also parse GPS iodc (clock)

Author: berthubert

gps.cc

@@ -38,6 +38,8 @@ int GPSState::parseGPSMessage(const std::vector<uint8_t>& cond, uint8_t* pageptr
     wn = 2048 + getbitu(&cond[0], 2*24, 10);
     ura = getbitu(&cond[0], 2*24+12, 4);
     gpshealth = getbitu(&cond[0], 2*24+16, 6);
+    iodc = getbitu(&cond[0], 2*24 +22, 2) * 256;
+    iodc += getbitu(&cond[0], 7*24, 8);
 
     //    cerr<<"GPS Week Number: "<< wn <<", URA: "<< (int)ura<<", health: "<<
     //      (int)gpshealth <<endl;

gps.hh

@@ -134,8 +134,10 @@ struct GPSState :  GPSLikeEphemeris
   uint16_t wnLSF{0};
   uint8_t dn; // leap second day number
   //   1  2^-31 2^-43 2^-55   16 second
+  int iodc;
   int ura;
 
+  
   int gpsiod{-1};
 
   int getIOD() const