Header file for the I2C interface. More...

Macros
#define	F_I2C 100000L

#define	I2C_PORT PORTF

#define	I2C_MODULE TWIF

#define	I2C_SDA_bp PIN0_bp

#define	I2C_SDA_bm PIN0_bm

#define	I2C_SCL_bp PIN1_bp

#define	I2C_SCL_bm PIN1_bm

Functions
void	i2c_init (void)
	Initializes the I2C module. More...

void	i2c_start_write (uint8_t addr)
	Start a write transaction. More...

void	i2c_write (uint8_t data)
	Write one byte. More...

void	i2c_stop (void)
	Close the current transaction. More...

Detailed Description

Header file for the I2C interface.

This library provides high level access to the Inter-Integrated Circuit bus module.

Author: Wolfgang Neff

Version: 3.0

Date: 2016-05-14

History: Created: 2013-06-20
Modified: 2016-05-14
Modified: 2017-12-20

Macro Definition Documentation

◆ F_I2C

#define F_I2C 100000L

◆ I2C_MODULE

#define I2C_MODULE TWIF

◆ I2C_PORT

#define I2C_PORT PORTF

◆ I2C_SCL_bm

#define I2C_SCL_bm PIN1_bm

◆ I2C_SCL_bp

#define I2C_SCL_bp PIN1_bp

◆ I2C_SDA_bm

#define I2C_SDA_bm PIN0_bm

◆ I2C_SDA_bp

#define I2C_SDA_bp PIN0_bp

Function Documentation

◆ i2c_init()

void i2c_init ( void )

Initializes the I2C module.

◆ i2c_start_write()

void i2c_start_write ( uint8_t addr )

Start a write transaction.

Starts a master write transaction by issuing a START condition which is followed by a write request for the addressed slave.

Parameters

addr	The address of the receiver.

◆ i2c_stop()

void i2c_stop ( void )

Close the current transaction.

Closes the current transaction by issuing a STOP condition.

◆ i2c_write()

void i2c_write ( uint8_t data )

Write one byte.

Send one byte to the addressed slave.