truma_inetbox: implement master mode auto-discovery and device scanning

udp_lin_receiver: add option to suppress repeated identical messages

tools/udp_lin_receiver.py

@@ -77,6 +77,7 @@ def run():
     ap.add_argument("--duration", type=float, default=0.0, help="Stop after N seconds (0 = no limit)")
     ap.add_argument("--quiet", action="store_true", help="No console output, only CSV")
     ap.add_argument("--pid-diff", action="store_true", help="Track textual 'PID ..' lines and only print when data changes")
+    ap.add_argument("--suppress-repeats", action="store_true", help="Suppress repeated identical messages (shows first + count)")
     ap.add_argument("--buffer", type=int, default=4096, help="Receive buffer size (default: 4096)")
     args = ap.parse_args()
 
@@ -101,6 +102,9 @@ def run():
 
         start = time.time()
         last_by_pid: Dict[int, Tuple[int, ...]] = {}
+        last_message = None
+        repeat_count = 0
+        last_display_time = 0
 
         while True:
             if args.duration and (time.time() - start) >= args.duration:
@@ -129,6 +133,33 @@ def run():
 
             # Console output
             if not args.quiet:
+                # Format the display message
+                if is_text and as_text:
+                    display_msg = f"{ts} {src_ip}:{src_port} ({size}B) TEXT: {as_text}"
+                else:
+                    display_msg = f"{ts} {src_ip}:{src_port} ({size}B) HEX:  {hexstr}"
+                
+                # Handle repeat suppression
+                if args.suppress_repeats:
+                    current_msg_key = as_text if is_text else hexstr
+                    current_time = time.time()
+                    
+                    if current_msg_key == last_message:
+                        repeat_count += 1
+                        # Show periodic updates for long repeated sequences
+                        if current_time - last_display_time > 5.0:  # Every 5 seconds
+                            print(f"... repeated {repeat_count} times (last: {ts})")
+                            last_display_time = current_time
+                    else:
+                        # Message changed
+                        if repeat_count > 0:
+                            print(f"... repeated {repeat_count} times total")
+                        print(display_msg)
+                        last_message = current_msg_key
+                        repeat_count = 0
+                        last_display_time = current_time
+                    continue
+
                 if args.pid_diff and is_text:
                     parsed = maybe_parse_pid_and_data(as_text)
                     if parsed:
@@ -140,10 +171,7 @@ def run():
                         continue
 
                 # default console print
-                if is_text and as_text:
-                    print(f"{ts} {src_ip}:{src_port} ({size}B) TEXT: {as_text}")
-                else:
-                    print(f"{ts} {src_ip}:{src_port} ({size}B) HEX:  {hexstr}")
+                print(display_msg)
 
 
 if __name__ == "__main__":