add UBX-MON-VER support and surface device identification in CLI/GUI

Add the Ver message parser and a fixed UbxQuery (was unused and had a
broken semaphore/state bug) to poll MON-VER once on connect. The CLI
prints hw/sw version and extensions; the GUI polls it per receiver,
pre-fills the read-only ID field with a connection counter and
rewrites it from the MOD= extension once the device answers, and
propagates the resolved display name to the Sky and Plot tabs so they
no longer show the stale placeholder ID.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XM4FNUjhu9x8df5Dp1hHvd

gui/connection_tab.py

@@ -1,4 +1,4 @@
-import sys, os
+import sys, os, itertools
 
 _root = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
 _gui  = os.path.dirname(os.path.abspath(__file__))
@@ -19,6 +19,8 @@ from backend.file_backend import source_id_from_path
 BAUD_RATES = ['4800', '9600', '19200', '38400', '57600', '115200',
               '230400', '460800', '921600']
 
+_connection_counter = itertools.count(1)
+
 
 class _StatusDot(QLabel):
     def __init__(self):
@@ -45,10 +47,11 @@ class ConnectionRow(QWidget):
         layout.setContentsMargins(4, 2, 4, 2)
         layout.setSpacing(6)
 
-        # ── Receiver ID ──────────────────────────────────────────────────────
+        # ── Receiver ID (read-only: pre-filled with a counter, rewritten from
+        #    MON-VER once the device answers, or derived from the file path) ──
         layout.addWidget(QLabel("ID:"))
         self._id_edit = QLineEdit()
-        self._id_edit.setPlaceholderText("receiver-id")
+        self._id_edit.setReadOnly(True)
         self._id_edit.setFixedWidth(110)
         layout.addWidget(self._id_edit)
 
@@ -125,6 +128,11 @@ class ConnectionRow(QWidget):
         layout.addWidget(self._stack)
         layout.addStretch()
 
+        # ── Device identification (read-only, from MON-VER on connect) ────────
+        self._version_label = QLabel("")
+        self._version_label.setStyleSheet("color: #888888; font-size: 11px;")
+        layout.addWidget(self._version_label)
+
         # ── Status / buttons ─────────────────────────────────────────────────
         self._dot = _StatusDot()
         layout.addWidget(self._dot)
@@ -141,6 +149,8 @@ class ConnectionRow(QWidget):
 
         if config:
             self.apply_config(config)
+        else:
+            self._id_edit.setText(f"conn-{next(_connection_counter)}")
 
     # ── File browse ──────────────────────────────────────────────────────────
 
@@ -199,10 +209,17 @@ class ConnectionRow(QWidget):
         self._connected = connected
         self._dot.set_connected(connected)
         self._conn_btn.setText("Disconnect" if connected else "Connect")
-        for w in [self._id_edit, self._type_combo, self._host_edit,
+        for w in [self._type_combo, self._host_edit,
                   self._port_spin, self._ser_combo, self._baud_combo,
                   self._file_edit, self._delay_spin]:
             w.setEnabled(not connected)
+        if not connected:
+            self._version_label.setText("")
+
+    def set_version_info(self, device_id: str, sw_version: str):
+        if device_id:
+            self._id_edit.setText(device_id)
+        self._version_label.setText(sw_version)
 
     # ── Slots ────────────────────────────────────────────────────────────────
 
@@ -287,6 +304,7 @@ class ConnectionTab(QWidget):
         outer.addLayout(bottom)
 
         model.connection_changed.connect(self._on_connection_changed)
+        model.version_update.connect(self._on_version_update)
 
     # ── History combo ─────────────────────────────────────────────────────────
 
@@ -332,3 +350,9 @@ class ConnectionTab(QWidget):
                 break
         if connected:
             self._refresh_history_combo()
+
+    def _on_version_update(self, rid: str, device_id: str, sw_version: str):
+        for row in self._rows:
+            if row.get_receiver_id() == rid:
+                row.set_version_info(device_id, sw_version)
+                break

gui/data_model.py

@@ -1,4 +1,4 @@
-import sys, os, json, dataclasses, time
+import sys, os, json, dataclasses, time, threading
 from dataclasses import dataclass
 from PyQt5.QtCore import QObject, QTimer, pyqtSignal
 
@@ -13,6 +13,8 @@ from nmea.packetizer import NmeaPacketizer
 from ubx.packetizer import UbxPacketizer
 from backend.network_backend import NetworkBackend
 from ubx.ubx import frame_create
+from ubx.query import UbxQuery
+from ubx.messages import Ver
 
 GNSS_NAMES = {
     0: 'GPS', 1: 'SBAS', 2: 'Galileo', 3: 'BeiDou',
@@ -35,6 +37,14 @@ LRU_PATH = os.path.expanduser('~/.nmea_client_gui.json')
 LRU_MAX  = 20
 
 
+def _device_id_from_ver(ver: dict) -> str:
+    for ext in ver.get('extensions', []):
+        s = ext.get('extension', '')
+        if s.startswith('MOD='):
+            return s[len('MOD='):]
+    return ver.get('hw_version', '')
+
+
 @dataclass
 class SatelliteData:
     gnss_id:     int
@@ -85,12 +95,15 @@ class _ReceiverState:
         self.backend           = None
         self.transceiver       = None
         self.poll_timer        = None
+        self.device_id:  str   = ''
+        self.sw_version: str   = ''
 
 
 class ReceiverManager(QObject):
     satellite_update   = pyqtSignal(str, list)           # rid, [SatelliteData]
     pdop_update        = pyqtSignal(str, float, float)   # rid, pdop, timestamp
     connection_changed = pyqtSignal(str, bool)           # rid, connected
+    version_update     = pyqtSignal(str, str, str)       # rid, device_id, sw_version
     receiver_added     = pyqtSignal(str)
     receiver_removed   = pyqtSignal(str)
     _connection_lost   = pyqtSignal(str)                 # internal: backend thread -> GUI thread
@@ -101,6 +114,7 @@ class ReceiverManager(QObject):
         self._configs: dict = {}
         self._lru:     list = self._load_lru()
         self._connection_lost.connect(self._handle_connection_lost)
+        self.version_update.connect(self._on_version)
 
     # ── LRU ──────────────────────────────────────────────────────────────────
 
@@ -197,6 +211,11 @@ class ReceiverManager(QObject):
             GsaQtListener(rid, lambda p, t, r=rid: self._on_pdop(r, p, t))
         )
 
+        ver_query = None
+        if config.conn_type != 'file':
+            ver_query = UbxQuery(xcvr, Ver())
+            ubx_sink.register_listener(ver_query)
+
         backend.connect()
         backend.start()
 
@@ -211,9 +230,18 @@ class ReceiverManager(QObject):
             timer.start()
             state.poll_timer = timer
 
+            threading.Thread(target=self._poll_version, args=(rid, ver_query),
+                             daemon=True).start()
+
         self._push_lru(config)
         self.connection_changed.emit(rid, True)
 
+    def _poll_version(self, rid: str, query: UbxQuery):
+        ver = query.poll()
+        if ver is None:
+            return
+        self.version_update.emit(rid, _device_id_from_ver(ver), ver['sw_version'])
+
     def _handle_connection_lost(self, rid: str):
         state = self._states.get(rid)
         if not state or not state.connected:
@@ -237,7 +265,10 @@ class ReceiverManager(QObject):
         state.backend     = None
         state.transceiver = None
         state.satellites.clear()
+        state.device_id   = ''
+        state.sw_version  = ''
         self.connection_changed.emit(rid, False)
+        self.version_update.emit(rid, '', '')
 
     def _poll_ubx(self, rid: str):
         state = self._states.get(rid)
@@ -263,6 +294,14 @@ class ReceiverManager(QObject):
     def get_config(self, rid: str):
         return self._configs.get(rid)
 
+    def get_version_info(self, rid: str):
+        s = self._states.get(rid)
+        return (s.device_id, s.sw_version) if s else ('', '')
+
+    def display_name(self, rid: str) -> str:
+        s = self._states.get(rid)
+        return (s.device_id if s and s.device_id else rid)
+
     def get_satellites(self, rids: list) -> list:
         result = []
         for rid in rids:
@@ -288,3 +327,9 @@ class ReceiverManager(QObject):
             return
         state.pdop = pdop
         self.pdop_update.emit(rid, pdop, ts)
+
+    def _on_version(self, rid: str, device_id: str, sw_version: str):
+        state = self._states.get(rid)
+        if state:
+            state.device_id  = device_id
+            state.sw_version = sw_version

gui/plot_widget.py

@@ -316,6 +316,7 @@ class SinglePlotWidget(QWidget):
         model.receiver_removed.connect(self._on_receiver_removed)
         model.satellite_update.connect(self._on_sat_update)
         model.pdop_update.connect(self._on_pdop_update)
+        model.version_update.connect(self._on_version_update)
 
     # ── UI ────────────────────────────────────────────────────────────────────
 
@@ -425,7 +426,7 @@ class SinglePlotWidget(QWidget):
         for rid in selected:
             ts_dq, v_dq = self._data.get(rid, ([], []))
             if ts_dq:
-                snapshot[rid] = (list(ts_dq), list(v_dq))
+                snapshot[self._model.display_name(rid)] = (list(ts_dq), list(v_dq))
         w, h = self._canvas.width(), self._canvas.height()
         if w > 0 and h > 0:
             self._thread.submit(snapshot, self._y_cb.currentText(), w, h)
@@ -485,6 +486,15 @@ class SinglePlotWidget(QWidget):
         self._rebuild_val_combo()
         self._submit_render()
 
+    def _on_version_update(self, rid: str, device_id: str, sw_version: str):
+        label = self._model.display_name(rid)
+        for i in range(self._src_list.count()):
+            item = self._src_list.item(i)
+            if item.data(Qt.UserRole) == rid:
+                item.setText(f" {label} ")
+                break
+        self._submit_render()
+
     def _on_sat_update(self, rid: str, sats: list):
         selected = set(self._selected_rids())
         if rid not in selected:

gui/sky_tab.py

@@ -34,6 +34,7 @@ class SkyTab(QWidget):
         self._pdop:        dict = {}   # rid -> float
         self._info_cards:  dict = {}   # rid -> QFrame
         self._info_labels: dict = {}   # rid -> (lbl_pdop, lbl_visible, lbl_used)
+        self._name_labels: dict = {}   # rid -> QLabel (receiver display name)
         self._trail:       dict = {}   # (rid, gnss_id, sv_id) -> deque[(elev, azim)]
         self._hi_timers:   dict = {}   # (rid, gnss_id, sv_id) -> QTimer
 
@@ -113,6 +114,7 @@ class SkyTab(QWidget):
         model.receiver_removed.connect(self._on_receiver_removed)
         model.satellite_update.connect(self._on_sat_update)
         model.pdop_update.connect(self._on_pdop_update)
+        model.version_update.connect(self._on_version_update)
 
     # ── Source list management ────────────────────────────────────────────────
 
@@ -136,6 +138,7 @@ class SkyTab(QWidget):
             cl.addWidget(w)
         self._info_cards[rid]  = card
         self._info_labels[rid] = (lbl_pdop, lbl_visible, lbl_used)
+        self._name_labels[rid] = name_lbl
         self._info_layout.insertWidget(self._info_layout.count() - 1, card)
 
     def _on_receiver_removed(self, rid: str):
@@ -151,6 +154,20 @@ class SkyTab(QWidget):
             self._info_layout.removeWidget(card)
             card.deleteLater()
         self._info_labels.pop(rid, None)
+        self._name_labels.pop(rid, None)
+        self._refresh_immediate()
+
+    def _on_version_update(self, rid: str, device_id: str, sw_version: str):
+        label = self._model.display_name(rid)
+        for i in range(self._src_list.count()):
+            item = self._src_list.item(i)
+            if item.data(Qt.UserRole) == rid:
+                item.setText(f"  {label}  ")
+                break
+        lbl = self._name_labels.get(rid)
+        if lbl:
+            lbl.setText(f"<b>{label}</b>")
+        self._table_keys = []   # force a full rebuild so the Receiver column updates
         self._refresh_immediate()
 
     def _selected_rids(self) -> set:
@@ -297,7 +314,7 @@ class SkyTab(QWidget):
             self._table.setItem(row, 3, cell(f"{sat.azimuth:.0f}"))
             self._table.setItem(row, 4, cell(f"{sat.cno:.1f}"))
             self._table.setItem(row, 5, cell("✓" if sat.used_in_fix else ""))
-            self._table.setItem(row, 6, cell(rid))
+            self._table.setItem(row, 6, cell(self._model.display_name(rid)))
             msg_item = QTableWidgetItem("")
             msg_item.setTextAlignment(Qt.AlignCenter)
             msg_item.setBackground(brush)

main.py

@@ -3,6 +3,7 @@ import time
 import json
 import signal
 import argparse
+import threading
 
 from backend.network_backend import NetworkBackend
 from backend.serial_backend  import SerialBackend
@@ -16,8 +17,9 @@ from nmea.messages    import Gll, Gsa, Gsv, Gga, Rmc
 from ubx.ubx          import frame_create
 from ubx.msg_types    import *
 from ubx.packetizer   import UbxPacketizer
-from ubx.messages     import Sig, Sat, RawX, UbxMsg
+from ubx.messages     import Sig, Sat, RawX, Ver, UbxMsg
 from ubx.listener     import UbxListener
+from ubx.query        import UbxQuery
 
 
 # ---------------------------------------------------------------------------
@@ -87,7 +89,8 @@ def _make_listeners(name: str):
 
 
 def wire_source(name: str, backend, log_dir: str | None,
-                loggers: list, transceivers: dict, pacer_delay: float = 0.0):
+                loggers: list, transceivers: dict, ver_queries: dict,
+                pacer_delay: float = 0.0):
 	xcvr = Transceiver(name)
 	backend.register_xcvr(xcvr)
 	transceivers[name] = xcvr
@@ -104,6 +107,10 @@ def wire_source(name: str, backend, log_dir: str | None,
 
 	nmea_rx, ubx_rx = _make_listeners(name)
 
+	ver_query = UbxQuery(xcvr, Ver())
+	ubx_rx.append(ver_query)
+	ver_queries[name] = ver_query
+
 	if pacer_delay > 0:
 		nmea_pacer = ReplayPacer(pacer_delay)
 		ubx_pacer  = ReplayPacer(pacer_delay)
@@ -157,6 +164,7 @@ if __name__ == '__main__':
 	backends    = []
 	loggers     = []
 	transceivers = {}
+	ver_queries = {}
 
 	# Network sources → one shared NetworkBackend
 	net_sources = [s for s in sources if s['type'] == 'network']
@@ -165,13 +173,14 @@ if __name__ == '__main__':
 		                         for s in net_sources])
 		backends.append(net_be)
 		for s in net_sources:
-			wire_source(s['name'], net_be, log_dir, loggers, transceivers)
+			wire_source(s['name'], net_be, log_dir, loggers, transceivers, ver_queries)
 
 	# Serial sources → one SerialBackend each
-	for s in [s for s in sources if s['type'] == 'serial']:
+	serial_sources = [s for s in sources if s['type'] == 'serial']
+	for s in serial_sources:
 		ser_be = SerialBackend(s['device'], s.get('baudrate', 115200))
 		backends.append(ser_be)
-		wire_source(s['name'], ser_be, log_dir, loggers, transceivers)
+		wire_source(s['name'], ser_be, log_dir, loggers, transceivers, ver_queries)
 
 	# File sources → one shared FileBackend (no secondary logging)
 	file_sources = [s for s in sources if s['type'] == 'file']
@@ -182,7 +191,8 @@ if __name__ == '__main__':
 			name = source_id_from_path(s['path'])
 			if name:
 				wire_source(name, file_be, log_dir=None, loggers=loggers,
-				            transceivers=transceivers, pacer_delay=delay)
+				            transceivers=transceivers, ver_queries=ver_queries,
+				            pacer_delay=delay)
 
 	signal.signal(signal.SIGINT,
 	              lambda sig, frm: handler(sig, frm, backends, loggers))
@@ -191,6 +201,21 @@ if __name__ == '__main__':
 		be.connect()
 		be.start()
 
+	# Poll MON-VER once per live (network/serial) source, off the main thread
+	# since UbxQuery.poll() blocks until the response frame arrives.
+	def report_version(name: str, query: UbxQuery):
+		ver = query.poll()
+		if ver is None:
+			return
+		ext = '; '.join(e['extension'] for e in ver['extensions'])
+		print(f"{name}: device hw={ver['hw_version']} sw={ver['sw_version']}"
+		      + (f" ({ext})" if ext else ""))
+
+	for s in net_sources + serial_sources:
+		name = s['name']
+		threading.Thread(target=report_version, args=(name, ver_queries[name]),
+		                 daemon=True).start()
+
 	# Poll loop – only meaningful for network/serial sources
 	net_names = [s['name'] for s in net_sources]
 	if net_names:

ubx/messages/__init__.py

@@ -1,3 +1,4 @@
 from ubx.messages.msg import UbxMsg
 from ubx.messages.nav import Sig, Sat
 from ubx.messages.rxm import RawX
+from ubx.messages.mon import Ver

ubx/messages/mon.py

@@ -0,0 +1,32 @@
+import struct
+from ubx.messages.msg import UbxMsg
+
+class Ver(UbxMsg):
+	def __init__(self):
+		UbxMsg.__init__(self, 0x0A, 0x04)
+
+	class Group1:
+		@classmethod
+		def from_bytes(cls, data: bytes):
+			obj = Ver.Group1()
+			obj.extension = data[0:30].split(b"\x00", 1)[0].decode("ascii", errors="replace")
+			return obj.__dict__
+
+	@classmethod
+	def from_bytes(cls, data: bytes):
+		obj = Ver()
+		obj.sw_version = data[0:30].split(b"\x00", 1)[0].decode("ascii", errors="replace")
+		obj.hw_version = data[30:40].split(b"\x00", 1)[0].decode("ascii", errors="replace")
+		obj.extensions = []
+		offset = 40
+		remain = len(data) - offset
+		group_size = 30
+		n = offset
+		while remain >= group_size:
+			extension = cls.Group1.from_bytes(data[n:n + group_size])
+			n += group_size
+			remain -= group_size
+			obj.extensions.append(extension)
+		if remain:
+			print(f"Ver.from_bytes: {remain} trailing bytes unparsed (payload size mismatch)")
+		return obj.__dict__

ubx/query.py

@@ -3,30 +3,25 @@ from ubx.ubx import frame_parse, frame_create
 from ubx.messages.msg import UbxMsg
 from transceiver import Transceiver
 from ubx.listener import UbxListener
-from threading import BoundedSemaphore
+from threading import Event
 
 class UbxQuery(UbxListener):
 	def __init__(self, transceiver: Transceiver, msg: UbxMsg):
 		UbxListener.__init__(self, msg)
 		self.transceiver = transceiver
-		self.sema = BoundedSemaphore()
+		self.result = None
+		self.event = Event()
 
 	def on_recv(self, msg: MsgContainer):
 		if self.is_msg(msg):
 			data, hdr = frame_parse(msg.data)
-			msg_parsed = self.msg.from_bytes(data)
+			self.result = self.msg.from_bytes(data)
-			self.msg = msg_parsed
+			self.event.set()
-			self.sema.release()
 
 	def poll(self):
+		self.event.clear()
 		frame = frame_create(self.msg.mclass, self.msg.mid, b'')
 		self.transceiver.send(frame)
-		self.sema.acquire()
+		self.event.wait()
-		print(self.msg)
+		return self.result
-
-	def query(self, data: bytes):
-		frame = frame_create(0x01, 0x35, b'')
-		self.transceiver.send(frame)
-		self.sema.acquire()
-		print(self.msg)