// ADA.cxx -- interface to the "External"-ly driven ADA flight model // // 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. // // $Id$ // Modified by Cdr. VS Renganthan , 12 Oct 2K #include #include #include #include "ADA.hxx" #define numberofbytes 472 struct { double number_of_bytes; double lat_geoc; double lon_geoc; double altitude; double psirad; double thetrad; double phirad; double earth_posn_angle; double radius_to_vehicle; double sea_level_radius; double latitude; double longitude; double Vnorth; double Veast; double Vdown; double Vcas_kts; double prad; double qrad; double rrad; double alpharad; double betarad; double latitude_dot; double longitude_dot; double radius_dot; double Gamma_vert_rad; double Runway_altitude; double throttle; double pstick; double rstick; double rpedal; double U_local; double V_local; double W_local; double U_dot_local; double V_dot_local; double W_dot_local; double Machno; double anxg; double anyg; double anzg; double aux1; double aux2; double aux3; double aux4; double aux5; double aux6; double aux7; double aux8; int iaux1; int iaux2; int iaux3; int iaux4; int iaux5; int iaux6; int iaux7; int iaux8; int iaux9; int iaux10; int iaux11; int iaux12; float aux9; float aux10; float aux11; float aux12; float aux13; float aux14; float aux15; float aux16; float aux17; float aux18; } sixdof_to_visuals; #define number_of_bytes sixdof_to_visuals.number_of_bytes #define U_dot_local sixdof_to_visuals.U_dot_local #define V_dot_local sixdof_to_visuals.V_dot_local #define W_dot_local sixdof_to_visuals.W_dot_local #define U_local sixdof_to_visuals.U_local #define V_local sixdof_to_visuals.V_local #define W_local sixdof_to_visuals.W_local #define throttle sixdof_to_visuals.throttle #define pstick sixdof_to_visuals.pstick #define rstick sixdof_to_visuals.rstick #define rpedal sixdof_to_visuals.rpedal #define V_north sixdof_to_visuals.Vnorth #define V_east sixdof_to_visuals.Veast #define V_down sixdof_to_visuals.Vdown #define V_calibrated_kts sixdof_to_visuals.Vcas_kts #define P_body sixdof_to_visuals.prad #define Q_body sixdof_to_visuals.qrad #define R_body sixdof_to_visuals.rrad #define Latitude_dot sixdof_to_visuals.latitude_dot #define Longitude_dot sixdof_to_visuals.longitude_dot #define Radius_dot sixdof_to_visuals.radius_dot #define Latitude sixdof_to_visuals.latitude #define Longitude sixdof_to_visuals.longitude #define Lat_geocentric sixdof_to_visuals.lat_geoc #define Lon_geocentric sixdof_to_visuals.lon_geoc #define Radius_to_vehicle sixdof_to_visuals.radius_to_vehicle #define Altitude sixdof_to_visuals.altitude #define Phi sixdof_to_visuals.phirad #define Theta sixdof_to_visuals.thetrad #define Psi sixdof_to_visuals.psirad #define Alpha sixdof_to_visuals.alpharad #define Beta sixdof_to_visuals.betarad #define Sea_level_radius sixdof_to_visuals.sea_level_radius #define Earth_position_angle sixdof_to_visuals.earth_posn_angle #define Runway_altitude sixdof_to_visuals.Runway_altitude #define Gamma_vert_rad sixdof_to_visuals.Gamma_vert_rad #define Machno sixdof_to_visuals.Machno #define anxg sixdof_to_visuals.anxg #define anyg sixdof_to_visuals.anyg #define anzg sixdof_to_visuals.anzg // Initialize the ADA flight model, dt is the time increment // for each subsequent iteration through the EOM bool FGADA::init( double dt ) { // cout << "FGADA::init()" << endl; char Buffer[numberofbytes]; // set valid time for this record stamp_time(); printf("\nInitialising UDP sockets\n"); // initialise a "udp" socket fdmsock = new SGSocket( "reddy_pc", "5001", "udp" ); // open as a client bool result = fdmsock->open(SG_IO_OUT); if (result == false) { printf ("Socket Open Error\n"); } else { // Dummy Write FGExternal structure from socket to establish connection int result = fdmsock->write(Buffer, numberofbytes); printf("Connection established.\n"); } return true; } // Run an iteration of the EOM. This is essentially a NOP here // because these values are getting filled in elsewhere based on // external input. bool FGADA::update( int multiloop ) { // cout << "FGADA::update()" << endl; char Buffer[numberofbytes]; // Read FGExternal structure from socket int result = fdmsock->read(Buffer, numberofbytes); // Loop to read from top of socket buffer - Last in first out while (result == numberofbytes) { result = fdmsock->read(Buffer, numberofbytes); } // Copy buffer into FGExternal structure memcpy (&sixdof_to_visuals, &Buffer, sizeof (Buffer)); //cout << endl << sixdof_to_visuals.aux18 << endl; // Close Visuals through message/flag from Flight model if (sixdof_to_visuals.aux18 == 1) { fdmsock->close(); ConfirmExitDialog(); } //cout << endl << sixdof_to_visuals.aux18 << endl; // Convert from the FGExternal struct to the FGInterface struct (input) copy_from_FGADA(); return true; } // Convert from the FGInterface struct to the FGADA struct (output) bool FGADA::copy_to_FGADA () { return true; } // Convert from the FGADA struct to the FGInterface struct (input) bool FGADA::copy_from_FGADA() { // Velocities set_Velocities_Local( V_north, V_east, V_down ); set_V_calibrated_kts( V_calibrated_kts ); // Angular rates set_Omega_Body( P_body, Q_body, R_body ); set_Geocentric_Rates( Latitude_dot, Longitude_dot, Radius_dot ); // FG_LOG( FG_FLIGHT, FG_DEBUG, "lon = " << Longitude // << " lat_geoc = " << Lat_geocentric << " lat_geod = " << Latitude // << " alt = " << Altitude << " sl_radius = " << Sea_level_radius // << " radius_to_vehicle = " << Radius_to_vehicle ); // Positions set_Geocentric_Position( Lat_geocentric, Lon_geocentric,Radius_to_vehicle ); set_Geodetic_Position( Latitude, Longitude, Altitude ); set_Euler_Angles( Phi, Theta, Psi ); // Miscellaneous quantities set_Alpha( Alpha ); set_Beta( Beta ); set_Gamma_vert_rad( Gamma_vert_rad ); set_Sea_level_radius( Sea_level_radius ); set_Earth_position_angle( Earth_position_angle ); set_Runway_altitude( Runway_altitude ); set_sin_lat_geocentric(Lat_geocentric); set_cos_lat_geocentric(Lat_geocentric); set_sin_cos_longitude(Longitude); set_sin_cos_latitude(Latitude); set_Accels_Local( U_dot_local, V_dot_local, W_dot_local ); set_Velocities_Ground( U_local, V_local, W_local ); set_Accels_CG_Body_N( anxg,anyg,anzg); set_Mach_number( Machno); // printf("sr=%f\n",Sea_level_radius); // printf("psi = %f %f\n",Psi,Psi*RAD_TO_DEG); // controls controls.set_throttle(0,throttle/131.0); controls.set_elevator(pstick); controls.set_aileron(rstick); controls.set_rudder(rpedal); // auxilliary parameters for HUD set_iaux1(sixdof_to_visuals.iaux1); set_iaux2(sixdof_to_visuals.iaux2); set_iaux3(sixdof_to_visuals.iaux3); set_iaux4(sixdof_to_visuals.iaux4); set_iaux5(sixdof_to_visuals.iaux5); set_iaux6(sixdof_to_visuals.iaux6); set_iaux7(sixdof_to_visuals.iaux7); set_iaux8(sixdof_to_visuals.iaux8); set_iaux9(sixdof_to_visuals.iaux9); set_iaux10(sixdof_to_visuals.iaux10); set_iaux11(sixdof_to_visuals.iaux11); set_iaux12(sixdof_to_visuals.iaux12); set_aux1(sixdof_to_visuals.aux1); set_aux2(sixdof_to_visuals.aux2); set_aux3(sixdof_to_visuals.aux3); set_aux4(sixdof_to_visuals.aux4); set_aux5(sixdof_to_visuals.aux5); set_aux6(sixdof_to_visuals.aux6); set_aux7(sixdof_to_visuals.aux7); set_aux8(sixdof_to_visuals.aux8); set_aux9(sixdof_to_visuals.aux9); set_aux10(sixdof_to_visuals.aux10); set_aux11(sixdof_to_visuals.aux11); set_aux12(sixdof_to_visuals.aux12); set_aux13(sixdof_to_visuals.aux13); set_aux14(sixdof_to_visuals.aux14); set_aux15(sixdof_to_visuals.aux15); set_aux16(sixdof_to_visuals.aux16); set_aux17(sixdof_to_visuals.aux17); set_aux18(sixdof_to_visuals.aux18); cout << endl << sixdof_to_visuals.aux18 << endl; return true; }