]> git.mxchange.org Git - flightgear.git/commitdiff
Moved kr_87.[ch]xx and made it a configurable instrumentation item.
authorcurt <curt>
Mon, 18 Oct 2004 19:58:37 +0000 (19:58 +0000)
committercurt <curt>
Mon, 18 Oct 2004 19:58:37 +0000 (19:58 +0000)
src/Instrumentation/Makefile.am
src/Instrumentation/instrument_mgr.cxx
src/Instrumentation/kr_87.cxx [new file with mode: 0644]
src/Instrumentation/kr_87.hxx [new file with mode: 0644]

index fdbe202f14eba8ed9a045a342d5c823c3ca8966a..72c6472cb626b4fdf79f286c79baeea742e1eae0 100644 (file)
@@ -2,19 +2,20 @@ noinst_LIBRARIES = libInstrumentation.a
 
 libInstrumentation_a_SOURCES = \
        instrument_mgr.cxx instrument_mgr.hxx \
+       adf.cxx adf.hxx \
+        airspeed_indicator.cxx airspeed_indicator.hxx \
+        altimeter.cxx altimeter.hxx \
        annunciator.cxx annunciator.hxx \
+        attitude_indicator.cxx attitude_indicator.hxx \
+        clock.cxx clock.hxx \
         dme.cxx dme.hxx \
         gps.cxx gps.hxx \
-       adf.cxx adf.hxx \
         gyro.cxx gyro.hxx \
-        airspeed_indicator.cxx airspeed_indicator.hxx \
-        attitude_indicator.cxx attitude_indicator.hxx \
-        altimeter.cxx altimeter.hxx \
-        turn_indicator.cxx turn_indicator.hxx \
-        slip_skid_ball.cxx slip_skid_ball.hxx \
         heading_indicator.cxx heading_indicator.hxx \
-        vertical_speed_indicator.cxx vertical_speed_indicator.hxx \
+       kr_87.hxx kr_87.cxx \
         mag_compass.cxx mag_compass.hxx \
-        clock.cxx clock.hxx
+        slip_skid_ball.cxx slip_skid_ball.hxx \
+        turn_indicator.cxx turn_indicator.hxx \
+        vertical_speed_indicator.cxx vertical_speed_indicator.hxx
 
 INCLUDES = -I$(top_srcdir) -I$(top_srcdir)/src
index c59426d429a057f13e3e9c9bc43c4a51d147f103..57e1ebae72676ff743382822a8f2aae8b1d8c6fc 100644 (file)
 #include <Main/util.hxx>
 
 #include "instrument_mgr.hxx"
+#include "adf.hxx"
 #include "airspeed_indicator.hxx"
+#include "altimeter.hxx"
 #include "annunciator.hxx"
 #include "attitude_indicator.hxx"
-#include "altimeter.hxx"
-#include "turn_indicator.hxx"
-#include "slip_skid_ball.hxx"
-#include "heading_indicator.hxx"
-#include "vertical_speed_indicator.hxx"
-#include "mag_compass.hxx"
-
+#include "clock.hxx"
 #include "dme.hxx"
-#include "adf.hxx"
 #include "gps.hxx"
-#include "clock.hxx"
+#include "heading_indicator.hxx"
+#include "kr_87.cxx"
+#include "mag_compass.hxx"
+#include "slip_skid_ball.hxx"
+#include "turn_indicator.hxx"
+#include "vertical_speed_indicator.hxx"
 
 
 FGInstrumentMgr::FGInstrumentMgr ()
@@ -123,6 +123,9 @@ bool FGInstrumentMgr::build ()
         } else if ( name == "heading-indicator" ) {
             set_subsystem( "instrument" + temp.str(), 
                            new HeadingIndicator( node ) );
+        } else if ( name == "KR-87" ) {
+            set_subsystem( "instrument" + temp.str(), 
+                           new FGKR_87( node ) );
         } else if ( name == "magnetic-compass" ) {
             set_subsystem( "instrument" + temp.str(), 
                            new MagCompass( node ) );
diff --git a/src/Instrumentation/kr_87.cxx b/src/Instrumentation/kr_87.cxx
new file mode 100644 (file)
index 0000000..404a5e4
--- /dev/null
@@ -0,0 +1,558 @@
+// kr-87.cxx -- class to impliment the King KR 87 Digital ADF
+//
+// Written by Curtis Olson, started April 2002.
+//
+// Copyright (C) 2002  Curtis L. Olson - curt@flightgear.org
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation; either version 2 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+//
+// $Id$
+
+
+#ifdef HAVE_CONFIG_H
+#  include <config.h>
+#endif
+
+#include <stdio.h>     // snprintf
+
+#include <simgear/compiler.h>
+#include <simgear/math/sg_random.h>
+
+#include <Aircraft/aircraft.hxx>
+#include <Navaids/navlist.hxx>
+
+#include "kr_87.hxx"
+
+#include <string>
+SG_USING_STD(string);
+
+static int play_count = 0;
+static time_t last_time = 0;
+
+
+/**
+ * Boy, this is ugly!  Make the VOR range vary by altitude difference.
+ */
+static double kludgeRange ( double stationElev, double aircraftElev,
+                           double nominalRange)
+{
+                               // Assume that the nominal range (usually
+                               // 50nm) applies at a 5,000 ft difference.
+                               // Just a wild guess!
+  double factor = (aircraftElev - stationElev)*SG_METER_TO_FEET / 5000.0;
+  double range = fabs(nominalRange * factor);
+
+                               // Clamp the range to keep it sane; for
+                               // now, never less than 50% or more than
+                               // 500% of nominal range.
+  if (range < nominalRange/2.0) {
+    range = nominalRange/2.0;
+  } else if (range > nominalRange*5.0) {
+    range = nominalRange*5.0;
+  }
+
+  return range;
+}
+
+
+// Constructor
+FGKR_87::FGKR_87( SGPropertyNode *node ) :
+    lon_node(fgGetNode("/position/longitude-deg", true)),
+    lat_node(fgGetNode("/position/latitude-deg", true)),
+    alt_node(fgGetNode("/position/altitude-ft", true)),
+    bus_power(fgGetNode("/systems/electrical/outputs/adf", true)),
+    serviceable(fgGetNode("/instrumentation/adf/serviceable", true)),
+    need_update(true),
+    valid(false),
+    inrange(false),
+    dist(0.0),
+    heading(0.0),
+    goal_needle_deg(0.0),
+    et_flash_time(0.0),
+    ant_mode(0),
+    stby_mode(0),
+    timer_mode(0),
+    count_mode(0),
+    rotation(0),
+    power_btn(true),
+    audio_btn(true),
+    vol_btn(0.5),
+    adf_btn(true),
+    bfo_btn(false),
+    frq_btn(false),
+    last_frq_btn(false),
+    flt_et_btn(false),
+    last_flt_et_btn(false),
+    set_rst_btn(false),
+    last_set_rst_btn(false),
+    freq(0),
+    stby_freq(0),
+    needle_deg(0.0),
+    flight_timer(0.0),
+    elapsed_timer(0.0),
+    tmp_timer(0.0)
+{
+}
+
+
+// Destructor
+FGKR_87::~FGKR_87() {
+}
+
+
+void FGKR_87::init () {
+    serviceable->setBoolValue( true );
+    morse.init();
+}
+
+
+void FGKR_87::bind () {
+    // internal values
+    fgTie("/radios/kr-87/internal/valid", this, &FGKR_87::get_valid);
+    fgTie("/radios/kr-87/internal/inrange", this, &FGKR_87::get_inrange);
+    fgTie("/radios/kr-87/internal/dist", this, &FGKR_87::get_dist);
+    fgTie("/radios/kr-87/internal/heading", this, &FGKR_87::get_heading);
+
+    // modes
+    fgTie("/radios/kr-87/modes/ant", this,
+         &FGKR_87::get_ant_mode);
+    fgTie("/radios/kr-87/modes/stby", this,
+         &FGKR_87::get_stby_mode);
+    fgTie("/radios/kr-87/modes/timer", this,
+         &FGKR_87::get_timer_mode);
+    fgTie("/radios/kr-87/modes/count", this,
+         &FGKR_87::get_count_mode);
+
+    // input and buttons
+    fgTie("/radios/kr-87/inputs/rotation-deg", this,
+         &FGKR_87::get_rotation, &FGKR_87::set_rotation);
+    fgSetArchivable("/radios/kr-87/inputs/rotation-deg");
+    fgTie("/radios/kr-87/inputs/power-btn", this,
+         &FGKR_87::get_power_btn,
+         &FGKR_87::set_power_btn);
+    fgSetArchivable("/radios/kr-87/inputs/power-btn");
+    fgTie("/radios/kr-87/inputs/audio-btn", this,
+         &FGKR_87::get_audio_btn,
+         &FGKR_87::set_audio_btn);
+    fgSetArchivable("/radios/kr-87/inputs/audio-btn");
+    fgTie("/radios/kr-87/inputs/volume", this,
+         &FGKR_87::get_vol_btn,
+         &FGKR_87::set_vol_btn);
+    fgSetArchivable("/radios/kr-87/inputs/volume");
+    fgTie("/radios/kr-87/inputs/adf-btn", this,
+         &FGKR_87::get_adf_btn,
+         &FGKR_87::set_adf_btn);
+    fgTie("/radios/kr-87/inputs/bfo-btn", this,
+         &FGKR_87::get_bfo_btn,
+         &FGKR_87::set_bfo_btn);
+    fgTie("/radios/kr-87/inputs/frq-btn", this,
+         &FGKR_87::get_frq_btn,
+         &FGKR_87::set_frq_btn);
+    fgTie("/radios/kr-87/inputs/flt-et-btn", this,
+         &FGKR_87::get_flt_et_btn,
+         &FGKR_87::set_flt_et_btn);
+    fgTie("/radios/kr-87/inputs/set-rst-btn", this,
+         &FGKR_87::get_set_rst_btn,
+         &FGKR_87::set_set_rst_btn);
+
+    // outputs
+    fgTie("/radios/kr-87/outputs/selected-khz", this,
+         &FGKR_87::get_freq, &FGKR_87::set_freq);
+    fgSetArchivable("/radios/kr-87/outputs/selected-khz");
+    fgTie("/radios/kr-87/outputs/standby-khz", this,
+         &FGKR_87::get_stby_freq, &FGKR_87::set_stby_freq);
+    fgSetArchivable("/radios/kr-87/outputs/standby-khz");
+    fgTie("/radios/kr-87/outputs/needle-deg", this,
+         &FGKR_87::get_needle_deg);
+    fgTie("/radios/kr-87/outputs/flight-timer", this, &FGKR_87::get_flight_timer);
+    fgTie("/radios/kr-87/outputs/elapsed-timer", this,
+          &FGKR_87::get_elapsed_timer,
+          &FGKR_87::set_elapsed_timer);
+
+    // annunciators
+    fgTie("/radios/kr-87/annunciators/ant", this, &FGKR_87::get_ant_ann );
+    fgTie("/radios/kr-87/annunciators/adf", this, &FGKR_87::get_adf_ann );
+    fgTie("/radios/kr-87/annunciators/bfo", this, &FGKR_87::get_bfo_ann );
+    fgTie("/radios/kr-87/annunciators/frq", this, &FGKR_87::get_frq_ann );
+    fgTie("/radios/kr-87/annunciators/flt", this, &FGKR_87::get_flt_ann );
+    fgTie("/radios/kr-87/annunciators/et", this, &FGKR_87::get_et_ann );
+}
+
+
+void FGKR_87::unbind () {
+    // internal values
+    fgUntie("/radios/kr-87/internal/valid");
+    fgUntie("/radios/kr-87/internal/inrange");
+    fgUntie("/radios/kr-87/internal/dist");
+    fgUntie("/radios/kr-87/internal/heading");
+
+    // modes
+    fgUntie("/radios/kr-87/modes/ant");
+    fgUntie("/radios/kr-87/modes/stby");
+    fgUntie("/radios/kr-87/modes/timer");
+    fgUntie("/radios/kr-87/modes/count");
+
+    // input and buttons
+    fgUntie("/radios/kr-87/inputs/rotation-deg");
+    fgUntie("/radios/kr-87/inputs/power-btn");
+    fgUntie("/radios/kr-87/inputs/volume");
+    fgUntie("/radios/kr-87/inputs/adf-btn");
+    fgUntie("/radios/kr-87/inputs/bfo-btn");
+    fgUntie("/radios/kr-87/inputs/frq-btn");
+    fgUntie("/radios/kr-87/inputs/flt-et-btn");
+    fgUntie("/radios/kr-87/inputs/set-rst-btn");
+    fgUntie("/radios/kr-87/inputs/ident-btn");
+
+    // outputs
+    fgUntie("/radios/kr-87/outputs/selected-khz");
+    fgUntie("/radios/kr-87/outputs/standby-khz");
+    fgUntie("/radios/kr-87/outputs/needle-deg");
+    fgUntie("/radios/kr-87/outputs/flight-timer");
+    fgUntie("/radios/kr-87/outputs/elapsed-timer");
+
+    // annunciators
+    fgUntie("/radios/kr-87/annunciators/ant");
+    fgUntie("/radios/kr-87/annunciators/adf");
+    fgUntie("/radios/kr-87/annunciators/bfo");
+    fgUntie("/radios/kr-87/annunciators/frq");
+    fgUntie("/radios/kr-87/annunciators/flt");
+    fgUntie("/radios/kr-87/annunciators/et");
+}
+
+
+// Update the various nav values based on position and valid tuned in navs
+void FGKR_87::update( double dt ) {
+    double acft_lon = lon_node->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
+    double acft_lat = lat_node->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
+    double acft_elev = alt_node->getDoubleValue() * SG_FEET_TO_METER;
+
+    need_update = false;
+
+    Point3D aircraft = sgGeodToCart( Point3D( acft_lon, acft_lat, acft_elev ) );
+    Point3D station;
+    double az1, az2, s;
+
+    ////////////////////////////////////////////////////////////////////////
+    // Radio
+    ////////////////////////////////////////////////////////////////////////
+
+    if ( has_power() && serviceable->getBoolValue() ) {
+        // buttons
+        if ( adf_btn == 0 ) {
+            ant_mode = 1;
+        } else {
+            ant_mode = 0;
+        }
+        // cout << "ant_mode = " << ant_mode << endl;
+
+        if ( frq_btn && frq_btn != last_frq_btn && stby_mode == 0 ) {
+            int tmp = freq;
+            freq = stby_freq;
+            stby_freq = tmp;
+        } else if ( frq_btn ) {
+            stby_mode = 0;
+            count_mode = 0;
+        }
+        last_frq_btn = frq_btn;
+
+        if ( flt_et_btn && flt_et_btn != last_flt_et_btn ) {
+            if ( stby_mode == 0 ) {
+                timer_mode = 0;
+            } else {
+                timer_mode = !timer_mode;
+            }
+            stby_mode = 1;
+        }
+        last_flt_et_btn = flt_et_btn;
+
+        if ( set_rst_btn == 1 && set_rst_btn != last_set_rst_btn ) {
+            // button depressed
+           tmp_timer = 0.0;
+        }
+        if ( set_rst_btn == 1 && set_rst_btn == last_set_rst_btn ) {
+            // button depressed and was last iteration too
+            tmp_timer += dt;
+            // cout << "tmp_timer = " << tmp_timer << endl;
+            if ( tmp_timer > 2.0 ) {
+                // button held depressed for 2 seconds
+                // cout << "entering elapsed count down mode" << endl;
+                timer_mode = 1;
+                count_mode = 2;
+                elapsed_timer = 0.0;
+            }    
+        }
+        if ( set_rst_btn == 0 && set_rst_btn != last_set_rst_btn ) {
+            // button released
+            if ( tmp_timer > 2.0 ) {
+                // button held depressed for 2 seconds, don't adjust
+                // mode, just exit                
+            } else if ( count_mode == 2 ) {
+                count_mode = 1;
+            } else {
+                count_mode = 0;
+                elapsed_timer = 0.0;
+            }
+        }
+        last_set_rst_btn = set_rst_btn;
+
+        // timers
+        flight_timer += dt;
+
+        if ( set_rst_btn == 0 ) {
+            // only count if set/rst button not depressed
+            if ( count_mode == 0 ) {
+                elapsed_timer += dt;
+            } else if ( count_mode == 1 ) {
+                elapsed_timer -= dt;
+                if ( elapsed_timer < 1.0 ) {
+                    count_mode = 0;
+                    elapsed_timer = 0.0;
+                }
+            }
+        }
+
+        // annunciators
+        ant_ann = !adf_btn;
+        adf_ann = adf_btn;
+        bfo_ann = bfo_btn;
+        frq_ann = !stby_mode;
+        flt_ann = stby_mode && !timer_mode;
+        if ( count_mode < 2 ) {
+            et_ann = stby_mode && timer_mode;
+        } else {
+            et_flash_time += dt;
+            if ( et_ann && et_flash_time > 0.5 ) {
+                et_ann = false;
+                et_flash_time -= 0.5;
+            } else if ( !et_ann && et_flash_time > 0.2 ) {
+                et_ann = true;
+                et_flash_time -= 0.2;
+            }
+        }
+
+        if ( valid ) {
+            // cout << "adf is valid" << endl;
+            // staightline distance
+            station = Point3D( x, y, z );
+            dist = aircraft.distance3D( station );
+
+            // wgs84 heading
+            geo_inverse_wgs_84( acft_elev,
+                                acft_lat * SGD_RADIANS_TO_DEGREES,
+                                acft_lon * SGD_RADIANS_TO_DEGREES, 
+                                stn_lat, stn_lon,
+                                &az1, &az2, &s );
+            heading = az1;
+            // cout << " heading = " << heading
+            //      << " dist = " << dist << endl;
+
+            effective_range = kludgeRange(stn_elev, acft_elev, range);
+            if ( dist < effective_range * SG_NM_TO_METER ) {
+                inrange = true;
+            } else if ( dist < 2 * effective_range * SG_NM_TO_METER ) {
+                inrange = sg_random() < 
+                    ( 2 * effective_range * SG_NM_TO_METER - dist ) /
+                    (effective_range * SG_NM_TO_METER);
+            } else {
+                inrange = false;
+            }
+
+            // cout << "inrange = " << inrange << endl;
+
+            if ( inrange ) {
+                goal_needle_deg = heading
+                    - fgGetDouble("/orientation/heading-deg");
+            }
+        } else {
+            inrange = false;
+        }
+
+        if ( ant_mode ) {
+            goal_needle_deg = 90.0;
+        }
+    } else {
+        // unit turned off
+        goal_needle_deg = 0.0;
+        flight_timer = 0.0;
+        elapsed_timer = 0.0;
+        ant_ann = false;
+        adf_ann = false;
+        bfo_ann = false;
+        frq_ann = false;
+        flt_ann = false;
+        et_ann = false;
+    }
+
+    // formatted timer
+    double time;
+    int hours, min, sec;
+    if ( timer_mode == 0 ) {
+        time = flight_timer;
+    } else {
+        time = elapsed_timer;
+    }
+    // cout << time << endl;
+    hours = (int)(time / 3600.0);
+    time -= hours * 3600.00;
+    min = (int)(time / 60.0);
+    time -= min * 60.0;
+    sec = (int)time;
+    int big, little;
+    if ( hours > 0 ) {
+        big = hours;
+        if ( big > 99 ) {
+            big = 99;
+        }
+        little = min;
+    } else {
+        big = min;
+        little = sec;
+    }
+    if ( big > 99 ) {
+        big = 99;
+    }
+    char formatted_timer[128];
+    // cout << big << ":" << little << endl;
+    snprintf(formatted_timer, 6, "%02d:%02d", big, little);
+    fgSetString( "/radios/kr-87/outputs/timer-string", formatted_timer );
+
+    while ( goal_needle_deg < 0.0 ) { goal_needle_deg += 360.0; }
+    while ( goal_needle_deg >= 360.0 ) { goal_needle_deg -= 360.0; }
+
+    double diff = goal_needle_deg - needle_deg;
+    while ( diff < -180.0 ) { diff += 360.0; }
+    while ( diff > 180.0 ) { diff -= 360.0; }
+
+    needle_deg += diff * dt * 4;
+    while ( needle_deg < 0.0 ) { needle_deg += 360.0; }
+    while ( needle_deg >= 360.0 ) { needle_deg -= 360.0; }
+
+    // cout << "goal = " << goal_needle_deg << " actual = " << needle_deg
+    //      << endl;
+    // cout << "flt = " << flight_timer << " et = " << elapsed_timer 
+    //      << " needle = " << needle_deg << endl;
+
+    if ( valid && inrange && serviceable->getBoolValue() ) {
+       // play station ident via audio system if on + ant mode,
+       // otherwise turn it off
+       if ( vol_btn >= 0.01 && audio_btn ) {
+           SGSoundSample *sound;
+           sound = globals->get_soundmgr()->find( "adf-ident" );
+            if ( sound != NULL ) {
+                if ( !adf_btn ) {
+                    sound->set_volume( vol_btn );
+                } else {
+                    sound->set_volume( vol_btn / 4.0 );
+                }
+            } else {
+                SG_LOG( SG_COCKPIT, SG_ALERT, "Can't find adf-ident sound" );
+            }
+           if ( last_time <
+                globals->get_time_params()->get_cur_time() - 30 ) {
+               last_time = globals->get_time_params()->get_cur_time();
+               play_count = 0;
+           }
+           if ( play_count < 4 ) {
+               // play ADF ident
+               if ( !globals->get_soundmgr()->is_playing("adf-ident") ) {
+                   globals->get_soundmgr()->play_once( "adf-ident" );
+                   ++play_count;
+               }
+           }
+       } else {
+           globals->get_soundmgr()->stop( "adf-ident" );
+       }
+    }
+}
+
+
+// Update current nav/adf radio stations based on current postition
+void FGKR_87::search() {
+    double acft_lon = lon_node->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
+    double acft_lat = lat_node->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
+    double acft_elev = alt_node->getDoubleValue() * SG_FEET_TO_METER;
+
+                               // FIXME: the panel should handle this
+    static string last_ident = "";
+
+    ////////////////////////////////////////////////////////////////////////
+    // ADF.
+    ////////////////////////////////////////////////////////////////////////
+
+    FGNavRecord *adf
+        = globals->get_navlist()->findByFreq( freq, acft_lon, acft_lat,
+                                              acft_elev );
+    if ( adf != NULL ) {
+       char sfreq[128];
+       snprintf( sfreq, 10, "%d", freq );
+       ident = sfreq;
+       ident += adf->get_ident();
+        // cout << "adf ident = " << ident << endl;
+       valid = true;
+       if ( last_ident != ident ) {
+           last_ident = ident;
+
+           trans_ident = adf->get_trans_ident();
+           stn_lon = adf->get_lon();
+           stn_lat = adf->get_lat();
+           stn_elev = adf->get_elev_ft();
+           range = adf->get_range();
+           effective_range = kludgeRange(stn_elev, acft_elev, range);
+           x = adf->get_x();
+           y = adf->get_y();
+           z = adf->get_z();
+
+           if ( globals->get_soundmgr()->exists( "adf-ident" ) ) {
+               globals->get_soundmgr()->remove( "adf-ident" );
+           }
+           SGSoundSample *sound;
+           sound = morse.make_ident( trans_ident, LO_FREQUENCY );
+           sound->set_volume( 0.3 );
+           globals->get_soundmgr()->add( sound, "adf-ident" );
+
+           int offset = (int)(sg_random() * 30.0);
+           play_count = offset / 4;
+           last_time = globals->get_time_params()->get_cur_time() -
+               offset;
+           // cout << "offset = " << offset << " play_count = "
+           //      << play_count << " last_time = "
+           //      << last_time << " current time = "
+           //      << globals->get_time_params()->get_cur_time() << endl;
+
+           // cout << "Found an adf station in range" << endl;
+           // cout << " id = " << nav->get_ident() << endl;
+       }
+    } else {
+       valid = false;
+       ident = "";
+       trans_ident = "";
+       globals->get_soundmgr()->remove( "adf-ident" );
+       last_ident = "";
+       // cout << "not picking up adf. :-(" << endl;
+    }
+}
+
+
+int FGKR_87::get_stby_freq() const {
+    if ( stby_mode == 0 ) {
+        return stby_freq;
+    } else {
+        if ( timer_mode == 0 ) {
+            return (int)flight_timer;
+        } else {
+            return (int)elapsed_timer;
+        }
+    }
+}
diff --git a/src/Instrumentation/kr_87.hxx b/src/Instrumentation/kr_87.hxx
new file mode 100644 (file)
index 0000000..bc2f3d5
--- /dev/null
@@ -0,0 +1,188 @@
+// kr-87.hxx -- class to impliment the King KR 87 Digital ADF
+//
+// Written by Curtis Olson, started June 2002.
+//
+// Copyright (C) 2002  Curtis L. Olson - curt@flightgear.org
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation; either version 2 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+//
+// $Id$
+
+
+#ifndef _FG_KR_87_HXX
+#define _FG_KR_87_HXX
+
+
+#include <Main/fg_props.hxx>
+
+#include <simgear/compiler.h>
+#include <simgear/structure/subsystem_mgr.hxx>
+#include <simgear/timing/timestamp.hxx>
+
+#include <Navaids/navlist.hxx>
+#include <Sound/morse.hxx>
+
+
+class FGKR_87 : public SGSubsystem
+{
+    FGMorse morse;
+
+    SGPropertyNode *lon_node;
+    SGPropertyNode *lat_node;
+    SGPropertyNode *alt_node;
+    SGPropertyNode *bus_power;
+    SGPropertyNode *serviceable;
+
+    bool need_update;
+
+    // internal values
+    string ident;
+    string trans_ident;
+    bool valid;
+    bool inrange;
+    double stn_lon;
+    double stn_lat;
+    double stn_elev;
+    double range;
+    double effective_range;
+    double dist;
+    double heading;
+    double x;
+    double y;
+    double z;
+    double goal_needle_deg;
+    double et_flash_time;
+
+    // modes
+    int ant_mode;               // 0 = ADF mode (needle active), 1 = ANT mode
+                                // (needle turned to 90, improved audio rcpt)
+    int stby_mode;              // 0 = show stby freq, 1 = show timer
+    int timer_mode;             // 0 = flt, 1 = et
+    int count_mode;             // 0 = count up, 1 = count down, 2 = set et
+                                // count down
+
+    // input and buttons
+    double rotation;            // compass faceplace rotation
+    bool power_btn;             // 0 = off, 1 = powered
+    bool audio_btn;             // 0 = off, 1 = on
+    double vol_btn;
+    bool adf_btn;               // 0 = normal, 1 = depressed
+    bool bfo_btn;               // 0 = normal, 1 = depressed
+    bool frq_btn;               // 0 = normal, 1 = depressed
+    bool last_frq_btn;
+    bool flt_et_btn;            // 0 = normal, 1 = depressed
+    bool last_flt_et_btn;
+    bool set_rst_btn;           // 0 = normal, 1 = depressed
+    bool last_set_rst_btn;      // 0 = normal, 1 = depressed
+
+    // outputs
+    int freq;
+    int stby_freq;
+    double needle_deg;
+    double flight_timer;
+    double elapsed_timer;
+    double tmp_timer;
+
+    // annunciators
+    bool ant_ann;
+    bool adf_ann;
+    bool bfo_ann;
+    bool frq_ann;
+    bool flt_ann;
+    bool et_ann;
+
+public:
+
+    FGKR_87( SGPropertyNode *node );
+    ~FGKR_87();
+
+    void init ();
+    void bind ();
+    void unbind ();
+    void update (double dt);
+
+    // Update nav/adf radios based on current postition
+    void search ();
+
+    // internal values
+    inline string get_ident() const { return ident; }
+    inline bool get_valid() const { return valid; }
+    inline bool get_inrange() const { return inrange; }
+    inline double get_stn_lon() const { return stn_lon; }
+    inline double get_stn_lat() const { return stn_lat; }
+    inline double get_dist() const { return dist; }
+    inline double get_heading() const { return heading; }
+    inline bool has_power() const {
+        return power_btn && (bus_power->getDoubleValue() > 1.0);
+    }
+
+    // modes
+    inline int get_ant_mode() const { return ant_mode; }
+    inline int get_stby_mode() const { return stby_mode; }
+    inline int get_timer_mode() const { return timer_mode; }
+    inline int get_count_mode() const { return count_mode; }
+
+    // input and buttons
+    inline double get_rotation () const { return rotation; }
+    inline void set_rotation( double rot ) { rotation = rot; }
+    inline bool get_power_btn() const { return power_btn; }
+    inline void set_power_btn( bool val ) {
+       power_btn = val;
+    }
+    inline bool get_audio_btn() const { return audio_btn; }
+    inline void set_audio_btn( bool val ) {
+       audio_btn = val;
+    }
+    inline double get_vol_btn() const { return vol_btn; }
+    inline void set_vol_btn( double val ) {
+       if ( val < 0.0 ) val = 0.0;
+       if ( val > 1.0 ) val = 1.0;
+       vol_btn = val;
+    }
+    inline bool get_adf_btn() const { return adf_btn; }
+    inline void set_adf_btn( bool val ) { adf_btn = val; }
+    inline bool get_bfo_btn() const { return bfo_btn; }
+    inline void set_bfo_btn( bool val ) { bfo_btn = val; }
+    inline bool get_frq_btn() const { return frq_btn; }
+    inline void set_frq_btn( bool val ) { frq_btn = val; }
+    inline bool get_flt_et_btn() const { return flt_et_btn; }
+    inline void set_flt_et_btn( bool val ) { flt_et_btn = val; }
+    inline bool get_set_rst_btn() const { return set_rst_btn; }
+    inline void set_set_rst_btn( bool val ) { set_rst_btn = val; }
+
+    // outputs
+    inline int get_freq () const { return freq; }
+    inline void set_freq( int f ) {
+       freq = f;
+        need_update = true;
+    }
+    int get_stby_freq () const;
+    inline void set_stby_freq( int f ) { stby_freq = f; }
+    inline double get_needle_deg() const { return needle_deg; }
+    inline double get_flight_timer() const { return flight_timer; }
+    inline double get_elapsed_timer() const { return elapsed_timer; }
+    inline void set_elapsed_timer( double val ) { elapsed_timer = val; }
+
+    // annunciators
+    inline bool get_ant_ann() const { return ant_ann; }
+    inline bool get_adf_ann() const { return adf_ann; }
+    inline bool get_bfo_ann() const { return bfo_ann; }
+    inline bool get_frq_ann() const { return frq_ann; }
+    inline bool get_flt_ann() const { return flt_ann; }
+    inline bool get_et_ann() const { return et_ann; }
+};
+
+
+#endif // _FG_KR_87_HXX