Device::USB::PCSensor::HidTEMPer(3pm)

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 Ruusamäe 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.

POD ERRORS
Hey! The above document had some coding errors, which are explained below:

Around line 205:
    Non-ASCII character seen before =encoding in 'Ruusamäe'. Assuming UTF-8