update to new soft signal API

src/ophyd_async/sim/demo/sim_motor.py

@@ -10,7 +10,7 @@
 
 
 class SimMotor(StandardReadable, Movable, Stoppable):
-    def __init__(self, prefix: str, name="", instant=True) -> None:
+    def __init__(self, name="", instant=True) -> None:
         """
         Simulated motor device
 
@@ -23,12 +23,10 @@ def __init__(self, prefix: str, name="", instant=True) -> None:
         self._move_task: Optional[asyncio.Task] = None
 
         # Define some signals
-        self.user_setpoint = soft_signal_rw(float, prefix + "user_setpoint", 0)
-        self.user_readback, self._user_readback = soft_signal_r_and_backend(
-            float, prefix + "user_readback", 0
-        )
-        self.velocity = soft_signal_rw(float, prefix + "velocity", 1.0)
-        self.egu = soft_signal_rw(float, prefix + "egu", "mm")
+        self.user_setpoint = soft_signal_rw(float, 0)
+        self.user_readback, self._user_readback = soft_signal_r_and_backend(float, 0)
+        self.velocity = soft_signal_rw(float, 1.0)
+        self.egu = soft_signal_rw(float, "mm")
 
         # Set name and signals for read() and read_configuration()
         self.set_readable_signals(

tests/sim/demo/test_sim_motor.py

@@ -25,7 +25,7 @@ async def test_move_sim_in_plan():
 
 async def test_slow_move():
     async with DeviceCollector():
-        m1 = SimMotor("M1", "sim_motor1", instant=False)
+        m1 = SimMotor("M1", instant=False)
 
     await m1.velocity.set(20)
 
@@ -40,7 +40,7 @@ async def test_slow_move():
 
 async def test_stop():
     async with DeviceCollector():
-        m1 = SimMotor("M1", "sim_motor1", instant=False)
+        m1 = SimMotor("M1", instant=False)
 
     # this move should take 10 seconds but we will stop it after 0.2
     move_status = m1.set(10)