src/Network/opengc.cxx

   1 // opengc.cxx - Network interface program to send data to display processor over LAN
   2 //
   3 // Created by:  J. Wojnaroski  -- castle@mminternet.com
   4 // Date:                21 Nov 2001
   5 //
   6 // Extended from original network code developed by C. Olson
   7 //
   8 //  Modified 12/02/01 - Update engine structure for multi-engine models
   9 //                        - Added data preamble to id msg types
  10 //
  11 //  Modified 01/23/02 - Converted portions of the Engine and Gear accesssors to properties
  12 //                          - Removed data from navigation functions. OpenGC provides own nav functions
  13 //
  14 //  Modified 03/05/03 - Modified to reduce need to search property tree for each node per frame
  15 //
  16 // This program is free software; you can redistribute it and/or
  17 // modify it under the terms of the GNU General Public License as
  18 // published by the Free Software Foundation; either version 2 of the
  19 // License, or (at your option) any later version.
  20 //
  21 // This program is distributed in the hope that it will be useful, but
  22 // WITHOUT ANY WARRANTY; without even the implied warranty of
  23 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  24 // General Public License for more details.
  25 //
  26 // You should have received a copy of the GNU General Public License
  27 // along with this program; if not, write to the Free Software
  28 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  29 //
  30
  31 #include <simgear/debug/logstream.hxx>
  32 #include <simgear/io/iochannel.hxx>
  33
  34 #include <vector>
  35
  36 #include "opengc.hxx"
  37 #include <FDM/flight.hxx>
  38 #include <Main/globals.hxx>
  39 #include <Main/fg_props.hxx>
  40
  41 SG_USING_STD(vector);
  42
  43 FGOpenGC::FGOpenGC() :
  44         press_node(fgGetNode("/environment/pressure-inhg[0]", true)),
  45         temp_node(fgGetNode("/environment/temperature-degc[0]", true)),
  46         wind_dir_node(fgGetNode("/environment/wind-from-heading-deg[0]", true)),
  47         wind_speed_node(fgGetNode("/environment/wind-speed-kt[0]", true)),
  48         magvar_node(fgGetNode("/environment/magnetic-variation-deg[0]", true)),
  49         p_left_aileron(fgGetNode("surface-positions/left-aileron-pos-norm", true)),
  50         p_right_aileron(fgGetNode("surface-positions/right-aileron-pos-norm", true)),
  51         p_elevator(fgGetNode("surface-positions/elevator-pos-norm", true)),
  52         p_elevator_trim(fgGetNode("surface-positions/elevator_trim-pos-norm", true)),
  53         p_rudder(fgGetNode("surface-positions/rudder-pos-norm", true)),
  54         p_flaps(fgGetNode("surface-positions/flap-pos-norm", true)),
  55         p_flaps_cmd(fgGetNode("/controls/flight/flaps", true)),
  56         p_alphadot(fgGetNode("/fdm/jsbsim/aero/alphadot-rad_sec[0]", true)),
  57         p_betadot(fgGetNode("/fdm/jsbsim/aero/betadot-rad_sec[0]", true)),
  58         p_latitude(fgGetNode("/position/latitude-deg", true)),
  59         p_longitude(fgGetNode("/position/longitude-deg", true)),
  60         p_elev_node(fgGetNode("/position/altitude-ft", true)),
  61         p_altitude_agl(fgGetNode("/position/altitude-agl-ft", true)),
  62         vel_kcas(fgGetNode("/velocities/airspeed-kt[0]", true)),
  63         p_vvi(fgGetNode("/velocities/vertical-speed-fps[0]", true )),
  64         p_mach(fgGetNode("/velocities/mach[0]", true )),
  65         egt0_node(fgGetNode("/engines/engine/EGT_degC[0]", true)),
  66         egt1_node(fgGetNode("/engines/engine[1]/EGT_degC[0]", true)),
  67         egt2_node(fgGetNode("/engines/engine[2]/EGT_degC[0]", true)),
  68         egt3_node(fgGetNode("/engines/engine[3]/EGT_degC[0]", true)),
  69         epr0_node(fgGetNode("/engines/engine/EPR[0]", true)),
  70         epr1_node(fgGetNode("/engines/engine[1]/EPR[0]", true)),
  71         epr2_node(fgGetNode("/engines/engine[2]/EPR[0]", true)),
  72         epr3_node(fgGetNode("/engines/engine[3]/EPR[0]", true)),
  73         n10_node(fgGetNode("/engines/engine/N1[0]", true)),
  74         n11_node(fgGetNode("/engines/engine[1]/N1[0]", true)),
  75         n12_node(fgGetNode("/engines/engine[2]/N1[0]", true)),
  76         n13_node(fgGetNode("/engines/engine[3]/N1[0]", true)),
  77         n20_node(fgGetNode("/engines/engine/N2[0]", true)),
  78         n21_node(fgGetNode("/engines/engine[1]/N2[0]", true)),
  79         n22_node(fgGetNode("/engines/engine[2]/N2[0]", true)),
  80         n23_node(fgGetNode("/engines/engine[3]/N2[0]", true)),
  81         oil_temp0(fgGetNode("engines/engine/oil-temp-degF[0]", true)),
  82         oil_temp1(fgGetNode("engines/engine[1]/oil-temp-degF[0]", true)),
  83         oil_temp2(fgGetNode("engines/engine[2]/oil-temp-degF[0]", true)),
  84         oil_temp3(fgGetNode("engines/engine[3]/oil-temp-degF[0]", true)),
  85         tank0_node(fgGetNode("/consumables/fuel/tank/level-lb[0]", true)),
  86         tank1_node(fgGetNode("/consumables/fuel/tank[1]/level-lb[0]", true)),
  87         tank2_node(fgGetNode("/consumables/fuel/tank[2]/level-lb[0]", true)),
  88         tank3_node(fgGetNode("/consumables/fuel/tank[3]/level-lb[0]", true)),
  89         tank4_node(fgGetNode("/consumables/fuel/tank[4]/level-lb[0]", true)),
  90         tank5_node(fgGetNode("/consumables/fuel/tank[5]/level-lb[0]", true)),
  91         tank6_node(fgGetNode("/consumables/fuel/tank[6]/level-lb[0]", true)),
  92         tank7_node(fgGetNode("/consumables/fuel/tank[7]/level-lb[0]", true)),
  93         p_park_brake(fgGetNode("/controls/gear/brake-parking", true)),
  94         p_pitch(fgGetNode("/orientation/pitch-deg[0]", true)),
  95         p_bank(fgGetNode("/orientation/roll-deg[0]", true)),
  96         p_heading(fgGetNode("/orientation/heading-magnetic-deg[0]", true)),
  97         p_yaw(fgGetNode("/fdm/jsbsim/aero/beta-rad[0]", true)),
  98         p_yaw_rate(fgGetNode("/fdm/jsbsim/aero/betadot-rad_sec[0]", true))
  99
 100 {
 101 }
 102
 103 FGOpenGC::~FGOpenGC() {
 104 }
 105
 106 // open hailing frequencies
 107 bool FGOpenGC::open() {
 108     if ( is_enabled() ) {
 109         SG_LOG( SG_IO, SG_ALERT, "This shouldn't happen, but the channel "
 110                 << "is already in use, ignoring" );
 111         return false;
 112     }
 113
 114     SGIOChannel *io = get_io_channel();
 115
 116     if ( ! io->open( get_direction() ) ) {
 117         SG_LOG( SG_IO, SG_ALERT, "Error opening channel communication layer." );
 118         return false;
 119     }
 120
 121     set_enabled( true );
 122
 123     return true;
 124 }
 125
 126 //static void collect_data( const FGInterface *fdm, ogcFGData *data ) {
 127 void FGOpenGC::collect_data( const FGInterface *fdm, ogcFGData *data ) {
 128
 129     data->version_id = OGC_VERSION;
 130
 131     data->longitude = p_longitude->getDoubleValue();
 132     data->latitude = p_latitude->getDoubleValue();
 133     data->elevation = p_elev_node->getDoubleValue();
 134     data->magvar = magvar_node->getDoubleValue();
 135
 136     data->pitch = p_pitch->getDoubleValue();
 137     data->bank = p_bank->getDoubleValue();
 138     data->heading = p_heading->getDoubleValue();
 139     //data->altitude = p_altitude->getDoubleValue();
 140     data->altitude_agl = p_altitude_agl->getDoubleValue();
 141
 142     data->vvi = p_vvi->getDoubleValue();
 143     data->mach = p_mach->getDoubleValue();
 144     data->groundspeed = cur_fdm_state->get_V_ground_speed();
 145     data->v_keas = cur_fdm_state->get_V_equiv_kts();
 146     data->v_kcas = vel_kcas->getDoubleValue();
 147
 148
 149     data->phi_dot = cur_fdm_state->get_Phi_dot();
 150     data->theta_dot = cur_fdm_state->get_Theta_dot();
 151     data->psi_dot = cur_fdm_state->get_Psi_dot();
 152
 153     data->alpha = cur_fdm_state->get_Alpha();
 154     data->beta = p_yaw->getDoubleValue();
 155     data->alpha_dot = p_alphadot->getDoubleValue();
 156     data->beta_dot = p_yaw_rate->getDoubleValue();
 157
 158   //data->rudder_trim = p_Controls->get_rudder_trim();
 159     data->parking_brake = p_park_brake->getDoubleValue();
 160
 161     data->left_aileron = p_left_aileron->getDoubleValue();
 162     data->right_aileron = p_right_aileron->getDoubleValue();
 163     data->elevator = p_elevator->getDoubleValue();
 164     data->elevator_trim = p_elevator_trim->getDoubleValue();
 165     data->rudder = p_rudder->getDoubleValue();
 166     data->flaps = p_flaps->getDoubleValue();
 167     data->flaps_cmd = p_flaps_cmd->getDoubleValue();
 168
 169     data->gear_nose = fgGetDouble("gear/gear[0]/position-norm[0]");
 170     data->gear_left = fgGetDouble("gear/gear[1]/position-norm[0]");
 171     data->gear_right = fgGetDouble("gear/gear[2]/position-norm[0]");
 172           data->gear_left_rear = fgGetDouble("gear/gear[3]/position-norm[0]");
 173           data->gear_right_rear = fgGetDouble("gear/gear[4]/position-norm[0]");
 174           data->parking_brake = p_park_brake->getDoubleValue();
 175           data->wow_main = fgGetBool("gear/gear[1]/wow[0]") && fgGetBool("gear/gear[2]/wow[0]");
 176           data->wow_nose = fgGetBool("gear/gear[0]/wow[0]");
 177           //cout << "Nose " << data->wow_nose << " Main " << wow_main << endl;
 178
 179     //data->rpm[0] = fgGetDouble("/engines/engine[0]/rpm");
 180     //data->rpm[1] = fgGetDouble("/engines/engine[1]/rpm");
 181
 182     data->epr[0] = epr0_node->getDoubleValue();
 183     data->epr[1] = epr1_node->getDoubleValue();
 184     data->epr[2] = epr2_node->getDoubleValue();
 185     data->epr[3] = epr3_node->getDoubleValue();
 186
 187     data->egt[0] = egt0_node->getDoubleValue();
 188     data->egt[1] = egt1_node->getDoubleValue();
 189     data->egt[2] = egt2_node->getDoubleValue();
 190     data->egt[3] = egt3_node->getDoubleValue();
 191
 192     data->n2_turbine[0] = n20_node->getDoubleValue();
 193     data->n2_turbine[1] = n21_node->getDoubleValue();
 194     data->n2_turbine[2] = n22_node->getDoubleValue();
 195     data->n2_turbine[3] = n23_node->getDoubleValue();
 196
 197     data->n1_turbine[0] = n10_node->getDoubleValue();
 198     data->n1_turbine[1] = n11_node->getDoubleValue();
 199     data->n1_turbine[2] = n12_node->getDoubleValue();
 200     data->n1_turbine[3] = n13_node->getDoubleValue();
 201
 202 // This is really lbs/hr (pph), converted in FGSimTurbine
 203     data->fuel_flow[0] = fgGetDouble("/engines/engine[0]/fuel-flow-gph");
 204     data->fuel_flow[1] = fgGetDouble("/engines/engine[1]/fuel-flow-gph");
 205     data->fuel_flow[2] = fgGetDouble("/engines/engine[2]/fuel-flow-gph");
 206     data->fuel_flow[3] = fgGetDouble("/engines/engine[3]/fuel-flow-gph");
 207
 208     data->oil_pressure[0] = fgGetDouble("/engines/engine[0]/oil-pressure-psi");
 209     data->oil_pressure[1] = fgGetDouble("/engines/engine[1]/oil-pressure-psi");
 210     data->oil_pressure[2] = fgGetDouble("/engines/engine[2]/oil-pressure-psi");
 211     data->oil_pressure[3] = fgGetDouble("/engines/engine[3]/oil-pressure-psi");
 212
 213     //data->oil_temp[0] = fgGetDouble("/engines/engine[0]/oil-temperature-degf");
 214     //data->oil_temp[1] = fgGetDouble("/engines/engine[1]/oil-temperature-degf");
 215     //data->oil_temp[2] = fgGetDouble("/engines/engine[2]/oil-temperature-degf");
 216     //data->oil_temp[3] = fgGetDouble("/engines/engine[3]/oil-temperature-degf");
 217
 218     data->oil_temp[0] = oil_temp0->getDoubleValue();
 219     data->oil_temp[1] = oil_temp1->getDoubleValue();
 220     data->oil_temp[2] = oil_temp2->getDoubleValue();
 221     data->oil_temp[3] = oil_temp3->getDoubleValue();
 222
 223                 data->hyd_pressure[0] = fgGetDouble("/engines/engine[0]/hyd-pressure-psi");
 224                 data->hyd_pressure[1] = fgGetDouble("/engines/engine[1]/hyd-pressure-psi");
 225                 data->hyd_pressure[2] = fgGetDouble("/engines/engine[2]/hyd-pressure-psi");
 226                 data->hyd_pressure[3] = fgGetDouble("/engines/engine[3]/hyd-pressure-psi");
 227                 // just a temp thing until htdraulic model built
 228 //              data->hyd_pressure[0] = 2750.0;
 229 //              data->hyd_pressure[1] = 2755.0;
 230 //              data->hyd_pressure[2] = 2747.0;
 231 //              data->hyd_pressure[3] = 2851.0;
 232
 233
 234     //data->man_pressure[0] = fgGetDouble("/engines/engine[0]/mp-osi");
 235     //data->man_pressure[1] = fgGetDouble("/engines/engine[1]/mp-osi");
 236
 237     data->fuel_tank[0] = tank0_node->getDoubleValue() * 0.001;
 238     data->fuel_tank[1] = tank1_node->getDoubleValue() * 0.001;
 239     data->fuel_tank[2] = tank2_node->getDoubleValue() * 0.001;
 240     data->fuel_tank[3] = tank3_node->getDoubleValue() * 0.001;
 241     data->fuel_tank[4] = tank4_node->getDoubleValue() * 0.001;
 242     data->fuel_tank[5] = tank5_node->getDoubleValue() * 0.001; // 747 stab tank
 243     data->fuel_tank[6] = tank6_node->getDoubleValue() * 0.001; // 747 res2 tank
 244     data->fuel_tank[7] = tank7_node->getDoubleValue() * 0.001; // 747 res3 tank
 245     double total_fuel = 0.0;
 246     for ( int t= 0; t<8; t++ ) total_fuel += data->fuel_tank[t];
 247     data->fuel_tank[8] = total_fuel;
 248     //data->fuel_tank[8] = 386000.0; // total fuel load
 249                 //cout << endl << "Send " << data->fuel_tank[0] << endl;
 250 /*********
 251                 data->boost_pumps[0] = boost1_node->getBoolValue();
 252                 data->boost_pumps[1] = boost2_node->getBoolValue();
 253                 data->boost_pumps[2] = boost3_node->getBoolValue();
 254                 data->boost_pumps[3] = boost4_node->getBoolValue();
 255                 data->boost_pumps[4] = boost5_node->getBoolValue();
 256                 data->boost_pumps[5] = boost6_node->getBoolValue();
 257                 data->boost_pumps[6] = boost7_node->getBoolValue();
 258                 data->boost_pumps[7] = boost8_node->getBoolValue();
 259
 260                 data->over_ride_pumps[0] = ovride0_node->getBoolValue();
 261                 data->over_ride_pumps[1] = ovride1_node->getBoolValue();
 262                 data->over_ride_pumps[2] = ovride2_node->getBoolValue();
 263                 data->over_ride_pumps[3] = ovride3_node->getBoolValue();
 264                 data->over_ride_pumps[4] = ovride4_node->getBoolValue();
 265                 data->over_ride_pumps[5] = ovride5_node->getBoolValue();
 266
 267                 data->x_feed_valve[0] = x_feed0_node->getBoolValue();
 268                 data->x_feed_valve[1] = x_feed1_node->getBoolValue();
 269                 data->x_feed_valve[2] = x_feed2_node->getBoolValue();
 270                 data->x_feed_valve[3] = x_feed3_node->getBoolValue();
 271                 **********/
 272     data->total_temperature = cur_fdm_state->get_Total_temperature();
 273     data->total_pressure = cur_fdm_state->get_Total_pressure();
 274     data->dynamic_pressure = cur_fdm_state->get_Dynamic_pressure();
 275
 276     data->static_pressure = press_node->getDoubleValue();
 277     data->static_temperature = temp_node->getDoubleValue();
 278     data->wind = wind_speed_node->getDoubleValue();
 279     data->wind_dir =  wind_dir_node->getDoubleValue();
 280     data->sea_level_pressure = fgGetDouble("/environment/sea-level-pressure-inhg");
 281 }
 282
 283 static void distribute_data( const ogcFGData *data, FGInterface *chunk ) {
 284     // just a place holder until the CDU is developed
 285
 286 }
 287
 288 // process work for this port
 289 bool FGOpenGC::process() {
 290     SGIOChannel *io = get_io_channel();
 291     int length = sizeof(buf);
 292
 293     if ( get_direction() == SG_IO_OUT ) {
 294         collect_data( cur_fdm_state, &buf );
 295         //collect_data( &buf );
 296         if ( ! io->write( (char *)(& buf), length ) ) {
 297             SG_LOG( SG_IO, SG_ALERT, "Error writing data." );
 298             return false;
 299         }
 300     } else if ( get_direction() == SG_IO_IN ) {
 301         if ( io->get_type() == sgFileType ) {
 302             if ( io->read( (char *)(& buf), length ) == length ) {
 303                 SG_LOG( SG_IO, SG_DEBUG, "Success reading data." );
 304                 distribute_data( &buf, cur_fdm_state );
 305             }
 306         } else {
 307             while ( io->read( (char *)(& buf), length ) == length ) {
 308                 SG_LOG( SG_IO, SG_DEBUG, "Success reading data." );
 309                 distribute_data( &buf, cur_fdm_state );
 310             }
 311         }
 312     }
 313
 314     return true;
 315 }
 316
 317
 318 // close the channel
 319 bool FGOpenGC::close() {
 320     SGIOChannel *io = get_io_channel();
 321
 322     set_enabled( false );
 323
 324     if ( ! io->close() ) {
 325         return false;
 326     }
 327
 328     return true;
 329 }
 330