filter out geo from non-geo sensors, and publish gps for device tracking

README_HA.md

@@ -68,13 +68,21 @@ Repeaters must first be added to the auto-telemetry tracking list in RemoteTerm'
 
 If RemoteTerm already has a cached telemetry snapshot for that repeater, it republishes it on startup so HA can populate the sensors immediately instead of waiting for the next collection cycle.
 
-### Contact Device Trackers
+### Contact Devices
 
-One `device_tracker` per tracked contact. Updates passively whenever RemoteTerm hears an advertisement with GPS coordinates from that contact. No radio commands are sent -- it piggybacks on normal mesh traffic.
+One HA device per tracked contact, which can expose two kinds of entities.
+
+**GPS tracker** -- one `device_tracker`, populated from two sources:
+
+- **Advertisements** -- updates passively whenever RemoteTerm hears an advert carrying GPS coordinates from that contact. No radio commands are sent; it piggybacks on normal mesh traffic.
+- **CayenneLPP telemetry** -- if the contact also reports a GPS reading in its LPP telemetry (and is tracked for contact telemetry collection), that reading updates the tracker too. GPS is routed to the tracker, not exposed as a numeric sensor.
+
+**CayenneLPP sensors** -- if the contact is tracked for telemetry collection and reports LPP readings, a numeric sensor is created per reading, auto-detected from the data (e.g. `sensor.<contact_name>_lpp_temperature_ch1`, `_lpp_voltage_ch1`).
 
 | Entity | Description |
 |--------|-------------|
-| `device_tracker.<contact_name>` | GPS position (latitude/longitude) |
+| `device_tracker.<contact_name>` | GPS position (`latitude`/`longitude` attributes, plus `altitude` when a telemetry reading includes it) |
+| `sensor.<contact_name>_lpp_<type>_ch<n>` | CayenneLPP sensor reading (auto-detected; GPS excluded -- see tracker above) |
 
 ### Message Event Entity
 
@@ -106,7 +114,7 @@ MQTT topic paths use the 12-character node ID (first 12 hex characters of the pu
 
 - Always created: the local radio device and its entities
 - Created when selected in the HA integration: tracked repeater devices and tracked contact device trackers
-- Populated only after data exists: contact GPS trackers need an advert with GPS; repeater sensors need telemetry, although cached repeater telemetry is replayed on startup when available
+- Populated only after data exists: contact GPS trackers need an advert with GPS or a GPS reading in collected LPP telemetry; repeater sensors need telemetry, although cached repeater telemetry is replayed on startup when available
 - Message event entity: always created once the HA integration is enabled for a connected radio
 
 ## Common Automations

app/AGENTS.md

@@ -415,7 +415,7 @@ tests/
 ├── test_message_prefix_claim.py # Message prefix claim logic
 ├── test_mqtt.py                # MQTT publisher topic routing and lifecycle
 ├── test_messages_search.py     # Message search, around, forward pagination
-├── test_mqtt_ha.py             # MQTT HA (high-availability) behavior
+├── test_mqtt_ha.py             # Home Assistant MQTT Discovery fanout module
 ├── test_packet_pipeline.py     # End-to-end packet processing
 ├── test_packets_router.py      # Packets router endpoints (decrypt, maintenance)
 ├── test_path_utils.py          # Path hex rendering helpers

app/fanout/mqtt_ha.py

@@ -124,15 +124,65 @@ def _lpp_sensor_key(type_name: str, channel: int) -> str:
     return f"lpp_{type_name}_ch{channel}"
 
 
+def _is_geo_sensor(sensor: dict) -> bool:
+    """True for multi-value GPS/location readings whose value is a lat/lon dict.
+
+    These cannot be represented as a single numeric HA sensor (HA rejects the
+    nested object on a ``state_class: measurement`` entity). They are routed to
+    the contact ``device_tracker`` instead, so they are excluded from the flat
+    numeric-sensor key assignment below.
+    """
+    if sensor.get("type_name") == "gps":
+        return True
+    value = sensor.get("value")
+    return isinstance(value, dict) and "latitude" in value and "longitude" in value
+
+
+def _extract_gps_reading(lpp_sensors: list[dict]) -> dict | None:
+    """Return the first usable GPS reading as a device_tracker attributes payload.
+
+    Mirrors the ``on_contact`` advert-sourced GPS shape (``latitude``,
+    ``longitude``, ``gps_accuracy``, ``source_type``) and adds ``altitude`` when
+    the reading carries it. Returns ``None`` when there is no GPS sensor or the
+    coordinates are the ``(0, 0)`` "no fix" sentinel.
+    """
+    for sensor in lpp_sensors or []:
+        if not _is_geo_sensor(sensor):
+            continue
+        value = sensor.get("value")
+        if not isinstance(value, dict):
+            continue
+        lat = value.get("latitude")
+        lon = value.get("longitude")
+        if lat is None or lon is None or (lat == 0.0 and lon == 0.0):
+            continue
+        attrs: dict[str, Any] = {
+            "latitude": lat,
+            "longitude": lon,
+            "gps_accuracy": 0,
+            "source_type": "gps",
+        }
+        alt = value.get("altitude")
+        if alt is not None:
+            attrs["altitude"] = alt
+        return attrs
+    return None
+
+
 def _assign_lpp_keys(lpp_sensors: list[dict]) -> list[tuple[dict, str, int]]:
     """Pair each LPP sensor dict with a disambiguated flat key and occurrence.
 
     First occurrence keeps the base key (``lpp_temperature_ch1``), occurrence=1;
     subsequent duplicates of the same (type_name, channel) get ``_2``, ``_3``, etc.
+
+    Multi-value GPS/location sensors are skipped here: they are surfaced through
+    the device_tracker (see ``_extract_gps_reading``), not as numeric sensors.
     """
     counts: dict[str, int] = {}
     result: list[tuple[dict, str, int]] = []
     for sensor in lpp_sensors:
+        if _is_geo_sensor(sensor):
+            continue
         base = _lpp_sensor_key(sensor.get("type_name", "unknown"), sensor.get("channel", 0))
         n = counts.get(base, 0) + 1
         counts[base] = n
@@ -616,7 +666,15 @@ class MqttHaModule(FanoutModule):
         # Message event entity (namespaced to this radio)
         configs.append(_message_event_discovery_config(self._prefix, self._radio_key, radio_name))
 
-        self._discovery_topics = [topic for topic, _ in configs]
+        # Clear any retained discovery configs we previously published but no
+        # longer generate (e.g. the legacy broken GPS numeric sensor, now routed
+        # to the device_tracker, or sensors from an untracked node). Without this
+        # the broker's retained config would keep recreating the dead entity.
+        new_topics = [topic for topic, _ in configs]
+        stale = [t for t in self._discovery_topics if t not in new_topics]
+        if stale:
+            await self._clear_retained_topics(stale)
+        self._discovery_topics = new_topics
 
         for topic, payload in configs:
             await self._publisher.publish(topic, payload, retain=True)
@@ -812,6 +870,14 @@ class MqttHaModule(FanoutModule):
 
         await self._publisher.publish(f"{self._prefix}/{nid}/telemetry", payload)
 
+        # Route any GPS/location reading to the contact device_tracker instead of
+        # a numeric sensor. Only tracked contacts have a device_tracker entity;
+        # repeaters expose no tracker, so their GPS readings are simply dropped.
+        if not is_repeater:
+            gps_attrs = _extract_gps_reading(lpp_sensors)
+            if gps_attrs is not None:
+                await self._publisher.publish(f"{self._prefix}/{nid}/gps", gps_attrs)
+
     async def on_message(self, data: dict) -> None:
         if not self._publisher.connected or not self._radio_key:
             return

frontend/src/components/settings/SettingsFanoutSection.tsx

@@ -1179,14 +1179,22 @@ function MqttHaConfigEditor({
 
           <div>
             <span className="font-medium text-foreground">Per tracked contact</span> &mdash; updates
-            passively when advertisements with GPS are heard. Shown for one contact; a tracker is
-            created for each selected contact.
+            passively when advertisements with GPS are heard, and from any GPS reading in the
+            contact&apos;s CayenneLPP telemetry. Shown for one contact; a tracker is created for each
+            selected contact.
             <ul className="mt-0.5 ml-4 list-disc space-y-0.5">
               <li>
                 <code className="text-[0.6875rem]">
                   {`device_tracker.meshcore_${exampleContactNodeId}`}
                 </code>{' '}
-                &mdash; latitude/longitude
+                &mdash; latitude/longitude (plus altitude when telemetry provides it)
+              </li>
+              <li>
+                <code className="text-[0.6875rem]">
+                  {`sensor.meshcore_${exampleContactNodeId}_lpp_temperature_ch1`}
+                </code>
+                , etc. &mdash; CayenneLPP sensors (when the contact is tracked for telemetry; GPS
+                goes to the tracker above)
               </li>
             </ul>
           </div>

tests/test_mqtt_ha.py

@@ -8,8 +8,11 @@ import pytest
 from app.fanout.mqtt_ha import (
     MqttHaModule,
     _assign_lpp_keys,
+    _contact_telemetry_payload,
     _contact_tracker_discovery_config,
     _device_payload,
+    _extract_gps_reading,
+    _is_geo_sensor,
     _lpp_discovery_configs,
     _lpp_sensor_key,
     _message_event_discovery_config,
@@ -254,6 +257,148 @@ class TestMqttHaFiltering:
         assert mod._publisher.publish.call_args.kwargs.get("retain") is not True
 
 
+class TestLppGpsHandling:
+    """GPS/location LPP readings route to the device_tracker, not numeric sensors."""
+
+    _GPS_SENSOR = {
+        "channel": 1,
+        "type_name": "gps",
+        "value": {"latitude": 21.0021, "longitude": -21.0021, "altitude": 125.3},
+    }
+
+    def test_is_geo_sensor_detects_gps_type(self):
+        assert _is_geo_sensor(self._GPS_SENSOR) is True
+
+    def test_is_geo_sensor_detects_dict_value(self):
+        assert (
+            _is_geo_sensor(
+                {
+                    "channel": 1,
+                    "type_name": "location",
+                    "value": {"latitude": 1.0, "longitude": 2.0},
+                }
+            )
+            is True
+        )
+
+    def test_is_geo_sensor_false_for_scalar(self):
+        assert _is_geo_sensor({"channel": 1, "type_name": "voltage", "value": 4.03}) is False
+
+    def test_assign_lpp_keys_skips_gps(self):
+        sensors = [
+            {"channel": 1, "type_name": "voltage", "value": 4.03},
+            self._GPS_SENSOR,
+            {"channel": 1, "type_name": "temperature", "value": 24.5},
+        ]
+        keys = [key for _, key, _ in _assign_lpp_keys(sensors)]
+        assert keys == ["lpp_voltage_ch1", "lpp_temperature_ch1"]
+
+    def test_lpp_discovery_skips_gps(self):
+        topics = [
+            topic
+            for topic, _ in _lpp_discovery_configs(
+                "meshcore", "ccdd11223344", {}, [self._GPS_SENSOR], "t"
+            )
+        ]
+        assert topics == []
+
+    def test_contact_telemetry_payload_excludes_gps(self):
+        payload = _contact_telemetry_payload(
+            {
+                "lpp_sensors": [
+                    {"channel": 1, "type_name": "voltage", "value": 4.03},
+                    self._GPS_SENSOR,
+                ]
+            }
+        )
+        assert payload == {"lpp_voltage_ch1": 4.03}
+        assert "lpp_gps_ch1" not in payload
+
+    def test_extract_gps_reading(self):
+        attrs = _extract_gps_reading([self._GPS_SENSOR])
+        assert attrs == {
+            "latitude": 21.0021,
+            "longitude": -21.0021,
+            "gps_accuracy": 0,
+            "source_type": "gps",
+            "altitude": 125.3,
+        }
+
+    def test_extract_gps_reading_skips_zero_fix(self):
+        assert (
+            _extract_gps_reading(
+                [{"channel": 1, "type_name": "gps", "value": {"latitude": 0.0, "longitude": 0.0}}]
+            )
+            is None
+        )
+
+    def test_extract_gps_reading_none_without_gps(self):
+        assert _extract_gps_reading([{"channel": 1, "type_name": "voltage", "value": 4.03}]) is None
+
+    @pytest.mark.asyncio
+    async def test_on_telemetry_routes_contact_gps_to_tracker(self):
+        key = "ccdd11223344"
+        mod = MqttHaModule("test", _base_config(tracked_contacts=[key]))
+        mod._publisher = MagicMock()
+        mod._publisher.connected = True
+        mod._publisher.publish = AsyncMock()
+
+        await mod.on_telemetry(
+            {
+                "public_key": key,
+                "lpp_sensors": [
+                    {"channel": 1, "type_name": "voltage", "value": 4.03},
+                    self._GPS_SENSOR,
+                ],
+            }
+        )
+
+        topics = {c[0][0]: c[0][1] for c in mod._publisher.publish.call_args_list}
+        # Numeric telemetry still published, without the GPS object.
+        assert f"meshcore/{_node_id(key)}/telemetry" in topics
+        assert "lpp_gps_ch1" not in topics[f"meshcore/{_node_id(key)}/telemetry"]
+        # GPS routed to the device_tracker attributes topic.
+        gps_payload = topics[f"meshcore/{_node_id(key)}/gps"]
+        assert gps_payload["latitude"] == 21.0021
+        assert gps_payload["longitude"] == -21.0021
+        assert gps_payload["altitude"] == 125.3
+
+    @pytest.mark.asyncio
+    async def test_on_telemetry_repeater_does_not_publish_gps(self):
+        key = "ccdd11223344"
+        mod = MqttHaModule("test", _base_config(tracked_repeaters=[key]))
+        mod._publisher = MagicMock()
+        mod._publisher.connected = True
+        mod._publisher.publish = AsyncMock()
+
+        await mod.on_telemetry(
+            {"public_key": key, "battery_volts": 4.1, "lpp_sensors": [self._GPS_SENSOR]}
+        )
+
+        topics = [c[0][0] for c in mod._publisher.publish.call_args_list]
+        assert f"meshcore/{_node_id(key)}/gps" not in topics
+
+
+class TestStaleDiscoveryCleanup:
+    @pytest.mark.asyncio
+    async def test_publish_discovery_clears_removed_topics(self):
+        mod = MqttHaModule("test", _base_config())
+        mod._radio_key = "aabbccddeeff"
+        mod._publisher = MagicMock()
+        mod._publisher.connected = True
+        mod._publisher.publish = AsyncMock()
+        mod._clear_retained_topics = AsyncMock()
+        # Simulate a previously-published topic that the new run no longer emits.
+        stale_topic = "homeassistant/sensor/meshcore_aabbccddeeff/lpp_gps_ch1/config"
+        mod._discovery_topics = [stale_topic]
+
+        await mod._publish_discovery()
+
+        cleared = mod._clear_retained_topics.call_args[0][0]
+        assert stale_topic in cleared
+        assert stale_topic not in mod._discovery_topics
+
+
 class TestMqttHaHealth:
     @pytest.mark.asyncio
     async def test_on_health_publishes_state(self):