I2C

I2C driver modules 更多...

模块
	I2C_Exported_Constants
	I2C_Private_Functions

结构体
struct	I2C_InitTypeDef
	I2C Initial Configuration Structure definition 更多...

枚举
enum	I2CStatus { I2C_ERROR = 0, I2C_OK = 1, I2C_SUCCESS = 2, I2C_WAITING = 3 }
	I2CStatus enum definition 更多...

函数
void	I2C_DeInit (void)
	Deinitializes the I2C peripheral registers to their default reset values. 更多...
void	I2C_Init (I2C_InitTypeDef *I2C_InitStruct)
	Initializes the I2C peripheral according to the specified parameters in the I2C_InitStruct. 更多...
void	I2C_SlaveAddressConfig (uint32_t SlaveAddress)
	Configures the I2C slave address. 更多...
void	I2C_HighSpeedModeCmd (FunctionalState NewState)
	Configures I2C high speed mode. 更多...
void	I2C_SwitchStatus (uint8_t I2C_STA, uint8_t I2C_STO, uint8_t I2C_AA)
	Writes I2C CR register for switching I2C bus status. 更多...
void	I2C_Start (FunctionalState NewState)
	Sets or clears I2C peripheral start status. 更多...
void	I2C_Stop (FunctionalState NewState)
	Sets or clears I2C peripheral stop status. 更多...
void	I2C_ACK (FunctionalState NewState)
	Sets or clears I2C peripheral ACK status. 更多...
void	I2C_Cmd (FunctionalState NewState)
	Enables or disables I2C peripheral. 更多...
void	I2C_AckGeneralCallCmd (FunctionalState NewState)
	Enables or disables the general ack. 更多...
void	I2C_ReceiveByte (uint8_t *pData)
	Reads data from data register. 更多...
void	I2C_WriteByte (uint8_t I2C_DataCmd)
	Write one byte data. 更多...
void	I2C_WriteAddress (uint8_t Address, uint8_t I2C_Direction)
	Write the slave address byte by the direction. 更多...
I2CStatus	I2C_CheckFlag (uint32_t *I2C_Flag)
	Gets the last I2C module status flag. 更多...
ITStatus	I2C_GetITStatus (void)
	Checks whether I2C interrupt has occurred or not. 更多...
void	I2C_ClearITPendingBit (void)
	Clears I2C interrupt pending bit. 更多...

详细描述

I2C driver modules

枚举类型说明

I2CStatus

enum I2CStatus

I2CStatus enum definition

枚举值
I2C_ERROR	No i2c status flag
I2C_OK	No i2c error status flag
I2C_SUCCESS	Waited i2c status flag
I2C_WAITING	Waiting i2c status flag

函数说明

I2C_ACK()

void I2C_ACK

(

FunctionalState

NewState

)

Sets or clears I2C peripheral ACK status.

参数

NewState

The new state of the I2C ack status. This parameter can be: ENABLE or DISABLE.

返回值

None

I2C_AckGeneralCallCmd()

void I2C_AckGeneralCallCmd

(

FunctionalState

NewState

)

Enables or disables the general ack.

参数

NewState

The new state of the general ack function. This parameter can be: ENABLE or DISABLE.

返回值

None

I2C_CheckFlag()

I2CStatus I2C_CheckFlag

(

uint32_t *

I2C_Flag

)

Gets the last I2C module status flag.

参数

None

返回值

An	I2C Status enumeration value: I2C_SUCCESS: Get the i2c module status I2C_WAITING: Can't get the i2c module status

I2C_ClearITPendingBit()

void I2C_ClearITPendingBit

(

void

)

Clears I2C interrupt pending bit.

参数

None

返回值

None

I2C_Cmd()

void I2C_Cmd

(

FunctionalState

NewState

)

Enables or disables I2C peripheral.

参数

NewState

The new state of the I2C peripheral. This parameter can be: ENABLE or DISABLE.

返回值

None

I2C_DeInit()

void I2C_DeInit

(

void

)

Deinitializes the I2C peripheral registers to their default reset values.

参数

None

返回值

None

I2C_GetITStatus()

ITStatus I2C_GetITStatus

(

void

)

Checks whether I2C interrupt has occurred or not.

参数

None

返回值

The	new state of I2C_IT (SET or RESET).

I2C_HighSpeedModeCmd()

void I2C_HighSpeedModeCmd

(

FunctionalState

NewState

)

Configures I2C high speed mode.

参数

NewState

The new state of the I2C high speed mode. This parameter can be: ENABLE or DISABLE.

返回值

None

I2C_Init()

void I2C_Init

(

I2C_InitTypeDef *

I2C_InitStruct

)

Initializes the I2C peripheral according to the specified parameters in the I2C_InitStruct.

参数

I2C_InitStruct

Pointer to I2C initialization structure.

返回值

None

I2C_ReceiveByte()

void I2C_ReceiveByte

(

uint8_t *

pData

)

Reads data from data register.

参数

pData

pointer to reveive date buffer.

返回值

None

I2C_SlaveAddressConfig()

void I2C_SlaveAddressConfig

(

uint32_t

SlaveAddress

)

Configures the I2C slave address.

参数

SlaveAddress

specifies the I2C slave address.

返回值

None

I2C_Start()

void I2C_Start

(

FunctionalState

NewState

)

Sets or clears I2C peripheral start status.

参数

NewState

The new state of the I2C start status. This parameter can be: ENABLE or DISABLE.

返回值

None

I2C_Stop()

void I2C_Stop

(

FunctionalState

NewState

)

Sets or clears I2C peripheral stop status.

参数

NewState

The new state of the I2C stop status. This parameter can be: ENABLE or DISABLE.

返回值

None

I2C_SwitchStatus()

void I2C_SwitchStatus	(	uint8_t	I2C_STA,
		uint8_t	I2C_STO,
		uint8_t	I2C_AA
	)

Writes I2C CR register for switching I2C bus status.

参数

I2C_STA	The new state of the I2C start status. This parameter can be: I2C_STA_0 or I2C_STA_1.
I2C_STO	The new state of the I2C stop status. This parameter can be: I2C_STO_0 or I2C_STO_1.
I2C_AA	The new state of the I2C ack status. This parameter can be: I2C_AA_0 or I2C_AA_1.

注解

This function will clear SI bit of CR register, and you should switch I2C status accoring to description of user manual.

返回值

None

I2C_WriteAddress()

void I2C_WriteAddress	(	uint8_t	Address,
		uint8_t	I2C_Direction
	)

Write the slave address byte by the direction.

参数

Address	specifies the slave address to write.
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

返回值

None

I2C_WriteByte()

void I2C_WriteByte

(

uint8_t

I2C_DataCmd

)

Write one byte data.

参数

I2C_DataCmd

the data and command to send.

返回值

None.