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

VERSION
   version 1.03

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

   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 <[email protected]>

   *   Shantanu <[email protected]>

   *   Shantanu Bhadoria <[email protected]>

   *   Shantanu Bhadoria <[email protected]>

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.

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