Add missing client calls in mixin.py. (#1206)

Author: janiversen

API_changes.rst

@@ -6,6 +6,9 @@ PyModbus - API changes.
 Version 3.1.0
 -------------
 Added --host to client_* examples, to allow easier use.
+unit= in client calls are no longer converted to slave=, but raises a runtime exception.
+Added missing client calls (all standard request are not available as methods).
+client.mask_write_register() changed parameters.
 
 ---------------------
 Version 3.0.1 / 3.0.2

examples/client_calls.py

@@ -180,7 +180,7 @@ async def _handle_holding_registers(client):
         "write_address": 1,
         "write_registers": [256, 128, 100, 50, 25, 10, 5, 1],
     }
-    _check_call(await client.readwrite_registers(unit=SLAVE, **arguments))
+    _check_call(await client.readwrite_registers(slave=SLAVE, **arguments))
     rr = _check_call(await client.read_holding_registers(1, 8, slave=SLAVE))
     assert rr.registers == arguments["write_registers"]
 

pymodbus/client/base.py

@@ -60,10 +60,13 @@ def run():
             rr = client.read_coils(0x01)
             client.close()
 
-
     **Application methods, common to all clients**:
     """
 
+    state = ModbusTransactionState.IDLE
+    last_frame_end = 0
+    silent_interval = 0
+
     @dataclass
     class _params:  # pylint: disable=too-many-instance-attributes
         """Parameter class."""