Device::USB::PCSensor::HidTEMPer(3pm)			User Contributed Perl Documentation		     Device::USB::PCSensor::HidTEMPer(3pm)

NAME

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

VERSION

       Version 0.02

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

       o  PRODUCT_ID

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

       o  VENDOR_ID

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

       o  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

   METHODS
       o  new()

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

       o  device()

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

       o  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;

       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

       None

COPYRIGHT &; LICENSE
       Copyright (c) 2010 Magnus Sulland

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

perl v5.10.1							    2010-07-24				     Device::USB::PCSensor::HidTEMPer(3pm)