fix timeout for flipper connection

obd2_client/src/flipper/server.py

@@ -46,7 +46,6 @@ class FlipperServer:
 
     # Timing constants
     PAGE_UPDATE_INTERVAL = 0.5  # Send PAGE every 500ms
-    CONNECTION_TIMEOUT = 10.0   # Consider disconnected after 10s of silence
 
     def __init__(
         self,
@@ -73,7 +72,6 @@ class FlipperServer:
 
         self._page_manager = PageManager()
         self._last_page_sent = 0.0
-        self._last_command_received = 0.0
 
         self._logger = get_logger("obd2_client.flipper")
         self._ip_address = "0.0.0.0"
@@ -151,7 +149,6 @@ class FlipperServer:
                 # Send periodic PAGE updates if connected
                 if self._state == ServerState.CONNECTED:
                     self._send_page_updates()
-                    self._check_connection_timeout()
 
             except Exception as e:
                 self._logger.error(f"Server error: {e}")
@@ -207,7 +204,6 @@ class FlipperServer:
             self._logger.debug(f"Unknown command: {line.strip()}")
             return
 
-        self._last_command_received = time.time()
         self._logger.debug(f"Received: {cmd.cmd_type.name}")
 
         # INIT can be received at any time (reconnection support)
@@ -252,7 +248,6 @@ class FlipperServer:
 
         # Reset state for fresh connection
         self._state = ServerState.CONNECTED
-        self._last_command_received = time.time()
         self._last_page_sent = 0.0  # Force immediate PAGE send
 
         # Reset page manager to first page
@@ -333,17 +328,6 @@ class FlipperServer:
         if (current_time - self._last_page_sent) >= self.PAGE_UPDATE_INTERVAL:
             self._send_current_page()
 
-    def _check_connection_timeout(self) -> None:
-        """Check if connection has timed out (no commands from Flipper)."""
-        if self._last_command_received == 0:
-            return
-
-        elapsed = time.time() - self._last_command_received
-        if elapsed > self.CONNECTION_TIMEOUT:
-            self._logger.warning(f"Connection timeout ({elapsed:.1f}s since last command)")
-            self._state = ServerState.IDLE
-            self._last_command_received = 0
-
     def _send_current_page(self) -> None:
         """Send current page content."""
         page = self._page_manager.get_current_page()

obd2_client/src/obd2/scanner.py

@@ -66,9 +66,12 @@ class OBD2Scanner:
         """
         import time
 
-        if use_cache and self._load_cache():
-            self._logger.info(f"Loaded {len(self._supported_pids)} PIDs from cache")
-            return self.supported_pids
+        if use_cache:
+            if self._load_cache() and len(self._supported_pids) > 0:
+                self._logger.info(f"Loaded {len(self._supported_pids)} PIDs from cache")
+                return self.supported_pids
+            else:
+                self._logger.debug("Cache empty or invalid, will scan")
 
         # Initial delay to let CAN interface and ECU stabilize
         if initial_delay > 0: