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

•

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
    

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;

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.