I2C Private Functions

Functions
static void	I2C_DMAMasterTransmitCplt (DMA_HandleTypeDef *hdma)
	DMA I2C master transmit process complete callback.
static void	I2C_DMAMasterReceiveCplt (DMA_HandleTypeDef *hdma)
	DMA I2C master receive process complete callback.
static void	I2C_DMASlaveTransmitCplt (DMA_HandleTypeDef *hdma)
	DMA I2C slave transmit process complete callback.
static void	I2C_DMASlaveReceiveCplt (DMA_HandleTypeDef *hdma)
	DMA I2C slave receive process complete callback.
static void	I2C_DMAError (DMA_HandleTypeDef *hdma)
	DMA I2C communication error callback.
static void	I2C_DMAAbort (DMA_HandleTypeDef *hdma)
	DMA I2C communication abort callback (To be called at end of DMA Abort procedure).
static void	I2C_ITAddrCplt (I2C_HandleTypeDef *hi2c, uint32_t ITFlags)
	I2C Address complete process callback.
static void	I2C_ITMasterSeqCplt (I2C_HandleTypeDef *hi2c)
	I2C Master sequential complete process.
static void	I2C_ITSlaveSeqCplt (I2C_HandleTypeDef *hi2c)
	I2C Slave sequential complete process.
static void	I2C_ITMasterCplt (I2C_HandleTypeDef *hi2c, uint32_t ITFlags)
	I2C Master complete process.
static void	I2C_ITSlaveCplt (I2C_HandleTypeDef *hi2c, uint32_t ITFlags)
	I2C Slave complete process.
static void	I2C_ITListenCplt (I2C_HandleTypeDef *hi2c, uint32_t ITFlags)
	I2C Listen complete process.
static void	I2C_ITError (I2C_HandleTypeDef *hi2c, uint32_t ErrorCode)
	I2C interrupts error process.
static HAL_StatusTypeDef	I2C_RequestMemoryWrite (I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint32_t Timeout, uint32_t Tickstart)
	Master sends target device address followed by internal memory address for write request.
static HAL_StatusTypeDef	I2C_RequestMemoryRead (I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint32_t Timeout, uint32_t Tickstart)
	Master sends target device address followed by internal memory address for read request.
static HAL_StatusTypeDef	I2C_Master_ISR_IT (struct __I2C_HandleTypeDef *hi2c, uint32_t ITFlags, uint32_t ITSources)
	Interrupt Sub-Routine which handle the Interrupt Flags Master Mode with Interrupt.
static HAL_StatusTypeDef	I2C_Slave_ISR_IT (struct __I2C_HandleTypeDef *hi2c, uint32_t ITFlags, uint32_t ITSources)
	Interrupt Sub-Routine which handle the Interrupt Flags Slave Mode with Interrupt.
static HAL_StatusTypeDef	I2C_Master_ISR_DMA (struct __I2C_HandleTypeDef *hi2c, uint32_t ITFlags, uint32_t ITSources)
	Interrupt Sub-Routine which handle the Interrupt Flags Master Mode with DMA.
static HAL_StatusTypeDef	I2C_Slave_ISR_DMA (struct __I2C_HandleTypeDef *hi2c, uint32_t ITFlags, uint32_t ITSources)
	Interrupt Sub-Routine which handle the Interrupt Flags Slave Mode with DMA.
static HAL_StatusTypeDef	I2C_WaitOnFlagUntilTimeout (I2C_HandleTypeDef *hi2c, uint32_t Flag, FlagStatus Status, uint32_t Timeout, uint32_t Tickstart)
	This function handles I2C Communication Timeout.
static HAL_StatusTypeDef	I2C_WaitOnTXISFlagUntilTimeout (I2C_HandleTypeDef *hi2c, uint32_t Timeout, uint32_t Tickstart)
	This function handles I2C Communication Timeout for specific usage of TXIS flag.
static HAL_StatusTypeDef	I2C_WaitOnRXNEFlagUntilTimeout (I2C_HandleTypeDef *hi2c, uint32_t Timeout, uint32_t Tickstart)
	This function handles I2C Communication Timeout for specific usage of RXNE flag.
static HAL_StatusTypeDef	I2C_WaitOnSTOPFlagUntilTimeout (I2C_HandleTypeDef *hi2c, uint32_t Timeout, uint32_t Tickstart)
	This function handles I2C Communication Timeout for specific usage of STOP flag.
static HAL_StatusTypeDef	I2C_IsErrorOccurred (I2C_HandleTypeDef *hi2c, uint32_t Timeout, uint32_t Tickstart)
	This function handles errors detection during an I2C Communication.
static void	I2C_Enable_IRQ (I2C_HandleTypeDef *hi2c, uint16_t InterruptRequest)
	Manage the enabling of Interrupts.
static void	I2C_Disable_IRQ (I2C_HandleTypeDef *hi2c, uint16_t InterruptRequest)
	Manage the disabling of Interrupts.
static void	I2C_TreatErrorCallback (I2C_HandleTypeDef *hi2c)
	I2C Error callback treatment.
static void	I2C_Flush_TXDR (I2C_HandleTypeDef *hi2c)
	I2C Tx data register flush process.
static void	I2C_TransferConfig (I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t Size, uint32_t Mode, uint32_t Request)
	Handles I2Cx communication when starting transfer or during transfer (TC or TCR flag are set).
static void	I2C_ConvertOtherXferOptions (I2C_HandleTypeDef *hi2c)
	Convert I2Cx OTHER_xxx XferOptions to functional XferOptions.

---

Function Documentation

static void I2C_ConvertOtherXferOptions

(

I2C_HandleTypeDef *

hi2c

)

[static]

Convert I2Cx OTHER_xxx XferOptions to functional XferOptions.

Parameters:

hi2c	I2C handle.

Return values:

None

Definition at line 6871 of file stm32h7xx_hal_i2c.c.

References I2C_FIRST_AND_LAST_FRAME, I2C_FIRST_FRAME, I2C_OTHER_AND_LAST_FRAME, I2C_OTHER_FRAME, and __I2C_HandleTypeDef::XferOptions.

Referenced by HAL_I2C_Master_Seq_Receive_DMA(), HAL_I2C_Master_Seq_Receive_IT(), HAL_I2C_Master_Seq_Transmit_DMA(), and HAL_I2C_Master_Seq_Transmit_IT().

static void I2C_Disable_IRQ	(	I2C_HandleTypeDef *	hi2c,
		uint16_t	InterruptRequest
	)		[static]

Manage the disabling of Interrupts.

Parameters:

hi2c	Pointer to a I2C_HandleTypeDef structure that contains the configuration information for the specified I2C.
InterruptRequest	Value of I2C Interrupt configuration definition.

Return values:

None

Definition at line 6808 of file stm32h7xx_hal_i2c.c.

References __HAL_I2C_DISABLE_IT, HAL_I2C_STATE_LISTEN, I2C_IT_ADDRI, I2C_IT_ERRI, I2C_IT_NACKI, I2C_IT_RXI, I2C_IT_STOPI, I2C_IT_TCI, I2C_IT_TXI, I2C_XFER_CPLT_IT, I2C_XFER_ERROR_IT, I2C_XFER_LISTEN_IT, I2C_XFER_RELOAD_IT, I2C_XFER_RX_IT, I2C_XFER_TX_IT, and __I2C_HandleTypeDef::State.

Referenced by HAL_I2C_DisableListen_IT(), HAL_I2C_Master_Abort_IT(), HAL_I2C_Slave_Seq_Receive_DMA(), HAL_I2C_Slave_Seq_Receive_IT(), HAL_I2C_Slave_Seq_Transmit_DMA(), HAL_I2C_Slave_Seq_Transmit_IT(), I2C_ITAddrCplt(), I2C_ITError(), I2C_ITListenCplt(), I2C_ITMasterCplt(), I2C_ITMasterSeqCplt(), I2C_ITSlaveCplt(), and I2C_ITSlaveSeqCplt().

static void I2C_DMAAbort

(

DMA_HandleTypeDef *

hdma

)

[static]

DMA I2C communication abort callback (To be called at end of DMA Abort procedure).

Parameters:

hdma	DMA handle.

Return values:

None

Definition at line 6360 of file stm32h7xx_hal_i2c.c.

References __I2C_HandleTypeDef::hdmarx, __I2C_HandleTypeDef::hdmatx, I2C_TreatErrorCallback(), and __DMA_HandleTypeDef::XferAbortCallback.

Referenced by HAL_I2C_Slave_Seq_Receive_DMA(), HAL_I2C_Slave_Seq_Receive_IT(), HAL_I2C_Slave_Seq_Transmit_DMA(), HAL_I2C_Slave_Seq_Transmit_IT(), and I2C_ITError().

static void I2C_DMAError

(

DMA_HandleTypeDef *

hdma

)

[static]

DMA I2C communication error callback.

Parameters:

hdma	DMA handle

Return values:

None

Definition at line 6321 of file stm32h7xx_hal_i2c.c.

References HAL_DMA_ERROR_FE, HAL_DMA_GetError(), HAL_I2C_ERROR_DMA, __I2C_HandleTypeDef::hdmarx, __I2C_HandleTypeDef::hdmatx, I2C_GET_DMA_REMAIN_DATA, I2C_ITError(), and __I2C_HandleTypeDef::Instance.

Referenced by HAL_I2C_Master_Receive_DMA(), HAL_I2C_Master_Seq_Receive_DMA(), HAL_I2C_Master_Seq_Transmit_DMA(), HAL_I2C_Master_Transmit_DMA(), HAL_I2C_Mem_Read_DMA(), HAL_I2C_Mem_Write_DMA(), HAL_I2C_Slave_Receive_DMA(), HAL_I2C_Slave_Seq_Receive_DMA(), HAL_I2C_Slave_Seq_Transmit_DMA(), and HAL_I2C_Slave_Transmit_DMA().

static void I2C_DMAMasterReceiveCplt

(

DMA_HandleTypeDef *

hdma

)

[static]

DMA I2C master receive process complete callback.

Parameters:

hdma	DMA handle

Return values:

None

Definition at line 6243 of file stm32h7xx_hal_i2c.c.

References HAL_DMA_Start_IT(), HAL_I2C_ERROR_DMA, __I2C_HandleTypeDef::hdmarx, I2C_Enable_IRQ(), I2C_ITError(), I2C_XFER_CPLT_IT, I2C_XFER_RELOAD_IT, __I2C_HandleTypeDef::Instance, MAX_NBYTE_SIZE, __I2C_HandleTypeDef::pBuffPtr, __I2C_HandleTypeDef::XferCount, and __I2C_HandleTypeDef::XferSize.

Referenced by HAL_I2C_Master_Receive_DMA(), HAL_I2C_Master_Seq_Receive_DMA(), and HAL_I2C_Mem_Read_DMA().

static void I2C_DMAMasterTransmitCplt

(

DMA_HandleTypeDef *

hdma

)

[static]

DMA I2C master transmit process complete callback.

Parameters:

hdma	DMA handle

Return values:

None

Definition at line 6165 of file stm32h7xx_hal_i2c.c.

References HAL_DMA_Start_IT(), HAL_I2C_ERROR_DMA, __I2C_HandleTypeDef::hdmatx, I2C_Enable_IRQ(), I2C_ITError(), I2C_XFER_CPLT_IT, I2C_XFER_RELOAD_IT, __I2C_HandleTypeDef::Instance, MAX_NBYTE_SIZE, __I2C_HandleTypeDef::pBuffPtr, __I2C_HandleTypeDef::XferCount, and __I2C_HandleTypeDef::XferSize.

Referenced by HAL_I2C_Master_Seq_Transmit_DMA(), HAL_I2C_Master_Transmit_DMA(), and HAL_I2C_Mem_Write_DMA().

static void I2C_DMASlaveReceiveCplt

(

DMA_HandleTypeDef *

hdma

)

[static]

DMA I2C slave receive process complete callback.

Parameters:

hdma	DMA handle

Return values:

None

Definition at line 6293 of file stm32h7xx_hal_i2c.c.

References __I2C_HandleTypeDef::hdmarx, I2C_GET_DMA_REMAIN_DATA, I2C_ITSlaveSeqCplt(), I2C_NO_OPTION_FRAME, __I2C_HandleTypeDef::Instance, and __I2C_HandleTypeDef::XferOptions.

Referenced by HAL_I2C_Slave_Receive_DMA(), and HAL_I2C_Slave_Seq_Receive_DMA().

static void I2C_DMASlaveTransmitCplt

(

DMA_HandleTypeDef *

hdma

)

[static]

DMA I2C slave transmit process complete callback.

Parameters:

hdma	DMA handle

Return values:

None

Definition at line 6215 of file stm32h7xx_hal_i2c.c.

References I2C_FIRST_FRAME, I2C_ITSlaveSeqCplt(), I2C_NEXT_FRAME, __I2C_HandleTypeDef::Instance, and __I2C_HandleTypeDef::XferOptions.

Referenced by HAL_I2C_Slave_Seq_Transmit_DMA(), and HAL_I2C_Slave_Transmit_DMA().

static void I2C_Enable_IRQ	(	I2C_HandleTypeDef *	hi2c,
		uint16_t	InterruptRequest
	)		[static]

Manage the enabling of Interrupts.

Parameters:

hi2c	Pointer to a I2C_HandleTypeDef structure that contains the configuration information for the specified I2C.
InterruptRequest	Value of I2C Interrupt configuration definition.

Return values:

None

Definition at line 6737 of file stm32h7xx_hal_i2c.c.

References __HAL_I2C_ENABLE_IT, I2C_IT_ADDRI, I2C_IT_ERRI, I2C_IT_NACKI, I2C_IT_RXI, I2C_IT_STOPI, I2C_IT_TCI, I2C_IT_TXI, I2C_Master_ISR_DMA(), I2C_Slave_ISR_DMA(), I2C_XFER_CPLT_IT, I2C_XFER_ERROR_IT, I2C_XFER_LISTEN_IT, I2C_XFER_RELOAD_IT, I2C_XFER_RX_IT, I2C_XFER_TX_IT, and __I2C_HandleTypeDef::XferISR.

Referenced by HAL_I2C_EnableListen_IT(), HAL_I2C_Master_Abort_IT(), HAL_I2C_Master_Receive_DMA(), HAL_I2C_Master_Receive_IT(), HAL_I2C_Master_Seq_Receive_DMA(), HAL_I2C_Master_Seq_Receive_IT(), HAL_I2C_Master_Seq_Transmit_DMA(), HAL_I2C_Master_Seq_Transmit_IT(), HAL_I2C_Master_Transmit_DMA(), HAL_I2C_Master_Transmit_IT(), HAL_I2C_Mem_Read_DMA(), HAL_I2C_Mem_Read_IT(), HAL_I2C_Mem_Write_DMA(), HAL_I2C_Mem_Write_IT(), HAL_I2C_Slave_Receive_DMA(), HAL_I2C_Slave_Receive_IT(), HAL_I2C_Slave_Seq_Receive_DMA(), HAL_I2C_Slave_Seq_Receive_IT(), HAL_I2C_Slave_Seq_Transmit_DMA(), HAL_I2C_Slave_Seq_Transmit_IT(), HAL_I2C_Slave_Transmit_DMA(), HAL_I2C_Slave_Transmit_IT(), I2C_DMAMasterReceiveCplt(), I2C_DMAMasterTransmitCplt(), and I2C_Master_ISR_DMA().

static void I2C_Flush_TXDR

(

I2C_HandleTypeDef *

hi2c

)

[static]

I2C Tx data register flush process.

Parameters:

hi2c	I2C handle.

Return values:

None

Definition at line 6144 of file stm32h7xx_hal_i2c.c.

References __HAL_I2C_CLEAR_FLAG, __HAL_I2C_GET_FLAG, I2C_FLAG_TXE, I2C_FLAG_TXIS, and __I2C_HandleTypeDef::Instance.

Referenced by HAL_I2C_Slave_Transmit(), I2C_IsErrorOccurred(), I2C_ITMasterCplt(), I2C_ITSlaveCplt(), I2C_Master_ISR_DMA(), I2C_Master_ISR_IT(), I2C_Slave_ISR_DMA(), and I2C_Slave_ISR_IT().

static HAL_StatusTypeDef I2C_IsErrorOccurred	(	I2C_HandleTypeDef *	hi2c,
		uint32_t	Timeout,
		uint32_t	Tickstart
	)		[static]

This function handles errors detection during an I2C Communication.

Parameters:

hi2c	Pointer to a I2C_HandleTypeDef structure that contains the configuration information for the specified I2C.
Timeout	Timeout duration
Tickstart	Tick start value

Return values:

HAL

status

Definition at line 6566 of file stm32h7xx_hal_i2c.c.

References __HAL_I2C_CLEAR_FLAG, __HAL_I2C_GET_FLAG, __I2C_HandleTypeDef::ErrorCode, HAL_GetTick(), HAL_I2C_ERROR_AF, HAL_I2C_ERROR_ARLO, HAL_I2C_ERROR_BERR, HAL_I2C_ERROR_OVR, HAL_I2C_ERROR_TIMEOUT, HAL_I2C_MODE_NONE, HAL_I2C_MODE_SLAVE, HAL_I2C_STATE_READY, I2C_FLAG_AF, I2C_FLAG_ARLO, I2C_FLAG_BERR, I2C_FLAG_BUSY, I2C_FLAG_OVR, I2C_FLAG_STOPF, I2C_Flush_TXDR(), I2C_RESET_CR2, I2C_TIMEOUT_STOPF, __I2C_HandleTypeDef::Instance, __I2C_HandleTypeDef::Mode, and __I2C_HandleTypeDef::State.

Referenced by I2C_WaitOnRXNEFlagUntilTimeout(), I2C_WaitOnSTOPFlagUntilTimeout(), and I2C_WaitOnTXISFlagUntilTimeout().

static void I2C_ITAddrCplt	(	I2C_HandleTypeDef *	hi2c,
		uint32_t	ITFlags
	)		[static]

I2C Address complete process callback.

Parameters:

hi2c	I2C handle.
ITFlags	Interrupt flags to handle.

Return values:

None

Definition at line 5419 of file stm32h7xx_hal_i2c.c.

References __HAL_I2C_CLEAR_FLAG, __I2C_HandleTypeDef::AddrCallback, I2C_InitTypeDef::AddressingMode, __I2C_HandleTypeDef::AddrEventCount, HAL_I2C_AddrCallback(), HAL_I2C_STATE_LISTEN, I2C_ADDRESSINGMODE_10BIT, I2C_Disable_IRQ(), I2C_FLAG_ADDR, I2C_GET_ADDR_MATCH, I2C_GET_DIR, I2C_GET_OWN_ADDRESS1, I2C_GET_OWN_ADDRESS2, I2C_XFER_LISTEN_IT, __I2C_HandleTypeDef::Init, SLAVE_ADDR_MSK, SLAVE_ADDR_SHIFT, and __I2C_HandleTypeDef::State.

Referenced by I2C_Slave_ISR_DMA(), and I2C_Slave_ISR_IT().

static void I2C_ITError	(	I2C_HandleTypeDef *	hi2c,
		uint32_t	ErrorCode
	)		[static]

I2C interrupts error process.

Parameters:

hi2c	I2C handle.
ErrorCode	Error code to handle.

Return values:

None

Definition at line 5994 of file stm32h7xx_hal_i2c.c.

References __I2C_HandleTypeDef::ErrorCode, HAL_DMA_Abort_IT(), HAL_DMA_GetState(), HAL_DMA_STATE_READY, HAL_I2C_MODE_NONE, HAL_I2C_STATE_ABORT, HAL_I2C_STATE_BUSY_RX_LISTEN, HAL_I2C_STATE_BUSY_TX_LISTEN, HAL_I2C_STATE_LISTEN, HAL_I2C_STATE_READY, __I2C_HandleTypeDef::hdmarx, __I2C_HandleTypeDef::hdmatx, I2C_Disable_IRQ(), I2C_DMAAbort(), I2C_NO_OPTION_FRAME, I2C_Slave_ISR_IT(), I2C_STATE_MASTER_BUSY_RX, I2C_STATE_MASTER_BUSY_TX, I2C_STATE_SLAVE_BUSY_RX, I2C_STATE_SLAVE_BUSY_TX, I2C_TreatErrorCallback(), I2C_XFER_LISTEN_IT, I2C_XFER_RX_IT, I2C_XFER_TX_IT, __I2C_HandleTypeDef::Instance, __I2C_HandleTypeDef::Mode, __I2C_HandleTypeDef::PreviousState, __I2C_HandleTypeDef::State, __DMA_HandleTypeDef::XferAbortCallback, __I2C_HandleTypeDef::XferCount, __I2C_HandleTypeDef::XferISR, and __I2C_HandleTypeDef::XferOptions.

Referenced by HAL_I2C_ER_IRQHandler(), I2C_DMAError(), I2C_DMAMasterReceiveCplt(), I2C_DMAMasterTransmitCplt(), I2C_ITMasterCplt(), I2C_ITSlaveCplt(), I2C_Master_ISR_DMA(), I2C_Master_ISR_IT(), I2C_Slave_ISR_DMA(), and I2C_Slave_ISR_IT().

static void I2C_ITListenCplt	(	I2C_HandleTypeDef *	hi2c,
		uint32_t	ITFlags
	)		[static]

I2C Listen complete process.

Parameters:

hi2c	I2C handle.
ITFlags	Interrupt flags to handle.

Return values:

None

Definition at line 5943 of file stm32h7xx_hal_i2c.c.

References __HAL_I2C_CLEAR_FLAG, __I2C_HandleTypeDef::ErrorCode, HAL_I2C_ERROR_AF, HAL_I2C_ListenCpltCallback(), HAL_I2C_MODE_NONE, HAL_I2C_STATE_READY, I2C_CHECK_FLAG, I2C_Disable_IRQ(), I2C_FLAG_AF, I2C_FLAG_RXNE, I2C_NO_OPTION_FRAME, I2C_STATE_NONE, I2C_XFER_LISTEN_IT, I2C_XFER_RX_IT, I2C_XFER_TX_IT, __I2C_HandleTypeDef::Instance, __I2C_HandleTypeDef::ListenCpltCallback, __I2C_HandleTypeDef::Mode, __I2C_HandleTypeDef::pBuffPtr, __I2C_HandleTypeDef::PreviousState, __I2C_HandleTypeDef::State, __I2C_HandleTypeDef::XferCount, __I2C_HandleTypeDef::XferISR, __I2C_HandleTypeDef::XferOptions, and __I2C_HandleTypeDef::XferSize.

Referenced by I2C_ITSlaveCplt(), I2C_Slave_ISR_DMA(), and I2C_Slave_ISR_IT().

static void I2C_ITMasterCplt	(	I2C_HandleTypeDef *	hi2c,
		uint32_t	ITFlags
	)		[static]

I2C Master complete process.

Parameters:

hi2c	I2C handle.
ITFlags	Interrupt flags to handle.

Return values:

None

Definition at line 5641 of file stm32h7xx_hal_i2c.c.

References __HAL_I2C_CLEAR_FLAG, __I2C_HandleTypeDef::ErrorCode, HAL_I2C_ERROR_AF, HAL_I2C_ERROR_NONE, HAL_I2C_MasterRxCpltCallback(), HAL_I2C_MasterTxCpltCallback(), HAL_I2C_MemRxCpltCallback(), HAL_I2C_MemTxCpltCallback(), HAL_I2C_MODE_MEM, HAL_I2C_MODE_NONE, HAL_I2C_STATE_ABORT, HAL_I2C_STATE_BUSY_RX, HAL_I2C_STATE_BUSY_TX, HAL_I2C_STATE_READY, I2C_CHECK_FLAG, I2C_Disable_IRQ(), I2C_FLAG_AF, I2C_FLAG_RXNE, I2C_FLAG_STOPF, I2C_Flush_TXDR(), I2C_ITError(), I2C_NO_OPTION_FRAME, I2C_RESET_CR2, I2C_STATE_MASTER_BUSY_RX, I2C_STATE_MASTER_BUSY_TX, I2C_STATE_NONE, I2C_XFER_RX_IT, I2C_XFER_TX_IT, __I2C_HandleTypeDef::Instance, __I2C_HandleTypeDef::MasterRxCpltCallback, __I2C_HandleTypeDef::MasterTxCpltCallback, __I2C_HandleTypeDef::MemRxCpltCallback, __I2C_HandleTypeDef::MemTxCpltCallback, __I2C_HandleTypeDef::Mode, __I2C_HandleTypeDef::PreviousState, __I2C_HandleTypeDef::State, __I2C_HandleTypeDef::XferISR, and __I2C_HandleTypeDef::XferOptions.

Referenced by I2C_Master_ISR_DMA(), and I2C_Master_ISR_IT().

static void I2C_ITMasterSeqCplt

(

I2C_HandleTypeDef *

hi2c

)

[static]

I2C Master sequential complete process.

Parameters:

hi2c	I2C handle.

Return values:

None

Definition at line 5514 of file stm32h7xx_hal_i2c.c.

References HAL_I2C_MasterRxCpltCallback(), HAL_I2C_MasterTxCpltCallback(), HAL_I2C_MODE_NONE, HAL_I2C_STATE_BUSY_TX, HAL_I2C_STATE_READY, I2C_Disable_IRQ(), I2C_STATE_MASTER_BUSY_RX, I2C_STATE_MASTER_BUSY_TX, I2C_XFER_RX_IT, I2C_XFER_TX_IT, __I2C_HandleTypeDef::MasterRxCpltCallback, __I2C_HandleTypeDef::MasterTxCpltCallback, __I2C_HandleTypeDef::Mode, __I2C_HandleTypeDef::PreviousState, __I2C_HandleTypeDef::State, and __I2C_HandleTypeDef::XferISR.

Referenced by I2C_Master_ISR_DMA(), and I2C_Master_ISR_IT().

static void I2C_ITSlaveCplt	(	I2C_HandleTypeDef *	hi2c,
		uint32_t	ITFlags
	)		[static]

I2C Slave complete process.

Parameters:

hi2c	I2C handle.
ITFlags	Interrupt flags to handle.

Return values:

None

Definition at line 5784 of file stm32h7xx_hal_i2c.c.

References __HAL_I2C_CLEAR_FLAG, __I2C_HandleTypeDef::ErrorCode, HAL_I2C_ERROR_AF, HAL_I2C_ERROR_NONE, HAL_I2C_ListenCpltCallback(), HAL_I2C_MODE_NONE, HAL_I2C_SlaveRxCpltCallback(), HAL_I2C_SlaveTxCpltCallback(), HAL_I2C_STATE_BUSY_RX, HAL_I2C_STATE_BUSY_RX_LISTEN, HAL_I2C_STATE_BUSY_TX, HAL_I2C_STATE_BUSY_TX_LISTEN, HAL_I2C_STATE_LISTEN, HAL_I2C_STATE_READY, __I2C_HandleTypeDef::hdmarx, __I2C_HandleTypeDef::hdmatx, I2C_CHECK_FLAG, I2C_CHECK_IT_SOURCE, I2C_Disable_IRQ(), I2C_FLAG_RXNE, I2C_FLAG_STOPF, I2C_Flush_TXDR(), I2C_GET_DMA_REMAIN_DATA, I2C_ITError(), I2C_ITListenCplt(), I2C_ITSlaveSeqCplt(), I2C_NO_OPTION_FRAME, I2C_RESET_CR2, I2C_STATE_NONE, I2C_STATE_SLAVE_BUSY_RX, I2C_STATE_SLAVE_BUSY_TX, I2C_XFER_LISTEN_IT, I2C_XFER_RX_IT, I2C_XFER_TX_IT, __I2C_HandleTypeDef::Instance, __I2C_HandleTypeDef::ListenCpltCallback, __I2C_HandleTypeDef::Mode, __I2C_HandleTypeDef::pBuffPtr, __I2C_HandleTypeDef::PreviousState, __I2C_HandleTypeDef::SlaveRxCpltCallback, __I2C_HandleTypeDef::SlaveTxCpltCallback, __I2C_HandleTypeDef::State, __I2C_HandleTypeDef::XferCount, __I2C_HandleTypeDef::XferISR, __I2C_HandleTypeDef::XferOptions, and __I2C_HandleTypeDef::XferSize.

Referenced by I2C_Slave_ISR_DMA(), and I2C_Slave_ISR_IT().

static void I2C_ITSlaveSeqCplt

(

I2C_HandleTypeDef *

hi2c

)

[static]

I2C Slave sequential complete process.

Parameters:

hi2c	I2C handle.

Return values:

None

Definition at line 5567 of file stm32h7xx_hal_i2c.c.

References HAL_I2C_MODE_NONE, HAL_I2C_SlaveRxCpltCallback(), HAL_I2C_SlaveTxCpltCallback(), HAL_I2C_STATE_BUSY_RX_LISTEN, HAL_I2C_STATE_BUSY_TX_LISTEN, HAL_I2C_STATE_LISTEN, I2C_CHECK_IT_SOURCE, I2C_Disable_IRQ(), I2C_STATE_SLAVE_BUSY_RX, I2C_STATE_SLAVE_BUSY_TX, I2C_XFER_RX_IT, I2C_XFER_TX_IT, __I2C_HandleTypeDef::Instance, __I2C_HandleTypeDef::Mode, __I2C_HandleTypeDef::PreviousState, __I2C_HandleTypeDef::SlaveRxCpltCallback, __I2C_HandleTypeDef::SlaveTxCpltCallback, and __I2C_HandleTypeDef::State.

Referenced by I2C_DMASlaveReceiveCplt(), I2C_DMASlaveTransmitCplt(), I2C_ITSlaveCplt(), I2C_Slave_ISR_DMA(), and I2C_Slave_ISR_IT().

static HAL_StatusTypeDef I2C_Master_ISR_DMA	(	struct __I2C_HandleTypeDef *	hi2c,
		uint32_t	ITFlags,
		uint32_t	ITSources
	)		[static]

Interrupt Sub-Routine which handle the Interrupt Flags Master Mode with DMA.

Parameters:

hi2c	Pointer to a I2C_HandleTypeDef structure that contains the configuration information for the specified I2C.
ITFlags	Interrupt flags to handle.
ITSources	Interrupt sources enabled.

Return values:

HAL

status

Definition at line 5030 of file stm32h7xx_hal_i2c.c.

References __HAL_I2C_CLEAR_FLAG, __HAL_I2C_DISABLE_IT, __I2C_HandleTypeDef::ErrorCode, HAL_I2C_ERROR_AF, HAL_I2C_ERROR_SIZE, HAL_I2C_STATE_BUSY_RX, I2C_AUTOEND_MODE, I2C_CHECK_FLAG, I2C_CHECK_IT_SOURCE, I2C_Enable_IRQ(), I2C_FLAG_AF, I2C_FLAG_STOPF, I2C_FLAG_TC, I2C_FLAG_TCR, I2C_Flush_TXDR(), I2C_GET_STOP_MODE, I2C_IT_NACKI, I2C_IT_STOPI, I2C_IT_TCI, I2C_ITError(), I2C_ITMasterCplt(), I2C_ITMasterSeqCplt(), I2C_NO_OPTION_FRAME, I2C_NO_STARTSTOP, I2C_RELOAD_MODE, I2C_TransferConfig(), I2C_XFER_CPLT_IT, __I2C_HandleTypeDef::Instance, MAX_NBYTE_SIZE, __I2C_HandleTypeDef::State, __I2C_HandleTypeDef::XferCount, __I2C_HandleTypeDef::XferOptions, and __I2C_HandleTypeDef::XferSize.

Referenced by HAL_I2C_Master_Receive_DMA(), HAL_I2C_Master_Seq_Receive_DMA(), HAL_I2C_Master_Seq_Transmit_DMA(), HAL_I2C_Master_Transmit_DMA(), HAL_I2C_Mem_Read_DMA(), HAL_I2C_Mem_Write_DMA(), and I2C_Enable_IRQ().

static HAL_StatusTypeDef I2C_Master_ISR_IT	(	struct __I2C_HandleTypeDef *	hi2c,
		uint32_t	ITFlags,
		uint32_t	ITSources
	)		[static]

Interrupt Sub-Routine which handle the Interrupt Flags Master Mode with Interrupt.

Parameters:

hi2c	Pointer to a I2C_HandleTypeDef structure that contains the configuration information for the specified I2C.
ITFlags	Interrupt flags to handle.
ITSources	Interrupt sources enabled.

Return values:

HAL

status

Definition at line 4743 of file stm32h7xx_hal_i2c.c.

References __HAL_I2C_CLEAR_FLAG, __I2C_HandleTypeDef::ErrorCode, HAL_I2C_ERROR_AF, HAL_I2C_ERROR_SIZE, I2C_AUTOEND_MODE, I2C_CHECK_FLAG, I2C_CHECK_IT_SOURCE, I2C_FLAG_AF, I2C_FLAG_RXNE, I2C_FLAG_STOPF, I2C_FLAG_TC, I2C_FLAG_TCR, I2C_FLAG_TXIS, I2C_Flush_TXDR(), I2C_GET_STOP_MODE, I2C_IT_NACKI, I2C_IT_RXI, I2C_IT_STOPI, I2C_IT_TCI, I2C_IT_TXI, I2C_ITError(), I2C_ITMasterCplt(), I2C_ITMasterSeqCplt(), I2C_NO_OPTION_FRAME, I2C_NO_STARTSTOP, I2C_RELOAD_MODE, I2C_TransferConfig(), __I2C_HandleTypeDef::Instance, MAX_NBYTE_SIZE, __I2C_HandleTypeDef::pBuffPtr, __I2C_HandleTypeDef::XferCount, __I2C_HandleTypeDef::XferOptions, and __I2C_HandleTypeDef::XferSize.

Referenced by HAL_I2C_Master_Receive_DMA(), HAL_I2C_Master_Receive_IT(), HAL_I2C_Master_Seq_Receive_DMA(), HAL_I2C_Master_Seq_Receive_IT(), HAL_I2C_Master_Seq_Transmit_DMA(), HAL_I2C_Master_Seq_Transmit_IT(), HAL_I2C_Master_Transmit_DMA(), HAL_I2C_Master_Transmit_IT(), HAL_I2C_Mem_Read_IT(), and HAL_I2C_Mem_Write_IT().

static HAL_StatusTypeDef I2C_RequestMemoryRead	(	I2C_HandleTypeDef *	hi2c,
		uint16_t	DevAddress,
		uint16_t	MemAddress,
		uint16_t	MemAddSize,
		uint32_t	Timeout,
		uint32_t	Tickstart
	)		[static]

Master sends target device address followed by internal memory address for read request.

Parameters:

hi2c	Pointer to a I2C_HandleTypeDef structure that contains the configuration information for the specified I2C.
DevAddress	Target device address: The device 7 bits address value in datasheet must be shifted to the left before calling the interface
MemAddress	Internal memory address
MemAddSize	Size of internal memory address
Timeout	Timeout duration
Tickstart	Tick start value

Return values:

HAL

status

Definition at line 5370 of file stm32h7xx_hal_i2c.c.

References I2C_FLAG_TC, I2C_GENERATE_START_WRITE, I2C_MEM_ADD_LSB, I2C_MEM_ADD_MSB, I2C_MEMADD_SIZE_8BIT, I2C_SOFTEND_MODE, I2C_TransferConfig(), I2C_WaitOnFlagUntilTimeout(), I2C_WaitOnTXISFlagUntilTimeout(), and __I2C_HandleTypeDef::Instance.

Referenced by HAL_I2C_Mem_Read(), HAL_I2C_Mem_Read_DMA(), and HAL_I2C_Mem_Read_IT().

static HAL_StatusTypeDef I2C_RequestMemoryWrite	(	I2C_HandleTypeDef *	hi2c,
		uint16_t	DevAddress,
		uint16_t	MemAddress,
		uint16_t	MemAddSize,
		uint32_t	Timeout,
		uint32_t	Tickstart
	)		[static]

Master sends target device address followed by internal memory address for write request.

Parameters:

hi2c	Pointer to a I2C_HandleTypeDef structure that contains the configuration information for the specified I2C.
DevAddress	Target device address: The device 7 bits address value in datasheet must be shifted to the left before calling the interface
MemAddress	Internal memory address
MemAddSize	Size of internal memory address
Timeout	Timeout duration
Tickstart	Tick start value

Return values:

HAL

status

Definition at line 5315 of file stm32h7xx_hal_i2c.c.

References I2C_FLAG_TCR, I2C_GENERATE_START_WRITE, I2C_MEM_ADD_LSB, I2C_MEM_ADD_MSB, I2C_MEMADD_SIZE_8BIT, I2C_RELOAD_MODE, I2C_TransferConfig(), I2C_WaitOnFlagUntilTimeout(), I2C_WaitOnTXISFlagUntilTimeout(), and __I2C_HandleTypeDef::Instance.

Referenced by HAL_I2C_Mem_Write(), HAL_I2C_Mem_Write_DMA(), and HAL_I2C_Mem_Write_IT().

static HAL_StatusTypeDef I2C_Slave_ISR_DMA	(	struct __I2C_HandleTypeDef *	hi2c,
		uint32_t	ITFlags,
		uint32_t	ITSources
	)		[static]

Interrupt Sub-Routine which handle the Interrupt Flags Slave Mode with DMA.

Parameters:

hi2c	Pointer to a I2C_HandleTypeDef structure that contains the configuration information for the specified I2C.
ITFlags	Interrupt flags to handle.
ITSources	Interrupt sources enabled.

Return values:

HAL

status

Definition at line 5170 of file stm32h7xx_hal_i2c.c.

References __HAL_I2C_CLEAR_FLAG, __I2C_HandleTypeDef::ErrorCode, HAL_I2C_ERROR_AF, HAL_I2C_STATE_BUSY_RX, HAL_I2C_STATE_BUSY_RX_LISTEN, HAL_I2C_STATE_BUSY_TX, HAL_I2C_STATE_BUSY_TX_LISTEN, HAL_I2C_STATE_LISTEN, __I2C_HandleTypeDef::hdmarx, __I2C_HandleTypeDef::hdmatx, I2C_CHECK_FLAG, I2C_CHECK_IT_SOURCE, I2C_FIRST_AND_LAST_FRAME, I2C_FIRST_FRAME, I2C_FLAG_ADDR, I2C_FLAG_AF, I2C_FLAG_STOPF, I2C_Flush_TXDR(), I2C_GET_DMA_REMAIN_DATA, I2C_IT_ADDRI, I2C_IT_NACKI, I2C_IT_STOPI, I2C_ITAddrCplt(), I2C_ITError(), I2C_ITListenCplt(), I2C_ITSlaveCplt(), I2C_ITSlaveSeqCplt(), I2C_NEXT_FRAME, I2C_NO_OPTION_FRAME, I2C_STATE_SLAVE_BUSY_RX, I2C_STATE_SLAVE_BUSY_TX, __I2C_HandleTypeDef::PreviousState, __I2C_HandleTypeDef::State, and __I2C_HandleTypeDef::XferOptions.

Referenced by HAL_I2C_Slave_Receive_DMA(), HAL_I2C_Slave_Seq_Receive_DMA(), HAL_I2C_Slave_Seq_Transmit_DMA(), HAL_I2C_Slave_Transmit_DMA(), and I2C_Enable_IRQ().

static HAL_StatusTypeDef I2C_Slave_ISR_IT	(	struct __I2C_HandleTypeDef *	hi2c,
		uint32_t	ITFlags,
		uint32_t	ITSources
	)		[static]

Interrupt Sub-Routine which handle the Interrupt Flags Slave Mode with Interrupt.

Parameters:

hi2c	Pointer to a I2C_HandleTypeDef structure that contains the configuration information for the specified I2C.
ITFlags	Interrupt flags to handle.
ITSources	Interrupt sources enabled.

Return values:

HAL

status

Definition at line 4889 of file stm32h7xx_hal_i2c.c.

References __HAL_I2C_CLEAR_FLAG, __I2C_HandleTypeDef::ErrorCode, HAL_I2C_ERROR_AF, HAL_I2C_STATE_BUSY_TX_LISTEN, HAL_I2C_STATE_LISTEN, I2C_CHECK_FLAG, I2C_CHECK_IT_SOURCE, I2C_FIRST_AND_LAST_FRAME, I2C_FIRST_FRAME, I2C_FLAG_ADDR, I2C_FLAG_AF, I2C_FLAG_RXNE, I2C_FLAG_STOPF, I2C_FLAG_TXIS, I2C_Flush_TXDR(), I2C_IT_ADDRI, I2C_IT_NACKI, I2C_IT_RXI, I2C_IT_STOPI, I2C_IT_TXI, I2C_ITAddrCplt(), I2C_ITError(), I2C_ITListenCplt(), I2C_ITSlaveCplt(), I2C_ITSlaveSeqCplt(), I2C_NEXT_FRAME, I2C_NO_OPTION_FRAME, __I2C_HandleTypeDef::Instance, __I2C_HandleTypeDef::pBuffPtr, __I2C_HandleTypeDef::State, __I2C_HandleTypeDef::XferCount, __I2C_HandleTypeDef::XferOptions, and __I2C_HandleTypeDef::XferSize.

Referenced by HAL_I2C_EnableListen_IT(), HAL_I2C_Slave_Receive_IT(), HAL_I2C_Slave_Seq_Receive_IT(), HAL_I2C_Slave_Seq_Transmit_IT(), HAL_I2C_Slave_Transmit_IT(), and I2C_ITError().

static void I2C_TransferConfig	(	I2C_HandleTypeDef *	hi2c,
		uint16_t	DevAddress,
		uint8_t	Size,
		uint32_t	Mode,
		uint32_t	Request
	)		[static]

Handles I2Cx communication when starting transfer or during transfer (TC or TCR flag are set).

Parameters:

hi2c	I2C handle.
DevAddress	Specifies the slave address to be programmed.
Size	Specifies the number of bytes to be programmed. This parameter must be a value between 0 and 255.
Mode	New state of the I2C START condition generation. This parameter can be one of the following values: I2C_RELOAD_MODE Enable Reload mode . I2C_AUTOEND_MODE Enable Automatic end mode. I2C_SOFTEND_MODE Enable Software end mode.
Request	New state of the I2C START condition generation. This parameter can be one of the following values: I2C_NO_STARTSTOP Don't Generate stop and start condition. I2C_GENERATE_STOP Generate stop condition (Size should be set to 0). I2C_GENERATE_START_READ Generate Restart for read request. I2C_GENERATE_START_WRITE Generate Restart for write request.

Return values:

None

Definition at line 6710 of file stm32h7xx_hal_i2c.c.

References assert_param, __I2C_HandleTypeDef::Instance, IS_TRANSFER_MODE, and IS_TRANSFER_REQUEST.

Referenced by HAL_I2C_Master_Abort_IT(), HAL_I2C_Master_Receive(), HAL_I2C_Master_Receive_DMA(), HAL_I2C_Master_Receive_IT(), HAL_I2C_Master_Seq_Receive_DMA(), HAL_I2C_Master_Seq_Receive_IT(), HAL_I2C_Master_Seq_Transmit_DMA(), HAL_I2C_Master_Seq_Transmit_IT(), HAL_I2C_Master_Transmit(), HAL_I2C_Master_Transmit_DMA(), HAL_I2C_Master_Transmit_IT(), HAL_I2C_Mem_Read(), HAL_I2C_Mem_Read_DMA(), HAL_I2C_Mem_Read_IT(), HAL_I2C_Mem_Write(), HAL_I2C_Mem_Write_DMA(), HAL_I2C_Mem_Write_IT(), I2C_Master_ISR_DMA(), I2C_Master_ISR_IT(), I2C_RequestMemoryRead(), and I2C_RequestMemoryWrite().

static void I2C_TreatErrorCallback

(

I2C_HandleTypeDef *

hi2c

)

[static]

I2C Error callback treatment.

Parameters:

hi2c	I2C handle.

Return values:

None

Definition at line 6106 of file stm32h7xx_hal_i2c.c.

References __I2C_HandleTypeDef::AbortCpltCallback, __I2C_HandleTypeDef::ErrorCallback, HAL_I2C_AbortCpltCallback(), HAL_I2C_ErrorCallback(), HAL_I2C_STATE_ABORT, HAL_I2C_STATE_READY, I2C_STATE_NONE, __I2C_HandleTypeDef::PreviousState, and __I2C_HandleTypeDef::State.

Referenced by I2C_DMAAbort(), and I2C_ITError().

static HAL_StatusTypeDef I2C_WaitOnFlagUntilTimeout	(	I2C_HandleTypeDef *	hi2c,
		uint32_t	Flag,
		FlagStatus	Status,
		uint32_t	Timeout,
		uint32_t	Tickstart
	)		[static]

This function handles I2C Communication Timeout.

It waits until a flag is no longer in the specified status.

Parameters:

hi2c	Pointer to a I2C_HandleTypeDef structure that contains the configuration information for the specified I2C.
Flag	Specifies the I2C flag to check.
Status	The actual Flag status (SET or RESET).
Timeout	Timeout duration
Tickstart	Tick start value

Return values:

HAL

status

Definition at line 6389 of file stm32h7xx_hal_i2c.c.

References __HAL_I2C_GET_FLAG, __I2C_HandleTypeDef::ErrorCode, HAL_GetTick(), HAL_I2C_ERROR_TIMEOUT, HAL_I2C_MODE_NONE, HAL_I2C_STATE_READY, __I2C_HandleTypeDef::Mode, and __I2C_HandleTypeDef::State.

Referenced by HAL_I2C_IsDeviceReady(), HAL_I2C_Master_Receive(), HAL_I2C_Master_Transmit(), HAL_I2C_Mem_Read(), HAL_I2C_Mem_Write(), HAL_I2C_Slave_Receive(), HAL_I2C_Slave_Transmit(), I2C_RequestMemoryRead(), and I2C_RequestMemoryWrite().

static HAL_StatusTypeDef I2C_WaitOnRXNEFlagUntilTimeout	(	I2C_HandleTypeDef *	hi2c,
		uint32_t	Timeout,
		uint32_t	Tickstart
	)		[static]

This function handles I2C Communication Timeout for specific usage of RXNE flag.

Parameters:

hi2c	Pointer to a I2C_HandleTypeDef structure that contains the configuration information for the specified I2C.
Timeout	Timeout duration
Tickstart	Tick start value

Return values:

HAL

status

Definition at line 6493 of file stm32h7xx_hal_i2c.c.

References __HAL_I2C_CLEAR_FLAG, __HAL_I2C_GET_FLAG, __I2C_HandleTypeDef::ErrorCode, HAL_GetTick(), HAL_I2C_ERROR_AF, HAL_I2C_ERROR_NONE, HAL_I2C_ERROR_TIMEOUT, HAL_I2C_MODE_NONE, HAL_I2C_STATE_READY, I2C_FLAG_AF, I2C_FLAG_RXNE, I2C_FLAG_STOPF, I2C_IsErrorOccurred(), I2C_RESET_CR2, __I2C_HandleTypeDef::Mode, __I2C_HandleTypeDef::State, and __I2C_HandleTypeDef::XferSize.

Referenced by HAL_I2C_Master_Receive(), and HAL_I2C_Slave_Receive().

static HAL_StatusTypeDef I2C_WaitOnSTOPFlagUntilTimeout	(	I2C_HandleTypeDef *	hi2c,
		uint32_t	Timeout,
		uint32_t	Tickstart
	)		[static]

This function handles I2C Communication Timeout for specific usage of STOP flag.

Parameters:

hi2c	Pointer to a I2C_HandleTypeDef structure that contains the configuration information for the specified I2C.
Timeout	Timeout duration
Tickstart	Tick start value

Return values:

HAL

status

Definition at line 6458 of file stm32h7xx_hal_i2c.c.

References __HAL_I2C_GET_FLAG, __I2C_HandleTypeDef::ErrorCode, HAL_GetTick(), HAL_I2C_ERROR_TIMEOUT, HAL_I2C_MODE_NONE, HAL_I2C_STATE_READY, I2C_FLAG_STOPF, I2C_IsErrorOccurred(), __I2C_HandleTypeDef::Mode, and __I2C_HandleTypeDef::State.

Referenced by HAL_I2C_Master_Receive(), HAL_I2C_Master_Transmit(), HAL_I2C_Mem_Read(), HAL_I2C_Mem_Write(), HAL_I2C_Slave_Receive(), and HAL_I2C_Slave_Transmit().

static HAL_StatusTypeDef I2C_WaitOnTXISFlagUntilTimeout	(	I2C_HandleTypeDef *	hi2c,
		uint32_t	Timeout,
		uint32_t	Tickstart
	)		[static]

This function handles I2C Communication Timeout for specific usage of TXIS flag.

Parameters:

hi2c	Pointer to a I2C_HandleTypeDef structure that contains the configuration information for the specified I2C.
Timeout	Timeout duration
Tickstart	Tick start value

Return values:

HAL

status

Definition at line 6420 of file stm32h7xx_hal_i2c.c.

References __HAL_I2C_GET_FLAG, __I2C_HandleTypeDef::ErrorCode, HAL_GetTick(), HAL_I2C_ERROR_TIMEOUT, HAL_I2C_MODE_NONE, HAL_I2C_STATE_READY, I2C_FLAG_TXIS, I2C_IsErrorOccurred(), __I2C_HandleTypeDef::Mode, and __I2C_HandleTypeDef::State.

Referenced by HAL_I2C_Master_Transmit(), HAL_I2C_Mem_Write(), HAL_I2C_Slave_Transmit(), I2C_RequestMemoryRead(), and I2C_RequestMemoryWrite().