NAME
    Device::SMBus - Perl interface for smbus using libi2c-dev library.

VERSION
    version 1.05

SYNOPSIS
       use Device::SMBus;
       $dev = Device::SMBus->new(
         I2CBusDevicePath => '/dev/i2c-1',
         I2CDeviceAddress => 0x1e,
       );
       print $dev->readByteData(0x20);

DESCRIPTION
    This is a perl interface to smbus interface using libi2c-dev library.

    Prerequisites:

    *   sudo apt-get install libi2c-dev i2c-tools build-essential

    If you are using Angstrom Linux use the following:

    *   opkg install i2c-tools

    *   opkg install i2c-tools-dev

    Enabling the I2C on a Raspberry Pi:

    You will need to comment out the driver from the blacklist. currently
    the I2C driver isn't being loaded.

         sudo vim /etc/modprobe.d/raspi-blacklist.conf

    Replace this line

         blacklist i2c-bcm2708

    with this

         #blacklist i2c-bcm2708

    You now need to edit the modules conf file.

         sudo vim /etc/modules

    Add these two lines;

         i2c-dev
         i2c-bcm2708

    Now run this command(replace 1 with 0 for older model Pi)

         sudo i2cdetect -y 1

    you should now see the addresses of the i2c devices connected to your
    i2c bus

ATTRIBUTES
  I2CBusDevicePath
    Device path of the I2C Device.

     * On Raspberry Pi Model A this would usually be /dev/i2c-0 if you are using the default pins.
     * On Raspberry Pi Model B this would usually be /dev/i2c-1 if you are using the default pins.

  I2CDeviceAddress
    This is the Address of the device on the I2C bus, this is usually
    available in the device Datasheet.

     * for /dev/i2c-0 look at output of `sudo i2cdetect -y 0' 
     * for /dev/i2c-1 look at output of `sudo i2cdetect -y 1'

METHODS
  fileError
    returns IO::Handle->error() for the device handle since the last
    clearerr

  writeQuick
    $self->writeQuick($value)

  readByte
    $self->readByte()

  writeByte
    $self->writeByte()

  readByteData
    $self->readByteData($register_address)

  writeByteData
    $self->writeByteData($register_address,$value)

  readNBytes
    $self->readNBytes($lowest_byte_address, $number_of_bytes);

    Read together N bytes of Data in linear register order. i.e. to read
    from 0x28,0x29,0x2a

    $self->readNBytes(0x28,3);

  readWordData
    $self->readWordData($register_address)

  writeWordData
    $self->writeWordData($register_address,$value)

  processCall
    $self->processCall($register_address,$value)

  DEMOLISH
    Destructor

CONSTANTS
  I2C_SLAVE
USAGE
    *   This module provides a simplified object oriented interface to the
        libi2c-dev library for accessing electronic peripherals connected on
        the I2C bus. It uses Moose.

see ALSO
    *   Moose

    *   IO::File

    *   Fcntl

SUPPORT
  Bugs / Feature Requests
    Please report any bugs or feature requests through github at
    <https://github.com/shantanubhadoria/device-smbus/issues>. You will be
    notified automatically of any progress on your issue.

  Source Code
    This is open source software. The code repository is available for
    public review and contribution under the terms of the license.

    <https://github.com/shantanubhadoria/device-smbus>

      git clone git://github.com/shantanubhadoria/device-smbus.git

AUTHOR
    Shantanu Bhadoria <shantanu at cpan dott org>

CONTRIBUTORS
    *   Neil Bowers <neil@bowers.com>

    *   Shantanu <shantanu@cpan.org>

    *   Shantanu Bhadoria <shantanu.bhadoria@gmail.com>

    *   Shantanu Bhadoria <shantanu@cpan.org>

    *   root <root@beaglebone.(none)>

COPYRIGHT AND LICENSE
    This software is copyright (c) 2013 by Shantanu Bhadoria.

    This is free software; you can redistribute it and/or modify it under
    the same terms as the Perl 5 programming language system itself.