Macros
#define	I2C_WRITE 0
	R/W state when write is received.

#define	I2C_READ 1
	R/W state when read is received.

#define	TAxCTL TA0CTL
	Timer control register.

#define	TAxCCR0 TA0CCR0
	Timer Capture/Compare 0 reg.

#define	TAxCCTL0 TA0CCTL0
	Timer cap/comp control 0 reg.

#define	TAxSCLTIMEOUT (12000 / 33)
	Timeout Count for Clock low detection based on ACLK counts (VLO/(VLO/33) = ~30ms)

Functions
void	SMBus_PHY_disable (SMBus *smbus)
	Disables the PHY and Data Link layer. More...

void	SMBus_PHY_enable (SMBus *smbus)
	Enables the PHY and Data Link layer. More...

void	SMBus_PHY_slaveEnable (SMBus *smbus)
	Enables the PHY and Data Link layer for slave operation. More...

void	SMBus_PHY_slaveEnableInt (SMBus *smbus)
	Enables the I2C interrupts. More...

void	SMBus_PHY_slaveInit (SMBus *smbus, uint16_t unused)
	Initializes the I2C Slave module supporting SMBus functionality. More...

SMBus_State	SMBus_PHY_slaveProcessInt (SMBus *smbus)
	I2C Interrupt Service routine. More...

SMBus_State	SMBus_PHY_slaveProcessTimeoutInt (SMBus *smbus)
	Timer interrupt service routine. More...

void	SMBus_PHY_masterEnable (SMBus *smbus)
	Enables the PHY and Data Link layer. More...

void	SMBus_PHY_masterEnableInt (SMBus *smbus)
	Enables the I2C interrupts. More...

void	SMBus_PHY_masterInit (SMBus *smbus, uint16_t unused, uint32_t busClk)
	Initializes the I2C Master module supporting SMBus functionality. More...

void	SMBus_PHY_masterSendStop (SMBus *smbus)
	Generate Stop condition if it hasn't been sent. More...

void	SMBus_PHY_masterSendPreStop (SMBus *smbus)
	Prepare to send stop at next byte. More...

void	SMBus_PHY_masterStartTx (SMBus *smbus, uint8_t targetaddr, SMBus_Stop stopFlag)
	Start a TX transfer. More...

void	SMBus_PHY_masterStartRx (SMBus *smbus, uint8_t targetaddr, SMBus_Stop stopFlag)
	Start a RX transfer. More...

SMBus_State	SMBus_PHY_masterProcessInt (SMBus *smbus)
	I2C Interrupt Service routine. More...

SMBus_State	SMBus_PHY_masterProcessTimeoutInt (SMBus *smbus)
	Timer interrupt service routine. More...

Detailed Description

Function Documentation

void SMBus_PHY_disable ( SMBus * smbus )

Disables the PHY and Data Link layer.

Parameters

smbus Pointer to SMBus structure

Returns: None

References SMBus_Ctrl::bits, SMBus::ctrl, and SMBus_Ctrl::phyEn.

Referenced by SMBus_NWK_masterReset(), SMBus_NWK_slaveProcessTimeout(), SMBus_PHY_masterEnable(), and SMBus_PHY_slaveEnable().

void SMBus_PHY_enable ( SMBus * smbus )

Enables the PHY and Data Link layer.

Parameters

smbus Pointer to SMBus structure

Returns: None

References SMBus_Ctrl::bits, SMBus::ctrl, SMBus_Ctrl::master, SMBus_PHY_masterEnable(), and SMBus_PHY_slaveEnable().

Referenced by SMBus_slaveSetAddress().

void SMBus_PHY_masterEnable ( SMBus * smbus )

Enables the PHY and Data Link layer.

Parameters

smbus Pointer to SMBus structure

Returns: None

References SMBus_Ctrl::bits, SMBus::ctrl, SMBus_Ctrl::intEn, SMBus::ownSlaveAddr, SMBus_Ctrl::phyEn, SMBus_masterEnableInt(), and SMBus_PHY_disable().

Referenced by SMBus_NWK_masterReset(), SMBus_PHY_enable(), and SMBus_PHY_masterInit().

void SMBus_PHY_masterEnableInt ( SMBus * smbus )

Enables the I2C interrupts.

This function enables the USCI Start,Stop, RX,TX interrupts. SMBus_PHY_slaveInit() must be called before this function.

Parameters

smbus Pointer to SMBus structure

Returns: None

References SMBus_Ctrl::bits, SMBus::ctrl, SMBus_Ctrl::intEn, and TAxCCTL0.

Referenced by SMBus_masterEnableInt().

void SMBus_PHY_masterInit	(	SMBus *	smbus,
		uint16_t	unused,
		uint32_t	busClk
	)

Initializes the I2C Master module supporting SMBus functionality.

Resets and then configures the I2C for SMBus support
I2C is enabled using Automatic ACK and Slave address is initialized to 0x00
Parameters

smbus Pointer to SMBus structure

unused This parameter is unused

busClk SMCLK Frequency (used for USCI baud rate)

Returns
None

References SMBus::ownSlaveAddr, SMBus_PHY_masterEnable(), SMBus_Phy::SMBus_Phy_stop, TAxCCR0, TAxCTL, and TAxSCLTIMEOUT.

Referenced by SMBus_masterInit().

SMBus_State SMBus_PHY_masterProcessInt ( SMBus * smbus )

I2C Interrupt Service routine.

Handles the interrupts from USCI module and passes the information to the network layer. Should be called by application when an USCI interrupt is detected.

Parameters

smbus Pointer to SMBus structure

Returns: The new state of master (see SMBus_masterProcessInt())

References SMBus_NWK_masterProcessNACK(), SMBus_NWK_masterProcessRx(), SMBus_NWK_masterProcessTx(), SMBus_Phy::SMBus_Phy_stop, SMBus_Stop_PreRead, SMBus_Stop_Sent, and SMBus::state.

Referenced by SMBus_masterProcessInt().

SMBus_State SMBus_PHY_masterProcessTimeoutInt ( SMBus * smbus )

Timer interrupt service routine.

Handles the timeout interrupts from the Timer module and passes the information to the network layer. Should be callsed by the application when a timer interrupt is detected

Parameters

smbus Pointer to SMBus structure

References SMBus_NWK_masterProcessTimeout().

Referenced by SMBus_masterProcessTimeoutInt().

void SMBus_PHY_masterSendPreStop ( SMBus * smbus )

Prepare to send stop at next byte.

Parameters

smbus Pointer to SMBus structure

Returns: None

References SMBus_Phy::SMBus_Phy_stop, and SMBus_Stop_PreRead.

Referenced by SMBus_NWK_masterProcessRx().

void SMBus_PHY_masterSendStop ( SMBus * smbus )

Generate Stop condition if it hasn't been sent.

Parameters

smbus Pointer to SMBus structure

Returns: None

References SMBus_NWK_masterProcessStop(), SMBus_Phy::SMBus_Phy_stop, and SMBus_Stop_Sent.

Referenced by SMBus_NWK_masterProcessNACK(), SMBus_NWK_masterProcessRx(), SMBus_NWK_masterProcessTx(), SMBus_PHY_masterStartRx(), and SMBus_PHY_masterStartTx().

void SMBus_PHY_masterStartRx	(	SMBus *	smbus,
		uint8_t	targetaddr,
		SMBus_Stop	stopFlag
	)

Start a RX transfer.

Parameters

smbus	Pointer to SMBus structure
targetaddr	Slave target address
stopFlag	Indicates the stop condition

Returns: None

References SMBus_NWK_masterProcessStop(), SMBus_PHY_masterSendStop(), SMBus_Phy::SMBus_Phy_stop, SMBus_Stop_Addr, SMBus_Stop_Immediate, SMBus_Stop_PreRead, and SMBus_Stop_Sent.

Referenced by SMBus_NWK_startRxTransfer().

void SMBus_PHY_masterStartTx	(	SMBus *	smbus,
		uint8_t	targetaddr,
		SMBus_Stop	stopFlag
	)

Start a TX transfer.

Parameters

smbus	Pointer to SMBus structure
targetaddr	Slave target address
stopFlag	Indicates the stop condition

Returns: None

References SMBus_PHY_masterSendStop(), SMBus_Phy::SMBus_Phy_stop, SMBus_Stop_Immediate, and SMBus_Stop_Sent.

Referenced by SMBus_NWK_startTxTransfer().

void SMBus_PHY_slaveEnable ( SMBus * smbus )

Enables the PHY and Data Link layer for slave operation.

Parameters

smbus Pointer to SMBus structure

Returns: None

References SMBus_Ctrl::bits, SMBus::ctrl, SMBus_Ctrl::intEn, SMBus::ownSlaveAddr, SMBus_Ctrl::phyEn, SMBus_PHY_disable(), and SMBus_slaveEnableInt().

Referenced by SMBus_NWK_slaveProcessTimeout(), SMBus_PHY_enable(), and SMBus_PHY_slaveInit().

void SMBus_PHY_slaveEnableInt ( SMBus * smbus )

Enables the I2C interrupts.

This function enables the USCI Start,Stop, RX,TX, Timeout interrupts.

Parameters

smbus Pointer to SMBus structure

Returns: None

References SMBus_Ctrl::bits, SMBus::ctrl, SMBus_Ctrl::intEn, and TAxCCTL0.

Referenced by SMBus_slaveEnableInt().

void SMBus_PHY_slaveInit	(	SMBus *	smbus,
		uint16_t	unused
	)

Initializes the I2C Slave module supporting SMBus functionality.

Resets and then configures the I2C for SMBus support
I2C is enabled using Automatic ACK and Slave address is initialized to 0x00
Call SMBus_slaveSetAddress() in order to set the Slave address
Parameters

smbus Pointer to SMBus structure

unused This parameter is unused

References SMBus::ownSlaveAddr, SMBus_PHY_slaveEnable(), TAxCCR0, TAxCTL, and TAxSCLTIMEOUT.

Referenced by SMBus_slaveInit().

SMBus_State SMBus_PHY_slaveProcessInt ( SMBus * smbus )

I2C Interrupt Service routine.

Handles the interrupts from USCI module and passes the information to the network layer. Should be called by application when an USCI interrupt is detected.

Parameters

smbus Pointer to SMBus structure

Returns: The new state of Slave (see SMBus_slaveProcessInt())

References I2C_READ, SMBus::ownSlaveAddr, SMBus_NWK_slaveProcessRx(), SMBus_NWK_slaveProcessStart(), SMBus_NWK_slaveProcessStop(), SMBus_NWK_slaveProcessTx(), and SMBus_State_Slave_NTR.

Referenced by SMBus_slaveProcessInt().

SMBus_State SMBus_PHY_slaveProcessTimeoutInt ( SMBus * smbus )

Timer interrupt service routine.

Handles the timeout interrupts from the Timer module and passes the information to the network layer. Should be callsed by the application when a timer interrupt is detected

References SMBus_NWK_slaveProcessTimeout().

Referenced by SMBus_slaveProcessTimeoutInt().

smbus	Pointer to SMBus structure
unused	This parameter is unused
busClk	SMCLK Frequency (used for USCI baud rate)

Macros

Functions

Detailed Description

Function Documentation