}
-TACAN::TACAN ( SGPropertyNode *node )
- : _last_distance_nm(0),
- _last_frequency_mhz(-1),
- _time_before_search_sec(0),
- _mobile_valid(false),
- _transmitter_valid(false),
- _transmitter_pos(SGGeod::fromDeg(0, 0)),
- _transmitter_range_nm(0),
- _transmitter_bias(0.0),
- name("tacan"),
- num(0)
-{
-
- int i;
- for ( i = 0; i < node->nChildren(); ++i ) {
- SGPropertyNode *child = node->getChild(i);
- string cname = child->getName();
- string cval = child->getStringValue();
- if ( cname == "name" ) {
- name = cval;
- } else if ( cname == "number" ) {
- num = child->getIntValue();
- } else {
- SG_LOG( SG_INSTR, SG_DEBUG, "Error in TACAN config logic" );
- if ( name.length() ) {
- SG_LOG( SG_INSTR, SG_DEBUG, "Section = " << name );
- }
- }
- }
-}
-
-TACAN::TACAN ()
- : _last_distance_nm(0),
- _last_frequency_mhz(-1),
- _time_before_search_sec(0),
- _mobile_valid(false),
- _transmitter_valid(false),
- _transmitter_pos(SGGeod::fromDeg(0, 0)),
- _transmitter_range_nm(0),
- _transmitter_bearing_deg(0),
- _transmitter_bias(0.0),
- _transmitter_name(""),
- name("tacan")
+TACAN::TACAN ( SGPropertyNode *node ) :
+ _name(node->getStringValue("name", "tacan")),
+ _num(node->getIntValue("number", 0)),
+ _new_frequency(false),
+ _channel("0000"),
+ _last_distance_nm(0),
+ _frequency_mhz(-1),
+ _time_before_search_sec(0),
+ _mobile_valid(false),
+ _transmitter_valid(false),
+ _transmitter_pos(SGGeod::fromDeg(0, 0)),
+ _transmitter_range_nm(0),
+ _transmitter_bias(0.0),
+ _mobile_lat(0.0),
+ _mobile_lon(0.0),
+ _listener_active(0)
{
}
TACAN::init ()
{
string branch;
- branch = "/instrumentation/" + name;
+ branch = "/instrumentation/" + _name;
- SGPropertyNode *node = fgGetNode(branch.c_str(), num, true );
+ SGPropertyNode *node = fgGetNode(branch.c_str(), _num, true );
- _longitude_node = fgGetNode("/position/longitude-deg", true);
- _latitude_node = fgGetNode("/position/latitude-deg", true);
- _altitude_node = fgGetNode("/position/altitude-ft", true);
- _heading_node = fgGetNode("/orientation/heading-deg", true);
- _yaw_node = fgGetNode("/orientation/side-slip-deg", true);
_serviceable_node = node->getChild("serviceable", 0, true);
- _electrical_node = fgGetNode("/systems/electrical/outputs/tacan", true);
_ident_node = node->getChild("ident", 0, true);
+
SGPropertyNode *fnode = node->getChild("frequencies", 0, true);
- _source_node = fnode->getChild("source", 0, true);
_frequency_node = fnode->getChild("selected-mhz", 0, true);
- _channel_node = fnode->getChild("selected-channel", 1, true);
- _channel_node = fnode->getChild("selected-channel", 2, true);
- _channel_node = fnode->getChild("selected-channel", 3, true);
- _channel_node = fnode->getChild("selected-channel", 4, true);
+
+ _channel_in0_node = fnode->getChild("selected-channel", 0, true);
+ _channel_in1_node = fnode->getChild("selected-channel", 1, true);
+ _channel_in2_node = fnode->getChild("selected-channel", 2, true);
+ _channel_in3_node = fnode->getChild("selected-channel", 3, true);
+ _channel_in4_node = fnode->getChild("selected-channel", 4, true);
+
+ _channel_in0_node->addChangeListener(this);
+ _channel_in1_node->addChangeListener(this);
+ _channel_in2_node->addChangeListener(this);
+ _channel_in3_node->addChangeListener(this);
+ _channel_in4_node->addChangeListener(this, true);
+
_in_range_node = node->getChild("in-range", 0, true);
_distance_node = node->getChild("indicated-distance-nm", 0, true);
_speed_node = node->getChild("indicated-ground-speed-kt", 0, true);
_time_node = node->getChild("indicated-time-min", 0, true);
_name_node = node->getChild("name", 0, true);
_bearing_node = node->getChild("indicated-bearing-true-deg", 0, true);
+
SGPropertyNode *dnode = node->getChild("display", 0, true);
_x_shift_node = dnode->getChild("x-shift", 0, true);
_y_shift_node = dnode->getChild("y-shift", 0, true);
_rotation_node = dnode->getChild("rotation", 0, true);
_channel_node = dnode->getChild("channel", 0, true);
- SGPropertyNode *cnode = fgGetNode("/ai/models/carrier", num, false );
- if (cnode)
- _carrier_name_node = cnode->getChild("name", 0, false);
+ SGPropertyNode *cnode = fgGetNode("/ai/models/carrier", _num, false );
+ _carrier_name_node = cnode ? cnode->getChild("name", 0, false) : 0;
+
+ SGPropertyNode *tnode = fgGetNode("/ai/models/aircraft", _num, false);
+ _tanker_callsign_node = tnode ? tnode->getChild("callsign", 0, false) : 0;
- SGPropertyNode *tnode = fgGetNode("/ai/models/aircraft", num, false);
- if (tnode)
- _tanker_callsign_node = tnode->getChild("callsign", 0, false);
+ SGPropertyNode *mnode = fgGetNode("/ai/models/multiplayer", _num, false);
+ _mp_callsign_node = mnode ? mnode->getChild("callsign", 0, false) : 0;
- SGPropertyNode *mnode = fgGetNode("/ai/models/multiplayer", num, false);
- if (mnode)
- _mp_callsign_node = mnode->getChild("callsign", 0, false);
+ _longitude_node = fgGetNode("/position/longitude-deg", true);
+ _latitude_node = fgGetNode("/position/latitude-deg", true);
+ _altitude_node = fgGetNode("/position/altitude-ft", true);
+ _heading_node = fgGetNode("/orientation/heading-deg", true);
+ _yaw_node = fgGetNode("/orientation/side-slip-deg", true);
+ _electrical_node = fgGetNode("/systems/electrical/outputs/tacan", true);
}
void
TACAN::update (double delta_time_sec)
{
- double az2 = 0;
- double bearing = 0;
- double distance = 0;
- double mobile_az2 = 0;
- double mobile_bearing = 0;
- double mobile_distance = 0;
- double frequency_mhz = 0;
-
- string _channel, _last_channel, _channel_1, _channel_2,_channel_3, _channel_4;
-
- // If it's off, don't waste any time.
if (!_serviceable_node->getBoolValue() || !_electrical_node->getBoolValue()) {
_last_distance_nm = 0;
_in_range_node->setBoolValue(false);
return;
}
- // Figure out the source
- const char * source = _source_node->getStringValue();
-
- if (source[0] == '\0') {
- string branch;
- branch = "/instrumentation/" + name + "/frequencies/selected-channel";
- _source_node->setStringValue(branch.c_str());
- source = _source_node->getStringValue();
- SG_LOG( SG_INSTR, SG_DEBUG, "source " << source );
- }
- // Get the channel
- _channel_1 = fgGetString("/instrumentation/tacan/frequencies/selected-channel[1]");
- _channel_2 = fgGetString("/instrumentation/tacan/frequencies/selected-channel[2]");
- _channel_3 = fgGetString("/instrumentation/tacan/frequencies/selected-channel[3]");
- _channel_4 = fgGetString("/instrumentation/tacan/frequencies/selected-channel[4]");
-
- SG_LOG( SG_INSTR, SG_DEBUG, "channels " << _channel_1 << _channel_2 << _channel_3 << _channel_4);
-
- _channel = _channel_1 + _channel_2 + _channel_3 + _channel_4;
-
- // Get the frequency
- if (_channel != _last_channel) {
- _time_before_search_sec = 0;
- _last_channel = _channel;
- frequency_mhz = searchChannel(_channel);
- SG_LOG( SG_INSTR, SG_DEBUG, "frequency " << frequency_mhz );
- _frequency_node->setDoubleValue(frequency_mhz);
- }
-
- SG_LOG( SG_INSTR, SG_DEBUG, "channel " << _channel );
// Get the aircraft position
double longitude_deg = _longitude_node->getDoubleValue();
double latitude_deg = _latitude_node->getDoubleValue();
double altitude_m = _altitude_node->getDoubleValue() * SG_FEET_TO_METER;
- double heading = _heading_node->getDoubleValue() ;
- double yaw = _yaw_node->getDoubleValue() ;
double longitude_rad = longitude_deg * SGD_DEGREES_TO_RADIANS;
double latitude_rad = latitude_deg * SGD_DEGREES_TO_RADIANS;
// On timeout, scan again
_time_before_search_sec -= delta_time_sec;
- if (_time_before_search_sec < 0 && frequency_mhz >= 0)
- search(frequency_mhz, longitude_rad, latitude_rad, altitude_m);
+ if ((_time_before_search_sec < 0 || _new_frequency) && _frequency_mhz >= 0)
+ search(_frequency_mhz, longitude_rad, latitude_rad, altitude_m);
// Calculate the distance to the transmitter
//calculate the bearing and range of the mobile from the aircraft
- SG_LOG( SG_INSTR, SG_DEBUG, "carrier_lat " << _mobile_lat);
- SG_LOG( SG_INSTR, SG_DEBUG, "carrier_lon " << _mobile_lon);
- SG_LOG( SG_INSTR, SG_DEBUG, "carrier_name " << _mobile_name);
- SG_LOG( SG_INSTR, SG_DEBUG, "carrier_valid " << _mobile_valid);
+ double mobile_az2 = 0;
+ double mobile_bearing = 0;
+ double mobile_distance = 0;
+
+ SG_LOG( SG_INSTR, SG_DEBUG, "mobile_lat " << _mobile_lat);
+ SG_LOG( SG_INSTR, SG_DEBUG, "mobile_lon " << _mobile_lon);
+ SG_LOG( SG_INSTR, SG_DEBUG, "mobile_name " << _mobile_name);
+ SG_LOG( SG_INSTR, SG_DEBUG, "mobile_valid " << _mobile_valid);
geo_inverse_wgs_84(altitude_m,
latitude_deg,
longitude_deg,
_mobile_lon,
&mobile_bearing, &mobile_az2, &mobile_distance);
+
//calculate the bearing and range of the station from the aircraft
+ double az2 = 0;
+ double bearing = 0;
+ double distance = 0;
+
SGGeod pos = SGGeod::fromDegM(longitude_deg, latitude_deg, altitude_m);
geo_inverse_wgs_84(pos, _transmitter_pos,
&bearing, &az2, &distance);
double horiz_offset = bearing;
- SG_LOG( SG_INSTR, SG_DEBUG, "distance_nm " << distance_nm << " bearing "
+ SG_LOG( SG_INSTR, SG_DEBUG, "distance_nm " << distance_nm << " bearing "
<< bearing << " horiz_offset " << horiz_offset);
// calculate values for radar display
double latitude_rad, double altitude_m)
{
int number, i;
- bool freq_valid = false;
+ _mobile_valid = false;
SG_LOG( SG_INSTR, SG_DEBUG, "tacan freq " << frequency_mhz );
//try any carriers first
FGNavRecord *mobile_tacan
= globals->get_carrierlist()->findStationByFreq( frequency_mhz );
- freq_valid = (mobile_tacan != NULL);
- SG_LOG( SG_INSTR, SG_DEBUG, "mobile freqency valid " << freq_valid );
+ bool freq_valid = (mobile_tacan != NULL);
+ SG_LOG( SG_INSTR, SG_DEBUG, "mobile freqency valid " << freq_valid );
if ( freq_valid ) {
number = carrier.size();
SG_LOG( SG_INSTR, SG_DEBUG, "carrier " << number );
-
- for ( i = 0; i < number; ++i ) {
- string str2 ( carrier[i]->getStringValue("name", ""));
- SG_LOG( SG_INSTR, SG_DEBUG, "carrier name " << str2 );
-
- SG_LOG( SG_INSTR, SG_DEBUG, "strings 1 " << str1 << " 2 " << str2 );
- unsigned int loc1= str1.find( str2, 0 );
- if ( loc1 != string::npos && str2 != "" ) {
- SG_LOG( SG_INSTR, SG_DEBUG, " string found" );
- _mobile_lat = carrier[i]->getDoubleValue("position/latitude-deg");
- _mobile_lon = carrier[i]->getDoubleValue("position/longitude-deg");
- _mobile_elevation_ft = mobile_tacan->get_elev_ft();
- _mobile_range_nm = mobile_tacan->get_range();
- _mobile_bias = mobile_tacan->get_multiuse();
- _mobile_name = mobile_tacan->get_name();
- _mobile_ident = mobile_tacan->get_trans_ident();
- _mobile_valid = true;
- SG_LOG( SG_INSTR, SG_DEBUG, " carrier transmitter valid " << _mobile_valid );
- break;
- } else {
- _mobile_valid = false;
- SG_LOG( SG_INSTR, SG_DEBUG, " carrier transmitter invalid " << _mobile_valid );
+ if ( number > 0 ) { // don't do this if there are no carriers
+ for ( i = 0; i < number; ++i ) {
+ string str2 ( carrier[i]->getStringValue("name", ""));
+ SG_LOG( SG_INSTR, SG_DEBUG, "carrier name " << str2 );
+
+ SG_LOG( SG_INSTR, SG_DEBUG, "strings 1 " << str1 << " 2 " << str2 );
+ string::size_type loc1= str1.find( str2, 0 );
+ if ( loc1 != string::npos && str2 != "" ) {
+ SG_LOG( SG_INSTR, SG_DEBUG, " string found" );
+ _mobile_lat = carrier[i]->getDoubleValue("position/latitude-deg");
+ _mobile_lon = carrier[i]->getDoubleValue("position/longitude-deg");
+ _mobile_elevation_ft = mobile_tacan->get_elev_ft();
+ _mobile_range_nm = mobile_tacan->get_range();
+ _mobile_bias = mobile_tacan->get_multiuse();
+ _mobile_name = mobile_tacan->get_name();
+ _mobile_ident = mobile_tacan->get_trans_ident();
+ _mobile_valid = true;
+ SG_LOG( SG_INSTR, SG_DEBUG, " carrier transmitter valid " << _mobile_valid );
+ break;
+ } else {
+ _mobile_valid = false;
+ SG_LOG( SG_INSTR, SG_DEBUG, " carrier transmitter invalid " << _mobile_valid );
+ }
}
}
//try any AI tankers second
if ( !_mobile_valid) {
- SG_LOG( SG_INSTR, SG_DEBUG, "tanker transmitter valid start " << _mobile_valid );
+ SG_LOG( SG_INSTR, SG_DEBUG, "tanker transmitter valid start " << _mobile_valid );
SGPropertyNode * branch = fgGetNode("ai/models", true);
- vector<SGPropertyNode_ptr> tanker = branch->getChildren("aircraft");
+ vector<SGPropertyNode_ptr> tanker = branch->getChildren("tanker");
number = tanker.size();
SG_LOG( SG_INSTR, SG_DEBUG, "tanker number " << number );
- for ( i = 0; i < number; ++i ) {
- string str4 ( tanker[i]->getStringValue("callsign", ""));
- SG_LOG( SG_INSTR, SG_DEBUG, "tanker callsign " << str4 );
-
- SG_LOG( SG_INSTR, SG_DEBUG, "strings 1 " << str1 << " 4 " << str4 );
- unsigned int loc1= str1.find( str4, 0 );
- if ( loc1 != string::npos && str4 != "" ) {
- SG_LOG( SG_INSTR, SG_DEBUG, " string found" );
- _mobile_lat = tanker[i]->getDoubleValue("position/latitude-deg");
- _mobile_lon = tanker[i]->getDoubleValue("position/longitude-deg");
- _mobile_elevation_ft = tanker[i]->getDoubleValue("position/altitude-ft");
- _mobile_range_nm = mobile_tacan->get_range();
- _mobile_bias = mobile_tacan->get_multiuse();
- _mobile_name = mobile_tacan->get_name();
- _mobile_ident = mobile_tacan->get_trans_ident();
- _mobile_valid = true;
- SG_LOG( SG_INSTR, SG_DEBUG, " tanker transmitter valid " << _mobile_valid );
- break;
- } else {
- _mobile_valid = false;
- SG_LOG( SG_INSTR, SG_DEBUG, " tanker transmitter invalid " << _mobile_valid );
+ if ( number > 0 ) { // don't do this if there are no AI aircraft
+ for ( i = 0; i < number; ++i ) {
+ string str4 ( tanker[i]->getStringValue("callsign", ""));
+ SG_LOG( SG_INSTR, SG_DEBUG, "tanker callsign " << str4 );
+
+ SG_LOG( SG_INSTR, SG_DEBUG, "strings 1 " << str1 << " 4 " << str4 );
+ string::size_type loc1= str1.find( str4, 0 );
+ if ( loc1 != string::npos && str4 != "" ) {
+ SG_LOG( SG_INSTR, SG_DEBUG, " string found" );
+ _mobile_lat = tanker[i]->getDoubleValue("position/latitude-deg");
+ _mobile_lon = tanker[i]->getDoubleValue("position/longitude-deg");
+ _mobile_elevation_ft = tanker[i]->getDoubleValue("position/altitude-ft");
+ _mobile_range_nm = mobile_tacan->get_range();
+ _mobile_bias = mobile_tacan->get_multiuse();
+ _mobile_name = mobile_tacan->get_name();
+ _mobile_ident = mobile_tacan->get_trans_ident();
+ _mobile_valid = true;
+ SG_LOG( SG_INSTR, SG_DEBUG, " tanker transmitter valid " << _mobile_valid );
+ break;
+ } else {
+ _mobile_valid = false;
+ SG_LOG( SG_INSTR, SG_DEBUG, " tanker transmitter invalid " << _mobile_valid );
+ }
}
}
//try any mp tankers third, if we haven't found the tanker in the ai aircraft
if ( !_mobile_valid ) {
- SG_LOG( SG_INSTR, SG_DEBUG, " mp tanker transmitter valid start " << _mobile_valid );
+ SG_LOG( SG_INSTR, SG_DEBUG, " mp tanker transmitter valid start " << _mobile_valid );
SGPropertyNode * branch = fgGetNode("ai/models", true);
vector<SGPropertyNode_ptr> mp_tanker = branch->getChildren("multiplayer");
SG_LOG( SG_INSTR, SG_DEBUG, " mp tanker number " << number );
- for ( i = 0; i < number; ++i ) {
- string str6 ( mp_tanker[i]->getStringValue("callsign", ""));
- SG_LOG( SG_INSTR, SG_DEBUG, "mp tanker callsign " << str6 );
-
- SG_LOG( SG_INSTR, SG_DEBUG, "strings 1 " << str1 << " 5 " << str6 );
- unsigned int loc1= str1.find( str6, 0 );
- if ( loc1 != string::npos && str6 != "" ) {
- SG_LOG( SG_INSTR, SG_DEBUG, " string found" );
- _mobile_lat = mp_tanker[i]->getDoubleValue("position/latitude-deg");
- _mobile_lon = mp_tanker[i]->getDoubleValue("position/longitude-deg");
- _mobile_elevation_ft = mp_tanker[i]->getDoubleValue("position/altitude-ft");
- _mobile_range_nm = mobile_tacan->get_range();
- _mobile_bias = mobile_tacan->get_multiuse();
- _mobile_name = mobile_tacan->get_name();
- _mobile_ident = mobile_tacan->get_trans_ident();
- _mobile_valid = true;
-
- SG_LOG( SG_INSTR, SG_DEBUG, " mp tanker transmitter valid " << _mobile_valid );
- SG_LOG( SG_INSTR, SG_DEBUG, " mp_tanker name " << _mobile_name);
- SG_LOG( SG_INSTR, SG_DEBUG, " mp lat " << _mobile_lat << "lon " << _mobile_lon);
- SG_LOG( SG_INSTR, SG_DEBUG, " mp elev " << _mobile_elevation_ft);
- SG_LOG( SG_INSTR, SG_DEBUG, " mp range " << _mobile_range_nm);
- break;
- } else {
- _mobile_valid = false;
- SG_LOG( SG_INSTR, SG_DEBUG, " mp tanker transmitter invalid " << _mobile_valid );
+ if ( number > 0 ) { // don't do this if there are no MP aircraft
+ for ( i = 0; i < number; ++i ) {
+ string str6 ( mp_tanker[i]->getStringValue("callsign", ""));
+ SG_LOG( SG_INSTR, SG_DEBUG, "mp tanker callsign " << str6 );
+
+ SG_LOG( SG_INSTR, SG_DEBUG, "strings 1 " << str1 << " 5 " << str6 );
+ string::size_type loc1= str1.find( str6, 0 );
+ if ( loc1 != string::npos && str6 != "" ) {
+ SG_LOG( SG_INSTR, SG_DEBUG, " string found" );
+ _mobile_lat = mp_tanker[i]->getDoubleValue("position/latitude-deg");
+ _mobile_lon = mp_tanker[i]->getDoubleValue("position/longitude-deg");
+ _mobile_elevation_ft = mp_tanker[i]->getDoubleValue("position/altitude-ft");
+ _mobile_range_nm = mobile_tacan->get_range();
+ _mobile_bias = mobile_tacan->get_multiuse();
+ _mobile_name = mobile_tacan->get_name();
+ _mobile_ident = mobile_tacan->get_trans_ident();
+ _mobile_valid = true;
+
+ SG_LOG( SG_INSTR, SG_DEBUG, " mp tanker transmitter valid " << _mobile_valid );
+ SG_LOG( SG_INSTR, SG_DEBUG, " mp tanker name " << _mobile_name);
+ SG_LOG( SG_INSTR, SG_DEBUG, " mp lat " << _mobile_lat << "lon " << _mobile_lon);
+ SG_LOG( SG_INSTR, SG_DEBUG, " mp elev " << _mobile_elevation_ft);
+ SG_LOG( SG_INSTR, SG_DEBUG, " mp range " << _mobile_range_nm);
+ break;
+ } else {
+ _mobile_valid = false;
+ SG_LOG( SG_INSTR, SG_DEBUG, " mp tanker transmitter invalid " << _mobile_valid );
+ }
}
}
}
} else {
_mobile_valid = false;
- SG_LOG( SG_INSTR, SG_DEBUG, " mobile transmitter invalid " << _mobile_valid );
+ SG_LOG( SG_INSTR, SG_DEBUG, " mobile transmitter invalid " << _mobile_valid );
}
// try the TACAN/VORTAC list next
_transmitter_valid = (tacan != NULL);
if ( _transmitter_valid ) {
- SG_LOG( SG_INSTR, SG_DEBUG, "transmitter valid " << _transmitter_valid );
+ SG_LOG( SG_INSTR, SG_DEBUG, "transmitter valid " << _transmitter_valid );
_transmitter_pos = tacan->get_pos();
_transmitter_range_nm = tacan->get_range();
SG_LOG( SG_INSTR, SG_DEBUG, _transmitter_pos);
} else {
- SG_LOG( SG_INSTR, SG_DEBUG, "transmitter invalid " << _transmitter_valid );
+ SG_LOG( SG_INSTR, SG_DEBUG, "transmitter invalid " << _transmitter_valid );
}
}
double
-TACAN::searchChannel (const string& _channel){
-
+TACAN::searchChannel (const string& channel)
+{
double frequency_khz = 0;
FGTACANRecord *freq
- = globals->get_channellist()->findByChannel( _channel );
- double _freq_valid = (freq != NULL);
- SG_LOG( SG_INSTR, SG_DEBUG, "freq valid " << _freq_valid );
+ = globals->get_channellist()->findByChannel( channel );
+ bool _freq_valid = (freq != NULL);
+ SG_LOG( SG_INSTR, SG_DEBUG, "freq valid " << _freq_valid );
if ( _freq_valid ) {
frequency_khz = freq->get_freq();
- SG_LOG( SG_INSTR, SG_DEBUG, "freq output " << frequency_khz );
+ SG_LOG( SG_INSTR, SG_DEBUG, "freq output " << frequency_khz );
//check sanity
- if (frequency_khz >=9620 && frequency_khz <= 121300)
+ if (frequency_khz >= 9620 && frequency_khz <= 121300)
return frequency_khz/100;
}
return frequency_khz = 0;
} // end TACAN::searchChannel
+/*
+ * Listener callback. Maintains channel input properties,
+ * searches new channel frequency, updates _channel and
+ * _frequency and sets boolean _new_frequency appropriately.
+ */
+void
+TACAN::valueChanged(SGPropertyNode *prop)
+{
+ if (_listener_active)
+ return;
+ _listener_active++;
+
+ int index = prop->getIndex();
+ string channel = _channel;
+
+ if (index) { // channel digit or X/Y input
+ int c;
+ if (isdigit(c = _channel_in1_node->getStringValue()[0]))
+ channel[0] = c;
+ if (isdigit(c = _channel_in2_node->getStringValue()[0]))
+ channel[1] = c;
+ if (isdigit(c = _channel_in3_node->getStringValue()[0]))
+ channel[2] = c;
+ c = _channel_in4_node->getStringValue()[0];
+ if (c == 'X' || c == 'Y')
+ channel[3] = c;
+
+ } else { // channel number input
+ unsigned int f = prop->getIntValue();
+ if (f >= 1 && f <= 126) {
+ channel[0] = '0' + (f / 100) % 10;
+ channel[1] = '0' + (f / 10) % 10;
+ channel[2] = '0' + f % 10;
+ }
+ }
+
+ if (channel != _channel) {
+ SG_LOG(SG_INSTR, SG_DEBUG, "new channel " << channel);
+
+ // write back result
+ _channel_in0_node->setIntValue((channel[0] - '0') * 100
+ + (channel[1] - '0') * 10 + (channel[2] - '0'));
+ char s[2] = "0";
+ s[0] = channel[0], _channel_in1_node->setStringValue(s);
+ s[0] = channel[1], _channel_in2_node->setStringValue(s);
+ s[0] = channel[2], _channel_in3_node->setStringValue(s);
+ s[0] = channel[3], _channel_in4_node->setStringValue(s);
+
+ // search channel frequency
+ double freq = searchChannel(channel);
+ if (freq != _frequency_mhz) {
+ SG_LOG(SG_INSTR, SG_DEBUG, "new frequency " << freq);
+ _frequency_node->setDoubleValue(freq);
+ _frequency_mhz = freq;
+ _new_frequency = true;
+ }
+
+ _channel = channel;
+ _time_before_search_sec = 0;
+ }
+
+ _listener_active--;
+}
+
// end of TACAN.cxx