I2C slave device control. More...

#include <i2c.h>

Data Fields
ssize_t(*	read )(i2c_dev dev, void buf, size_t n, off_t offset)
	Reads from the device.

ssize_t(*	write )(i2c_dev dev, const void buf, size_t n, off_t offset)
	Writes to the device.

int(*	ioctl )(i2c_dev dev, ioctl_command_t command, void arg)
	Device IO control.

off_t(*	get_size )(i2c_dev *dev)
	Gets the file size.

blksize_t(*	get_block_size )(i2c_dev *dev)
	Gets the file block size.

void(*	destroy )(i2c_dev *dev)
	Destroys the device.

i2c_bus *	bus
	The bus control.

uint16_t	address
	The device address.

int	bus_fd
	File descriptor of the bus.

Detailed Description

I2C slave device control.

Field Documentation

int i2c_dev::bus_fd

File descriptor of the bus.

This prevents destruction of the bus since we hold a reference to it with this.

int(* i2c_dev::ioctl) (i2c_dev *dev, ioctl_command_t command, void *arg)

Device IO control.

Return values

0	Successful operation.
negative	Negative error number in case of an error.

ssize_t(* i2c_dev::read) (i2c_dev *dev, void *buf, size_t n, off_t offset)

Reads from the device.

Return values

non-negative	Bytes transferred from device.
negative	Negative error number in case of an error.

ssize_t(* i2c_dev::write) (i2c_dev *dev, const void *buf, size_t n, off_t offset)

Writes to the device.

Return values

non-negative	Bytes transferred to device.
negative	Negative error number in case of an error.

The documentation for this struct was generated from the following file: