device::usb::pcsensor::hidtemper::ntc::external(3pm) [debian man page]

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

       Device::USB::PCSensor::HidTEMPer::NTC::Internal - The HidTEMPerNTC external sensor

VERSION

       Version 0.02

SYNOPSIS

       None

DESCRIPTION

       This is the implementation of the HidTEMPerNTC external sensor.

   CONSTANTS
       o  MAX_TEMPERATURE

	  The highest temperature(150 degrees celsius) this sensor can detect.

       o  MIN_TEMPERATURE

	  The lowest temperature(-50 degrees celsius) this sensor can detect.

       o  INITIAL_GAIN

	  The initial gain value used to calculate voltage returned

       o  CALIBRATION_VALUES

	  Values used to calculate Volt7705Calibration

   METHODS
       o  new()

	  Returns a new External sensor object.

       o  celsius()

	  Returns the current temperature from the device in celsius degrees.

	  The formula used to calculate value based on a calibrated key value is created using the Eureqa tool from Cornell Computational
	  Synthesis Lab, http://ccsl.mae.cornell.edu/eureqa.

	  Resulting in the use of this formula instead of the provided number list: f(y)=66.7348/(66.7275/(67.8088 - 9.70353*log(0.000251309 +
	  y*y)) - 0.21651)

	  If you find another formula that is more accurate please drop me a line.  The data used can be found in the source code of this file.

INHERIT METHODS FROM

       Device::USB::PCSensor::HidTEMPer::Sensor

DEPENDENCIES

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

	 use Carp;
	 use Time::HiRes qw / sleep /;
	 use Device::USB::PCSensor::HidTEMPer::Sensor;

       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

       This code includes findings done by Robin B. Jensen, http://www.drunkardswalk.dk, when converting the received hex values into volt.

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::NTC::External(3pm)

Device::USB::DevEndpoint(3pm)				User Contributed Perl Documentation			     Device::USB::DevEndpoint(3pm)

Device::USB::DevEndpoint
       This class encapsulates a USB Device endpoint and the methods that object would support.

NAME

       Device::USB::DevEndpoint - Access a device endpoint returned by libusb.

VERSION

       Version 0.11

SYNOPSIS

       Device::USB:DevEndpoint provides a Perl object for accessing an endpoint of an interface of a USB device using the libusb library.

	   use Device::USB;

	   my $usb = Device::USB->new();
	   my $dev = $usb->find_device( $VENDOR, $PRODUCT );

	   printf "Device: %04X:%04X
", $dev->idVendor(), $dev->idProduct();
	   $dev->open();

	   my $cfg = $dev->config()->[0];
	   my $inter = $cfg->interfaces()->[0]->[0];
	   my $ep = $inter->endpoints()->[0];
	   print "Endpoint:", $inter->bEndpointAddress(),
	      " name: ", $dev->get_string_simple($iter->iInterface()), "
";

       See USB specification for an explanation of the attributes of an endpoint.

DESCRIPTION

       This module defines a Perl object that represents the data associated with a USB interface endpoint. The object provides read-only access
       to the important data associated with the endpoint.

   METHODS
       There are several accessor methods that return data from the interface.	Each is named after the field that they return. These accessors
       include:

       bEndpointAddress
       bmAttributes
       wMaxPacketSize
       bInterval
       bRefresh
       bSynchAddress

DIAGNOSTICS

       This is an explanation of the diagnostic and error messages this module can generate.

DEPENDENCIES

       This module depends on the Carp, Inline and Inline::C modules, as well as the strict and warnings pragmas. Obviously, libusb must be
       available since that is the entire reason for the module's existence.

AUTHOR

       G. Wade Johnson (wade at anomaly dot org) Paul Archer (paul at paularcher dot org)

       Houston Perl Mongers Group

BUGS

       Please report any bugs or feature requests to "bug-device-usb@rt.cpan.org", or through the web interface at
       <http://rt.cpan.org/NoAuth/ReportBug.html?Device::USB>.	I will be notified, and then you'll automatically be notified of progress on your
       bug as I make changes.

ACKNOWLEDGEMENTS

       Thanks go to various members of the Houston Perl Mongers group for input on the module. But thanks mostly go to Paul Archer who proposed
       the project and helped with the development.

COPYRIGHT &; LICENSE
       Copyright 2006 Houston Perl Mongers

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

perl v5.14.2							    2008-06-02					     Device::USB::DevEndpoint(3pm)