intermediate: handle sat status

lib/boatData/GwBoatData.cpp

@@ -61,3 +61,6 @@ double mtr2nm(double m)
     return m / 1852;
 }
 
+bool convertToJson(const GwSatInfoList &si,JsonVariant &variant){
+    return variant.set(si.getNumSats());
+}

lib/boatData/GwBoatData.h

@@ -55,7 +55,7 @@ class GwBoatItemBase{
 };
 class GwBoatData;
 template<class T> class GwBoatItem : public GwBoatItemBase{
-    private:
+    protected:
         T data;
         int lastUpdateSource;
     public:
@@ -106,9 +106,80 @@ double formatKnots(double cv);
 uint32_t mtr2nm(uint32_t m);
 double mtr2nm(double m);
 
+class GwSatInfo{
+    public:
+        unsigned char PRN;
+        uint32_t Elevation;
+        uint32_t Azimut;
+        uint32_t SNR;
+        unsigned long timestamp;
+};
+class GwSatInfoList{
+    public:
+        static const unsigned long lifeTime=32000;
+        std::vector<GwSatInfo> sats;
+        void houseKeeping(unsigned long ts=0){
+            if (ts == 0) ts=millis();
+            sats.erase(std::remove_if(
+                sats.begin(),
+                sats.end(),
+                [ts,this](const GwSatInfo &info){
+                    return (info.timestamp + lifeTime) < ts;
+                    }
+            ),sats.end());   
+        }
+        void update(GwSatInfo entry){
+            unsigned long now=millis();
+            entry.timestamp=now;
+            for (auto it=sats.begin();it!=sats.end();it++){
+                if (it->PRN == entry.PRN){
+                    *it=entry;
+                    houseKeeping();
+                    return;
+                }
+            }
+            houseKeeping();
+            sats.push_back(entry);
+        }
+        int getNumSats() const{
+            return sats.size();
+        }
+        GwSatInfo *getAt(int idx){
+            if (idx > 0 && idx < sats.size()) return &sats.at(idx);
+            return NULL;
+        }
+};
+
+bool convertToJson(const GwSatInfoList &si,JsonVariant &variant);
+class GwBoatDataSatList : public GwBoatItem<GwSatInfoList>
+{
+public:
+    GwBoatDataSatList(String name, String formatInfo, unsigned long invalidTime = INVALID_TIME, GwBoatItemMap *map = NULL) : GwBoatItem<GwSatInfoList>(name, formatInfo, invalidTime, map) {}
+    bool update(GwSatInfo info, int source)
+    {
+        unsigned long now = millis();
+        if (isValid(now))
+        {
+            //priority handling
+            //sources with lower ids will win
+            //and we will not overwrite their value
+            if (lastUpdateSource < source)
+            {
+                return false;
+            }
+        }
+        lastUpdateSource = source;
+        uls(now);
+        data.update(info);
+        return true;
+    }
+
+};
 
 #define GWBOATDATA(type,name,time,fmt)  \
     GwBoatItem<type> *name=new GwBoatItem<type>(F(#name),GwBoatItemBase::fmt,time,&values) ;
+#define GWSPECBOATDATA(clazz,name,time,fmt)  \
+    clazz *name=new clazz(F(#name),GwBoatItemBase::fmt,time,&values) ;
 class GwBoatData{
     private:
         GwLog *logger;
@@ -131,6 +202,7 @@ class GwBoatData{
     GWBOATDATA(double,Deviation,4000,formatCourse)
     GWBOATDATA(double,HDOP,4000,formatDop)
     GWBOATDATA(double,PDOP,4000,formatDop)
+    GWBOATDATA(double,VDOP,4000,formatDop)
     GWBOATDATA(double,RudderPosition,4000,formatCourse)
     GWBOATDATA(double,Latitude,4000,formatLatitude)
     GWBOATDATA(double,Longitude,4000,formatLongitude)
@@ -148,6 +220,7 @@ class GwBoatData{
     GWBOATDATA(uint32_t,TripLog,0,mtr2nm)
     GWBOATDATA(uint32_t,DaysSince1970,4000,formatFixed0)
     GWBOATDATA(int16_t,Timezone,8000,formatFixed0)
+    GWSPECBOATDATA(GwBoatDataSatList,SatInfo,GwSatInfoList::lifeTime,formatFixed0);
     public:
         GwBoatData(GwLog *logger);
         ~GwBoatData();

lib/nmea0183ton2k/NMEA0183DataToN2K.cpp

@@ -612,6 +612,32 @@ private:
                      DGPSAge);
         send(n2kMsg);             
     }
+    void convertGSA(const SNMEA0183Msg &msg){
+        if (msg.FieldCount() < 17)
+        {
+            LOG_DEBUG(GwLog::DEBUG, "failed to parse GSA %s", msg.line);
+            return;
+        }
+        int fixMode=atoi(msg.Field(1));
+
+        tN2kMsg n2kMsg;
+        tN2kGNSSDOPmode mode=N2kGNSSdm_Unavailable;
+        if (fixMode >= 0 && fixMode <=3) mode=(tN2kGNSSDOPmode)fixMode;
+        tN2kGNSSDOPmode rmode=mode;
+        if (msg.Field(0)[0] == 'A') rmode=N2kGNSSdm_Auto;
+        double HDOP=N2kDoubleNA;
+        double VDOP=N2kDoubleNA;
+        if (msg.FieldLen(15)> 0){
+            HDOP=atof(msg.Field(15));
+            if (!updateDouble(boatData->HDOP,HDOP,msg.sourceId)) return;
+        }
+        if (msg.FieldLen(16)> 0){
+            VDOP=atof(msg.Field(16));
+            if (!updateDouble(boatData->VDOP,VDOP,msg.sourceId)) return;
+        }
+        SetN2kGNSSDOPData(n2kMsg,1,rmode,mode,HDOP,VDOP,N2kDoubleNA);
+        send(n2kMsg);
+    }
 
 //shortcut for lambda converters
 #define CVL [](const SNMEA0183Msg &msg, NMEA0183DataToN2KFunctions *p) -> void
@@ -667,6 +693,9 @@ private:
         converters.registerConverter(
             129029UL,
             String(F("GGA")), &NMEA0183DataToN2KFunctions::convertGGA); 
+        converters.registerConverter(
+            129539UL,
+            String(F("GSA")), &NMEA0183DataToN2KFunctions::convertGSA);      
         unsigned long *aispgns=new unsigned long[7]{129810UL,129809UL,129040UL,129039UL,129802UL,129794UL,129038UL};
         converters.registerConverter(7,&aispgns[0],
             String(F("AIVDM")),&NMEA0183DataToN2KFunctions::convertAIVDX);

lib/nmea2kto0183/N2kDataToNMEA0183.cpp

@@ -323,6 +323,37 @@ private:
             }    
         }
     }
+    void HandleDop(const tN2kMsg &msg){
+        double HDOP=N2kDoubleNA;
+        double VDOP=N2kDoubleNA;
+        double TDOP;
+        tN2kGNSSDOPmode DesiredMode; 
+        tN2kGNSSDOPmode ActualMode;
+        unsigned char SID;
+        if (ParseN2kGNSSDOPData(msg,SID, DesiredMode, ActualMode,
+                         HDOP, VDOP, TDOP)){
+            updateDouble(boatData->HDOP,HDOP);
+            updateDouble(boatData->VDOP,VDOP);
+        }
+    }
+    void HandleSats(const tN2kMsg &msg){
+        unsigned char SID;
+        tN2kRangeResidualMode Mode;
+        uint8_t NumberOfSVs;
+        tSatelliteInfo info;
+        if (ParseN2kPGNSatellitesInView(msg,SID,Mode,NumberOfSVs)){
+            for (int i=0;i<NumberOfSVs;i++){
+                if (ParseN2kPGNSatellitesInView(msg,i,info)){
+                    GwSatInfo satInfo;
+                    satInfo.PRN=info.PRN;
+                    satInfo.Elevation=info.Elevation;
+                    satInfo.Azimut=info.Azimuth;
+                    satInfo.SNR=info.SNR;
+                    if (! boatData->SatInfo->update(satInfo,sourceId)) return;
+                }
+            }
+        }
+    }
 
     //*****************************************************************************
     void HandleWind(const tN2kMsg &N2kMsg)
@@ -948,6 +979,8 @@ private:
       converters.registerConverter(130310UL, &N2kToNMEA0183Functions::HandleWaterTemp);
       converters.registerConverter(126992UL, &N2kToNMEA0183Functions::HandleSystemTime);
       converters.registerConverter(129033UL, &N2kToNMEA0183Functions::HandleTimeOffset);
+      converters.registerConverter(129539UL, &N2kToNMEA0183Functions::HandleDop);
+      converters.registerConverter(129540UL, &N2kToNMEA0183Functions::HandleSats);
 #define HANDLE_AIS
 #ifdef HANDLE_AIS
       converters.registerConverter(129038UL, &N2kToNMEA0183Functions::HandleAISClassAPosReport);  // AIS Class A Position Report, Message Type 1