flexcan_interrupt_enable

enum _flexcan_interrupt_enable

FlexCAN interrupt enable enumerations.

This provides constants for the FlexCAN interrupt enable enumerations for use in the FlexCAN functions.

Note

FlexCAN Message Buffers and Legacy Rx FIFO interrupts not included in.

Enumerator
kFLEXCAN_BusOffInterruptEnable	Bus Off interrupt, use bit 15.
kFLEXCAN_ErrorInterruptEnable	CAN Error interrupt, use bit 14.
kFLEXCAN_TxWarningInterruptEnable	Tx Warning interrupt, use bit 11.
kFLEXCAN_RxWarningInterruptEnable	Rx Warning interrupt, use bit 10.
kFLEXCAN_WakeUpInterruptEnable	Self Wake Up interrupt, use bit 26.

_flexcan_rx_fifo_filter_type

enum _flexcan_rx_fifo_filter_type

FlexCAN Rx Fifo Filter type.

Enumerator
kFLEXCAN_RxFifoFilterTypeA	One full ID (standard and extended) per ID Filter element.
kFLEXCAN_RxFifoFilterTypeB	Two full standard IDs or two partial 14-bit ID slices per ID Filter Table element.
kFLEXCAN_RxFifoFilterTypeC	Four partial 8-bit Standard or extended ID slices per ID Filter Table element.
kFLEXCAN_RxFifoFilterTypeD	All frames rejected.

_flexcan_rx_fifo_priority

enum _flexcan_rx_fifo_priority

FlexCAN Enhanced/Legacy Rx FIFO priority.

The matching process starts from the Rx MB(or Enhanced/Legacy Rx FIFO) with higher priority. If no MB(or Enhanced/Legacy Rx FIFO filter) is satisfied, the matching process goes on with the Enhanced/Legacy Rx FIFO(or Rx MB) with lower priority.

Enumerator
kFLEXCAN_RxFifoPrioLow	Matching process start from Rx Message Buffer first.
kFLEXCAN_RxFifoPrioHigh	Matching process start from Enhanced/Legacy Rx FIFO first.

_flexcan_wake_up_source

enum _flexcan_wake_up_source

FlexCAN wake up source.

Enumerator
kFLEXCAN_WakeupSrcUnfiltered	FlexCAN uses unfiltered Rx input to detect edge.
kFLEXCAN_WakeupSrcFiltered	FlexCAN uses filtered Rx input to detect edge.

Function Documentation

FLEXCAN_CalculateImprovedTimingValues()

bool FLEXCAN_CalculateImprovedTimingValues	(	CAN_Type *	base,
		uint32_t	bitRate,
		uint32_t	sourceClock_Hz,
		flexcan_timing_config_t *	pTimingConfig
	)

Calculates the improved timing values by specific bit Rates for classical CAN.

This function use to calculates the Classical CAN timing values according to the given bit rate. The Calculated timing values will be set in CTRL1/CBT/ENCBT register. The calculation is based on the recommendation of the CiA 301 v4.2.0 and previous version document.

Parameters

base	FlexCAN peripheral base address.
bitRate	The classical CAN speed in bps defined by user, should be less than or equal to 1Mbps.
sourceClock_Hz	The Source clock frequency in Hz.
pTimingConfig	Pointer to the FlexCAN timing configuration structure.

Returns

TRUE if timing configuration found, FALSE if failed to find configuration.

brief Calculates the improved timing values by specific bit Rates for classical CAN.

This function use to calculates the Classical CAN timing values according to the given bit rate. The Calculated timing values will be set in CTRL1/CBT/ENCBT register. The calculation is based on the recommendation of the CiA 301 v4.2.0 and previous version document.

param base FlexCAN peripheral base address. param bitRate The classical CAN speed in bps defined by user, should be less than or equal to 1Mbps. param sourceClock_Hz The Source clock frequency in Hz. param pTimingConfig Pointer to the FlexCAN timing configuration structure.

return TRUE if timing configuration found, FALSE if failed to find configuration.

FLEXCAN_Deinit()

void FLEXCAN_Deinit

(

CAN_Type *

base

)

De-initializes a FlexCAN instance.

This function disables the FlexCAN module clock and sets all register values to the reset value.

Parameters

base	FlexCAN peripheral base address.

brief De-initializes a FlexCAN instance.

This function disables the FlexCAN module clock and sets all register values to the reset value.

param base FlexCAN peripheral base address.

FLEXCAN_EnterFreezeMode()

void FLEXCAN_EnterFreezeMode

(

CAN_Type *

base

)

Enter FlexCAN Freeze Mode.

This function makes the FlexCAN work under Freeze Mode.

Parameters

base	FlexCAN peripheral base address.

brief Enter FlexCAN Freeze Mode.

This function makes the FlexCAN work under Freeze Mode.

param base FlexCAN peripheral base address.

FLEXCAN_ExitFreezeMode()

void FLEXCAN_ExitFreezeMode

(

CAN_Type *

base

)

Exit FlexCAN Freeze Mode.

This function makes the FlexCAN leave Freeze Mode.

Parameters

base	FlexCAN peripheral base address.

brief Exit FlexCAN Freeze Mode.

This function makes the FlexCAN leave Freeze Mode.

param base FlexCAN peripheral base address.

FLEXCAN_GetDefaultConfig()

void FLEXCAN_GetDefaultConfig

(

flexcan_config_t *

pConfig

)

Gets the default configuration structure.

This function initializes the FlexCAN configuration structure to default values. The default values are as follows. flexcanConfig->clkSrc = kFLEXCAN_ClkSrc0; flexcanConfig->bitRate = 1000000U; flexcanConfig->bitRateFD = 2000000U; flexcanConfig->maxMbNum = 16; flexcanConfig->enableLoopBack = false; flexcanConfig->enableSelfWakeup = false; flexcanConfig->enableIndividMask = false; flexcanConfig->disableSelfReception = false; flexcanConfig->enableListenOnlyMode = false; flexcanConfig->enableDoze = false; flexcanConfig->enableMemoryErrorControl = true; flexcanConfig->enableNonCorrectableErrorEnterFreeze = true; flexcanConfig.timingConfig = timingConfig;

Parameters

pConfig

Pointer to the FlexCAN configuration structure.

brief Gets the default configuration structure.

This function initializes the FlexCAN configuration structure to default values. The default values are as follows. flexcanConfig->clkSrc = kFLEXCAN_ClkSrc0; flexcanConfig->bitRate = 1000000U; flexcanConfig->bitRateFD = 2000000U; flexcanConfig->maxMbNum = 16; flexcanConfig->enableLoopBack = false; flexcanConfig->enableSelfWakeup = false; flexcanConfig->enableIndividMask = false; flexcanConfig->disableSelfReception = false; flexcanConfig->enableListenOnlyMode = false; flexcanConfig->enableDoze = false; flexcanConfig->enablePretendedeNetworking = false; flexcanConfig->enableMemoryErrorControl = true; flexcanConfig->enableNonCorrectableErrorEnterFreeze = true; flexcanConfig->enableTransceiverDelayMeasure = true; flexcanConfig.timingConfig = timingConfig;

param pConfig Pointer to the FlexCAN configuration structure.

FLEXCAN_GetInstance()

uint32_t FLEXCAN_GetInstance

(

CAN_Type *

base

)

Get the FlexCAN instance from peripheral base address.

Parameters

base	FlexCAN peripheral base address.

Returns

FlexCAN instance.

brief Get the FlexCAN instance from peripheral base address.

param base FlexCAN peripheral base address. return FlexCAN instance.

FLEXCAN_GetTimeStamp()

uint32_t FLEXCAN_GetTimeStamp	(	flexcan_handle_t *	handle,
		uint8_t	mbIdx
	)

Gets the detail index of Mailbox's Timestamp by handle.

Then function can only be used when calling non-blocking Data transfer (TX/RX) API, After TX/RX data transfer done (User can get the status by handler's callback function), we can get the detail index of Mailbox's timestamp by handle, Detail non-blocking data transfer API (TX/RX) contain. -FLEXCAN_TransferSendNonBlocking -FLEXCAN_TransferFDSendNonBlocking -FLEXCAN_TransferReceiveNonBlocking -FLEXCAN_TransferFDReceiveNonBlocking -FLEXCAN_TransferReceiveFifoNonBlocking

Parameters

handle	FlexCAN handle pointer.
mbIdx	The FlexCAN Message Buffer index.

Return values

the	index of mailbox 's timestamp stored in the handle.

brief Gets the detail index of Mailbox's Timestamp by handle.

Then function can only be used when calling non-blocking Data transfer (TX/RX) API, After TX/RX data transfer done (User can get the status by handler's callback function), we can get the detail index of Mailbox's timestamp by handle, Detail non-blocking data transfer API (TX/RX) contain. -FLEXCAN_TransferSendNonBlocking -FLEXCAN_TransferFDSendNonBlocking -FLEXCAN_TransferReceiveNonBlocking -FLEXCAN_TransferFDReceiveNonBlocking -FLEXCAN_TransferReceiveFifoNonBlocking

param handle FlexCAN handle pointer. param mbIdx The FlexCAN FD Message Buffer index. return the index of mailbox 's timestamp stored in the handle.

FLEXCAN_Init()

void FLEXCAN_Init	(	CAN_Type *	base,
		const flexcan_config_t *	pConfig,
		uint32_t	sourceClock_Hz
	)

Initializes a FlexCAN instance.

This function initializes the FlexCAN module with user-defined settings. This example shows how to set up the flexcan_config_t parameters and how to call the FLEXCAN_Init function by passing in these parameters.

flexcan_config_t flexcanConfig;
flexcanConfig.clkSrc               = kFLEXCAN_ClkSrc0;
flexcanConfig.bitRate              = 1000000U;
flexcanConfig.maxMbNum             = 16;
flexcanConfig.enableLoopBack       = false;
flexcanConfig.enableSelfWakeup     = false;
flexcanConfig.enableIndividMask    = false;
flexcanConfig.enableDoze           = false;
flexcanConfig.disableSelfReception = false;
flexcanConfig.enableListenOnlyMode = false;
flexcanConfig.timingConfig         = timingConfig;
FLEXCAN_Init(CAN0, &flexcanConfig, 40000000UL);

Parameters

base	FlexCAN peripheral base address.
pConfig	Pointer to the user-defined configuration structure.
sourceClock_Hz	FlexCAN Protocol Engine clock source frequency in Hz.

brief Initializes a FlexCAN instance.

This function initializes the FlexCAN module with user-defined settings. This example shows how to set up the flexcan_config_t parameters and how to call the FLEXCAN_Init function by passing in these parameters. code flexcan_config_t flexcanConfig; flexcanConfig.clkSrc = kFLEXCAN_ClkSrc0; flexcanConfig.bitRate = 1000000U; flexcanConfig.maxMbNum = 16; flexcanConfig.enableLoopBack = false; flexcanConfig.enableSelfWakeup = false; flexcanConfig.enableIndividMask = false; flexcanConfig.disableSelfReception = false; flexcanConfig.enableListenOnlyMode = false; flexcanConfig.enableDoze = false; flexcanConfig.timingConfig = timingConfig; FLEXCAN_Init(CAN0, &flexcanConfig, 40000000UL); endcode

param base FlexCAN peripheral base address. param pConfig Pointer to the user-defined configuration structure. param sourceClock_Hz FlexCAN Protocol Engine clock source frequency in Hz.

FLEXCAN_ReadRxFifo()

status_t FLEXCAN_ReadRxFifo	(	CAN_Type *	base,
		flexcan_frame_t *	pRxFrame
	)

Reads a FlexCAN Message from Legacy Rx FIFO.

This function reads a CAN message from the FlexCAN Legacy Rx FIFO.

Parameters

base	FlexCAN peripheral base address.
pRxFrame	Pointer to CAN message frame structure for reception.

Return values

kStatus_Success	- Read Message from Rx FIFO successfully.
kStatus_Fail	- Rx FIFO is not enabled.

brief Reads a FlexCAN Message from Legacy Rx FIFO.

This function reads a CAN message from the FlexCAN Legacy Rx FIFO.

param base FlexCAN peripheral base address. param pRxFrame Pointer to CAN message frame structure for reception. retval kStatus_Success - Read Message from Rx FIFO successfully. retval kStatus_Fail - Rx FIFO is not enabled.

FLEXCAN_ReadRxMb()

status_t FLEXCAN_ReadRxMb	(	CAN_Type *	base,
		uint8_t	mbIdx,
		flexcan_frame_t *	pRxFrame
	)

Reads a FlexCAN Message from Receive Message Buffer.

This function reads a CAN message from a specified Receive Message Buffer. The function fills a receive CAN message frame structure with just received data and activates the Message Buffer again. The function returns immediately.

Parameters

base	FlexCAN peripheral base address.
mbIdx	The FlexCAN Message Buffer index.
pRxFrame	Pointer to CAN message frame structure for reception.

Return values

kStatus_Success	- Rx Message Buffer is full and has been read successfully.
kStatus_FLEXCAN_RxOverflow	- Rx Message Buffer is already overflowed and has been read successfully.
kStatus_Fail	- Rx Message Buffer is empty.

brief Reads a FlexCAN Message from Receive Message Buffer.

This function reads a CAN message from a specified Receive Message Buffer. The function fills a receive CAN message frame structure with just received data and activates the Message Buffer again. The function returns immediately.

param base FlexCAN peripheral base address. param mbIdx The FlexCAN Message Buffer index. param pRxFrame Pointer to CAN message frame structure for reception. retval kStatus_Success - Rx Message Buffer is full and has been read successfully. retval kStatus_FLEXCAN_RxOverflow - Rx Message Buffer is already overflowed and has been read successfully. retval kStatus_Fail - Rx Message Buffer is empty.

FLEXCAN_SetBitRate()

status_t FLEXCAN_SetBitRate	(	CAN_Type *	base,
		uint32_t	sourceClock_Hz,
		uint32_t	bitRate_Bps
	)

Set bit rate of FlexCAN classical CAN frame or CAN FD frame nominal phase.

This function set the bit rate of classical CAN frame or CAN FD frame nominal phase base on FLEXCAN_CalculateImprovedTimingValues() API calculated timing values.

Note

Calling FLEXCAN_SetBitRate() overrides the bit rate set in FLEXCAN_Init().

Parameters

base	FlexCAN peripheral base address.
sourceClock_Hz	Source Clock in Hz.
bitRate_Bps	Bit rate in Bps.

Returns

kStatus_Success - Set CAN baud rate (only Nominal phase) successfully.

brief Set bit rate of FlexCAN classical CAN frame or CAN FD frame nominal phase.

This function set the bit rate of classical CAN frame or CAN FD frame nominal phase base on FLEXCAN_CalculateImprovedTimingValues() API calculated timing values.

note Calling FLEXCAN_SetBitRate() overrides the bit rate set in FLEXCAN_Init().

param base FlexCAN peripheral base address. param sourceClock_Hz Source Clock in Hz. param bitRate_Bps Bit rate in Bps. return kStatus_Success - Set CAN baud rate (only Nominal phase) successfully.

FLEXCAN_SetRxFifoConfig()

void FLEXCAN_SetRxFifoConfig	(	CAN_Type *	base,
		const flexcan_rx_fifo_config_t *	pRxFifoConfig,
		bool	enable
	)

Configures the FlexCAN Legacy Rx FIFO.

This function configures the FlexCAN Rx FIFO with given configuration.

Note

Legacy Rx FIFO only can receive classic CAN message.

Parameters

base	FlexCAN peripheral base address.
pRxFifoConfig	Pointer to the FlexCAN Legacy Rx FIFO configuration structure. Can be NULL when enable parameter is false.
enable	Enable/disable Legacy Rx FIFO. true: Enable Legacy Rx FIFO. false: Disable Legacy Rx FIFO.

brief Configures the FlexCAN Legacy Rx FIFO.

This function configures the FlexCAN Rx FIFO with given configuration. note Legacy Rx FIFO only can receive classic CAN message.

param base FlexCAN peripheral base address. param pRxFifoConfig Pointer to the FlexCAN Legacy Rx FIFO configuration structure. Can be NULL when enable parameter is false. param enable Enable/disable Legacy Rx FIFO.

• true: Enable Legacy Rx FIFO.
• false: Disable Legacy Rx FIFO.

FLEXCAN_SetRxFifoGlobalMask()

void FLEXCAN_SetRxFifoGlobalMask	(	CAN_Type *	base,
		uint32_t	mask
	)

Sets the FlexCAN receive FIFO global mask.

This function sets the global mask for FlexCAN FIFO in a matching process.

Parameters

base	FlexCAN peripheral base address.
mask	Rx Fifo Global Mask value.

brief Sets the FlexCAN receive FIFO global mask.

This function sets the global mask for FlexCAN FIFO in a matching process.

param base FlexCAN peripheral base address. param mask Rx Fifo Global Mask value.

FLEXCAN_SetRxIndividualMask()

void FLEXCAN_SetRxIndividualMask	(	CAN_Type *	base,
		uint8_t	maskIdx,
		uint32_t	mask
	)

Sets the FlexCAN receive individual mask.

This function sets the individual mask for the FlexCAN matching process. The configuration is only effective when the Rx individual mask is enabled in the FLEXCAN_Init(). If the Rx FIFO is disabled, the individual mask is applied to the corresponding Message Buffer. If the Rx FIFO is enabled, the individual mask for Rx FIFO occupied Message Buffer is applied to the Rx Filter with the same index. Note that only the first 32 individual masks can be used as the Rx FIFO filter mask.

Parameters

base	FlexCAN peripheral base address.
maskIdx	The Index of individual Mask.
mask	Rx Individual Mask value.

brief Sets the FlexCAN receive individual mask.

This function sets the individual mask for the FlexCAN matching process. The configuration is only effective when the Rx individual mask is enabled in the FLEXCAN_Init(). If the Rx FIFO is disabled, the individual mask is applied to the corresponding Message Buffer. If the Rx FIFO is enabled, the individual mask for Rx FIFO occupied Message Buffer is applied to the Rx Filter with the same index. Note that only the first 32 individual masks can be used as the Rx FIFO filter mask.

param base FlexCAN peripheral base address. param maskIdx The Index of individual Mask. param mask Rx Individual Mask value.

FLEXCAN_SetRxMbConfig()

void FLEXCAN_SetRxMbConfig	(	CAN_Type *	base,
		uint8_t	mbIdx,
		const flexcan_rx_mb_config_t *	pRxMbConfig,
		bool	enable
	)

Configures a FlexCAN Receive Message Buffer.

This function cleans a FlexCAN build-in Message Buffer and configures it as a Receive Message Buffer.

Parameters

base	FlexCAN peripheral base address.
mbIdx	The Message Buffer index.
pRxMbConfig	Pointer to the FlexCAN Message Buffer configuration structure.
enable	Enable/disable Rx Message Buffer. true: Enable Rx Message Buffer. false: Disable Rx Message Buffer.

brief Configures a FlexCAN Receive Message Buffer.

This function cleans a FlexCAN build-in Message Buffer and configures it as a Receive Message Buffer.

param base FlexCAN peripheral base address. param mbIdx The Message Buffer index. param pRxMbConfig Pointer to the FlexCAN Message Buffer configuration structure. param enable Enable/disable Rx Message Buffer.

• true: Enable Rx Message Buffer.
• false: Disable Rx Message Buffer.

FLEXCAN_SetRxMbGlobalMask()

void FLEXCAN_SetRxMbGlobalMask	(	CAN_Type *	base,
		uint32_t	mask
	)

Sets the FlexCAN receive message buffer global mask.

This function sets the global mask for the FlexCAN message buffer in a matching process. The configuration is only effective when the Rx individual mask is disabled in the FLEXCAN_Init().

Parameters

base	FlexCAN peripheral base address.
mask	Rx Message Buffer Global Mask value.

brief Sets the FlexCAN receive message buffer global mask.

This function sets the global mask for the FlexCAN message buffer in a matching process. The configuration is only effective when the Rx individual mask is disabled in the FLEXCAN_Init().

param base FlexCAN peripheral base address. param mask Rx Message Buffer Global Mask value.

FLEXCAN_SetTimingConfig()

void FLEXCAN_SetTimingConfig	(	CAN_Type *	base,
		const flexcan_timing_config_t *	pConfig
	)

Sets the FlexCAN classical CAN protocol timing characteristic.

This function gives user settings to classical CAN or CAN FD nominal phase timing characteristic. The function is for an experienced user. For less experienced users, call the FLEXCAN_SetBitRate() instead.

Note

Calling FLEXCAN_SetTimingConfig() overrides the bit rate set in FLEXCAN_Init() or FLEXCAN_SetBitRate().

Parameters

base	FlexCAN peripheral base address.
pConfig	Pointer to the timing configuration structure.

brief Sets the FlexCAN classical protocol timing characteristic.

This function gives user settings to classical CAN or CAN FD nominal phase timing characteristic. The function is for an experienced user. For less experienced users, call the FLEXCAN_GetDefaultConfig() and get the default timing characteristicsthe, then call FLEXCAN_Init() and fill the bit rate field.

note Calling FLEXCAN_SetTimingConfig() overrides the bit rate set in FLEXCAN_Init().

param base FlexCAN peripheral base address. param pConfig Pointer to the timing configuration structure.

FLEXCAN_SetTxMbConfig()

void FLEXCAN_SetTxMbConfig	(	CAN_Type *	base,
		uint8_t	mbIdx,
		bool	enable
	)

Configures a FlexCAN transmit message buffer.

This function aborts the previous transmission, cleans the Message Buffer, and configures it as a Transmit Message Buffer.

Parameters

base	FlexCAN peripheral base address.
mbIdx	The Message Buffer index.
enable	Enable/disable Tx Message Buffer. true: Enable Tx Message Buffer. false: Disable Tx Message Buffer.

brief Configures a FlexCAN transmit message buffer.

This function aborts the previous transmission, cleans the Message Buffer, and configures it as a Transmit Message Buffer.

param base FlexCAN peripheral base address. param mbIdx The Message Buffer index. param enable Enable/disable Tx Message Buffer.

• true: Enable Tx Message Buffer.
• false: Disable Tx Message Buffer.

FLEXCAN_TransferAbortReceive()

void FLEXCAN_TransferAbortReceive	(	CAN_Type *	base,
		flexcan_handle_t *	handle,
		uint8_t	mbIdx
	)

Aborts the interrupt driven message receive process.

This function aborts the interrupt driven message receive process.

Parameters

base	FlexCAN peripheral base address.
handle	FlexCAN handle pointer.
mbIdx	The FlexCAN Message Buffer index.

brief Aborts the interrupt driven message receive process.

This function aborts the interrupt driven message receive process.

param base FlexCAN peripheral base address. param handle FlexCAN handle pointer. param mbIdx The FlexCAN Message Buffer index.

FLEXCAN_TransferAbortReceiveFifo()

void FLEXCAN_TransferAbortReceiveFifo	(	CAN_Type *	base,
		flexcan_handle_t *	handle
	)

Aborts the interrupt driven message receive from Rx FIFO process.

This function aborts the interrupt driven message receive from Rx FIFO process.

Parameters

base	FlexCAN peripheral base address.
handle	FlexCAN handle pointer.

brief Aborts the interrupt driven message receive from Legacy Rx FIFO process.

This function aborts the interrupt driven message receive from Legacy Rx FIFO process.

param base FlexCAN peripheral base address. param handle FlexCAN handle pointer.

FLEXCAN_TransferAbortSend()

void FLEXCAN_TransferAbortSend	(	CAN_Type *	base,
		flexcan_handle_t *	handle,
		uint8_t	mbIdx
	)

Aborts the interrupt driven message send process.

This function aborts the interrupt driven message send process.

Parameters

base	FlexCAN peripheral base address.
handle	FlexCAN handle pointer.
mbIdx	The FlexCAN Message Buffer index.

brief Aborts the interrupt driven message send process.

This function aborts the interrupt driven message send process.

param base FlexCAN peripheral base address. param handle FlexCAN handle pointer. param mbIdx The FlexCAN Message Buffer index.

FLEXCAN_TransferCreateHandle()

void FLEXCAN_TransferCreateHandle	(	CAN_Type *	base,
		flexcan_handle_t *	handle,
		flexcan_transfer_callback_t	callback,
		void *	userData
	)

Initializes the FlexCAN handle.

This function initializes the FlexCAN handle, which can be used for other FlexCAN transactional APIs. Usually, for a specified FlexCAN instance, call this API once to get the initialized handle.

Parameters

base	FlexCAN peripheral base address.
handle	FlexCAN handle pointer.
callback	The callback function.
userData	The parameter of the callback function.

brief Initializes the FlexCAN handle.

This function initializes the FlexCAN handle, which can be used for other FlexCAN transactional APIs. Usually, for a specified FlexCAN instance, call this API once to get the initialized handle.

param base FlexCAN peripheral base address. param handle FlexCAN handle pointer. param callback The callback function. param userData The parameter of the callback function.

FLEXCAN_TransferGetReceiveFifoCount()

status_t FLEXCAN_TransferGetReceiveFifoCount	(	CAN_Type *	base,
		flexcan_handle_t *	handle,
		size_t *	count
	)

Gets the Legacy Rx Fifo transfer status during a interrupt non-blocking receive.

Parameters

base	FlexCAN peripheral base address.
handle	FlexCAN handle pointer.
count	Number of CAN messages receive so far by the non-blocking transaction.

Return values

kStatus_InvalidArgument	count is Invalid.
kStatus_Success	Successfully return the count.

brief Gets the Legacy Rx Fifo transfer status during a interrupt non-blocking receive.

param base FlexCAN peripheral base address. param handle FlexCAN handle pointer. param count Number of CAN messages receive so far by the non-blocking transaction. retval kStatus_InvalidArgument count is Invalid. retval kStatus_Success Successfully return the count.

FLEXCAN_TransferHandleIRQ()

void FLEXCAN_TransferHandleIRQ	(	CAN_Type *	base,
		flexcan_handle_t *	handle
	)

FlexCAN IRQ handle function.

This function handles the FlexCAN Error, the Message Buffer, and the Rx FIFO IRQ request.

Parameters

base	FlexCAN peripheral base address.
handle	FlexCAN handle pointer.

brief FlexCAN IRQ handle function.

This function handles the FlexCAN Error, the Message Buffer, and the Rx FIFO IRQ request.

param base FlexCAN peripheral base address. param handle FlexCAN handle pointer.

FLEXCAN_TransferReceiveBlocking()

status_t FLEXCAN_TransferReceiveBlocking	(	CAN_Type *	base,
		uint8_t	mbIdx,
		flexcan_frame_t *	pRxFrame
	)

Performs a polling receive transaction on the CAN bus.

Note

A transfer handle does not need to be created before calling this API.

Parameters

base	FlexCAN peripheral base pointer.
mbIdx	The FlexCAN Message Buffer index.
pRxFrame	Pointer to CAN message frame structure for reception.

Return values

kStatus_Success	- Rx Message Buffer is full and has been read successfully.
kStatus_FLEXCAN_RxOverflow	- Rx Message Buffer is already overflowed and has been read successfully.
kStatus_Fail	- Rx Message Buffer is empty.

brief Performs a polling receive transaction on the CAN bus.

note A transfer handle does not need to be created before calling this API.

param base FlexCAN peripheral base pointer. param mbIdx The FlexCAN Message Buffer index. param pRxFrame Pointer to CAN message frame structure for reception. retval kStatus_Success - Rx Message Buffer is full and has been read successfully. retval kStatus_FLEXCAN_RxOverflow - Rx Message Buffer is already overflowed and has been read successfully. retval kStatus_Fail - Rx Message Buffer is empty.

FLEXCAN_TransferReceiveFifoBlocking()

status_t FLEXCAN_TransferReceiveFifoBlocking	(	CAN_Type *	base,
		flexcan_frame_t *	pRxFrame
	)

Performs a polling receive transaction from Legacy Rx FIFO on the CAN bus.

Note

A transfer handle does not need to be created before calling this API.

Parameters

base	FlexCAN peripheral base pointer.
pRxFrame	Pointer to CAN message frame structure for reception.

Return values

kStatus_Success	- Read Message from Rx FIFO successfully.
kStatus_Fail	- Rx FIFO is not enabled.

brief Performs a polling receive transaction from Legacy Rx FIFO on the CAN bus.

note A transfer handle does not need to be created before calling this API.

param base FlexCAN peripheral base pointer. param pRxFrame Pointer to CAN message frame structure for reception. retval kStatus_Success - Read Message from Rx FIFO successfully. retval kStatus_Fail - Rx FIFO is not enabled.

FLEXCAN_TransferReceiveFifoNonBlocking()

status_t FLEXCAN_TransferReceiveFifoNonBlocking	(	CAN_Type *	base,
		flexcan_handle_t *	handle,
		flexcan_fifo_transfer_t *	pFifoXfer
	)

Receives a message from Rx FIFO using IRQ.

This function receives a message using IRQ. This is a non-blocking function, which returns right away. When all messages have been received, the receive callback function is called.

Parameters

base	FlexCAN peripheral base address.
handle	FlexCAN handle pointer.
pFifoXfer	FlexCAN Rx FIFO transfer structure. See the flexcan_fifo_transfer_t.

Return values

kStatus_Success	- Start Rx FIFO receiving process successfully.
kStatus_FLEXCAN_RxFifoBusy	- Rx FIFO is currently in use.

brief Receives a message from Legacy Rx FIFO using IRQ.

This function receives a message using IRQ. This is a non-blocking function, which returns right away. When all messages have been received, the receive callback function is called.

param base FlexCAN peripheral base address. param handle FlexCAN handle pointer. param pFifoXfer FlexCAN Rx FIFO transfer structure. See the ref flexcan_fifo_transfer_t. retval kStatus_Success - Start Rx FIFO receiving process successfully. retval kStatus_FLEXCAN_RxFifoBusy - Rx FIFO is currently in use.

FLEXCAN_TransferReceiveNonBlocking()

status_t FLEXCAN_TransferReceiveNonBlocking	(	CAN_Type *	base,
		flexcan_handle_t *	handle,
		flexcan_mb_transfer_t *	pMbXfer
	)

Receives a message using IRQ.

This function receives a message using IRQ. This is non-blocking function, which returns right away. When the message has been received, the receive callback function is called.

Parameters

base	FlexCAN peripheral base address.
handle	FlexCAN handle pointer.
pMbXfer	FlexCAN Message Buffer transfer structure. See the flexcan_mb_transfer_t.

Return values

kStatus_Success	- Start Rx Message Buffer receiving process successfully.
kStatus_FLEXCAN_RxBusy	- Rx Message Buffer is in use.

brief Receives a message using IRQ.

This function receives a message using IRQ. This is non-blocking function, which returns right away. When the message has been received, the receive callback function is called.

param base FlexCAN peripheral base address. param handle FlexCAN handle pointer. param pMbXfer FlexCAN Message Buffer transfer structure. See the flexcan_mb_transfer_t. retval kStatus_Success - Start Rx Message Buffer receiving process successfully. retval kStatus_FLEXCAN_RxBusy - Rx Message Buffer is in use.

FLEXCAN_TransferSendBlocking()

status_t FLEXCAN_TransferSendBlocking	(	CAN_Type *	base,
		uint8_t	mbIdx,
		flexcan_frame_t *	pTxFrame
	)

Performs a polling send transaction on the CAN bus.

Note

A transfer handle does not need to be created before calling this API.

Parameters

base	FlexCAN peripheral base pointer.
mbIdx	The FlexCAN Message Buffer index.
pTxFrame	Pointer to CAN message frame to be sent.

Return values

kStatus_Success	- Write Tx Message Buffer Successfully.
kStatus_Fail	- Tx Message Buffer is currently in use.

brief Performs a polling send transaction on the CAN bus.

note A transfer handle does not need to be created before calling this API.

param base FlexCAN peripheral base pointer. param mbIdx The FlexCAN Message Buffer index. param pTxFrame Pointer to CAN message frame to be sent. retval kStatus_Success - Write Tx Message Buffer Successfully. retval kStatus_Fail - Tx Message Buffer is currently in use.

FLEXCAN_TransferSendNonBlocking()

status_t FLEXCAN_TransferSendNonBlocking	(	CAN_Type *	base,
		flexcan_handle_t *	handle,
		flexcan_mb_transfer_t *	pMbXfer
	)

Sends a message using IRQ.

This function sends a message using IRQ. This is a non-blocking function, which returns right away. When messages have been sent out, the send callback function is called.

Parameters

base	FlexCAN peripheral base address.
handle	FlexCAN handle pointer.
pMbXfer	FlexCAN Message Buffer transfer structure. See the flexcan_mb_transfer_t.

Return values

kStatus_Success	Start Tx Message Buffer sending process successfully.
kStatus_Fail	Write Tx Message Buffer failed.
kStatus_FLEXCAN_TxBusy	Tx Message Buffer is in use.

brief Sends a message using IRQ.

This function sends a message using IRQ. This is a non-blocking function, which returns right away. When messages have been sent out, the send callback function is called.

param base FlexCAN peripheral base address. param handle FlexCAN handle pointer. param pMbXfer FlexCAN Message Buffer transfer structure. See the flexcan_mb_transfer_t. retval kStatus_Success Start Tx Message Buffer sending process successfully. retval kStatus_Fail Write Tx Message Buffer failed. retval kStatus_FLEXCAN_TxBusy Tx Message Buffer is in use.

FLEXCAN_WriteTxMb()

status_t FLEXCAN_WriteTxMb	(	CAN_Type *	base,
		uint8_t	mbIdx,
		const flexcan_frame_t *	pTxFrame
	)

Writes a FlexCAN Message to the Transmit Message Buffer.

This function writes a CAN Message to the specified Transmit Message Buffer and changes the Message Buffer state to start CAN Message transmit. After that the function returns immediately.

Parameters

base	FlexCAN peripheral base address.
mbIdx	The FlexCAN Message Buffer index.
pTxFrame	Pointer to CAN message frame to be sent.

Return values

kStatus_Success	- Write Tx Message Buffer Successfully.
kStatus_Fail	- Tx Message Buffer is currently in use.

brief Writes a FlexCAN Message to the Transmit Message Buffer.

This function writes a CAN Message to the specified Transmit Message Buffer and changes the Message Buffer state to start CAN Message transmit. After that the function returns immediately.

param base FlexCAN peripheral base address. param mbIdx The FlexCAN Message Buffer index. param pTxFrame Pointer to CAN message frame to be sent. retval kStatus_Success - Write Tx Message Buffer Successfully. retval kStatus_Fail - Tx Message Buffer is currently in use.

Variable Documentation

__pad0__ [1/3]

uint32_t _flexcan_frame::__pad0__

Reserved.

[2/3]

uint32_t { ... } ::__pad0__

Reserved.

[3/3]

uint32_t { ... } ::__pad0__

Reserved.

[1/2]

uint32_t { ... } ::baudRate

FlexCAN bit rate in bps, for classical CAN or CANFD nominal phase.

baudRate [2/2]

uint32_t _flexcan_config::baudRate

FlexCAN bit rate in bps, for classical CAN or CANFD nominal phase.

bitRate [1/2]

uint32_t _flexcan_config::bitRate

FlexCAN bit rate in bps, for classical CAN or CANFD nominal phase.

[2/2]

uint32_t { ... } ::bitRate

FlexCAN bit rate in bps, for classical CAN or CANFD nominal phase.

callback

flexcan_transfer_callback_t _flexcan_handle::callback

Callback function.

clkSrc

flexcan_clock_source_t _flexcan_config::clkSrc

Clock source for FlexCAN Protocol Engine.

[1/2]

uint8_t { ... } ::dataByte0

CAN Frame payload byte0.

dataByte0 [2/2]

uint8_t _flexcan_frame::dataByte0

CAN Frame payload byte0.

[1/2]

uint8_t { ... } ::dataByte1

CAN Frame payload byte1.

dataByte1 [2/2]

uint8_t _flexcan_frame::dataByte1

CAN Frame payload byte1.

dataByte2 [1/2]

uint8_t _flexcan_frame::dataByte2

CAN Frame payload byte2.

[2/2]

uint8_t { ... } ::dataByte2

CAN Frame payload byte2.

dataByte3 [1/2]

uint8_t _flexcan_frame::dataByte3

CAN Frame payload byte3.

[2/2]

uint8_t { ... } ::dataByte3

CAN Frame payload byte3.

dataByte4 [1/2]

uint8_t _flexcan_frame::dataByte4

CAN Frame payload byte4.

[2/2]

uint8_t { ... } ::dataByte4

CAN Frame payload byte4.

dataByte5 [1/2]

uint8_t _flexcan_frame::dataByte5

CAN Frame payload byte5.

[2/2]

uint8_t { ... } ::dataByte5

CAN Frame payload byte5.

dataByte6 [1/2]

uint8_t _flexcan_frame::dataByte6

CAN Frame payload byte6.

[2/2]

uint8_t { ... } ::dataByte6

CAN Frame payload byte6.

dataByte7 [1/2]

uint8_t _flexcan_frame::dataByte7

CAN Frame payload byte7.

[2/2]

uint8_t { ... } ::dataByte7

CAN Frame payload byte7.

[1/2]

uint32_t { ... } ::dataWord0

CAN Frame payload word0.

dataWord0 [2/2]

uint32_t _flexcan_frame::dataWord0

CAN Frame payload word0.

[1/2]

uint32_t { ... } ::dataWord1

CAN Frame payload word1.

dataWord1 [2/2]

uint32_t _flexcan_frame::dataWord1

CAN Frame payload word1.

disableSelfReception

bool _flexcan_config::disableSelfReception

Enable or Disable Self Reflection.

enableIndividMask

bool _flexcan_config::enableIndividMask

Enable or Disable Rx Individual Mask and Queue feature.

enableListenOnlyMode

bool _flexcan_config::enableListenOnlyMode

Enable or Disable Listen Only Mode.

enableLoopBack

bool _flexcan_config::enableLoopBack

Enable or Disable Loop Back Self Test Mode.

enableSelfWakeup

bool _flexcan_config::enableSelfWakeup

Enable or Disable Self Wakeup Mode.

enableSupervisorMode

bool _flexcan_config::enableSupervisorMode

Enable or Disable Supervisor Mode, enable this mode will make registers allow only Supervisor access.

enableTimerSync

bool _flexcan_config::enableTimerSync

Enable or Disable Timer Synchronization.

[1/3]

uint32_t { ... } ::format

CAN Frame Identifier(STD or EXT format).

format [2/3]

uint32_t _flexcan_frame::format

CAN Frame Identifier(STD or EXT format).

format [3/3]

flexcan_frame_format_t _flexcan_rx_mb_config::format

CAN Frame Identifier format(Standard of Extend).

frame [1/2]

flexcan_frame_t* _flexcan_mb_transfer::frame

The buffer of CAN Message to be transfer.

frame [2/2]

flexcan_frame_t* _flexcan_fifo_transfer::frame

The buffer of CAN Message to be received from Legacy Rx FIFO.

frameNum

size_t _flexcan_fifo_transfer::frameNum

Number of CAN Message need to be received from Legacy or Ehanced Rx FIFO.

[1/3]

uint32_t { ... } ::id

CAN Frame Identifier, should be set using FLEXCAN_ID_EXT() or FLEXCAN_ID_STD() macro.

id [2/3]

uint32_t _flexcan_frame::id

CAN Frame Identifier, should be set using FLEXCAN_ID_EXT() or FLEXCAN_ID_STD() macro.

id [3/3]

uint32_t _flexcan_rx_mb_config::id

CAN Message Buffer Frame Identifier, should be set using FLEXCAN_ID_EXT() or FLEXCAN_ID_STD() macro.

idFilterNum

uint8_t _flexcan_rx_fifo_config::idFilterNum

The FlexCAN Legacy Rx FIFO Filter elements quantity.

idFilterTable

uint32_t* _flexcan_rx_fifo_config::idFilterTable

Pointer to the FlexCAN Legacy Rx FIFO identifier filter table.

idFilterType

flexcan_rx_fifo_filter_type_t _flexcan_rx_fifo_config::idFilterType

The FlexCAN Legacy Rx FIFO Filter type.

[1/2]

uint32_t { ... } ::idhit

CAN Rx FIFO filter hit id(This value is only used in Rx FIFO receive mode).

idhit [2/2]

uint32_t _flexcan_frame::idhit

CAN Rx FIFO filter hit id(This value is only used in Rx FIFO receive mode).

[1/2]

uint32_t { ... } ::length

CAN frame data length in bytes (Range: 0~8).

length [2/2]

uint32_t _flexcan_frame::length

CAN frame data length in bytes (Range: 0~8).

maxMbNum

uint8_t _flexcan_config::maxMbNum

The maximum number of Message Buffers used by user.

mbFrameBuf

flexcan_frame_t* volatile _flexcan_handle::mbFrameBuf[CAN_WORD1_COUNT]

The buffer for received CAN data from Message Buffers.

mbIdx

uint8_t _flexcan_mb_transfer::mbIdx

The index of Message buffer used to transfer Message.

mbState

volatile uint8_t _flexcan_handle::mbState[CAN_WORD1_COUNT]

Message Buffer transfer state.

phaseSeg1

uint8_t _flexcan_timing_config::phaseSeg1

Classic CAN or CAN FD nominal phase Segment 1.

phaseSeg2

uint8_t _flexcan_timing_config::phaseSeg2

Classic CAN or CAN FD nominal phase Segment 2.

preDivider

uint16_t _flexcan_timing_config::preDivider

Classic CAN or CAN FD nominal phase bit rate prescaler.

priority

flexcan_rx_fifo_priority_t _flexcan_rx_fifo_config::priority

The FlexCAN Legacy Rx FIFO receive priority.

propSeg

uint8_t _flexcan_timing_config::propSeg

Classic CAN or CAN FD nominal phase Propagation Segment.

rJumpwidth

uint8_t _flexcan_timing_config::rJumpwidth

Classic CAN or CAN FD nominal phase Re-sync Jump Width.

rxFifoFrameBuf

flexcan_frame_t* volatile _flexcan_handle::rxFifoFrameBuf

The buffer for received CAN data from Legacy Rx FIFO.

rxFifoFrameNum

size_t _flexcan_handle::rxFifoFrameNum

The number of CAN messages remaining to be received from Legacy or Ehanced Rx FIFO.

rxFifoState

volatile uint8_t _flexcan_handle::rxFifoState

Rx FIFO transfer state.

rxFifoTransferTotalNum

size_t _flexcan_handle::rxFifoTransferTotalNum

Total CAN Message number need to be received from Legacy or Ehanced Rx FIFO.

timestamp [1/3]

uint32_t _flexcan_frame::timestamp

FlexCAN internal Free-Running Counter Time Stamp.

[2/3]

uint32_t { ... } ::timestamp

FlexCAN internal Free-Running Counter Time Stamp.

timestamp [3/3]

volatile uint32_t _flexcan_handle::timestamp[CAN_WORD1_COUNT]

Mailbox transfer timestamp.

[1/3]

uint32_t { ... } ::type

CAN Frame Type(DATA or REMOTE).

type [2/3]

uint32_t _flexcan_frame::type

CAN Frame Type(DATA or REMOTE).

type [3/3]

flexcan_frame_type_t _flexcan_rx_mb_config::type

CAN Frame Type(Data or Remote).

userData

void* _flexcan_handle::userData

FlexCAN callback function parameter.

wakeupSrc

flexcan_wake_up_source_t _flexcan_config::wakeupSrc

Wake up source selection.