//
// Written by Curtis Olson, started November 1999.
//
-// Copyright (C) 1999 Curtis L. Olson - curt@flightgear.org
+// Copyright (C) 1999 Curtis L. Olson - http://www.flightgear.org/~curt
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License as
//
// 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.
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
// $Id$
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <iostream>
#include <simgear/debug/logstream.hxx>
#include <simgear/math/sg_geodesy.hxx>
#include <simgear/timing/sg_time.hxx>
#include <FDM/flight.hxx>
+#include <Main/fg_props.hxx>
#include <Main/globals.hxx>
#include "garmin.hxx"
+using std::string;
FGGarmin::FGGarmin() {
}
bool FGGarmin::gen_message() {
// cout << "generating garmin message" << endl;
- char rmc[256], rmc_sum[256], rmz[256], rmz_sum[256];
+ char rmc[256], rmc_sum[256], rmz[256], rmz_sum[256], gsa[256];
char dir;
int deg;
double min;
sprintf( utc, "%02d%02d%02d",
t->getGmt()->tm_hour, t->getGmt()->tm_min, t->getGmt()->tm_sec );
- char lat[20];
+ char rmc_lat[20];
double latd = cur_fdm_state->get_Latitude() * SGD_RADIANS_TO_DEGREES;
if ( latd < 0.0 ) {
- latd *= -1.0;
+ latd = -latd;
dir = 'S';
} else {
dir = 'N';
}
deg = (int)(latd);
min = (latd - (double)deg) * 60.0;
- sprintf( lat, "%02d%06.3f,%c", abs(deg), min, dir);
+ sprintf( rmc_lat, "%02d%07.4f,%c", abs(deg), min, dir);
- char lon[20];
+ char rmc_lon[20];
double lond = cur_fdm_state->get_Longitude() * SGD_RADIANS_TO_DEGREES;
if ( lond < 0.0 ) {
- lond *= -1.0;
+ lond = -lond;
dir = 'W';
} else {
dir = 'E';
}
deg = (int)(lond);
min = (lond - (double)deg) * 60.0;
- sprintf( lon, "%03d%06.3f,%c", abs(deg), min, dir);
+ sprintf( rmc_lon, "%03d%07.4f,%c", abs(deg), min, dir);
char speed[10];
sprintf( speed, "%05.1f", cur_fdm_state->get_V_equiv_kts() );
sprintf( altitude_m, "%02d",
(int)(cur_fdm_state->get_Altitude() * SG_FEET_TO_METER) );
- char altitude_ft[10];
- sprintf( altitude_ft, "%02d", (int)cur_fdm_state->get_Altitude() );
-
char date[10];
+ int year = t->getGmt()->tm_year;
+ while ( year >= 100 ) { year -= 100; }
sprintf( date, "%02d%02d%02d", t->getGmt()->tm_mday,
- t->getGmt()->tm_mon+1, t->getGmt()->tm_year );
+ t->getGmt()->tm_mon+1, year );
+
+ char magvar[10];
+ float magdeg = fgGetDouble( "/environment/magnetic-variation-deg" );
+ if ( magdeg < 0.0 ) {
+ magdeg = -magdeg;
+ dir = 'W';
+ } else {
+ dir = 'E';
+ }
+ sprintf( magvar, "%05.1f,%c", magdeg, dir );
- // $GPRMC,HHMMSS,A,DDMM.MMM,N,DDDMM.MMM,W,XXX.X,XXX.X,DDMMYY,XXX.X,E*XX
- sprintf( rmc, "GPRMC,%s,A,%s,%s,%s,%s,%s,000.0,E",
- utc, lat, lon, speed, heading, date );
+ // $GPRMC,HHMMSS,A,DDMM.MMMM,N,DDDMM.MMMM,W,XXX.X,XXX.X,DDMMYY,XXX.X,E*XX
+ sprintf( rmc, "GPRMC,%s,A,%s,%s,%s,%s,%s,%s",
+ utc, rmc_lat, rmc_lon, speed, heading, date, magvar );
sprintf( rmc_sum, "%02X", calc_nmea_cksum(rmc) );
// sprintf( gga, "$GPGGA,%s,%s,%s,1,04,0.0,%s,M,00.0,M,,*00\r\n",
// utc, lat, lon, altitude_m );
- sprintf( rmz, "PGRMZ,%s,f,3", altitude_ft );
+ sprintf( rmz, "PGRMZ,%s,M,3", altitude_m );
sprintf( rmz_sum, "%02X", calc_nmea_cksum(rmz) );
+ sprintf( gsa, "%s",
+ "$GPGSA,A,3,01,02,03,,05,,07,,09,,11,12,0.9,0.9,2.0*38" );
+
SG_LOG( SG_IO, SG_DEBUG, rmc );
SG_LOG( SG_IO, SG_DEBUG, rmz );
+ SG_LOG( SG_IO, SG_DEBUG, gsa );
string garmin_sentence;
garmin_sentence += rmc;
garmin_sentence += "*";
garmin_sentence += rmc_sum;
- garmin_sentence += "\n";
+ garmin_sentence += "\r\n";
// RMZ sentence (garmin proprietary)
garmin_sentence += "$";
garmin_sentence += rmz;
garmin_sentence += "*";
garmin_sentence += rmz_sum;
- garmin_sentence += "\n";
+ garmin_sentence += "\r\n";
+
+ // GSA sentence (totally faked)
+ garmin_sentence += gsa;
+ garmin_sentence += "\r\n";
std::cout << garmin_sentence;
string alt_units = msg.substr(begin, end - begin);
begin = end + 1;
- if ( alt_units != (string)"F" && alt_units != (string)"f" ) {
+ if ( alt_units != "F" && alt_units != "f" ) {
altitude *= SG_METER_TO_FEET;
}
if ( get_direction() == SG_IO_OUT ) {
gen_message();
if ( ! io->write( buf, length ) ) {
- SG_LOG( SG_IO, SG_ALERT, "Error writing data." );
+ SG_LOG( SG_IO, SG_WARN, "Error writing data." );
return false;
}
} else if ( get_direction() == SG_IO_IN ) {