Refactor: rename SimDUT, restructure DUT simulation and test flow

src/instruments/power_supply.py

@@ -0,0 +1,59 @@
+"""
+Power Supply controller
+
+This module provides a high-level interface to control a programmable power supply.
+It supports setting voltage, enabling/disabling output, and measuring values from the supply.
+Communication is delegated to a backend (e.g., SCPI, dummy simulator).
+"""
+
+import logging
+
+logger = logging.getLogger(__name__)
+
+
+class PowerSupply:
+    def __init__(self, comm):
+        """
+        Initialize the power supply interface.
+
+        Args:
+            comm: A communication backend object that implements `write()` and `query()` methods.
+        """
+        self.comm = comm
+        logger.info("PowerSupply interface initialized.")
+
+    def set_voltage(self, voltage: float):
+        """
+        Set the output voltage of the power supply.
+
+        Args:
+            voltage: The desired voltage in volts.
+        """
+        logger.debug(f"Setting voltage to {voltage:.2f}V")
+        self.comm.write(f"VOLT {voltage}")
+
+    def enable_output(self, enable: bool):
+        """
+        Enable or disable the power supply output.
+
+        Args:
+            enable: True to enable output, False to disable.
+        """
+        command = "OUTP ON" if enable else "OUTP OFF"
+        logger.debug(f"Setting output state: {command}")
+        self.comm.write(command)
+
+    def measure_voltage(self) -> float:
+        """
+        Measure and return the current output voltage.
+
+        Returns:
+            The measured voltage in volts.
+        """
+        response = self.comm.query("MEAS:VOLT?")
+        logger.debug(f"Measured voltage response: {response}")
+        try:
+            return float(response.strip())
+        except ValueError:
+            logger.error(f"Invalid voltage response: {response}")
+            return float('nan')