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54cba15e47
Previously a tune up tone was not generated if the first period on a new band was going to be a Tx period, this is no longer so and thus allows low (or high) power tune tones as set up by the user. Note that tune up tones are still not sent for bands flagged as Rx Only in the band hopping schedule, this is to protect active aerials and avoid unintended transmissions on unlicensed bands.
86 lines
2.6 KiB
C++
86 lines
2.6 KiB
C++
#ifndef WSPR_BAND_HOPPING_HPP__
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#define WSPR_BAND_HOPPING_HPP__
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#include <QObject>
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#include "pimpl_h.hpp"
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class QSettings;
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class Configuration;
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class QWidget;
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//
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// WSPR Band Hopping Control
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//
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// WSPR specifies a globally coordinated band hopping schedule and
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// this class implements that.
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//
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// Responsibilities
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//
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// Provides a maintenance dialog allowing the user to define which
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// bands are allowed from the band hopping schedule as defined here:
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//
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// http://physics.princeton.edu/pulsar/K1JT/doc/wspr/wspr-main.html
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//
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// Along with selecting bands a flag indicating that a short tune up
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// signal is required for specified bands before they are used for
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// transmit or receive, unless they are flagged as Rx Only (intended
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// to protect Rx active aerials and non-licensed bands).
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//
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// Provides a Qt property that holds the Tx percentage which is used
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// to generate a semi-randomized schedule of period to transmit. This
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// schedule is random but adjusted to limit the number of consecutive
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// transmission periods, it also adjusts the schedule to ensure that
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// the overall number of transmission periods in any two hour hopping
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// schedule reflects the percentage provided.
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//
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// Collaborations
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//
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// Settings including the selected bands with periods, the tune up
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// flags and the gray line duration are maintained in persistent
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// storage using the provided QSettings object instance.
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//
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// A passed in Configuration object instance is used to query the
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// FrequencyList_v2 model to determine working frequencies for each
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// band. The row index of this model is returned by this classes
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// hopping scheduling method so it may be conveniently used to select
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// a new working frequency by a client.
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//
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class WSPRBandHopping
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: public QObject
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{
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Q_OBJECT;
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Q_PROPERTY (int tx_percent READ tx_percent WRITE set_tx_percent);
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public:
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WSPRBandHopping (QSettings *, Configuration const *, QWidget * parent = nullptr);
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~WSPRBandHopping ();
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// display the band hopping maintenance dialog
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Q_SLOT void show_dialog (bool);
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// Property tx_percent implementation
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int tx_percent () const;
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Q_SLOT void set_tx_percent (int);
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// structure that defines the results of the next_hop() method
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struct Hop
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{
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QString period_name_;
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int frequencies_index_; // may be -1 indicating no change
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bool tune_required_;
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bool tx_next_;
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};
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// return the next band parameters
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Hop next_hop (bool tx_enabled);
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// determine if the next period should be a transmit period
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bool next_is_tx (bool simple_schedule = false);
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private:
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// implementation hidden from public interface
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class impl;
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pimpl<impl> m_;
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};
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#endif
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