Add Blocking to DynaCool PPMS During Temperature Ramp

docs/changes/newsfragments/7534.improved_driver

@@ -0,0 +1,3 @@
+Added blocking function to DynaCool PPMS driver that waits for temperature
+state to be stable before allowing other functions to be called when
+setting the temperature.

src/qcodes/instrument_drivers/QuantumDesign/DynaCoolPPMS/DynaCool.py

@@ -44,6 +44,7 @@ class DynaCool(VisaInstrument):
     # the ramp time resolution is in (s) and is used in the
     # _do_blocking_ramp method
     _ramp_time_resolution = 0.1
+    _blocking_t_sleep = 0.5
 
     temp_params = ("temperature_setpoint", "temperature_rate", "temperature_settling")
     field_params = ("field_target", "field_rate", "field_approach")
@@ -83,6 +84,15 @@ def __init__(
         )
         """Parameter temperature_setpoint"""
 
+        self.blocking_t: Parameter = self.add_parameter(
+            "blocking_t",
+            label="Block instrument while ramping temp",
+            unit="K",
+            vals=vals.Numbers(1.6, 400),
+            set_cmd=partial(self._temp_setter, "temperature_setpoint", True),
+        )
+        """Parameter blocking_t will block instrument interaction while temperature is ramping to setpoint."""
+
         self.temperature_rate: Parameter = self.add_parameter(
             "temperature_rate",
             label="Temperature settle rate",
@@ -400,6 +410,7 @@ def _temp_setter(
             "temperature_setpoint", "temperature_rate", "temperature_settling"
         ],
         value: float,
+        block_while_ramping: bool = False,
     ) -> None:
         """
         The setter function for the temperature parameters. All three are set
@@ -411,6 +422,10 @@ def _temp_setter(
 
         self.write(f"TEMP {values[0]}, {values[1]}, {values[2]}")
 
+        if block_while_ramping:
+            while self.temperature_state() != "stable":
+                sleep(self._blocking_t_sleep)
+
     def write(self, cmd: str) -> None:
         """
         Since the error code is always returned, we must read it back