GPS fixes & code sanitization

include/gpsread.h

@@ -18,10 +18,10 @@ extern gpsStatus_t
 extern TaskHandle_t GpsTask;
 
 int gps_init(void);
-void IRAM_ATTR gps_storetime(gpsStatus_t &gps_store);
-void gps_storelocation(gpsStatus_t &gps_store);
+void IRAM_ATTR gps_storetime(gpsStatus_t *gps_store);
+void gps_storelocation(gpsStatus_t *gps_store);
 void gps_loop(void *pvParameters);
-time_t get_gpstime(gpsStatus_t value);
+time_t fetch_gpsTime(gpsStatus_t value);
 int gps_config();
 
 #endif

src/display.cpp

@@ -195,16 +195,13 @@ void draw_page(time_t t, uint8_t page) {
 
 // update GPS status (line 2)
 #if (HAS_GPS)
-    // have we ever got valid gps data?
-    if (gps.passedChecksum() > 0) {
-      u8x8.setCursor(9, 2);
-      if (!gps.location.isValid()) // if no fix then display Sats value inverse
-      {
-        u8x8.setInverseFont(1);
-        u8x8.printf("Sats:%.2d", gps.satellites.value());
-        u8x8.setInverseFont(0);
-      } else
-        u8x8.printf("Sats:%.2d", gps.satellites.value());
+    u8x8.setCursor(9, 2);
+    if (gps.location.age() < 1500) // if no fix then display Sats value inverse
+      u8x8.printf("Sats:%.2d", gps.satellites.value());
+    else {
+      u8x8.setInverseFont(1);
+      u8x8.printf("Sats:%.2d", gps.satellites.value());
+      u8x8.setInverseFont(0);
     }
 #endif
 
@@ -252,12 +249,11 @@ void draw_page(time_t t, uint8_t page) {
     u8x8.setInverseFont(1);
     u8x8.printf("%c", timeState);
     u8x8.setInverseFont(0);
-    u8x8.printf(" %2d.%3s", day(t), printmonth[month(t)]);
 #else
-    u8x8.printf("%02d:%02d:%02d%c %2d.%3s", hour(t), minute(t), second(t),
-                timeState, day(t), printmonth[month(t)]);
+    u8x8.printf("%02d:%02d:%02d%c", hour(t), minute(t), second(t), timeState);
 #endif // HAS_DCF77 || HAS_IF482
-
+    if (timeSource != _unsynced)
+      u8x8.printf(" %2d.%3s", day(t), printmonth[month(t)]);
 #else // update LoRa status display
 #if (HAS_LORA)
     u8x8.printf("%-16s", display_line6);

src/gpsread.cpp

@@ -66,53 +66,50 @@ int gps_config() {
 }
 
 // store current GPS location data in struct
-void gps_storelocation(gpsStatus_t &gps_store) {
-  gps_store.latitude = (int32_t)(gps.location.lat() * 1e6);
-  gps_store.longitude = (int32_t)(gps.location.lng() * 1e6);
-  gps_store.satellites = (uint8_t)gps.satellites.value();
-  gps_store.hdop = (uint16_t)gps.hdop.value();
-  gps_store.altitude = (int16_t)gps.altitude.meters();
+void gps_storelocation(gpsStatus_t *gps_store) {
+  if (gps.location.isUpdated() && gps.location.isValid() &&
+      (gps.time.age() < 1500)) {
+    gps_store->latitude = (int32_t)(gps.location.lat() * 1e6);
+    gps_store->longitude = (int32_t)(gps.location.lng() * 1e6);
+    gps_store->satellites = (uint8_t)gps.satellites.value();
+    gps_store->hdop = (uint16_t)gps.hdop.value();
+    gps_store->altitude = (int16_t)gps.altitude.meters();
+  }
 }
 
 // store current GPS timedate in struct
-void IRAM_ATTR gps_storetime(gpsStatus_t &gps_store) {
+void IRAM_ATTR gps_storetime(gpsStatus_t *gps_store) {
 
   if (gps.time.isUpdated() && gps.date.isValid() && (gps.time.age() < 1000)) {
 
     // nmea telegram serial delay compensation; not sure if we need this?
     /*
     if (gps.time.age() > nmea_txDelay_ms)
-      gps_store.timedate.Second = gps.time.second() + 1;
+      gps_store->timedate.Second = gps.time.second() + 1;
     else
-      gps_store.timedate.Second = gps.time.second();
+      gps_store->timedate.Second = gps.time.second();
     */
 
-    gps_store.timedate.Second = gps.time.second();
-    gps_store.timedate.Minute = gps.time.minute();
-    gps_store.timedate.Hour = gps.time.hour();
-    gps_store.timedate.Day = gps.date.day();
-    gps_store.timedate.Month = gps.date.month();
-    gps_store.timedate.Year =
+    gps_store->timedate.Second = gps.time.second();
+    gps_store->timedate.Minute = gps.time.minute();
+    gps_store->timedate.Hour = gps.time.hour();
+    gps_store->timedate.Day = gps.date.day();
+    gps_store->timedate.Month = gps.date.month();
+    gps_store->timedate.Year =
         CalendarYrToTm(gps.date.year()); // year offset from 1970 in microTime.h
 
   } else
-    gps_store.timedate = {0};
+    gps_store->timedate = {0};
 }
 
 // function to fetch current time from struct; note: this is costly
-time_t get_gpstime(gpsStatus_t value) {
+time_t fetch_gpsTime(gpsStatus_t value) {
 
   time_t t = timeIsValid(makeTime(value.timedate));
-
-  // show NMEA data in debug mode, useful for debugging GPS
-  ESP_LOGD(
-      TAG,
-      "GPS time: %d | GPS NMEA data: passed %d / failed: %d / with fix: %d", t,
-      gps.passedChecksum(), gps.failedChecksum(), gps.sentencesWithFix());
-
+  ESP_LOGD(TAG, "GPS time: %d", t);
   return t;
 
-} // get_gpstime()
+} // fetch_gpsTime()
 
 // GPS serial feed FreeRTos Task
 void gps_loop(void *pvParameters) {
@@ -136,6 +133,11 @@ void gps_loop(void *pvParameters) {
 #endif
     } // if
 
+    // show NMEA data in verbose mode, useful for debugging GPS
+    ESP_LOGV(TAG, "GPS NMEA data: passed %d / failed: %d / with fix: %d",
+             gps.passedChecksum(), gps.failedChecksum(),
+             gps.sentencesWithFix());
+
     delay(2); // yield to CPU
 
   } // end of infinite loop

src/irqhandler.cpp

@@ -48,7 +48,7 @@ void irqHandler(void *pvParameters) {
 // gps refresh buffer?
 #if (HAS_GPS)
     if (InterruptStatus & GPS_IRQ)
-      gps_storelocation(gps_status);
+      gps_storelocation(&gps_status);
 #endif
 
     // are cyclic tasks due?

src/main.cpp

@@ -438,6 +438,11 @@ void setup() {
 #warning you did not specify a time source, time will not be synched
 #endif
 
+  // initialize gps time
+#if (HAS_GPS)
+  gps_storetime(&gps_status);
+#endif
+
 #if (defined HAS_IF482 || defined HAS_DCF77)
   ESP_LOGI(TAG, "Starting Clock Controller...");
   clock_init();

src/timekeeper.cpp

@@ -18,10 +18,6 @@ const char timeSetSymbols[] = {'G', 'R', 'L', '?'};
 HardwareSerial IF482(2); // use UART #2 (#1 may be in use for serial GPS)
 #endif
 
-#if (HAS_GPS)
-static gpsStatus_t gps_pps_status;
-#endif
-
 Ticker timesyncer;
 
 void timeSync() { xTaskNotify(irqHandlerTask, TIMESYNC_IRQ, eSetBits); }
@@ -32,7 +28,7 @@ time_t timeProvider(void) {
 
 #if (HAS_GPS)
   // fetch recent time from last NMEA record
-  t = get_gpstime(gps_pps_status);
+  t = fetch_gpsTime(gps_status);
   if (t) {
 #ifdef HAS_RTC
     set_rtctime(t, do_mutex); // calibrate RTC
@@ -44,7 +40,7 @@ time_t timeProvider(void) {
   }
 #endif
 
-// no GPS -> fallback to RTC time while trying lora sync
+// no time from GPS -> fallback to RTC time while trying lora sync
 #ifdef HAS_RTC
   t = get_rtctime();
   if (t) {
@@ -123,11 +119,6 @@ void timepulse_start(void) {
   timerAlarmEnable(ppsIRQ);
 #endif
 
-// initialize gps time
-#if (HAS_GPS)
-  gps_storetime(gps_pps_status);
-#endif
-
   // start cyclic time sync
   timeSync(); // init systime by RTC or GPS or LORA
   timesyncer.attach(TIME_SYNC_INTERVAL * 60, timeSync);
@@ -142,9 +133,7 @@ void IRAM_ATTR CLOCKIRQ(void) {
 
   // store recent gps time, and try to get gps time if time is not synced
 #if (HAS_GPS)
-  gps_storetime(gps_pps_status);
-  if (timeSource == _unsynced)
-    timeSync();
+  gps_storetime(&gps_status);
 #endif
 
 // advance wall clock, if we have