Initialization and Configuration functions. More...

Collaboration diagram for Initialization and Configuration functions:

Functions
void	I2C_DeInit (I2C_TypeDef *I2Cx)
	Deinitialize the I2Cx peripheral registers to their default reset values. More...

void	I2C_Init (I2C_TypeDef I2Cx, I2C_InitTypeDef I2C_InitStruct)
	Initializes the I2Cx peripheral according to the specified parameters in the I2C_InitStruct. More...

void	I2C_StructInit (I2C_InitTypeDef *I2C_InitStruct)
	Fills each I2C_InitStruct member with its default value. More...

void	I2C_Cmd (I2C_TypeDef *I2Cx, FunctionalState NewState)
	Enables or disables the specified I2C peripheral. More...

void	I2C_AnalogFilterCmd (I2C_TypeDef *I2Cx, FunctionalState NewState)
	Enables or disables the Analog filter of I2C peripheral. More...

void	I2C_DigitalFilterConfig (I2C_TypeDef *I2Cx, uint16_t I2C_DigitalFilter)
	Configures the Digital noise filter of I2C peripheral. More...

void	I2C_GenerateSTART (I2C_TypeDef *I2Cx, FunctionalState NewState)
	Generates I2Cx communication START condition. More...

void	I2C_GenerateSTOP (I2C_TypeDef *I2Cx, FunctionalState NewState)
	Generates I2Cx communication STOP condition. More...

void	I2C_Send7bitAddress (I2C_TypeDef *I2Cx, uint8_t Address, uint8_t I2C_Direction)
	Transmits the address byte to select the slave device. More...

void	I2C_AcknowledgeConfig (I2C_TypeDef *I2Cx, FunctionalState NewState)
	Enables or disables the specified I2C acknowledge feature. More...

void	I2C_OwnAddress2Config (I2C_TypeDef *I2Cx, uint8_t Address)
	Configures the specified I2C own address2. More...

void	I2C_DualAddressCmd (I2C_TypeDef *I2Cx, FunctionalState NewState)
	Enables or disables the specified I2C dual addressing mode. More...

void	I2C_GeneralCallCmd (I2C_TypeDef *I2Cx, FunctionalState NewState)
	Enables or disables the specified I2C general call feature. More...

void	I2C_SoftwareResetCmd (I2C_TypeDef *I2Cx, FunctionalState NewState)
	Enables or disables the specified I2C software reset. More...

void	I2C_StretchClockCmd (I2C_TypeDef *I2Cx, FunctionalState NewState)
	Enables or disables the specified I2C Clock stretching. More...

void	I2C_FastModeDutyCycleConfig (I2C_TypeDef *I2Cx, uint16_t I2C_DutyCycle)
	Selects the specified I2C fast mode duty cycle. More...

void	I2C_NACKPositionConfig (I2C_TypeDef *I2Cx, uint16_t I2C_NACKPosition)
	Selects the specified I2C NACK position in master receiver mode. More...

void	I2C_SMBusAlertConfig (I2C_TypeDef *I2Cx, uint16_t I2C_SMBusAlert)
	Drives the SMBusAlert pin high or low for the specified I2C. More...

void	I2C_ARPCmd (I2C_TypeDef *I2Cx, FunctionalState NewState)
	Enables or disables the specified I2C ARP. More...

Detailed Description

Initialization and Configuration functions.

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            ##### Initialization and Configuration functions #####
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Function Documentation

void I2C_AcknowledgeConfig	(	I2C_TypeDef *	I2Cx,
		FunctionalState	NewState
	)

Enables or disables the specified I2C acknowledge feature.

Parameters

I2Cx	where x can be 1, 2 or 3 to select the I2C peripheral.
NewState	new state of the I2C Acknowledgement. This parameter can be: ENABLE or DISABLE.

Return values

None.

Definition at line 478 of file stm32f4xx_i2c.c.

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void I2C_AnalogFilterCmd	(	I2C_TypeDef *	I2Cx,
		FunctionalState	NewState
	)

Enables or disables the Analog filter of I2C peripheral.

Note: This function can be used only for STM32F42xxx/STM3243xxx and STM32F401xx devices.

Parameters

I2Cx	where x can be 1, 2 or 3 to select the I2C peripheral.
NewState	new state of the Analog filter. This parameter can be: ENABLE or DISABLE.

Note: This function should be called before initializing and enabling the I2C Peripheral.

Return values

None

Definition at line 342 of file stm32f4xx_i2c.c.

void I2C_ARPCmd	(	I2C_TypeDef *	I2Cx,
		FunctionalState	NewState
	)

Enables or disables the specified I2C ARP.

Parameters

I2Cx	where x can be 1, 2 or 3 to select the I2C peripheral.
NewState	new state of the I2Cx ARP. This parameter can be: ENABLE or DISABLE.

Return values

None

Definition at line 718 of file stm32f4xx_i2c.c.

void I2C_Cmd	(	I2C_TypeDef *	I2Cx,
		FunctionalState	NewState
	)

Enables or disables the specified I2C peripheral.

Parameters

I2Cx	where x can be 1, 2 or 3 to select the I2C peripheral.
NewState	new state of the I2Cx peripheral. This parameter can be: ENABLE or DISABLE.

Return values

None

Definition at line 313 of file stm32f4xx_i2c.c.

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void I2C_DeInit ( I2C_TypeDef * I2Cx )

Deinitialize the I2Cx peripheral registers to their default reset values.

Parameters

I2Cx	where x can be 1, 2 or 3 to select the I2C peripheral.

Return values

None

Definition at line 137 of file stm32f4xx_i2c.c.

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void I2C_DigitalFilterConfig	(	I2C_TypeDef *	I2Cx,
		uint16_t	I2C_DigitalFilter
	)

Configures the Digital noise filter of I2C peripheral.

Note: This function can be used only for STM32F42xxx/STM3243xxx and STM32F401xx devices.

Parameters

I2Cx	where x can be 1, 2 or 3 to select the I2C peripheral.
I2C_DigitalFilter	Coefficient of digital noise filter. This parameter can be a number between 0x00 and 0x0F.

Note: This function should be called before initializing and enabling the I2C Peripheral.

Return values

None

Definition at line 371 of file stm32f4xx_i2c.c.

void I2C_DualAddressCmd	(	I2C_TypeDef *	I2Cx,
		FunctionalState	NewState
	)

Enables or disables the specified I2C dual addressing mode.

Parameters

I2Cx	where x can be 1, 2 or 3 to select the I2C peripheral.
NewState	new state of the I2C dual addressing mode. This parameter can be: ENABLE or DISABLE.

Return values

None

Definition at line 528 of file stm32f4xx_i2c.c.

void I2C_FastModeDutyCycleConfig	(	I2C_TypeDef *	I2Cx,
		uint16_t	I2C_DutyCycle
	)

Selects the specified I2C fast mode duty cycle.

Parameters

I2Cx	where x can be 1, 2 or 3 to select the I2C peripheral.
I2C_DutyCycle	specifies the fast mode duty cycle. This parameter can be one of the following values: I2C_DutyCycle_2: I2C fast mode Tlow/Thigh = 2 I2C_DutyCycle_16_9: I2C fast mode Tlow/Thigh = 16/9

Return values

None

Definition at line 628 of file stm32f4xx_i2c.c.

void I2C_GeneralCallCmd	(	I2C_TypeDef *	I2Cx,
		FunctionalState	NewState
	)

Enables or disables the specified I2C general call feature.

Parameters

I2Cx	where x can be 1, 2 or 3 to select the I2C peripheral.
NewState	new state of the I2C General call. This parameter can be: ENABLE or DISABLE.

Return values

None

Definition at line 552 of file stm32f4xx_i2c.c.

void I2C_GenerateSTART	(	I2C_TypeDef *	I2Cx,
		FunctionalState	NewState
	)

Generates I2Cx communication START condition.

Parameters

I2Cx	where x can be 1, 2 or 3 to select the I2C peripheral.
NewState	new state of the I2C START condition generation. This parameter can be: ENABLE or DISABLE.

Return values

None.

Definition at line 399 of file stm32f4xx_i2c.c.

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void I2C_GenerateSTOP	(	I2C_TypeDef *	I2Cx,
		FunctionalState	NewState
	)

Generates I2Cx communication STOP condition.

Parameters

I2Cx	where x can be 1, 2 or 3 to select the I2C peripheral.
NewState	new state of the I2C STOP condition generation. This parameter can be: ENABLE or DISABLE.

Return values

None.

Definition at line 423 of file stm32f4xx_i2c.c.

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void I2C_Init	(	I2C_TypeDef *	I2Cx,
		I2C_InitTypeDef *	I2C_InitStruct
	)

Initializes the I2Cx peripheral according to the specified parameters in the I2C_InitStruct.

Note: To use the I2C at 400 KHz (in fast mode), the PCLK1 frequency (I2C peripheral input clock) must be a multiple of 10 MHz.

Parameters

I2Cx	where x can be 1, 2 or 3 to select the I2C peripheral.
I2C_InitStruct	pointer to a I2C_InitTypeDef structure that contains the configuration information for the specified I2C peripheral.

Return values

None

Definition at line 180 of file stm32f4xx_i2c.c.

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void I2C_NACKPositionConfig	(	I2C_TypeDef *	I2Cx,
		uint16_t	I2C_NACKPosition
	)

Selects the specified I2C NACK position in master receiver mode.

Note: This function is useful in I2C Master Receiver mode when the number of data to be received is equal to 2. In this case, this function should be called (with parameter I2C_NACKPosition_Next) before data reception starts,as described in the 2-byte reception procedure recommended in Reference Manual in Section: Master receiver.

Parameters

I2Cx	where x can be 1, 2 or 3 to select the I2C peripheral.
I2C_NACKPosition	specifies the NACK position. This parameter can be one of the following values: I2C_NACKPosition_Next: indicates that the next byte will be the last received byte. I2C_NACKPosition_Current: indicates that current byte is the last received byte.

Note: This function configures the same bit (POS) as I2C_PECPositionConfig() but is intended to be used in I2C mode while I2C_PECPositionConfig() is intended to used in SMBUS mode.

Return values

None

Definition at line 666 of file stm32f4xx_i2c.c.

void I2C_OwnAddress2Config	(	I2C_TypeDef *	I2Cx,
		uint8_t	Address
	)

Configures the specified I2C own address2.

Parameters

I2Cx	where x can be 1, 2 or 3 to select the I2C peripheral.
Address	specifies the 7bit I2C own address2.

Return values

None.

Definition at line 501 of file stm32f4xx_i2c.c.

void I2C_Send7bitAddress	(	I2C_TypeDef *	I2Cx,
		uint8_t	Address,
		uint8_t	I2C_Direction
	)

Transmits the address byte to select the slave device.

Parameters

I2Cx	where x can be 1, 2 or 3 to select the I2C peripheral.
Address	specifies the slave address which will be transmitted
I2C_Direction	specifies whether the I2C device will be a Transmitter or a Receiver. This parameter can be one of the following values I2C_Direction_Transmitter: Transmitter mode I2C_Direction_Receiver: Receiver mode

Return values

None.

Definition at line 451 of file stm32f4xx_i2c.c.

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void I2C_SMBusAlertConfig	(	I2C_TypeDef *	I2Cx,
		uint16_t	I2C_SMBusAlert
	)

Drives the SMBusAlert pin high or low for the specified I2C.

Parameters

I2Cx	where x can be 1, 2 or 3 to select the I2C peripheral.
I2C_SMBusAlert	specifies SMBAlert pin level. This parameter can be one of the following values: I2C_SMBusAlert_Low: SMBAlert pin driven low I2C_SMBusAlert_High: SMBAlert pin driven high

Return values

None

Definition at line 694 of file stm32f4xx_i2c.c.

void I2C_SoftwareResetCmd	(	I2C_TypeDef *	I2Cx,
		FunctionalState	NewState
	)

Enables or disables the specified I2C software reset.

Note: When software reset is enabled, the I2C IOs are released (this can be useful to recover from bus errors).

Parameters

I2Cx	where x can be 1, 2 or 3 to select the I2C peripheral.
NewState	new state of the I2C software reset. This parameter can be: ENABLE or DISABLE.

Return values

None

Definition at line 578 of file stm32f4xx_i2c.c.

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void I2C_StretchClockCmd	(	I2C_TypeDef *	I2Cx,
		FunctionalState	NewState
	)

Enables or disables the specified I2C Clock stretching.

Parameters

I2Cx	where x can be 1, 2 or 3 to select the I2C peripheral.
NewState	new state of the I2Cx Clock stretching. This parameter can be: ENABLE or DISABLE.

Return values

None

Definition at line 602 of file stm32f4xx_i2c.c.

void I2C_StructInit ( I2C_InitTypeDef * I2C_InitStruct )

Fills each I2C_InitStruct member with its default value.

Parameters

I2C_InitStruct pointer to an I2C_InitTypeDef structure which will be initialized.

Return values

None

Definition at line 289 of file stm32f4xx_i2c.c.

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Functions

Detailed Description

Function Documentation