add datetime settings

Daemons/10micron_stellarium/libsofa.c

@@ -46,7 +46,7 @@ void radtodeg(double r){
 #endif
 
 // temporal stubs for weather/place data; return 0 if all OK
-static int getPlace(placeData *p){
+int getPlace(placeData *p){
     if(!p) return 0;
     /* Site longitude, latitude (radians) and height above the geoid (m). */
     p->slong = 0.7232763200;
@@ -59,14 +59,14 @@ static int getPlace(placeData *p){
     //DBG("long: %.10f, lat: %.10f", p->slong, p->slat);
     return 0;
 }
-static int getWeath(placeWeather *w){
+int getWeath(placeWeather *w){
     if(!w) return 0;
     w->relhum = 0.7;
     w->tc = 0.;
     w->php = 780.;
     return 0;
 }
-static int getDUT(almDut *a){
+int getDUT(almDut *a){
     if(!a) return 0;
     a->px = a->py = a->DUT1 = 0.;
     return 0;

Daemons/10micron_stellarium/libsofa.h

@@ -70,5 +70,7 @@ typedef struct{
 
 int get_MJDt(struct timeval *tval, sMJD *MJD);
 int get_ObsPlace(struct timeval *tval, polarCrds *p2000, polarCrds *pnow, horizCrds *hnow);
-
+int getDUT(almDut *a);
+int getWeath(placeWeather *w);
+int getPlace(placeData *p);
 #endif // LIBSOFA_H__

Daemons/10micron_stellarium/main.c

@@ -49,18 +49,22 @@ static uint8_t buff[BUFLEN+1];
 // global parameters
 static glob_pars *GP = NULL;
 
+static pid_t childpid = 1; // PID of child process
 static volatile int global_quit = 0;
 // quit by signal
 void signals(int sig){
     signal(sig, SIG_IGN);
     unlink(GP->crdsfile); // remove header file
     unlink(GP->pidfile);  // and remove pidfile
-    restore_console();
-    restore_tty();
+    if(childpid){ // parent process
+        restore_console();
+        restore_tty();
+    }
     DBG("Get signal %d, quit.\n", sig);
     global_quit = 1;
     sleep(1);
-    WARNX(_("PID %d exit with status %d"), getpid(), sig);
+    if(childpid) putlog("PID %d exit with status %d after child's %d death", getpid(), sig, childpid);
+    else WARN("Child %d died with %d", getpid(), sig);
     exit(sig);
 }
 
@@ -403,6 +407,7 @@ int main(int argc, char **argv){
     if(GP->logfile) openlogfile(GP->logfile);
 
     signal(SIGTERM, signals); // kill (-15) - quit
+    signal(SIGKILL, signals); // kill (-9) - quit
     signal(SIGHUP, SIG_IGN);  // hup - ignore
     signal(SIGINT, signals);  // ctrl+C - quit
     signal(SIGQUIT, signals); // ctrl+\ - quit
@@ -423,7 +428,7 @@ int main(int argc, char **argv){
 #endif // EBUG
 
     while(1){
-        pid_t childpid = fork();
+        childpid = fork();
         if(childpid < 0){
             putlog("fork() error");
             ERR("ERROR on fork");

Daemons/10micron_stellarium/telescope.c

@@ -98,6 +98,46 @@ static char *write_cmd(const char *cmd){
     return NULL;
 }
 
+// write to telescope mount corrections: datetime, pressure and temperature
+static void makecorr(){
+    // write current date&time
+	char buf[64], *ans;
+#ifdef EBUG
+        write_cmd(":GUDT#");
+#endif
+    write_cmd(":gT#"); // correct time by GPS
+    ans = write_cmd(":gtg#");
+    if(!ans || *ans != '1'){
+        WARNX("mount don't synchronized with GPS! Refresh datetime");
+        time_t t = time(NULL);
+        struct tm *stm = localtime(&t);
+        struct timeval tv;
+        gettimeofday(&tv,NULL);
+        snprintf(buf, 64, ":SLDT%04d-%02d-%02d,%02d:%02d:%02d.%02ld#", 1900+stm->tm_year, stm->tm_mon, stm->tm_mday,
+                 stm->tm_hour, stm->tm_min, stm->tm_sec, tv.tv_usec/10000);
+        ans = write_cmd(buf);
+        if(!ans || *ans != '1'){
+            WARNX("Can't write current date/time");
+            putlog("Can't set system time");
+        }else putlog("Set system time by command %s", buf);
+#ifdef EBUG
+        write_cmd(":GUDT#");
+#endif
+    }
+    placeWeather w;
+    if(getWeath(&w)) putlog("Can't determine weather data");
+    else{ // set refraction model data
+        snprintf(buf, 64, ":SRPRS%.1f#", w.php);
+        ans = write_cmd(buf);
+        if(!ans || *ans != '1') putlog("Can't set pressure data of refraction model");
+        else putlog("Correct pressure to %g", w.php);
+        snprintf(buf, 64, ":SRTMP%.1f#", w.tc);
+        ans = write_cmd(buf);
+        if(!ans || *ans != '1') putlog("Can't set temperature data of refraction model");
+        else putlog("Correct temperature to %g", w.tc);
+    }
+}
+
 
 int chkconn(){
     char tmpbuf[4096];
@@ -131,11 +171,13 @@ int connect_telescope(char *dev, char *hdrname){
         if(!chkconn()) return 0;
     }
     write_cmd(":U2#");
-    write_cmd(":U2#");
+    write_cmd(":U2#"); // set high precision
+    write_cmd(":So10#"); // set minimum altitude to 10 degrees
     putlog("Connected to %s@115200, will write FITS-header into %s", dev, hdrname);
     hdname = strdup(hdrname);
     DBG("connected");
     Target = 0;
+    write_cmd(":gT#"); // correct time by GPS
     return 1;
 }
 
@@ -324,12 +366,16 @@ static void getplace(){
     }
 }
 
-
 /**
  * @brief wrhdr - try to write into header file
  */
 void wrhdr(){
     static int failcounter = 0;
+    static time_t lastcorr = 0; // last time of corrections made
+    if(time(NULL) - lastcorr > CORRECTIONS_TIMEDIFF){
+        lastcorr = time(NULL);
+        makecorr();
+    }
     char *ans = NULL, *jd = NULL, *lst = NULL, *date = NULL, *pS = NULL;
     // get coordinates for writing to file & sending to stellarium client
     ans = write_cmd(":GR#");
@@ -354,7 +400,7 @@ void wrhdr(){
     tlast = time(NULL);
     if(!hdname) return;
     if(!elevation || !longitude || !latitude) getplace();
-    ans = write_cmd(":GJD#"); jd = dups(ans, 0);
+    ans = write_cmd(":GJD1#"); jd = dups(ans, 0);
     ans = write_cmd(":GS#"); lst = dups(ans, 1);
     ans = write_cmd(":GUDT#");
     if(ans){
@@ -395,12 +441,14 @@ void wrhdr(){
     if(!get_MJDt(NULL, &mjd)){
         snprintf(val, 22, "%.10f", 2000.+(mjd.MJD-MJD2000)/365.25); // calculate EPOCH/EQUINOX
         WRHDR("EQUINOX", val, "Equinox of celestial coordinate system");
+        snprintf(val, 22, "%.10f", mjd.MJD);
+        WRHDR("MJD-END", val, "Modified julian date of observations end");
     }
+    if(jd) WRHDR("JD-END", jd, "Julian date of observations end");
     if(pS) WRHDR("PIERSIDE", pS, "Pier side of telescope mount");
     if(elevation) WRHDR("ELEVAT", elevation, "Elevation of site over the sea level");
     if(longitude) WRHDR("LONGITUD", longitude, "Geo longitude of site (east negative)");
     if(latitude) WRHDR("LATITUDE", latitude, "Geo latitude of site (south negative)");
-    if(jd) WRHDR("JD-END", jd, "Julian date of observations end");
     if(lst) WRHDR("LSTEND", lst, "Local sidereal time of observations end");
     if(date) WRHDR("DATE-END", date, "Date (UTC) of observations end");
     FREE(jd); FREE(lst); FREE(date); FREE(pS);
@@ -409,6 +457,4 @@ void wrhdr(){
     close(hdrfd);
 }
 
-// LSTSTART - sid time
-// MJD-END
 

Daemons/10micron_stellarium/telescope.h

@@ -26,6 +26,8 @@
 
 // max time after last coordinates reading
 #define COORDS_TOO_OLD_TIME     (5)
+// make datetime/pressure/temperature corrections each CORRECTIONS_TIMEDIFF seconds
+#define CORRECTIONS_TIMEDIFF    (3600)
 
 int connect_telescope(char *dev, char *hdrname);
 int point_telescope(double ra, double decl);