Make a subtle change to tile loading/unloading policy in order to make the tile

[flightgear.git] / src / Network / garmin.cxx

diff --git a/src/Network/garmin.cxx b/src/Network/garmin.cxx
index 590a92fdaae5f736e8f1ccd46363f23a13693d4d..f2c8f32880486396370c51482e8c93f3181687c3 100644 (file)
--- a/src/Network/garmin.cxx
+++ b/src/Network/garmin.cxx
@@ -27,6 +27,7 @@
 #include <simgear/timing/sg_time.hxx>
 
 #include <FDM/flight.hxx>
+#include <Main/fg_props.hxx>
 #include <Main/globals.hxx>
 
 #include "garmin.hxx"
@@ -64,7 +65,7 @@ static char calc_nmea_cksum(char *sentence) {
 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;
@@ -75,29 +76,29 @@ bool FGGarmin::gen_message() {
     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() );
@@ -109,26 +110,39 @@ bool FGGarmin::gen_message() {
     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;
 
@@ -137,14 +151,18 @@ bool FGGarmin::gen_message() {
     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";
 
     cout << garmin_sentence;
 
@@ -326,7 +344,7 @@ bool FGGarmin::parse_message() {
            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;
            }
 
@@ -374,7 +392,7 @@ bool FGGarmin::process() {
     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 ) {