NAME

       Device::USB::PCSensor::HidTEMPer - Device overview

VERSION

       Version 0.04

SYNOPSIS

       Shared code:

         use Device::USB::PCSensor::HidTEMPer;
         my $pcsensor = Device::USB::PCSensor::HidTEMPer->new();

       Single-device systems:

         my $device = $pcsensor->device();
         print $device->external()->fahrenheit() if defined $device->external();

       Multi-device systems:

         my @devices = $pcsensor->list_devices();

         foreach my $device ( @devices ){
           print $device->internal()->celsius() if defined $device->internal();
         }

DESCRIPTION

       This module is a simplified interface to the HidTEMPer thermometers created by PCSensor.
       It hides any problems recognizing the correct objects to initialize and the dependency on
       Device::USB. Use of the connected thermometers can be done by either creating a array of
       objects if multiple devices are connected, or the function device() if only one device is
       present.

       One example of its usage can be found in the Linux Journal August 2010, "Cool Projects
       edition" page 32-34.

   CONSTANTS
       The following constants are declared

       •  PRODUCT_ID

          Contains the hex value of the product id on the usb chip, in this case 0x660c

       •  VENDOR_ID

          Contains the hex value representing the manufacturer of the chip, in this case "Tenx
          Technology, Inc."

       •  SUPPORTED_DEVICES

          Contains the mapping between name and identifiers for all supported thermometers.

           Hex value   Product         Internal sensor    External sensor
           0x5b        HidTEMPerNTC    Yes                Yes
           0x58        HidTEMPer       Yes                No
           0x59        HidTEMPer2      Yes                Yes

   METHODS
       •  new()

          Initialize the system, and the USB-connection to be used.

       •  device()

          Return a single thermometer instance. ONLY to be used in systems using a single
          thermometer device. Returns undef if no devices was found.

       •  list_devices()

          Returns an array of recognized thermometer instances if an array value is expected,
          otherwise it returns a scalar with the number of devices found.

DEPENDENCIES

       This module internally includes and takes use of the following packages:

        use Device::USB;
        use Device::USB::PCSensor::HidTEMPer::Device;
        use Device::USB::PCSensor::HidTEMPer::NTC;
        use Device::USB::PCSensor::HidTEMPer::TEMPer;
        use Device::USB::PCSensor::HidTEMPer::TEMPer2;

       This module uses the strict and warning pragmas.

BUGS

       Please report any bugs or missing features using the CPAN RT tool.

FOR MORE INFORMATION

       None

AUTHOR

       Magnus Sulland < msulland@cpan.org >

ACKNOWLEDGEMENTS

       Thanks to Elan RuusamA~Xe for fixing some compatibility issues with perl 5.8.

       Thanks to Daniel Fahlgren for adding the TEMPer2 device.

COPYRIGHT & LICENSE

       Copyright (c) 2010-2011 Magnus Sulland

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