Fix passing value to pymodbus low level function (#135108)

homeassistant/components/modbus/modbus.py

@@ -72,48 +72,56 @@ from .validators import check_config
 _LOGGER = logging.getLogger(__name__)
 
 
-ConfEntry = namedtuple("ConfEntry", "call_type attr func_name")  # noqa: PYI024
+ConfEntry = namedtuple("ConfEntry", "call_type attr func_name value_attr_name")  # noqa: PYI024
-RunEntry = namedtuple("RunEntry", "attr func")  # noqa: PYI024
+RunEntry = namedtuple("RunEntry", "attr func value_attr_name")  # noqa: PYI024
 PB_CALL = [
     ConfEntry(
         CALL_TYPE_COIL,
         "bits",
         "read_coils",
+        "count",
     ),
     ConfEntry(
         CALL_TYPE_DISCRETE,
         "bits",
         "read_discrete_inputs",
+        "count",
     ),
     ConfEntry(
         CALL_TYPE_REGISTER_HOLDING,
         "registers",
         "read_holding_registers",
+        "count",
     ),
     ConfEntry(
         CALL_TYPE_REGISTER_INPUT,
         "registers",
         "read_input_registers",
+        "count",
     ),
     ConfEntry(
         CALL_TYPE_WRITE_COIL,
-        "value",
+        "bits",
         "write_coil",
+        "value",
     ),
     ConfEntry(
         CALL_TYPE_WRITE_COILS,
         "count",
         "write_coils",
+        "values",
     ),
     ConfEntry(
         CALL_TYPE_WRITE_REGISTER,
-        "value",
+        "registers",
         "write_register",
+        "value",
     ),
     ConfEntry(
         CALL_TYPE_WRITE_REGISTERS,
         "count",
         "write_registers",
+        "values",
     ),
 ]
 
@@ -322,7 +330,9 @@ class ModbusHub:
 
         for entry in PB_CALL:
             func = getattr(self._client, entry.func_name)
-            self._pb_request[entry.call_type] = RunEntry(entry.attr, func)
+            self._pb_request[entry.call_type] = RunEntry(
+                entry.attr, func, entry.value_attr_name
+            )
 
         self.hass.async_create_background_task(
             self.async_pb_connect(), "modbus-connect"
@@ -368,10 +378,11 @@ class ModbusHub:
         self, slave: int | None, address: int, value: int | list[int], use_call: str
     ) -> ModbusPDU | None:
         """Call sync. pymodbus."""
-        kwargs = {"slave": slave} if slave else {}
+        kwargs: dict[str, Any] = {"slave": slave} if slave else {}
         entry = self._pb_request[use_call]
+        kwargs[entry.value_attr_name] = value
         try:
-            result: ModbusPDU = await entry.func(address, value, **kwargs)
+            result: ModbusPDU = await entry.func(address, **kwargs)
         except ModbusException as exception_error:
             error = f"Error: device: {slave} address: {address} -> {exception_error!s}"
             self._log_error(error)

tests/components/modbus/test_climate.py

@@ -394,7 +394,7 @@ async def test_hvac_onoff_values(hass: HomeAssistant, mock_modbus) -> None:
     )
     await hass.async_block_till_done()
 
-    mock_modbus.write_register.assert_called_with(11, 0xAA, slave=10)
+    mock_modbus.write_register.assert_called_with(11, value=0xAA, slave=10)
 
     await hass.services.async_call(
         CLIMATE_DOMAIN,
@@ -404,7 +404,7 @@ async def test_hvac_onoff_values(hass: HomeAssistant, mock_modbus) -> None:
     )
     await hass.async_block_till_done()
 
-    mock_modbus.write_register.assert_called_with(11, 0xFF, slave=10)
+    mock_modbus.write_register.assert_called_with(11, value=0xFF, slave=10)
 
 
 @pytest.mark.parametrize(

tests/components/modbus/test_init.py

@@ -846,6 +846,13 @@ async def test_pb_service_write(
         CALL_TYPE_WRITE_REGISTERS: mock_modbus_with_pymodbus.write_registers,
     }
 
+    value_arg_name = {
+        CALL_TYPE_WRITE_COIL: "value",
+        CALL_TYPE_WRITE_COILS: "values",
+        CALL_TYPE_WRITE_REGISTER: "value",
+        CALL_TYPE_WRITE_REGISTERS: "values",
+    }
+
     data = {
         ATTR_HUB: TEST_MODBUS_NAME,
         do_slave: 17,
@@ -858,10 +865,12 @@ async def test_pb_service_write(
     func_name[do_write[FUNC]].return_value = do_return[VALUE]
     await hass.services.async_call(DOMAIN, do_write[SERVICE], data, blocking=True)
     assert func_name[do_write[FUNC]].called
-    assert func_name[do_write[FUNC]].call_args[0] == (
+    assert func_name[do_write[FUNC]].call_args.args == (data[ATTR_ADDRESS],)
-        data[ATTR_ADDRESS],
+    assert func_name[do_write[FUNC]].call_args.kwargs == {
-        data[do_write[DATA]],
+        "slave": 17,
-    )
+        value_arg_name[do_write[FUNC]]: data[do_write[DATA]],
+    }
+
     if do_return[DATA]:
         assert any(message.startswith("Pymodbus:") for message in caplog.messages)