Description

Inter-integrated Circuit (I2C) Peripheral API.

This module contains functions to control the I2C peripheral of Silicon Labs 32-bit MCUs and SoCs. The I2C interface allows communication on I2C buses with the lowest energy consumption possible.

Data Structures
struct	I2C_Init_TypeDef
	I2C initialization structure.

struct	I2C_TransferSeq_TypeDef
	Master mode transfer message structure used to define a complete I2C transfer sequence (from start to stop).

Functions
uint32_t	I2C_BusFreqGet (I2C_TypeDef *i2c)
	Get the current configured I2C bus frequency.

void	I2C_BusFreqSet (I2C_TypeDef *i2c, uint32_t freqRef, uint32_t freqScl, I2C_ClockHLR_TypeDef i2cMode)
	Set the I2C bus frequency.

void	I2C_Enable (I2C_TypeDef *i2c, bool enable)
	Enable/disable I2C.

void	I2C_Init (I2C_TypeDef i2c, const I2C_Init_TypeDef init)
	Initialize I2C.

void	I2C_IntClear (I2C_TypeDef *i2c, uint32_t flags)
	Clear one or more pending I2C interrupts.

void	I2C_IntDisable (I2C_TypeDef *i2c, uint32_t flags)
	Disable one or more I2C interrupts.

void	I2C_IntEnable (I2C_TypeDef *i2c, uint32_t flags)
	Enable one or more I2C interrupts.

uint32_t	I2C_IntGet (I2C_TypeDef *i2c)
	Get pending I2C interrupt flags.

uint32_t	I2C_IntGetEnabled (I2C_TypeDef *i2c)
	Get enabled and pending I2C interrupt flags.

void	I2C_IntSet (I2C_TypeDef *i2c, uint32_t flags)
	Set one or more pending I2C interrupts from SW.

void	I2C_Reset (I2C_TypeDef *i2c)
	Reset I2C to the same state that it was in after a hardware reset.

uint8_t	I2C_SlaveAddressGet (I2C_TypeDef *i2c)
	Get slave address used for I2C peripheral (when operating in slave mode).

void	I2C_SlaveAddressSet (I2C_TypeDef *i2c, uint8_t addr)
	Set slave address to use for I2C peripheral (when operating in slave mode).

uint8_t	I2C_SlaveAddressMaskGet (I2C_TypeDef *i2c)
	Get slave address mask used for I2C peripheral (when operating in slave mode).

void	I2C_SlaveAddressMaskSet (I2C_TypeDef *i2c, uint8_t mask)
	Set slave address mask used for I2C peripheral (when operating in slave mode).

I2C_TransferReturn_TypeDef	I2C_Transfer (I2C_TypeDef *i2c)
	Continue an initiated I2C transfer (single master mode only).

I2C_TransferReturn_TypeDef	I2C_TransferInit (I2C_TypeDef i2c, I2C_TransferSeq_TypeDef seq)
	Prepare and start an I2C transfer (single master mode only).

Macros
#define	I2C_FREQ_STANDARD_MAX 92000
	Standard mode max frequency assuming using 4:4 ratio for Nlow:Nhigh.

#define	I2C_FREQ_FAST_MAX 392157
	Fast mode max frequency assuming using 6:3 ratio for Nlow:Nhigh.

#define	I2C_FREQ_FASTPLUS_MAX 987167
	Fast mode+ max frequency assuming using 11:6 ratio for Nlow:Nhigh.

I2C - Inter-Integrated Circuit

Description

Data Structures

Functions

Macros