Periodically send update dps command

custom_components/localtuya/common.py

@@ -1,6 +1,7 @@
 """Code shared between all platforms."""
 import asyncio
 import logging
+from datetime import timedelta
 
 from homeassistant.const import (
     CONF_DEVICE_ID,
@@ -9,8 +10,10 @@
     CONF_HOST,
     CONF_ID,
     CONF_PLATFORM,
+    CONF_SCAN_INTERVAL,
 )
 from homeassistant.core import callback
+from homeassistant.helpers.event import async_track_time_interval
 from homeassistant.helpers.dispatcher import (
     async_dispatcher_connect,
     async_dispatcher_send,
@@ -117,6 +120,7 @@ def __init__(self, hass, config_entry):
         self._is_closing = False
         self._connect_task = None
         self._disconnect_task = None
+        self._unsub_interval = None
         self.set_logger(_LOGGER, config_entry[CONF_DEVICE_ID])
 
         # This has to be done in case the device type is type_0d
@@ -166,13 +170,27 @@ def _new_entity_handler(entity_id):
             self._disconnect_task = async_dispatcher_connect(
                 self._hass, signal, _new_entity_handler
             )
+
+            if (
+                CONF_SCAN_INTERVAL in self._config_entry
+                and self._config_entry[CONF_SCAN_INTERVAL] > 0
+            ):
+                self._unsub_interval = async_track_time_interval(
+                    self._hass,
+                    self._async_refresh,
+                    timedelta(seconds=self._config_entry[CONF_SCAN_INTERVAL]),
+                )
         except Exception:  # pylint: disable=broad-except
             self.exception(f"Connect to {self._config_entry[CONF_HOST]} failed")
             if self._interface is not None:
                 await self._interface.close()
                 self._interface = None
         self._connect_task = None
 
+    async def _async_refresh(self, _now):
+        if self._interface is not None:
+            await self._interface.update_dps()
+
     async def close(self):
         """Close connection and stop re-connect loop."""
         self._is_closing = True
@@ -223,7 +241,9 @@ def disconnected(self):
         """Device disconnected."""
         signal = f"localtuya_{self._config_entry[CONF_DEVICE_ID]}"
         async_dispatcher_send(self._hass, signal, None)
-
+        if self._unsub_interval is not None:
+            self._unsub_interval()
+            self._unsub_interval = None
         self._interface = None
         self.debug("Disconnected - waiting for discovery broadcast")
 
@@ -253,13 +273,13 @@ async def async_added_to_hass(self):
 
         def _update_handler(status):
             """Update entity state when status was updated."""
-            if status is not None:
-                self._status = status
-                self.status_updated()
-            else:
-                self._status = {}
-
-            self.schedule_update_ha_state()
+            if status is None:
+                status = {}
+            if self._status != status:
+                self._status = status.copy()
+                if status:
+                    self.status_updated()
+                self.schedule_update_ha_state()
 
         signal = f"localtuya_{self._config_entry.data[CONF_DEVICE_ID]}"
 

custom_components/localtuya/config_flow.py

@@ -14,6 +14,7 @@
     CONF_HOST,
     CONF_ID,
     CONF_PLATFORM,
+    CONF_SCAN_INTERVAL,
 )
 from homeassistant.core import callback
 
@@ -44,6 +45,7 @@
         vol.Required(CONF_HOST): str,
         vol.Required(CONF_DEVICE_ID): str,
         vol.Required(CONF_PROTOCOL_VERSION, default="3.3"): vol.In(["3.1", "3.3"]),
+        vol.Optional(CONF_SCAN_INTERVAL): int,
     }
 )
 
@@ -55,6 +57,7 @@
         vol.Required(CONF_LOCAL_KEY): cv.string,
         vol.Required(CONF_FRIENDLY_NAME): cv.string,
         vol.Required(CONF_PROTOCOL_VERSION, default="3.3"): vol.In(["3.1", "3.3"]),
+        vol.Optional(CONF_SCAN_INTERVAL): int,
     }
 )
 
@@ -90,6 +93,7 @@ def options_schema(entities):
             vol.Required(CONF_HOST): str,
             vol.Required(CONF_LOCAL_KEY): str,
             vol.Required(CONF_PROTOCOL_VERSION, default="3.3"): vol.In(["3.1", "3.3"]),
+            vol.Optional(CONF_SCAN_INTERVAL): int,
             vol.Required(
                 CONF_ENTITIES, description={"suggested_value": entity_names}
             ): cv.multi_select(entity_names),

custom_components/localtuya/pytuya/__init__.py

@@ -21,6 +21,7 @@
    json = status()          # returns json payload
    set_version(version)     #  3.1 [default] or 3.3
    detect_available_dps()   # returns a list of available dps provided by the device
+   update_dps(dps)          # sends update dps command
    add_dps_to_request(dp_index)  # adds dp_index to the list of dps used by the
                                   # device (to be queried in the payload)
    set_dp(on, dp_index)   # Set value of any dps index.
@@ -61,6 +62,7 @@
 SET = "set"
 STATUS = "status"
 HEARTBEAT = "heartbeat"
+UPDATEDPS = "updatedps"  # Request refresh of DPS
 
 PROTOCOL_VERSION_BYTES_31 = b"3.1"
 PROTOCOL_VERSION_BYTES_33 = b"3.3"
@@ -76,6 +78,9 @@
 
 HEARTBEAT_INTERVAL = 10
 
+# DPS that are known to be safe to use with update_dps (0x12) command
+UPDATE_DPS_WHITELIST = [18, 19, 20]  # Socket (Wi-Fi)
+
 # This is intended to match requests.json payload at
 # https://github.com/codetheweb/tuyapi :
 # type_0a devices require the 0a command as the status request
@@ -90,11 +95,13 @@
         STATUS: {"hexByte": 0x0A, "command": {"gwId": "", "devId": ""}},
         SET: {"hexByte": 0x07, "command": {"devId": "", "uid": "", "t": ""}},
         HEARTBEAT: {"hexByte": 0x09, "command": {}},
+        UPDATEDPS: {"hexByte": 0x12, "command": {"dpId": [18, 19, 20]}},
     },
     "type_0d": {
         STATUS: {"hexByte": 0x0D, "command": {"devId": "", "uid": "", "t": ""}},
         SET: {"hexByte": 0x07, "command": {"devId": "", "uid": "", "t": ""}},
         HEARTBEAT: {"hexByte": 0x09, "command": {}},
+        UPDATEDPS: {"hexByte": 0x12, "command": {"dpId": [18, 19, 20]}},
     },
 }
 
@@ -292,6 +299,8 @@ def _dispatch(self, msg):
                 sem = self.listeners[self.HEARTBEAT_SEQNO]
                 self.listeners[self.HEARTBEAT_SEQNO] = msg
                 sem.release()
+        elif msg.cmd == 0x12:
+            self.debug("Got normal updatedps response")
         elif msg.cmd == 0x08:
             self.debug("Got status update")
             self.listener(msg)
@@ -478,6 +487,26 @@ async def heartbeat(self):
         """Send a heartbeat message."""
         return await self.exchange(HEARTBEAT)
 
+    async def update_dps(self, dps=None):
+        """
+        Request device to update index.
+
+        Args:
+            dps([int]): list of dps to update, default=detected&whitelisted
+        """
+        if self.version == 3.3:
+            if dps is None:
+                if not self.dps_cache:
+                    await self.detect_available_dps()
+                if self.dps_cache:
+                    dps = [int(dp) for dp in self.dps_cache]
+                    # filter non whitelisted dps
+                    dps = list(set(dps).intersection(set(UPDATE_DPS_WHITELIST)))
+            self.debug("updatedps() entry (dps %s, dps_cache %s)", dps, self.dps_cache)
+            payload = self._generate_payload(UPDATEDPS, dps)
+            self.transport.write(payload)
+        return True
+
     async def set_dp(self, value, dp_index):
         """
         Set value (may be any type: bool, int or string) of any dps index.
@@ -582,7 +611,10 @@ def _generate_payload(self, command, data=None):
             json_data["t"] = str(int(time.time()))
 
         if data is not None:
-            json_data["dps"] = data
+            if "dpId" in json_data:
+                json_data["dpId"] = data
+            else:
+                json_data["dps"] = data
         elif command_hb == 0x0D:
             json_data["dps"] = self.dps_to_request
 
@@ -591,7 +623,7 @@ def _generate_payload(self, command, data=None):
 
         if self.version == 3.3:
             payload = self.cipher.encrypt(payload, False)
-            if command_hb != 0x0A:
+            if command_hb not in [0x0A, 0x12]:
                 # add the 3.3 header
                 payload = PROTOCOL_33_HEADER + payload
         elif command == SET:

custom_components/localtuya/strings.json

@@ -20,6 +20,7 @@
                     "device_id": "Device ID",
                     "local_key": "Local key",
                     "protocol_version": "Protocol Version",
+                    "scan_interval": "Scan interval (seconds, only when not updating automatically)",
                     "device_type": "Device type"
                 }
             },
@@ -39,4 +40,4 @@
         }
     },
     "title": "LocalTuya"
-}
+}

custom_components/localtuya/translations/en.json

@@ -29,7 +29,8 @@
                     "host": "Host",
                     "device_id": "Device ID",
                     "local_key": "Local key",
-                    "protocol_version": "Protocol Version"
+                    "protocol_version": "Protocol Version",
+                    "scan_interval": "Scan interval (seconds, only when not updating automatically)"
                 }
             },
             "pick_entity_type": {
@@ -94,6 +95,7 @@
                     "host": "Host",
                     "local_key": "Local key",
                     "protocol_version": "Protocol Version",
+                    "scan_interval": "Scan interval (seconds, only when not updating automatically)",
                     "entities": "Entities (uncheck an entity to remove it)"
                 }
             },