Add trip history and route replay

Co-authored-by: Copilot <[email protected]>

modules/app_obd.py

@@ -14,6 +14,7 @@ SENSOR_POLL_INTERVAL = 5
 
 status = None
 speed = 0
+speed_updated_at = None
 rpm = None
 coolant_temp = None
 fuel_level = None
@@ -233,6 +234,12 @@ def get_speedtime():
     return [time_now, speed]
 
 
+def get_fresh_speed(max_age=5):
+    if speed_updated_at is None or time.monotonic() - speed_updated_at > max_age:
+        return None
+    return speed
+
+
 def obd_connection():
     """Emit current state for a newly connected browser and ensure OBD is running."""
     start_obd()
@@ -245,7 +252,7 @@ def obd_connection():
 
 
 def obd_speed():
-    global speed
+    global speed, speed_updated_at
     with obd_speed_lock:
         while not stop_speed.is_set() and _is_car_connected():
             response = _query(obd.commands.SPEED)
@@ -256,6 +263,7 @@ def obd_speed():
                 print(app_gps.get_gps())
             else:
                 speed = round(response.value.to("kph").magnitude, 1)
+                speed_updated_at = time.monotonic()
                 print("Speed:", speed, "kph")
 
             app_events.socketio.emit("obd_speed", get_speedtime())