SMBUS management functions. More...

Functions
void	I2C_SMBusAlertCmd (I2C_TypeDef *I2Cx, FunctionalState NewState)
	Enables or disables I2C SMBus alert. More...

void	I2C_ClockTimeoutCmd (I2C_TypeDef *I2Cx, FunctionalState NewState)
	Enables or disables I2C Clock Timeout (SCL Timeout detection). More...

void	I2C_ExtendedClockTimeoutCmd (I2C_TypeDef *I2Cx, FunctionalState NewState)
	Enables or disables I2C Extended Clock Timeout (SCL cumulative Timeout detection). More...

void	I2C_IdleClockTimeoutCmd (I2C_TypeDef *I2Cx, FunctionalState NewState)
	Enables or disables I2C Idle Clock Timeout (Bus idle SCL and SDA high detection). More...

void	I2C_TimeoutAConfig (I2C_TypeDef *I2Cx, uint16_t Timeout)
	Configures the I2C Bus Timeout A (SCL Timeout when TIDLE = 0 or Bus idle SCL and SDA high when TIDLE = 1). More...

void	I2C_TimeoutBConfig (I2C_TypeDef *I2Cx, uint16_t Timeout)
	Configures the I2C Bus Timeout B (SCL cumulative Timeout). More...

void	I2C_CalculatePEC (I2C_TypeDef *I2Cx, FunctionalState NewState)
	Enables or disables I2C PEC calculation. More...

void	I2C_PECRequestCmd (I2C_TypeDef *I2Cx, FunctionalState NewState)
	Enables or disables I2C PEC transmission/reception request. More...

uint8_t	I2C_GetPEC (I2C_TypeDef *I2Cx)
	Returns the I2C PEC. More...

Detailed Description

SMBUS management functions.

 ===============================================================================
                      ##### SMBUS management functions #####
 ===============================================================================  
    [..] This section provides a set of functions that handles SMBus communication
         and timeouts detection.

    [..] The SMBus Device default address (0b1100 001) is enabled by calling I2C_Init()
         function and setting I2C_Mode member of I2C_InitTypeDef() structure to 
         I2C_Mode_SMBusDevice.

    [..] The SMBus Host address (0b0001 000) is enabled by calling I2C_Init()
         function and setting I2C_Mode member of I2C_InitTypeDef() structure to 
         I2C_Mode_SMBusHost.

    [..] The Alert Response Address (0b0001 100) is enabled using I2C_SMBusAlertCmd()
         function.

    [..] To detect cumulative SCL stretch in master and slave mode, TIMEOUTB should be 
         configured (in accordance to SMBus specification) using I2C_TimeoutBConfig() 
         function then I2C_ExtendedClockTimeoutCmd() function should be called to enable
         the detection.

    [..] SCL low timeout is detected by configuring TIMEOUTB using I2C_TimeoutBConfig()
         function followed by the call of I2C_ClockTimeoutCmd(). When adding to this 
         procedure the call of I2C_IdleClockTimeoutCmd() function, Bus Idle condition 
         (both SCL and SDA high) is detected also.

Function Documentation

void I2C_CalculatePEC	(	I2C_TypeDef *	I2Cx,
		FunctionalState	NewState
	)

Enables or disables I2C PEC calculation.

Parameters

I2Cx,:	where x can be 1 to select the I2C peripheral.
NewState,:	new state of the I2Cx PEC calculation. This parameter can be: ENABLE or DISABLE.

Return values

None

void I2C_ClockTimeoutCmd	(	I2C_TypeDef *	I2Cx,
		FunctionalState	NewState
	)

Enables or disables I2C Clock Timeout (SCL Timeout detection).

Parameters

I2Cx,:	where x can be 1 to select the I2C peripheral.
NewState,:	new state of the I2Cx clock Timeout. This parameter can be: ENABLE or DISABLE.

Return values

None

void I2C_ExtendedClockTimeoutCmd	(	I2C_TypeDef *	I2Cx,
		FunctionalState	NewState
	)

Enables or disables I2C Extended Clock Timeout (SCL cumulative Timeout detection).

Parameters

I2Cx,:	where x can be 1 to select the I2C peripheral.
NewState,:	new state of the I2Cx Extended clock Timeout. This parameter can be: ENABLE or DISABLE.

Return values

None

uint8_t I2C_GetPEC ( I2C_TypeDef * I2Cx )

Returns the I2C PEC.

Parameters

I2Cx,: where x can be 1 to select the I2C peripheral.

Return values

The	value of the PEC .

void I2C_IdleClockTimeoutCmd	(	I2C_TypeDef *	I2Cx,
		FunctionalState	NewState
	)

Enables or disables I2C Idle Clock Timeout (Bus idle SCL and SDA high detection).

Parameters

I2Cx,:	where x can be 1 to select the I2C peripheral.
NewState,:	new state of the I2Cx Idle clock Timeout. This parameter can be: ENABLE or DISABLE.

Return values

None

void I2C_PECRequestCmd	(	I2C_TypeDef *	I2Cx,
		FunctionalState	NewState
	)

Enables or disables I2C PEC transmission/reception request.

Parameters

I2Cx,:	where x can be 1 to select the I2C peripheral.
NewState,:	new state of the I2Cx PEC request. This parameter can be: ENABLE or DISABLE.

Return values

None

void I2C_SMBusAlertCmd	(	I2C_TypeDef *	I2Cx,
		FunctionalState	NewState
	)

Enables or disables I2C SMBus alert.

Parameters

I2Cx,:	where x can be 1 to select the I2C peripheral.
NewState,:	new state of the I2Cx SMBus alert. This parameter can be: ENABLE or DISABLE.

Return values

None

void I2C_TimeoutAConfig	(	I2C_TypeDef *	I2Cx,
		uint16_t	Timeout
	)

Configures the I2C Bus Timeout A (SCL Timeout when TIDLE = 0 or Bus idle SCL and SDA high when TIDLE = 1).

Parameters

I2Cx,:	where x can be 1 to select the I2C peripheral.
Timeout,:	specifies the TimeoutA to be programmed.

Return values

None

void I2C_TimeoutBConfig	(	I2C_TypeDef *	I2Cx,
		uint16_t	Timeout
	)

Configures the I2C Bus Timeout B (SCL cumulative Timeout).

Parameters

I2Cx,:	where x can be 1 to select the I2C peripheral.
Timeout,:	specifies the TimeoutB to be programmed.

Return values

None

Functions

Detailed Description

Function Documentation