now a working radio controller

HOWTO.md

@@ -506,6 +506,7 @@ events:
 
 Volume actions are also available as `denon.volume_up` and
 `denon.volume_down`. Each call sends five volume steps to the receiver.
+`denon.volume_mute` explicitly mutes the main output.
 
 The Denon receiver connection is also configured in `events.yaml`. Power
 actions use Denon's HTTP control endpoint; set **Settings → Network → Network
@@ -534,4 +535,27 @@ After changing `events.yaml`, restart the listener:
 ```bash
 sudo systemctl restart zigbee-events.service
 ```
+
+### HEOS favorite stations
+
+The receiver's HEOS Favorites can be discovered and played through its CLI
+service on port 1255. The library resolves the player and Favorites source IDs
+dynamically:
+
+```bash
+python3 lib_heos.py list
+python3 lib_heos.py play 1
+python3 lib_heos.py play "NPO Radio 2"
+```
+
+Favorite numbers are the current 1-based positions shown by `list`. Names are
+matched case-insensitively. Playing a favorite starts playback on the first
+HEOS player returned by the receiver.
+
+`denon.next` checks the AVR power state before changing stations. In standby it
+starts favorite 1. When powered on, it advances only if the current station is
+in HEOS Favorites, wrapping the final favorite back to the first. It does
+nothing when another source or a non-favorite station is playing.
+`denon.previous` has the same rules in reverse and wraps favorite 1 back to the
+final favorite.
 - [RRDtool graph elements](https://oss.oetiker.ch/rrdtool/doc/rrdgraph_graph.en.html)

events.yaml

@@ -32,9 +32,12 @@ devices:
     enabled: true
     events:
       single_button_1: denon.on
-      single_button_2: denon.off
-      single_button_3: denon.previous
-      single_button_4: denon.next
+      long_button_1: denon.off
+      single_button_2: denon.previous
+      long_button_2: denon.next
+      single_button_3: denon.volume_down
+      long_button_3: denon.volume_mute
+      single_button_4: denon.volume_up
 
   - name: Device 2
     topic: zigbee2mqtt/CHANGE_ME_DEVICE_2

lib_denon.py

@@ -3,6 +3,7 @@
 from __future__ import annotations
 
 import argparse
+import socket
 import ssl
 import sys
 from collections.abc import Callable
@@ -10,6 +11,8 @@ from urllib.error import URLError
 from urllib.parse import quote
 from urllib.request import Request, urlopen
 
+import lib_heos
+
 
 _host = "192.168.178.177"
 _port = 8080
@@ -54,12 +57,44 @@ def off() -> None:
     _command("PWSTANDBY")
 
 
+def _power_state() -> str:
+    """Return ON or STANDBY using Denon's control-protocol status query."""
+    try:
+        with socket.create_connection((_host, 23), timeout=_timeout) as connection:
+            connection.settimeout(_timeout)
+            connection.sendall(b"PW?\r")
+            with connection.makefile("r", encoding="ascii", newline="\r") as stream:
+                while line := stream.readline():
+                    response = line.strip()
+                    if response.startswith("PW"):
+                        state = response[2:]
+                        if state in {"ON", "STANDBY"}:
+                            return state
+    except OSError as error:
+        raise RuntimeError(f"Cannot query Denon power state: {error}") from error
+    raise RuntimeError("Denon did not return a valid power state")
+
+
 def next() -> None:
-    """Select the next preset or source."""
+    """Play the next HEOS favorite according to the receiver's power state."""
+    lib_heos.configure(_host, timeout=_timeout)
+    if _power_state() == "STANDBY":
+        lib_heos.play_favorite(1)
+        return
+    # Deliberately do nothing when the receiver is on but its current media is
+    # not one of the configured HEOS favorites.
+    lib_heos.next_favorite()
 
 
 def previous() -> None:
-    """Select the previous preset or source."""
+    """Play the previous HEOS favorite according to the receiver's power state."""
+    lib_heos.configure(_host, timeout=_timeout)
+    if _power_state() == "STANDBY":
+        lib_heos.play_favorite(1)
+        return
+    # Deliberately do nothing when the receiver is on but its current media is
+    # not one of the configured HEOS favorites.
+    lib_heos.previous_favorite()
 
 
 def volume_up() -> None:
@@ -74,12 +109,25 @@ def volume_down() -> None:
         _command("MVDOWN")
 
 
+def volume_mute() -> None:
+    """Mute the volume."""
+    _command("MUON")
+
+
 def main() -> int:
     """Run a receiver action from the command line."""
     parser = argparse.ArgumentParser(description="Control the Denon receiver")
     parser.add_argument(
         "action",
-        choices=("on", "off", "next", "previous", "volume-up", "volume-down"),
+        choices=(
+            "on",
+            "off",
+            "next",
+            "previous",
+            "volume-up",
+            "volume-down",
+            "volume-mute",
+        ),
     )
     parser.add_argument("--host", default=_host, help=f"receiver address (default: {_host})")
     parser.add_argument("--port", type=int, default=_port, help=f"HTTP port (default: {_port})")
@@ -116,10 +164,11 @@ def main() -> int:
         "previous": previous,
         "volume-up": volume_up,
         "volume-down": volume_down,
+        "volume-mute": volume_mute,
     }
     try:
         actions[args.action]()
-    except (OSError, URLError) as error:
+    except (OSError, URLError, RuntimeError, lib_heos.HeosError) as error:
         print(f"Denon {args.action} failed: {error}", file=sys.stderr)
         return 1
     return 0

lib_heos.py

@@ -0,0 +1,202 @@
+"""Discover and play HEOS favorite stations through the HEOS CLI service."""
+
+from __future__ import annotations
+
+import argparse
+import json
+import socket
+import sys
+from dataclasses import dataclass
+from typing import Any
+from urllib.parse import urlencode
+
+
+_host = "192.168.178.177"
+_port = 1255
+_timeout = 5.0
+
+
+class HeosError(RuntimeError):
+    """Raised when HEOS rejects a command or returns an invalid response."""
+
+
+@dataclass(frozen=True)
+class Favorite:
+    position: int
+    name: str
+    media_id: str
+
+
+def configure(host: str, port: int = 1255, timeout: float = 5.0) -> None:
+    """Configure the HEOS device used by subsequent calls."""
+    global _host, _port, _timeout
+    _host = host
+    _port = port
+    _timeout = timeout
+
+
+def _command(path: str, **parameters: object) -> dict[str, Any]:
+    # HEOS expects the comma in range values literally (e.g. range=0,100).
+    query = urlencode(parameters, safe=",")
+    command = f"heos://{path}" + (f"?{query}" if query else "")
+    try:
+        with socket.create_connection((_host, _port), timeout=_timeout) as connection:
+            connection.settimeout(_timeout)
+            connection.sendall((command + "\r\n").encode("utf-8"))
+            with connection.makefile("r", encoding="utf-8", newline="\n") as stream:
+                while line := stream.readline():
+                    try:
+                        response = json.loads(line)
+                    except json.JSONDecodeError as error:
+                        raise HeosError(f"Invalid HEOS response: {line.rstrip()!r}") from error
+                    heos = response.get("heos", {})
+                    if str(heos.get("command", "")).strip() != path:
+                        continue
+                    if heos.get("result") != "success":
+                        raise HeosError(str(heos.get("message", "HEOS command failed")))
+                    message = str(heos.get("message", ""))
+                    if "command under process" in message:
+                        continue
+                    return response
+    except (OSError, TimeoutError) as error:
+        raise HeosError(f"Cannot communicate with HEOS at {_host}:{_port}: {error}") from error
+    raise HeosError(f"HEOS closed the connection without answering {path!r}")
+
+
+def _player_id() -> str:
+    response = _command("player/get_players")
+    players = response.get("payload", [])
+    if not isinstance(players, list) or not players:
+        raise HeosError("No HEOS players found")
+    return str(players[0]["pid"])
+
+
+def _favorites_source_id() -> str:
+    response = _command("browse/get_music_sources")
+    sources = response.get("payload", [])
+    if not isinstance(sources, list):
+        raise HeosError("HEOS returned an invalid music-source list")
+    for source in sources:
+        if str(source.get("name", "")).casefold() == "favorites":
+            if source.get("available") == "false":
+                raise HeosError("The HEOS Favorites source is unavailable")
+            return str(source["sid"])
+    raise HeosError("HEOS Favorites source not found")
+
+
+def list_favorites() -> list[Favorite]:
+    """Return the currently configured HEOS favorite stations."""
+    response = _command("browse/browse", sid=_favorites_source_id(), range="0,100")
+    payload = response.get("payload", [])
+    if not isinstance(payload, list):
+        raise HeosError("HEOS returned an invalid Favorites list")
+    return [
+        Favorite(position=index, name=str(item["name"]), media_id=str(item.get("mid", "")))
+        for index, item in enumerate(payload, start=1)
+        if item.get("playable") == "yes"
+    ]
+
+
+def _find_current_favorite(favorites: list[Favorite], payload: object) -> Favorite | None:
+    if not isinstance(payload, dict) or payload.get("type") != "station":
+        return None
+    current_ids = {
+        str(payload.get(key, "")).strip()
+        for key in ("album_id", "mid")
+        if payload.get(key)
+    }
+    for favorite in favorites:
+        if favorite.media_id and favorite.media_id in current_ids:
+            return favorite
+    station = str(payload.get("station", "")).strip().casefold()
+    if station:
+        return next((item for item in favorites if item.name.casefold() == station), None)
+    return None
+
+
+def current_favorite() -> Favorite | None:
+    """Return the playing HEOS favorite, or None for other/no playback."""
+    favorites = list_favorites()
+    player_id = _player_id()
+    response = _command("player/get_now_playing_media", pid=player_id)
+    return _find_current_favorite(favorites, response.get("payload"))
+
+
+def next_favorite() -> Favorite | None:
+    """Play the favorite after the current one, wrapping at the end."""
+    favorites = list_favorites()
+    if not favorites:
+        raise HeosError("No HEOS favorites configured")
+    player_id = _player_id()
+    response = _command("player/get_now_playing_media", pid=player_id)
+    current = _find_current_favorite(favorites, response.get("payload"))
+    if current is None:
+        return None
+    current_index = favorites.index(current)
+    selected = favorites[(current_index + 1) % len(favorites)]
+    _command("browse/play_preset", pid=player_id, preset=selected.position)
+    return selected
+
+
+def previous_favorite() -> Favorite | None:
+    """Play the favorite before the current one, wrapping at the start."""
+    favorites = list_favorites()
+    if not favorites:
+        raise HeosError("No HEOS favorites configured")
+    player_id = _player_id()
+    response = _command("player/get_now_playing_media", pid=player_id)
+    current = _find_current_favorite(favorites, response.get("payload"))
+    if current is None:
+        return None
+    current_index = favorites.index(current)
+    selected = favorites[(current_index - 1) % len(favorites)]
+    _command("browse/play_preset", pid=player_id, preset=selected.position)
+    return selected
+
+
+def play_favorite(favorite: str | int) -> Favorite:
+    """Play a favorite selected by 1-based position or case-insensitive name."""
+    favorites = list_favorites()
+    selected: Favorite | None = None
+    if isinstance(favorite, int) or str(favorite).strip().isdigit():
+        position = int(favorite)
+        selected = next((item for item in favorites if item.position == position), None)
+    else:
+        requested_name = str(favorite).strip().casefold()
+        selected = next((item for item in favorites if item.name.casefold() == requested_name), None)
+    if selected is None:
+        raise HeosError(f"HEOS favorite not found: {favorite!r}")
+    _command("browse/play_preset", pid=_player_id(), preset=selected.position)
+    return selected
+
+
+def main() -> int:
+    parser = argparse.ArgumentParser(description=__doc__)
+    parser.add_argument("--host", default=_host, help=f"HEOS address (default: {_host})")
+    parser.add_argument("--port", type=int, default=_port, help=f"HEOS CLI port (default: {_port})")
+    parser.add_argument("--timeout", type=float, default=_timeout)
+    subparsers = parser.add_subparsers(dest="action", required=True)
+    subparsers.add_parser("list", help="list available HEOS favorites")
+    play_parser = subparsers.add_parser("play", help="play a favorite by number or name")
+    play_parser.add_argument("favorite")
+    args = parser.parse_args()
+    if not 1 <= args.port <= 65535:
+        parser.error("--port must be between 1 and 65535")
+    if args.timeout <= 0:
+        parser.error("--timeout must be positive")
+    configure(args.host, args.port, args.timeout)
+    try:
+        if args.action == "list":
+            for favorite in list_favorites():
+                print(f"{favorite.position:2}. {favorite.name}")
+        else:
+            selected = play_favorite(args.favorite)
+            print(f"Playing HEOS favorite {selected.position}: {selected.name}")
+    except HeosError as error:
+        print(f"HEOS {args.action} failed: {error}", file=sys.stderr)
+        return 1
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())

zigbee-events.log

@@ -11,3 +11,51 @@
 2026-08-22 14:03:19,925 INFO called device="Radio Orb" event="single_button_1" function=denon.on
 2026-08-22 14:10:26,225 INFO Stopping on signal 2
 2026-08-22 14:10:26,226 INFO Zigbee event listener stopped
+2026-08-22 14:24:28,064 INFO Starting Zigbee event listener
+2026-08-22 14:24:28,071 INFO Connected to MQTT broker 192.168.178.247:1883; listening to 1 device(s)
+2026-08-22 14:24:28,116 INFO event device="Radio Orb" topic=zigbee2mqtt/button1_radio action="single_button_1" payload={"action":"single_button_1","battery":100,"linkquality":33,"update":{"installed_version":4101,"latest_release_notes":null,"latest_source":"https://raw.githubusercontent.com/Koenkk/zigbee-OTA/master/images/Sonoff/snzb-01m_v1.1.0.ota","latest_version":4352,"state":"available"}}
+2026-08-22 14:24:28,140 INFO called device="Radio Orb" event="single_button_1" function=denon.on
+2026-08-22 14:24:50,076 INFO event device="Radio Orb" topic=zigbee2mqtt/button1_radio action="single_button_2" payload={"action":"single_button_2","battery":100,"linkquality":3,"update":{"installed_version":4101,"latest_release_notes":null,"latest_source":"https://raw.githubusercontent.com/Koenkk/zigbee-OTA/master/images/Sonoff/snzb-01m_v1.1.0.ota","latest_version":4352,"state":"available"}}
+2026-08-22 14:24:50,083 INFO called device="Radio Orb" event="single_button_2" function=denon.off
+2026-08-22 14:40:02,927 INFO Stopping on signal 2
+2026-08-22 14:40:02,929 INFO Zigbee event listener stopped
+2026-08-22 14:41:32,416 INFO Starting Zigbee event listener
+2026-08-22 14:41:32,424 INFO Connected to MQTT broker 192.168.178.247:1883; listening to 1 device(s)
+2026-08-22 14:41:32,467 INFO event device="Radio Orb" topic=zigbee2mqtt/button1_radio action="single_button_2" payload={"action":"single_button_2","battery":100,"linkquality":3,"update":{"installed_version":4101,"latest_release_notes":null,"latest_source":"https://raw.githubusercontent.com/Koenkk/zigbee-OTA/master/images/Sonoff/snzb-01m_v1.1.0.ota","latest_version":4352,"state":"available"}}
+2026-08-22 14:41:32,506 INFO called device="Radio Orb" event="single_button_2" function=denon.volume_down
+2026-08-22 14:41:39,239 INFO event device="Radio Orb" topic=zigbee2mqtt/button1_radio action="long_button_2" payload={"action":"long_button_2","battery":100,"linkquality":24,"update":{"installed_version":4101,"latest_release_notes":null,"latest_source":"https://raw.githubusercontent.com/Koenkk/zigbee-OTA/master/images/Sonoff/snzb-01m_v1.1.0.ota","latest_version":4352,"state":"available"}}
+2026-08-22 14:41:39,301 INFO called device="Radio Orb" event="long_button_2" function=denon.volume_up
+2026-08-22 14:41:41,903 INFO event device="Radio Orb" topic=zigbee2mqtt/button1_radio action="long_button_2" payload={"action":"long_button_2","battery":100,"linkquality":33,"update":{"installed_version":4101,"latest_release_notes":null,"latest_source":"https://raw.githubusercontent.com/Koenkk/zigbee-OTA/master/images/Sonoff/snzb-01m_v1.1.0.ota","latest_version":4352,"state":"available"}}
+2026-08-22 14:41:41,948 INFO called device="Radio Orb" event="long_button_2" function=denon.volume_up
+2026-08-22 14:41:44,462 INFO event device="Radio Orb" topic=zigbee2mqtt/button1_radio action="long_button_2" payload={"action":"long_button_2","battery":100,"linkquality":33,"update":{"installed_version":4101,"latest_release_notes":null,"latest_source":"https://raw.githubusercontent.com/Koenkk/zigbee-OTA/master/images/Sonoff/snzb-01m_v1.1.0.ota","latest_version":4352,"state":"available"}}
+2026-08-22 14:41:44,542 INFO called device="Radio Orb" event="long_button_2" function=denon.volume_up
+2026-08-22 14:49:15,684 INFO Stopping on signal 2
+2026-08-22 14:49:15,685 INFO Zigbee event listener stopped
+2026-08-22 14:49:17,774 INFO Starting Zigbee event listener
+2026-08-22 14:49:17,779 INFO Connected to MQTT broker 192.168.178.247:1883; listening to 1 device(s)
+2026-08-22 14:49:17,824 INFO event device="Radio Orb" topic=zigbee2mqtt/button1_radio action="long_button_2" payload={"action":"long_button_2","battery":100,"linkquality":33,"update":{"installed_version":4101,"latest_release_notes":null,"latest_source":"https://raw.githubusercontent.com/Koenkk/zigbee-OTA/master/images/Sonoff/snzb-01m_v1.1.0.ota","latest_version":4352,"state":"available"}}
+2026-08-22 14:49:17,876 INFO called device="Radio Orb" event="long_button_2" function=denon.volume_up
+2026-08-22 14:49:25,063 INFO event device="Radio Orb" topic=zigbee2mqtt/button1_radio action="single_button_4" payload={"action":"single_button_4","battery":100,"linkquality":21,"update":{"installed_version":4101,"latest_release_notes":null,"latest_source":"https://raw.githubusercontent.com/Koenkk/zigbee-OTA/master/images/Sonoff/snzb-01m_v1.1.0.ota","latest_version":4352,"state":"available"}}
+2026-08-22 14:49:26,189 INFO called device="Radio Orb" event="single_button_4" function=denon.next
+2026-08-22 14:55:07,851 INFO Stopping on signal 2
+2026-08-22 14:55:07,852 INFO Zigbee event listener stopped
+2026-08-22 14:55:09,373 INFO Starting Zigbee event listener
+2026-08-22 14:55:09,379 INFO Connected to MQTT broker 192.168.178.247:1883; listening to 1 device(s)
+2026-08-22 14:55:09,423 INFO event device="Radio Orb" topic=zigbee2mqtt/button1_radio action="single_button_4" payload={"action":"single_button_4","battery":100,"linkquality":21,"update":{"installed_version":4101,"latest_release_notes":null,"latest_source":"https://raw.githubusercontent.com/Koenkk/zigbee-OTA/master/images/Sonoff/snzb-01m_v1.1.0.ota","latest_version":4352,"state":"available"}}
+2026-08-22 14:55:09,528 INFO called device="Radio Orb" event="single_button_4" function=denon.volume_up
+2026-08-22 14:55:19,370 INFO event device="Radio Orb" topic=zigbee2mqtt/button1_radio action="single_button_4" payload={"action":"single_button_4","battery":100,"linkquality":15,"update":{"installed_version":4101,"latest_release_notes":null,"latest_source":"https://raw.githubusercontent.com/Koenkk/zigbee-OTA/master/images/Sonoff/snzb-01m_v1.1.0.ota","latest_version":4352,"state":"available"}}
+2026-08-22 14:55:19,411 INFO called device="Radio Orb" event="single_button_4" function=denon.volume_up
+2026-08-22 14:55:20,701 INFO event device="Radio Orb" topic=zigbee2mqtt/button1_radio action="single_button_4" payload={"action":"single_button_4","battery":100,"linkquality":3,"update":{"installed_version":4101,"latest_release_notes":null,"latest_source":"https://raw.githubusercontent.com/Koenkk/zigbee-OTA/master/images/Sonoff/snzb-01m_v1.1.0.ota","latest_version":4352,"state":"available"}}
+2026-08-22 14:55:20,803 INFO called device="Radio Orb" event="single_button_4" function=denon.volume_up
+2026-08-22 14:55:23,159 INFO event device="Radio Orb" topic=zigbee2mqtt/button1_radio action="single_button_4" payload={"action":"single_button_4","battery":100,"linkquality":0,"update":{"installed_version":4101,"latest_release_notes":null,"latest_source":"https://raw.githubusercontent.com/Koenkk/zigbee-OTA/master/images/Sonoff/snzb-01m_v1.1.0.ota","latest_version":4352,"state":"available"}}
+2026-08-22 14:55:23,198 INFO called device="Radio Orb" event="single_button_4" function=denon.volume_up
+2026-08-22 14:55:25,617 INFO event device="Radio Orb" topic=zigbee2mqtt/button1_radio action="long_button_3" payload={"action":"long_button_3","battery":100,"linkquality":12,"update":{"installed_version":4101,"latest_release_notes":null,"latest_source":"https://raw.githubusercontent.com/Koenkk/zigbee-OTA/master/images/Sonoff/snzb-01m_v1.1.0.ota","latest_version":4352,"state":"available"}}
+2026-08-22 14:55:25,625 INFO called device="Radio Orb" event="long_button_3" function=denon.volume_mute
+2026-08-22 14:55:29,407 INFO event device="Radio Orb" topic=zigbee2mqtt/button1_radio action="single_button_4" payload={"action":"single_button_4","battery":100,"linkquality":21,"update":{"installed_version":4101,"latest_release_notes":null,"latest_source":"https://raw.githubusercontent.com/Koenkk/zigbee-OTA/master/images/Sonoff/snzb-01m_v1.1.0.ota","latest_version":4352,"state":"available"}}
+2026-08-22 14:55:29,455 INFO called device="Radio Orb" event="single_button_4" function=denon.volume_up
+2026-08-22 14:55:33,707 INFO event device="Radio Orb" topic=zigbee2mqtt/button1_radio action="single_button_3" payload={"action":"single_button_3","battery":100,"linkquality":15,"update":{"installed_version":4101,"latest_release_notes":null,"latest_source":"https://raw.githubusercontent.com/Koenkk/zigbee-OTA/master/images/Sonoff/snzb-01m_v1.1.0.ota","latest_version":4352,"state":"available"}}
+2026-08-22 14:55:33,887 INFO called device="Radio Orb" event="single_button_3" function=denon.volume_down
+2026-08-22 14:55:35,857 INFO event device="Radio Orb" topic=zigbee2mqtt/button1_radio action="single_button_2" payload={"action":"single_button_2","battery":100,"linkquality":27,"update":{"installed_version":4101,"latest_release_notes":null,"latest_source":"https://raw.githubusercontent.com/Koenkk/zigbee-OTA/master/images/Sonoff/snzb-01m_v1.1.0.ota","latest_version":4352,"state":"available"}}
+2026-08-22 14:55:37,085 INFO called device="Radio Orb" event="single_button_2" function=denon.previous
+2026-08-22 14:58:41,282 INFO Stopping on signal 2
+2026-08-22 14:58:41,283 INFO Zigbee event listener stopped

zigbee_events.py

@@ -29,6 +29,7 @@ FUNCTIONS = {
     "denon.previous": lib_denon.previous,
     "denon.volume_up": lib_denon.volume_up,
     "denon.volume_down": lib_denon.volume_down,
+    "denon.volume_mute": lib_denon.volume_mute,
 }