Improve config flow UX for multi-shade setups

Reuse the home key from already-configured shades so adding subsequent
shades skips the key step. Show human-readable shade names from the hub
in the device picker. Allow selecting multiple shades at once instead of
repeating the flow for each one. Default to hub fetch as the key method.

custom_components/hunterdouglas_powerview_ble/api.py

@@ -134,6 +134,11 @@ class PowerViewBLE:
     def encrypted(self, value: bool) -> None:
         self._is_encrypted = value
 
+    @property
+    def has_key(self) -> bool:
+        """Return True if a valid homekey was provided."""
+        return self._cipher is not None
+
     @property
     def info(self) -> PVDeviceInfo:
         """Return device information, e.g. SW version."""

custom_components/hunterdouglas_powerview_ble/config_flow.py

@@ -1,8 +1,12 @@
 """Config flow for BLE Battery Management System integration."""
 
+import asyncio
+import base64
+import struct
 from dataclasses import dataclass
 from typing import Any
 
+import aiohttp
 import voluptuous as vol
 
 from homeassistant import config_entries
@@ -12,21 +16,121 @@ from homeassistant.components.bluetooth import (
 )
 from homeassistant.config_entries import ConfigFlowResult
 from homeassistant.const import CONF_ADDRESS
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers.aiohttp_client import async_get_clientsession
 from homeassistant.helpers.selector import (
     SelectOptionDict,
     SelectSelector,
     SelectSelectorConfig,
+    TextSelector,
+    TextSelectorConfig,
+    TextSelectorType,
 )
 
 from .api import UUID_COV_SERVICE as UUID
-from .const import DOMAIN, LOGGER, MFCT_ID
+from .const import CONF_HOME_KEY, DOMAIN, LOGGER, MFCT_ID
+
+
+def _needs_encryption(manufacturer_data_hex: str) -> bool:
+    """Return True if the BLE advertisement indicates encryption (home_id != 0)."""
+    data = bytearray.fromhex(manufacturer_data_hex)
+    if len(data) < 2:
+        return False
+    home_id = int.from_bytes(data[0:2], byteorder="little")
+    return home_id != 0
+
+
+@dataclass
+class HubShadeInfo:
+    """Shade metadata from the PowerView hub."""
+
+    name: str  # Human-readable name (decoded from base64)
+    ble_name: str  # BLE advertisement name, e.g. "DUE:94ED"
+
+
+async def _fetch_key_and_shades_from_hub(
+    hass: HomeAssistant, hub_url: str
+) -> tuple[bytes, list[HubShadeInfo]]:
+    """Fetch 16-byte homekey and shade list from a PowerView G3 hub.
+
+    Returns (key, shade_list).  The key is network-wide so any reachable shade
+    returns the same value.  The shade list contains human-readable names that
+    can be used to label BLE-discovered devices.
+
+    Raises ValueError on protocol/key errors.
+    Raises aiohttp.ClientError on network errors.
+    Raises asyncio.TimeoutError on timeout.
+    """
+    session = async_get_clientsession(hass)
+    timeout = aiohttp.ClientTimeout(total=10)
+
+    # Get list of shades from hub
+    async with session.get(f"{hub_url}/home/shades", timeout=timeout) as resp:
+        resp.raise_for_status()
+        shades = await resp.json(content_type=None)
+
+    if not shades:
+        raise ValueError("No shades found on the hub")
+
+    # Parse shade metadata (name is base64-encoded on the hub)
+    hub_shades: list[HubShadeInfo] = []
+    for shade in shades:
+        ble_name = shade.get("bleName", "")
+        if not ble_name:
+            continue
+        name_b64 = shade.get("name", "")
+        try:
+            name = base64.b64decode(name_b64).decode("utf-8") if name_b64 else ble_name
+        except Exception:  # noqa: BLE001
+            name = ble_name
+        hub_shades.append(HubShadeInfo(name=name, ble_name=ble_name))
+
+    # GetShadeKey BLE request: sid=251, cid=18, seqId=1, data_len=0
+    request_frame = struct.pack("<BBBB", 251, 18, 1, 0)
+
+    # Try each shade until one returns a valid key (some may be out of range)
+    last_error: Exception = ValueError("No shades responded")
+    for shade in shades:
+        ble_name = shade.get("bleName", "")
+        if not ble_name:
+            continue
+        try:
+            async with session.post(
+                f"{hub_url}/home/shades/exec?shades={ble_name}",
+                json={"hex": request_frame.hex()},
+                timeout=timeout,
+            ) as resp:
+                resp.raise_for_status()
+                result = await resp.json(content_type=None)
+
+            responses = result.get("responses", [])
+            if len(responses) != 1 or "hex" not in responses[0]:
+                continue
+
+            response_bytes = bytes.fromhex(responses[0]["hex"])
+            if len(response_bytes) < 5:
+                continue
+            _s, _c, _q, length = struct.unpack("<BBBB", response_bytes[0:4])
+            if len(response_bytes) != 4 + length:
+                continue
+            if response_bytes[4] != 0:
+                continue
+            key_data = response_bytes[5:]
+            if len(key_data) != 16:
+                continue
+            return key_data, hub_shades
+        except (aiohttp.ClientError, asyncio.TimeoutError) as ex:
+            last_error = ex
+            continue
+
+    raise ValueError(f"No reachable shade returned a valid key: {last_error}")
 
 
 class ConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
     """Handle a config flow for BT Battery Management System."""
 
     VERSION = 1
-    MINOR_VERSION = 0
+    MINOR_VERSION = 1
 
     @dataclass
     class DiscoveredDevice:
@@ -40,6 +144,20 @@ class ConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
 
         self._discovered_device: ConfigFlow.DiscoveredDevice | None = None
         self._discovered_devices: dict[str, ConfigFlow.DiscoveredDevice] = {}
+        self._manufacturer_data_hex: str = ""
+        self._device_name: str = ""
+        self._home_key: str = ""
+        self._hub_shades: list[HubShadeInfo] = []
+
+    def _create_entry(self) -> ConfigFlowResult:
+        """Create the config entry with collected data."""
+        return self.async_create_entry(
+            title=self._device_name,
+            data={
+                "manufacturer_data": self._manufacturer_data_hex,
+                CONF_HOME_KEY: self._home_key,
+            },
+        )
 
     async def async_step_bluetooth(
         self, discovery_info: BluetoothServiceInfoBleak
@@ -64,14 +182,16 @@ class ConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
         LOGGER.debug("confirm step for %s", self._discovered_device.name)
 
         if user_input is not None:
-            return self.async_create_entry(
-                title=self._discovered_device.name,
-                data={
-                    "manufacturer_data": self._discovered_device.discovery_info.manufacturer_data[
-                        MFCT_ID
-                    ].hex()
-                },
+            self._manufacturer_data_hex = (
+                self._discovered_device.discovery_info.manufacturer_data[MFCT_ID].hex()
             )
+            self._device_name = self._discovered_device.name
+
+            # Unencrypted shades can skip the homekey step entirely
+            if not _needs_encryption(self._manufacturer_data_hex):
+                return self._create_entry()
+
+            return await self.async_step_homekey_bluetooth()
 
         self._set_confirm_only()
 
@@ -80,28 +200,167 @@ class ConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
             description_placeholders={"name": self._discovered_device.name},
         )
 
+    async def async_step_homekey_bluetooth(
+        self, user_input: dict[str, Any] | None = None
+    ) -> ConfigFlowResult:
+        """Configure homekey for a shade discovered via Bluetooth."""
+        # Reuse an existing key if another shade was already configured
+        existing = self._existing_home_key()
+        if existing and user_input is None:
+            self._home_key = existing
+            return self._create_entry()
+
+        errors: dict[str, str] = {}
+
+        if user_input is not None:
+            method = user_input.get("key_method", "skip")
+
+            if method == "skip":
+                self._home_key = ""
+                return self._create_entry()
+
+            elif method == "manual":
+                raw = user_input.get("home_key", "").strip()
+                if "\\x" in raw:
+                    raw = raw.replace("\\x", "")
+                if len(raw) != 32:
+                    errors["home_key"] = "invalid_key_length"
+                else:
+                    try:
+                        bytes.fromhex(raw)
+                    except ValueError:
+                        errors["home_key"] = "invalid_key_format"
+                    else:
+                        self._home_key = raw.lower()
+                        return self._create_entry()
+
+            elif method == "hub":
+                hub_url = user_input.get("hub_url", "").rstrip("/")
+                try:
+                    key, hub_shades = await _fetch_key_and_shades_from_hub(
+                        self.hass, hub_url
+                    )
+                    self._home_key = key.hex()
+                    # Use hub name for the entry title if available
+                    for hs in hub_shades:
+                        if hs.ble_name == self._device_name:
+                            self._device_name = hs.name
+                            break
+                    return self._create_entry()
+                except aiohttp.ClientResponseError:
+                    errors["hub_url"] = "hub_http_error"
+                except aiohttp.ClientConnectionError:
+                    errors["hub_url"] = "hub_connection_error"
+                except (asyncio.TimeoutError, TimeoutError):
+                    errors["hub_url"] = "hub_timeout"
+                except ValueError:
+                    errors["hub_url"] = "hub_protocol_error"
+
+        return self.async_show_form(
+            step_id="homekey_bluetooth",
+            data_schema=vol.Schema(
+                {
+                    vol.Required("key_method", default="hub"): SelectSelector(
+                        SelectSelectorConfig(
+                            options=[
+                                {
+                                    "value": "hub",
+                                    "label": "Fetch automatically from PowerView hub",
+                                },
+                                {
+                                    "value": "manual",
+                                    "label": "Enter key manually (32 hex characters)",
+                                },
+                                {
+                                    "value": "skip",
+                                    "label": "Skip (no key — controls disabled for encrypted shades)",
+                                },
+                            ]
+                        )
+                    ),
+                    vol.Optional("hub_url", default="http://powerview-g3.local"): TextSelector(
+                        TextSelectorConfig(type=TextSelectorType.URL)
+                    ),
+                    vol.Optional("home_key", default=""): TextSelector(
+                        TextSelectorConfig(type=TextSelectorType.TEXT)
+                    ),
+                }
+            ),
+            errors=errors,
+            description_placeholders={"name": self._device_name},
+        )
+
+    def _existing_home_key(self) -> str:
+        """Return the home_key from any already-configured entry, or ''."""
+        for entry in self._async_current_entries():
+            key = entry.data.get(CONF_HOME_KEY, "")
+            if key:
+                return key
+        return ""
+
+    def _hub_name_for(self, ble_name: str) -> str | None:
+        """Return the human-readable hub name for a BLE name, or None."""
+        for hs in self._hub_shades:
+            if hs.ble_name == ble_name:
+                return hs.name
+        return None
+
     async def async_step_user(
         self, user_input: dict[str, Any] | None = None
     ) -> ConfigFlowResult:
-        """Handle the user step to pick discovered device."""
+        """Handle the user step — reuse existing key or collect one."""
         LOGGER.debug("user step")
+        existing = self._existing_home_key()
+        if existing:
+            self._home_key = existing
+            return await self.async_step_select_device()
+        return await self.async_step_homekey()
+
+    async def async_step_select_device(
+        self, user_input: dict[str, Any] | None = None
+    ) -> ConfigFlowResult:
+        """Select one or more BLE-discovered shades, or fall through to manual."""
+        LOGGER.debug("select_device step")
 
         if user_input is not None:
-            address = user_input[CONF_ADDRESS]
-            await self.async_set_unique_id(address, raise_on_progress=False)
+            addresses: list[str] = user_input[CONF_ADDRESS]
+            if isinstance(addresses, str):
+                addresses = [addresses]
+
+            # Build entry info for every selected shade
+            entries: list[dict[str, Any]] = []
+            for address in addresses:
+                device = self._discovered_devices[address]
+                ble_name = device.name
+                name = self._hub_name_for(ble_name) or ble_name
+                mfct_hex = device.discovery_info.manufacturer_data[MFCT_ID].hex()
+                entries.append(
+                    {
+                        "address": address,
+                        "name": name,
+                        "data": {
+                            "manufacturer_data": mfct_hex,
+                            CONF_HOME_KEY: self._home_key,
+                        },
+                    }
+                )
+
+            # Kick off auto-add flows for all but the last shade
+            for info in entries[:-1]:
+                await self.hass.config_entries.flow.async_init(
+                    DOMAIN,
+                    context={"source": "auto_add"},
+                    data=info,
+                )
+
+            # Create the final entry normally (ends this flow)
+            last = entries[-1]
+            await self.async_set_unique_id(last["address"], raise_on_progress=False)
             self._abort_if_unique_id_configured()
-            self._discovered_device = self._discovered_devices[address]
-
-            self.context["title_placeholders"] = {"name": self._discovered_device.name}
-
-            return self.async_create_entry(
-                title=self._discovered_device.name,
-                data={
-                    "manufacturer_data": self._discovered_device.discovery_info.manufacturer_data[
-                        MFCT_ID
-                    ].hex()
-                },
-            )
+            self._device_name = last["name"]
+            self._manufacturer_data_hex = last["data"]["manufacturer_data"]
+            self.context["title_placeholders"] = {"name": self._device_name}
+            return self._create_entry()
 
         current_addresses = self._async_current_ids()
         for discovery_info in async_discovered_service_info(self.hass, False):
@@ -120,19 +379,136 @@ class ConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
             )
 
         if not self._discovered_devices:
-            return self.async_abort(reason="no_devices_found")
+            return await self.async_step_manual()
 
         titles: list[SelectOptionDict] = []
         for address, discovery in self._discovered_devices.items():
-            titles.append({"value": address, "label": discovery.name})
+            hub_name = self._hub_name_for(discovery.name)
+            label = f"{hub_name} ({discovery.name})" if hub_name else discovery.name
+            titles.append({"value": address, "label": label})
 
         return self.async_show_form(
-            step_id="user",
+            step_id="select_device",
             data_schema=vol.Schema(
                 {
                     vol.Required(CONF_ADDRESS): SelectSelector(
-                        SelectSelectorConfig(options=titles)
+                        SelectSelectorConfig(options=titles, multiple=True)
                     )
                 }
             ),
         )
+
+    async def async_step_auto_add(
+        self, data: dict[str, Any]
+    ) -> ConfigFlowResult:
+        """Create a config entry for a shade selected via multi-select."""
+        await self.async_set_unique_id(data["address"])
+        self._abort_if_unique_id_configured()
+        return self.async_create_entry(title=data["name"], data=data["data"])
+
+    async def async_step_manual(
+        self, user_input: dict[str, Any] | None = None
+    ) -> ConfigFlowResult:
+        """Handle manual entry of a BLE device address and name."""
+        if user_input is not None:
+            address = user_input[CONF_ADDRESS].upper().strip()
+            self._device_name = user_input["ble_name"].strip()
+            await self.async_set_unique_id(address, raise_on_progress=False)
+            self._abort_if_unique_id_configured()
+            self.context["title_placeholders"] = {"name": self._device_name}
+            self._manufacturer_data_hex = ""
+            return self._create_entry()
+
+        return self.async_show_form(
+            step_id="manual",
+            data_schema=vol.Schema(
+                {
+                    vol.Required(CONF_ADDRESS): TextSelector(
+                        TextSelectorConfig(type=TextSelectorType.TEXT)
+                    ),
+                    vol.Required("ble_name"): TextSelector(
+                        TextSelectorConfig(type=TextSelectorType.TEXT)
+                    ),
+                }
+            ),
+        )
+
+    async def async_step_homekey(
+        self, user_input: dict[str, Any] | None = None
+    ) -> ConfigFlowResult:
+        """Configure homekey — collected before device selection."""
+        errors: dict[str, str] = {}
+
+        if user_input is not None:
+            method = user_input.get("key_method", "skip")
+
+            if method == "skip":
+                self._home_key = ""
+                return await self.async_step_select_device()
+
+            elif method == "manual":
+                raw = user_input.get("home_key", "").strip()
+                # Accept \xNN\xNN... format (e.g. from ESP32 emulator serial log)
+                if "\\x" in raw:
+                    raw = raw.replace("\\x", "")
+                if len(raw) != 32:
+                    errors["home_key"] = "invalid_key_length"
+                else:
+                    try:
+                        bytes.fromhex(raw)
+                    except ValueError:
+                        errors["home_key"] = "invalid_key_format"
+                    else:
+                        self._home_key = raw.lower()
+                        return await self.async_step_select_device()
+
+            elif method == "hub":
+                hub_url = user_input.get("hub_url", "").rstrip("/")
+                try:
+                    key, hub_shades = await _fetch_key_and_shades_from_hub(
+                        self.hass, hub_url
+                    )
+                    self._home_key = key.hex()
+                    self._hub_shades = hub_shades
+                    return await self.async_step_select_device()
+                except aiohttp.ClientResponseError:
+                    errors["hub_url"] = "hub_http_error"
+                except aiohttp.ClientConnectionError:
+                    errors["hub_url"] = "hub_connection_error"
+                except (asyncio.TimeoutError, TimeoutError):
+                    errors["hub_url"] = "hub_timeout"
+                except ValueError:
+                    errors["hub_url"] = "hub_protocol_error"
+
+        return self.async_show_form(
+            step_id="homekey",
+            data_schema=vol.Schema(
+                {
+                    vol.Required("key_method", default="hub"): SelectSelector(
+                        SelectSelectorConfig(
+                            options=[
+                                {
+                                    "value": "hub",
+                                    "label": "Fetch automatically from PowerView hub",
+                                },
+                                {
+                                    "value": "manual",
+                                    "label": "Enter key manually (32 hex characters)",
+                                },
+                                {
+                                    "value": "skip",
+                                    "label": "Skip (no key — controls disabled for encrypted shades)",
+                                },
+                            ]
+                        )
+                    ),
+                    vol.Optional("hub_url", default="http://powerview-g3.local"): TextSelector(
+                        TextSelectorConfig(type=TextSelectorType.URL)
+                    ),
+                    vol.Optional("home_key", default=""): TextSelector(
+                        TextSelectorConfig(type=TextSelectorType.TEXT)
+                    ),
+                }
+            ),
+            errors=errors,
+        )

custom_components/hunterdouglas_powerview_ble/const.py

@@ -8,10 +8,7 @@ LOGGER: Final = logging.getLogger(__package__)
 MFCT_ID: Final[int] = 2073
 TIMEOUT: Final[int] = 5
 
-# put the key here, needs to be 16 bytes long, e.g.
-# HOME_KEY: Final[bytes] = b"\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f"
-HOME_KEY: Final[bytes] = b""
-
+CONF_HOME_KEY: Final[str] = "home_key"
 
 # attributes (do not change)
 ATTR_RSSI: Final[str] = "rssi"

custom_components/hunterdouglas_powerview_ble/coordinator.py

@@ -13,7 +13,7 @@ from homeassistant.core import HomeAssistant, callback
 from homeassistant.helpers.device_registry import CONNECTION_BLUETOOTH, DeviceInfo
 
 from .api import SHADE_TYPE, PowerViewBLE
-from .const import ATTR_RSSI, DOMAIN, HOME_KEY, LOGGER
+from .const import ATTR_RSSI, CONF_HOME_KEY, DOMAIN, LOGGER
 
 
 class PVCoordinator(PassiveBluetoothDataUpdateCoordinator):
@@ -25,7 +25,9 @@ class PVCoordinator(PassiveBluetoothDataUpdateCoordinator):
         """Initialize BMS data coordinator."""
         assert ble_device.name is not None
         self._mac = ble_device.address
-        self.api = PowerViewBLE(ble_device, HOME_KEY)
+        home_key_hex: str = data.get(CONF_HOME_KEY, "")
+        home_key: bytes = bytes.fromhex(home_key_hex) if len(home_key_hex) == 32 else b""
+        self.api = PowerViewBLE(ble_device, home_key)
         self.data: dict[str, int | float | bool] = {}
         self._manuf_dat = data.get("manufacturer_data")
         self.dev_details: dict[str, str] = {}

custom_components/hunterdouglas_powerview_ble/cover.py

@@ -22,7 +22,7 @@ from homeassistant.helpers.device_registry import DeviceInfo, format_mac
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
 
 from .api import CLOSED_POSITION, OPEN_POSITION
-from .const import DOMAIN, HOME_KEY, LOGGER
+from .const import DOMAIN, LOGGER
 from .coordinator import PVCoordinator
 
 
@@ -107,7 +107,7 @@ class PowerViewCover(PassiveBluetoothCoordinatorEntity[PVCoordinator], CoverEnti
     def supported_features(self) -> CoverEntityFeature:  # type: ignore[reportIncompatibleVariableOverride]
         """Flag supported features, disable control if encryption is needed."""
         if (
-            self._coord.data.get("home_id") and len(HOME_KEY) != 16
+            self._coord.data.get("home_id") and not self._coord.api.has_key
         ) or self._coord.data.get("battery_charging"):
             return CoverEntityFeature(0)
 

custom_components/hunterdouglas_powerview_ble/manifest.json

@@ -16,5 +16,5 @@
   "issue_tracker": "https://github.com/patman15/hdpv_ble/issues",
   "loggers": ["hunterdouglas_powerview_ble"],
   "requirements": ["cryptography>=43.0.0"],
-  "version": "0.23"
+  "version": "0.24"
 }

custom_components/hunterdouglas_powerview_ble/strings.json

@@ -4,8 +4,57 @@
     "step": {
       "bluetooth_confirm": {
         "description": "[%key:component::bluetooth::config::step::bluetooth_confirm::description%]"
+      },
+      "homekey": {
+        "title": "Configure HomeKey",
+        "description": "All shades on a PowerView network share the same encryption key. The recommended method is to fetch it from your G3 hub. You can also enter the key manually, or skip if your shades are unencrypted.",
+        "data": {
+          "key_method": "Key source",
+          "hub_url": "PowerView hub URL",
+          "home_key": "HomeKey (32 hex characters or \\xNN format)"
+        },
+        "data_description": {
+          "hub_url": "Base URL of your PowerView G3 hub, e.g. http://powerview-g3.local",
+          "home_key": "32-character hex string (e.g. 0102030405060708090a0b0c0d0e0f10) or \\x escaped format (e.g. \\x01\\x02...)"
+        }
+      },
+      "homekey_bluetooth": {
+        "title": "Configure HomeKey for {name}",
+        "description": "This shade uses encryption. The recommended method is to fetch the key from your G3 hub. You can also enter it manually, or skip (controls will be disabled until a key is configured).",
+        "data": {
+          "key_method": "Key source",
+          "hub_url": "PowerView hub URL",
+          "home_key": "HomeKey (32 hex characters or \\xNN format)"
+        },
+        "data_description": {
+          "hub_url": "Base URL of your PowerView G3 hub, e.g. http://powerview-g3.local",
+          "home_key": "32-character hex string (e.g. 0102030405060708090a0b0c0d0e0f10) or \\x escaped format (e.g. \\x01\\x02...)"
+        }
+      },
+      "select_device": {
+        "title": "Select Shades",
+        "description": "Select the PowerView shades to add via Bluetooth.",
+        "data": {
+          "address": "Shades"
+        }
+      },
+      "manual": {
+        "title": "Enter Device Details",
+        "description": "No PowerView shades were found via Bluetooth. Enter the device details manually.",
+        "data": {
+          "address": "Bluetooth MAC address (e.g. AA:BB:CC:DD:EE:FF)",
+          "ble_name": "BLE device name (e.g. DUE:94ED)"
+        }
       }
     },
+    "error": {
+      "invalid_key_format": "HomeKey must be a valid hexadecimal string",
+      "invalid_key_length": "HomeKey must be exactly 32 hex characters (16 bytes)",
+      "hub_connection_error": "Cannot connect to the PowerView hub",
+      "hub_http_error": "Hub returned an HTTP error",
+      "hub_timeout": "Connection to hub timed out",
+      "hub_protocol_error": "Hub returned an unexpected response"
+    },
     "abort": {
       "already_configured": "[%key:common::config_flow::abort::already_configured_device%]",
       "no_devices_found": "[%key:common::config_flow::abort::no_devices_found%]",

custom_components/hunterdouglas_powerview_ble/translations/en.json

@@ -1,15 +1,64 @@
 {
     "config": {
-        "abort": {
-            "already_configured": "Device is already configured",
-            "no_devices_found": "No devices found on the network",
-            "not_supported": "Device not supported"
-        },
         "flow_title": "Setup {name}",
         "step": {
             "bluetooth_confirm": {
                 "description": "Do you want to set up {name}?"
+            },
+            "homekey": {
+                "title": "Configure HomeKey",
+                "description": "All shades on a PowerView network share the same encryption key. The recommended method is to fetch it from your G3 hub. You can also enter the key manually, or skip if your shades are unencrypted.",
+                "data": {
+                    "key_method": "Key source",
+                    "hub_url": "PowerView hub URL",
+                    "home_key": "HomeKey (32 hex characters or \\xNN format)"
+                },
+                "data_description": {
+                    "hub_url": "Base URL of your PowerView G3 hub, e.g. http://powerview-g3.local",
+                    "home_key": "32-character hex string (e.g. 0102030405060708090a0b0c0d0e0f10) or \\x escaped format (e.g. \\x01\\x02...)"
+                }
+            },
+            "homekey_bluetooth": {
+                "title": "Configure HomeKey for {name}",
+                "description": "This shade uses encryption. The recommended method is to fetch the key from your G3 hub. You can also enter it manually, or skip (controls will be disabled until a key is configured).",
+                "data": {
+                    "key_method": "Key source",
+                    "hub_url": "PowerView hub URL",
+                    "home_key": "HomeKey (32 hex characters or \\xNN format)"
+                },
+                "data_description": {
+                    "hub_url": "Base URL of your PowerView G3 hub, e.g. http://powerview-g3.local",
+                    "home_key": "32-character hex string (e.g. 0102030405060708090a0b0c0d0e0f10) or \\x escaped format (e.g. \\x01\\x02...)"
+                }
+            },
+            "select_device": {
+                "title": "Select Shades",
+                "description": "Select the PowerView shades to add via Bluetooth.",
+                "data": {
+                    "address": "Shades"
+                }
+            },
+            "manual": {
+                "title": "Enter Device Details",
+                "description": "No PowerView shades were found via Bluetooth. Enter the device details manually.",
+                "data": {
+                    "address": "Bluetooth MAC address (e.g. AA:BB:CC:DD:EE:FF)",
+                    "ble_name": "BLE device name (e.g. DUE:94ED)"
+                }
             }
+        },
+        "error": {
+            "invalid_key_format": "HomeKey must be a valid hexadecimal string",
+            "invalid_key_length": "HomeKey must be exactly 32 hex characters (16 bytes)",
+            "hub_connection_error": "Cannot connect to the PowerView hub",
+            "hub_http_error": "Hub returned an HTTP error",
+            "hub_timeout": "Connection to hub timed out",
+            "hub_protocol_error": "Hub returned an unexpected response"
+        },
+        "abort": {
+            "already_configured": "Device is already configured",
+            "no_devices_found": "No devices found on the network",
+            "not_supported": "Device not supported"
         }
     }
 }

scripts/extract_gateway3_homekey.py

@@ -55,12 +55,13 @@ def get_shade_key(hub: str, ble_name) -> bytes:
         raise
 
     result: dict = json.loads(shades_exec_resp.content)
-    if result.get("err") != 0 or len(result.get("responses", [])) != 1:
-        raise OSError("Error when attempting GetShadeKey")
-    response: Final[bytes] = bytes.fromhex(result["responses"][0]["hex"])
+    responses = result.get("responses", [])
+    if len(responses) != 1 or "hex" not in responses[0]:
+        raise OSError(f"Error when attempting GetShadeKey: {result}")
+    response: Final[bytes] = bytes.fromhex(responses[0]["hex"])
     dec_resp: Final[dict[str, Any]] = decode_response(response)
     if dec_resp["errorCode"] != 0:
-        raise ValueError("BLE errorCode is not 0")
+        raise ValueError(f"BLE errorCode={dec_resp['errorCode']} data={dec_resp['data'].hex()}")
     if len(dec_resp["data"]) != 16:
         raise ValueError("Expected 16 byte homekey")
     return dec_resp["data"]
@@ -79,9 +80,23 @@ def main(hub: str) -> int:
 
     shades = json.loads(shades_resp.content)
     print(f"Found {len(shades)} shades, interrogating")
+    network_key: bytes | None = None
     for shade in shades:
         name: str = base64.b64decode(shade["name"]).decode("utf-8")
-        key: bytes = get_shade_key(hub, shade["bleName"])
+        try:
+            key: bytes = get_shade_key(hub, shade["bleName"])
+            network_key = key
+        except (OSError, ValueError) as ex:
+            if network_key is not None:
+                key = network_key
+                print(f"Shade '{name}':")
+                print(f"\tBLE name: '{shade['bleName']}'")
+                print(f"\tHomeKey: {key.hex()} (shade unreachable, using network key)")
+            else:
+                print(f"Shade '{name}':")
+                print(f"\tBLE name: '{shade['bleName']}'")
+                print(f"\tHomeKey: ERROR - {ex}")
+            continue
 
         print(f"Shade '{name}':")
         print(f"\tBLE name: '{shade['bleName']}'")