I2C Driver

Overview

Files
file	fsl_i2c.h

Macros
#define	I2C_RETRY_TIMES   0U /* Define to zero means keep waiting until the flag is assert/deassert. */
	Retry times for waiting flag. More...
#define	I2C_MASTER_TRANSMIT_IGNORE_LAST_NACK   1U /* Define to one means master ignores the last byte's nack and considers the transfer successful. */
	Whether to ignore the nack signal of the last byte during master transmit. More...
#define	I2C_STAT_MSTCODE_IDLE   (0U)
	Master Idle State Code.
#define	I2C_STAT_MSTCODE_RXREADY   (1U)
	Master Receive Ready State Code.
#define	I2C_STAT_MSTCODE_TXREADY   (2U)
	Master Transmit Ready State Code.
#define	I2C_STAT_MSTCODE_NACKADR   (3U)
	Master NACK by slave on address State Code.
#define	I2C_STAT_MSTCODE_NACKDAT   (4U)
	Master NACK by slave on data State Code.

Enumerations
enum	{   kStatus_I2C_Busy = MAKE_STATUS(kStatusGroup_FLEXCOMM_I2C, 0),   kStatus_I2C_Idle = MAKE_STATUS(kStatusGroup_FLEXCOMM_I2C, 1),   kStatus_I2C_Nak,   kStatus_I2C_InvalidParameter,   kStatus_I2C_BitError = MAKE_STATUS(kStatusGroup_FLEXCOMM_I2C, 4),   kStatus_I2C_ArbitrationLost = MAKE_STATUS(kStatusGroup_FLEXCOMM_I2C, 5),   kStatus_I2C_NoTransferInProgress,   kStatus_I2C_DmaRequestFail = MAKE_STATUS(kStatusGroup_FLEXCOMM_I2C, 7),   kStatus_I2C_StartStopError = MAKE_STATUS(kStatusGroup_FLEXCOMM_I2C, 8),   kStatus_I2C_UnexpectedState = MAKE_STATUS(kStatusGroup_FLEXCOMM_I2C, 9),   kStatus_I2C_Timeout,   kStatus_I2C_Addr_Nak = MAKE_STATUS(kStatusGroup_FLEXCOMM_I2C, 11),   kStatus_I2C_EventTimeout = MAKE_STATUS(kStatusGroup_FLEXCOMM_I2C, 12),   kStatus_I2C_SclLowTimeout = MAKE_STATUS(kStatusGroup_FLEXCOMM_I2C, 13) }
	I2C status return codes. More...
enum	_i2c_status_flags {   kI2C_MasterPendingFlag = I2C_STAT_MSTPENDING_MASK,   kI2C_MasterArbitrationLostFlag,   kI2C_MasterStartStopErrorFlag,   kI2C_MasterIdleFlag = 1UL << 5U,   kI2C_MasterRxReadyFlag = 1UL << I2C_STAT_MSTSTATE_SHIFT,   kI2C_MasterTxReadyFlag = 1UL << (I2C_STAT_MSTSTATE_SHIFT + 1U),   kI2C_MasterAddrNackFlag = 1UL << 7U,   kI2C_MasterDataNackFlag = 1UL << (I2C_STAT_MSTSTATE_SHIFT + 2U),   kI2C_SlavePendingFlag = I2C_STAT_SLVPENDING_MASK,   kI2C_SlaveNotStretching = I2C_STAT_SLVNOTSTR_MASK,   kI2C_SlaveSelected,   kI2C_SaveDeselected = I2C_STAT_SLVDESEL_MASK,   kI2C_SlaveAddressedFlag = 1UL << 22U,   kI2C_SlaveReceiveFlag = 1UL << I2C_STAT_SLVSTATE_SHIFT,   kI2C_SlaveTransmitFlag = 1UL << (I2C_STAT_SLVSTATE_SHIFT + 1U),   kI2C_SlaveAddress0MatchFlag = 1UL << 20U,   kI2C_SlaveAddress1MatchFlag = 1UL << I2C_STAT_SLVIDX_SHIFT,   kI2C_SlaveAddress2MatchFlag = 1UL << (I2C_STAT_SLVIDX_SHIFT + 1U),   kI2C_SlaveAddress3MatchFlag = 1UL << 21U,   kI2C_MonitorReadyFlag = I2C_STAT_MONRDY_MASK,   kI2C_MonitorOverflowFlag = I2C_STAT_MONOV_MASK,   kI2C_MonitorActiveFlag = I2C_STAT_MONACTIVE_MASK,   kI2C_MonitorIdleFlag = I2C_STAT_MONIDLE_MASK,   kI2C_EventTimeoutFlag = I2C_STAT_EVENTTIMEOUT_MASK,   kI2C_SclTimeoutFlag = I2C_STAT_SCLTIMEOUT_MASK }
	I2C status flags. More...
enum	_i2c_interrupt_enable {   kI2C_MasterPendingInterruptEnable,   kI2C_MasterArbitrationLostInterruptEnable,   kI2C_MasterStartStopErrorInterruptEnable,   kI2C_SlavePendingInterruptEnable = I2C_STAT_SLVPENDING_MASK,   kI2C_SlaveNotStretchingInterruptEnable,   kI2C_SlaveDeselectedInterruptEnable = I2C_STAT_SLVDESEL_MASK,   kI2C_MonitorReadyInterruptEnable = I2C_STAT_MONRDY_MASK,   kI2C_MonitorOverflowInterruptEnable = I2C_STAT_MONOV_MASK,   kI2C_MonitorIdleInterruptEnable = I2C_STAT_MONIDLE_MASK,   kI2C_EventTimeoutInterruptEnable = I2C_STAT_EVENTTIMEOUT_MASK,   kI2C_SclTimeoutInterruptEnable = I2C_STAT_SCLTIMEOUT_MASK }
	I2C interrupt enable. More...

Driver version
#define	FSL_I2C_DRIVER_VERSION   (MAKE_VERSION(2, 3, 3))
	I2C driver version. More...

Macro Definition Documentation

#define FSL_I2C_DRIVER_VERSION   (MAKE_VERSION(2, 3, 3))

#define I2C_RETRY_TIMES   0U /* Define to zero means keep waiting until the flag is assert/deassert. */

#define I2C_MASTER_TRANSMIT_IGNORE_LAST_NACK   1U /* Define to one means master ignores the last byte's nack and considers the transfer successful. */

Enumeration Type Documentation

anonymous enum

Enumerator
kStatus_I2C_Busy	The master is already performing a transfer.
kStatus_I2C_Idle	The slave driver is idle.
kStatus_I2C_Nak	The slave device sent a NAK in response to a byte.
kStatus_I2C_InvalidParameter	Unable to proceed due to invalid parameter.
kStatus_I2C_BitError	Transferred bit was not seen on the bus.
kStatus_I2C_ArbitrationLost	Arbitration lost error.
kStatus_I2C_NoTransferInProgress	Attempt to abort a transfer when one is not in progress.
kStatus_I2C_DmaRequestFail	DMA request failed.
kStatus_I2C_StartStopError	Start and stop error.
kStatus_I2C_UnexpectedState	Unexpected state.
kStatus_I2C_Timeout	Timeout when waiting for I2C master/slave pending status to set to continue transfer.
kStatus_I2C_Addr_Nak	NAK received for Address.
kStatus_I2C_EventTimeout	Timeout waiting for bus event.
kStatus_I2C_SclLowTimeout	Timeout SCL signal remains low.

enum _i2c_status_flags

Note

These enums are meant to be OR'd together to form a bit mask.

Enumerator
kI2C_MasterPendingFlag	The I2C module is waiting for software interaction. bit 0
kI2C_MasterArbitrationLostFlag	The arbitration of the bus was lost. There was collision on the bus. bit 4
kI2C_MasterStartStopErrorFlag	There was an error during start or stop phase of the transaction. bit 6
kI2C_MasterIdleFlag	The I2C master idle status. bit 5
kI2C_MasterRxReadyFlag	The I2C master rx ready status. bit 1
kI2C_MasterTxReadyFlag	The I2C master tx ready status. bit 2
kI2C_MasterAddrNackFlag	The I2C master address nack status. bit 7
kI2C_MasterDataNackFlag	The I2C master data nack status. bit 3
kI2C_SlavePendingFlag	The I2C module is waiting for software interaction. bit 8
kI2C_SlaveNotStretching	Indicates whether the slave is currently stretching clock (0 = yes, 1 = no). bit 11
kI2C_SlaveSelected	Indicates whether the slave is selected by an address match. bit 14
kI2C_SaveDeselected	Indicates that slave was previously deselected (deselect event took place, w1c). bit 15
kI2C_SlaveAddressedFlag	One of the I2C slave's 4 addresses is matched. bit 22
kI2C_SlaveReceiveFlag	Slave receive data available. bit 9
kI2C_SlaveTransmitFlag	Slave data can be transmitted. bit 10
kI2C_SlaveAddress0MatchFlag	Slave address0 match. bit 20
kI2C_SlaveAddress1MatchFlag	Slave address1 match. bit 12
kI2C_SlaveAddress2MatchFlag	Slave address2 match. bit 13
kI2C_SlaveAddress3MatchFlag	Slave address3 match. bit 21
kI2C_MonitorReadyFlag	The I2C monitor ready interrupt. bit 16
kI2C_MonitorOverflowFlag	The monitor data overrun interrupt. bit 17
kI2C_MonitorActiveFlag	The monitor is active. bit 18
kI2C_MonitorIdleFlag	The monitor idle interrupt. bit 19
kI2C_EventTimeoutFlag	The bus event timeout interrupt. bit 24
kI2C_SclTimeoutFlag	The SCL timeout interrupt. bit 25

enum _i2c_interrupt_enable

Note

These enums are meant to be OR'd together to form a bit mask.

Enumerator
kI2C_MasterPendingInterruptEnable	The I2C master communication pending interrupt.
kI2C_MasterArbitrationLostInterruptEnable	The I2C master arbitration lost interrupt.
kI2C_MasterStartStopErrorInterruptEnable	The I2C master start/stop timing error interrupt.
kI2C_SlavePendingInterruptEnable	The I2C slave communication pending interrupt.
kI2C_SlaveNotStretchingInterruptEnable	The I2C slave not streching interrupt, deep-sleep mode can be entered only when this interrupt occurs.
kI2C_SlaveDeselectedInterruptEnable	The I2C slave deselection interrupt.
kI2C_MonitorReadyInterruptEnable	The I2C monitor ready interrupt.
kI2C_MonitorOverflowInterruptEnable	The monitor data overrun interrupt.
kI2C_MonitorIdleInterruptEnable	The monitor idle interrupt.
kI2C_EventTimeoutInterruptEnable	The bus event timeout interrupt.
kI2C_SclTimeoutInterruptEnable	The SCL timeout interrupt.