Handle invalid device type in onewire (#116153)

* Make device type optional in onewire

* Add comment

homeassistant/components/onewire/binary_sensor.py

@@ -117,7 +117,7 @@ def get_entities(onewire_hub: OneWireHub) -> list[OneWireBinarySensor]:
         device_type = device.type
         device_info = device.device_info
         device_sub_type = "std"
-        if "EF" in family:
+        if device_type and "EF" in family:
             device_sub_type = "HobbyBoard"
             family = device_type
 

homeassistant/components/onewire/model.py

@@ -16,4 +16,4 @@ class OWDeviceDescription:
     family: str
     id: str
     path: str
-    type: str
+    type: str | None

homeassistant/components/onewire/onewirehub.py

@@ -45,7 +45,7 @@ DEVICE_MANUFACTURER = {
 _LOGGER = logging.getLogger(__name__)
 
 
-def _is_known_device(device_family: str, device_type: str) -> bool:
+def _is_known_device(device_family: str, device_type: str | None) -> bool:
     """Check if device family/type is known to the library."""
     if device_family in ("7E", "EF"):  # EDS or HobbyBoard
         return device_type in DEVICE_SUPPORT[device_family]
@@ -144,11 +144,15 @@ class OneWireHub:
 
         return devices
 
-    def _get_device_type(self, device_path: str) -> str:
+    def _get_device_type(self, device_path: str) -> str | None:
         """Get device model."""
         if TYPE_CHECKING:
             assert self.owproxy
-        device_type = self.owproxy.read(f"{device_path}type").decode()
+        try:
+            device_type = self.owproxy.read(f"{device_path}type").decode()
+        except protocol.ProtocolError as exc:
+            _LOGGER.debug("Unable to read `%stype`: %s", device_path, exc)
+            return None
         _LOGGER.debug("read `%stype`: %s", device_path, device_type)
         if device_type == "EDS":
             device_type = self.owproxy.read(f"{device_path}device_type").decode()

homeassistant/components/onewire/sensor.py

@@ -377,10 +377,10 @@ def get_entities(
         device_info = device.device_info
         device_sub_type = "std"
         device_path = device.path
-        if "EF" in family:
+        if device_type and "EF" in family:
             device_sub_type = "HobbyBoard"
             family = device_type
-        elif "7E" in family:
+        elif device_type and "7E" in family:
             device_sub_type = "EDS"
             family = device_type
         elif "A6" in family:

homeassistant/components/onewire/switch.py

@@ -178,7 +178,7 @@ def get_entities(onewire_hub: OneWireHub) -> list[OneWireSwitch]:
         device_id = device.id
         device_info = device.device_info
         device_sub_type = "std"
-        if "EF" in family:
+        if device_type and "EF" in family:
             device_sub_type = "HobbyBoard"
             family = device_type
         elif "A6" in family:

tests/components/onewire/const.py

@@ -1,6 +1,6 @@
 """Constants for 1-Wire integration."""
 
-from pyownet.protocol import Error as ProtocolError
+from pyownet.protocol import ProtocolError
 
 from homeassistant.components.onewire.const import Platform
 
@@ -58,6 +58,12 @@ MOCK_OWPROXY_DEVICES = {
             {ATTR_INJECT_READS: b"    248125"},
         ],
     },
+    "16.111111111111": {
+        # Test case for issue #115984, where the device type cannot be read
+        ATTR_INJECT_READS: [
+            ProtocolError(),  # read device type
+        ],
+    },
     "1F.111111111111": {
         ATTR_INJECT_READS: [
             b"DS2409",  # read device type

tests/components/onewire/snapshots/test_binary_sensor.ambr

@@ -219,6 +219,18 @@
     }),
   ])
 # ---
+# name: test_binary_sensors[16.111111111111]
+  list([
+  ])
+# ---
+# name: test_binary_sensors[16.111111111111].1
+  list([
+  ])
+# ---
+# name: test_binary_sensors[16.111111111111].2
+  list([
+  ])
+# ---
 # name: test_binary_sensors[1D.111111111111]
   list([
     DeviceRegistryEntrySnapshot({

tests/components/onewire/snapshots/test_sensor.ambr

@@ -278,6 +278,18 @@
     }),
   ])
 # ---
+# name: test_sensors[16.111111111111]
+  list([
+  ])
+# ---
+# name: test_sensors[16.111111111111].1
+  list([
+  ])
+# ---
+# name: test_sensors[16.111111111111].2
+  list([
+  ])
+# ---
 # name: test_sensors[1D.111111111111]
   list([
     DeviceRegistryEntrySnapshot({

tests/components/onewire/snapshots/test_switch.ambr

@@ -351,6 +351,18 @@
     }),
   ])
 # ---
+# name: test_switches[16.111111111111]
+  list([
+  ])
+# ---
+# name: test_switches[16.111111111111].1
+  list([
+  ])
+# ---
+# name: test_switches[16.111111111111].2
+  list([
+  ])
+# ---
 # name: test_switches[1D.111111111111]
   list([
     DeviceRegistryEntrySnapshot({