207 lines
6.2 KiB
C++
207 lines
6.2 KiB
C++
// kt-70.cxx -- class to impliment the King KT 70 panel-m transponder
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//
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// Written by Curtis Olson, started July 2002.
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//
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// Copyright (C) 2002 Curtis L. Olson - curt@flightgear.org
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation; either version 2 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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//
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// $Id$
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <stdio.h> // snprintf
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#include <simgear/compiler.h>
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#include <simgear/math/sg_random.h>
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#include <Aircraft/aircraft.hxx>
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#include "kt_70.hxx"
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// Constructor
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FGKT_70::FGKT_70() :
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lon_node(fgGetNode("/position/longitude-deg", true)),
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lat_node(fgGetNode("/position/latitude-deg", true)),
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alt_node(fgGetNode("/position/altitude-ft", true)),
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bus_power(fgGetNode("/systems/electrical/outputs/transponder", true)),
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r_flash_time(0.0),
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ident_mode(false),
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ident_btn(false),
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last_ident_btn(false),
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digit1(1), digit2(2), digit3(0), digit4(0),
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func_knob(4),
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id_code(1200),
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flight_level(0),
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fl_ann(0),
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alt_ann(0),
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gnd_ann(0),
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on_ann(0),
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sby_ann(0),
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reply_ann(0)
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{
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}
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// Destructor
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FGKT_70::~FGKT_70() { }
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void FGKT_70::init () {
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update(0); // FIXME: use dt
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}
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void FGKT_70::bind () {
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// internal values
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// modes
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// input and buttons
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fgTie("/radios/kt-70/inputs/ident-btn", this,
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&FGKT_70::get_ident_btn, &FGKT_70::set_ident_btn);
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fgSetArchivable("/radios/kt-70/inputs/rotation-deg");
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fgTie("/radios/kt-70/inputs/digit1", this,
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&FGKT_70::get_digit1, &FGKT_70::set_digit1);
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fgSetArchivable("/radios/kt-70/inputs/digit1");
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fgTie("/radios/kt-70/inputs/digit2", this,
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&FGKT_70::get_digit2, &FGKT_70::set_digit2);
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fgSetArchivable("/radios/kt-70/inputs/digit2");
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fgTie("/radios/kt-70/inputs/digit3", this,
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&FGKT_70::get_digit3, &FGKT_70::set_digit3);
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fgSetArchivable("/radios/kt-70/inputs/digit3");
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fgTie("/radios/kt-70/inputs/digit4", this,
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&FGKT_70::get_digit4, &FGKT_70::set_digit4);
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fgSetArchivable("/radios/kt-70/inputs/digit4");
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fgTie("/radios/kt-70/inputs/func-knob", this,
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&FGKT_70::get_func_knob, &FGKT_70::set_func_knob);
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fgSetArchivable("/radios/kt-70/inputs/func-knob");
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// outputs
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fgTie("/radios/kt-70/outputs/id-code", this,
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&FGKT_70::get_id_code, &FGKT_70::set_id_code);
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fgSetArchivable("/radios/kt-70/outputs/id-code");
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fgTie("/radios/kt-70/outputs/flight-level", this,
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&FGKT_70::get_flight_level);
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// annunciators
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fgTie("/radios/kt-70/annunciators/fl", this, &FGKT_70::get_fl_ann );
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fgTie("/radios/kt-70/annunciators/alt", this, &FGKT_70::get_alt_ann );
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fgTie("/radios/kt-70/annunciators/gnd", this, &FGKT_70::get_gnd_ann );
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fgTie("/radios/kt-70/annunciators/on", this, &FGKT_70::get_on_ann );
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fgTie("/radios/kt-70/annunciators/sby", this, &FGKT_70::get_sby_ann );
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fgTie("/radios/kt-70/annunciators/reply", this, &FGKT_70::get_reply_ann );
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}
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void FGKT_70::unbind () {
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// internal values
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// modes
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// input and buttons
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fgUntie("/radios/kt-70/inputs/ident-btn");
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fgUntie("/radios/kt-70/inputs/digit1");
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fgUntie("/radios/kt-70/inputs/digit2");
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fgUntie("/radios/kt-70/inputs/digit3");
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fgUntie("/radios/kt-70/inputs/digit4");
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fgUntie("/radios/kt-70/inputs/func-knob");
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// outputs
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fgUntie("/radios/kt-70/outputs/id-code");
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fgUntie("/radios/kt-70/outputs/flight-level");
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// annunciators
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fgUntie("/radios/kt-70/annunciators/fl");
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fgUntie("/radios/kt-70/annunciators/alt");
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fgUntie("/radios/kt-70/annunciators/gnd");
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fgUntie("/radios/kt-70/annunciators/on");
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fgUntie("/radios/kt-70/annunciators/sby");
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fgUntie("/radios/kt-70/annunciators/reply");
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}
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// Update the various nav values based on position and valid tuned in navs
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void FGKT_70::update( double dt ) {
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// start with all annunciators off (reply ann is handled
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// separately) and then turn on the ones we want
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fl_ann = false;
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alt_ann = false;
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gnd_ann = false;
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on_ann = false;
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sby_ann = false;
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reply_ann = false;
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if ( has_power() ) {
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// sanity checks
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if ( digit1 < 0 ) { digit1 = 0; }
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if ( digit1 > 7 ) { digit1 = 7; }
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if ( digit2 < 0 ) { digit2 = 0; }
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if ( digit2 > 7 ) { digit2 = 7; }
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if ( digit3 < 0 ) { digit3 = 0; }
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if ( digit3 > 7 ) { digit3 = 7; }
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if ( digit4 < 0 ) { digit4 = 0; }
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if ( digit4 > 7 ) { digit4 = 7; }
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id_code = digit1 * 1000 + digit2 * 100 + digit3 * 10 + digit4;
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// flight level computation
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// FIXME!!!! This needs to be computed relative to 29.92 inHg,
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// but for the moment, until I figure out how to do that, I'll
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// just use true altitude.
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flight_level = (int)( (alt_node->getDoubleValue() + 50.0) / 100.0);
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// ident button
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if ( ident_btn && !last_ident_btn ) {
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// ident button depressed
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r_flash_time = 0.0;
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ident_mode = true;
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}
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r_flash_time += dt;
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if ( r_flash_time > 18.0 ) {
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ident_mode = false;
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}
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if ( ident_mode ) {
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reply_ann = true;
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} else {
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reply_ann = false;
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}
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if ( func_knob == 1 ) {
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sby_ann = true;
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} else if ( func_knob == 2 ) {
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fl_ann = true;
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alt_ann = true;
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gnd_ann = true;
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on_ann = true;
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sby_ann = true;
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reply_ann = true;
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} else if ( func_knob == 3 ) {
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fl_ann = true;
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gnd_ann = true;
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} else if ( func_knob == 4 ) {
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on_ann = true;
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} else if ( func_knob == 5 ) {
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fl_ann = true;
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alt_ann = true;
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}
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}
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}
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