Remove extraneous flag, use gps_enabled. Ensure factory reset is not triggered while chip is off and gps_enabled=0

src/ButtonThread.h

@@ -5,7 +5,6 @@
 #include "configuration.h"
 #include "graphics/Screen.h"
 #include "power.h"
-#include "GPS.h"
 #include <OneButton.h>
 
 namespace concurrency
@@ -164,7 +163,7 @@ class ButtonThread : public concurrency::OSThread
         digitalWrite(PIN_EINK_EN, digitalRead(PIN_EINK_EN) == LOW);
     #endif
     #if defined(GPS_POWER_TOGGLE)
-        if(gps->gpsPowerflag)
+        if(config.position.gps_enabled)
         {
         DEBUG_MSG("Flag set to false for gps power\n");
         } 
@@ -172,8 +171,8 @@ class ButtonThread : public concurrency::OSThread
         {
         DEBUG_MSG("Flag set to true to restore power\n");
         }
-    gps->gpsPowerflag = !(gps->gpsPowerflag);
+    config.position.gps_enabled = !(config.position.gps_enabled);
-    doGPSpowersave(gps->gpsPowerflag);
+    doGPSpowersave(config.position.gps_enabled);
     #endif
     }
 

src/GPSStatus.h

@@ -20,16 +20,19 @@ class GPSStatus : public Status
     bool hasLock = false;     // default to false, until we complete our first read
     bool isConnected = false; // Do we have a GPS we are talking to
 
+    bool isPowerSaving = false; //Are we in power saving state
+
     Position p = Position_init_default;
 
   public:
     GPSStatus() { statusType = STATUS_TYPE_GPS; }
 
     // preferred method
-    GPSStatus(bool hasLock, bool isConnected, const Position &pos) : Status()
+    GPSStatus(bool hasLock, bool isConnected, bool isPowerSaving, const Position &pos) : Status()
     {
         this->hasLock = hasLock;
         this->isConnected = isConnected;
+        this->isPowerSaving = isPowerSaving;
 
         // all-in-one struct copy
         this->p = pos;
@@ -44,6 +47,8 @@ class GPSStatus : public Status
 
     bool getIsConnected() const { return isConnected; }
 
+    bool getIsPowerSaving() const { return isPowerSaving;}
+
     int32_t getLatitude() const
     {
         if (config.position.fixed_position) {
@@ -94,7 +99,7 @@ class GPSStatus : public Status
 #ifdef GPS_EXTRAVERBOSE
         DEBUG_MSG("GPSStatus.match() new pos@%x to old pos@%x\n", newStatus->p.pos_timestamp, p.pos_timestamp);
 #endif
-        return (newStatus->hasLock != hasLock || newStatus->isConnected != isConnected ||
+        return (newStatus->hasLock != hasLock || newStatus->isConnected != isConnected || newStatus->isPowerSaving !=isPowerSaving ||
                 newStatus->p.latitude_i != p.latitude_i || newStatus->p.longitude_i != p.longitude_i ||
                 newStatus->p.altitude != p.altitude || newStatus->p.altitude_hae != p.altitude_hae ||
                 newStatus->p.PDOP != p.PDOP || newStatus->p.ground_track != p.ground_track ||

src/gps/GPS.cpp

@@ -270,6 +270,12 @@ bool GPS::setup()
     pinMode(PIN_GPS_EN, OUTPUT);
 #endif
 
+#ifdef HAS_PMU
+if(config.position.gps_enabled){
+    setGPSPower(true);
+}
+#endif
+
 #ifdef PIN_GPS_RESET
     digitalWrite(PIN_GPS_RESET, 1); // assert for 10ms
     pinMode(PIN_GPS_RESET, OUTPUT);
@@ -282,8 +288,12 @@ bool GPS::setup()
     if (ok) {
         notifySleepObserver.observe(&notifySleep);
         notifyDeepSleepObserver.observe(&notifyDeepSleep);
+        notifyGPSSleepObserver.observe(&notifyGPSSleep);
+    }
+    if (config.position.gps_enabled==false) {
+        setAwake(false);
+        doGPSpowersave(false);
     }
-
     return ok;
 }
 
@@ -292,6 +302,7 @@ GPS::~GPS()
     // we really should unregister our sleep observer
     notifySleepObserver.unobserve(&notifySleep);
     notifyDeepSleepObserver.unobserve(&notifyDeepSleep);
+    notifyGPSSleepObserver.observe(&notifyGPSSleep);
 }
 
 bool GPS::hasLock()
@@ -404,7 +415,7 @@ void GPS::publishUpdate()
         DEBUG_MSG("publishing pos@%x:2, hasVal=%d, GPSlock=%d\n", p.timestamp, hasValidLocation, hasLock());
 
         // Notify any status instances that are observing us
-        const meshtastic::GPSStatus status = meshtastic::GPSStatus(hasValidLocation, isConnected(), p);
+        const meshtastic::GPSStatus status = meshtastic::GPSStatus(hasValidLocation, isConnected(), isPowerSaving(), p);
         newStatus.notifyObservers(&status);
     }
 }
@@ -415,7 +426,7 @@ int32_t GPS::runOnce()
         // if we have received valid NMEA claim we are connected
         setConnected();
     } else {
-        if(gnssModel == GNSS_MODEL_UBLOX){
+        if((config.position.gps_enabled == 1) && (gnssModel == GNSS_MODEL_UBLOX)){
             // reset the GPS on next bootup
             if(devicestate.did_gps_reset && (millis() > 60000) && !hasFlow()) {
                 DEBUG_MSG("GPS is not communicating, trying factory reset on next bootup.\n");
@@ -517,6 +528,7 @@ int GPS::prepareDeepSleep(void *unused)
     DEBUG_MSG("GPS deep sleep!\n");
 
     // For deep sleep we also want abandon any lock attempts (because we want minimum power)
+    getSleepTime();
     setAwake(false);
 
     return 0;
@@ -652,6 +664,11 @@ GPS *createGps()
             return new_gps;
         }
     }
+    else{
+        GPS *new_gps = new NMEAGPS();
+        new_gps->setup();
+        return new_gps;
+    }
     return nullptr;
 #endif
 }

src/gps/GPS.h

@@ -49,6 +49,7 @@ class GPS : private concurrency::OSThread
 
     CallbackObserver<GPS, void *> notifySleepObserver = CallbackObserver<GPS, void *>(this, &GPS::prepareSleep);
     CallbackObserver<GPS, void *> notifyDeepSleepObserver = CallbackObserver<GPS, void *>(this, &GPS::prepareDeepSleep);
+    CallbackObserver<GPS, void *> notifyGPSSleepObserver = CallbackObserver<GPS, void *>(this, &GPS::prepareDeepSleep);
 
   public:
     /** If !NULL we will use this serial port to construct our GPS */
@@ -77,7 +78,7 @@ class GPS : private concurrency::OSThread
     /// Return true if we are connected to a GPS
     bool isConnected() const { return hasGPS; }
 
-    bool gpsPowerflag = 1; 
+    bool isPowerSaving() const { return !config.position.gps_enabled;}
 
     /**
      * Restart our lock attempt - try to get and broadcast a GPS reading ASAP

src/sleep.cpp

@@ -29,7 +29,9 @@ Observable<void *> preflightSleep;
 
 /// Called to tell observers we are now entering sleep and you should prepare.  Must return 0
 /// notifySleep will be called for light or deep sleep, notifyDeepSleep is only called for deep sleep
+/// notifyGPSSleep will be called when config.position.gps_enabled is set to 0 or from buttonthread when GPS_POWER_TOGGLE is enabled.
 Observable<void *> notifySleep, notifyDeepSleep;
+Observable<void *> notifyGPSSleep;
 
 // deep sleep support
 RTC_DATA_ATTR int bootCount = 0;
@@ -169,6 +171,7 @@ static void waitEnterSleep()
 
 void doGPSpowersave(bool on)
 {
+    #ifdef HAS_PMU
     if (on)
     {
         DEBUG_MSG("Turning GPS back on\n");
@@ -178,9 +181,10 @@ void doGPSpowersave(bool on)
     else
     {
         DEBUG_MSG("Turning off GPS chip\n");
-        notifySleep.notifyObservers(NULL);
+        notifyGPSSleep.notifyObservers(NULL);
         setGPSPower(0);
     }
+    #endif
 }
 
 void doDeepSleep(uint64_t msecToWake)

src/sleep.h

@@ -37,4 +37,6 @@ extern Observable<void *> notifySleep;
 /// Called to tell observers we are now entering (deep) sleep and you should prepare.  Must return 0
 extern Observable<void *> notifyDeepSleep;
 
+/// Called to tell GPS thread to enter deep sleep independently of LoRa/MCU sleep, prior to full poweroff. Must return 0
+extern Observable<void *> notifyGPSSleep;
 void enableModemSleep();