Twister: Add power measurements support for Twister.

Add support for powerShield of stm32l562e_dk board.

Signed-off-by: Arkadiusz Cholewinski <arkadiuszx.cholewinski@intel.com>

Author: gbarkadiusz

scripts/pylib/power-twister-harness/abstract/PowerMonitor.py

@@ -0,0 +1,40 @@
+# Copyright: (c)  2025, Intel Corporation
+# Author: Arkadiusz Cholewinski <arkadiuszx.cholewinski@intel.com>
+
+import string
+from abc import ABC, abstractmethod
+
+
+class PowerMonitor(ABC):
+    @abstractmethod
+    def init(self, device_id: string):
+        """
+        Abstract method to initialize the power monitor.
+
+        Agr:
+            string: Address of the power monitor
+
+        Return:
+            bool: True of False.
+        """
+
+    @abstractmethod
+    def measure(self, duration: int):
+        """
+        Abstract method to measure current with specified measurement time.
+
+        Args:
+            duration (int): The duration of the measurement in seconds.
+        """
+
+    @abstractmethod
+    def get_data(self, duration: int) -> list[float]:
+        """
+        Measure current with specified measurement time.
+
+        Args:
+            duration (int): The duration of the measurement in seconds.
+
+        Returns:
+            List[float]: An array of measured current values in amperes.
+        """

scripts/pylib/power-twister-harness/conftest.py

@@ -0,0 +1,61 @@
+# Copyright: (c)  2025, Intel Corporation
+import json
+import logging
+
+import pytest
+from twister_harness import DeviceAdapter
+
+
+def pytest_addoption(parser):
+    parser.addoption('--testdata')
+
+
+@pytest.fixture
+def probe_class(request, probe_path):
+    path = probe_path  # Get path of power device
+    if request.param == 'stm_powershield':
+        from stm32l562e_dk.PowerShield import PowerShield
+
+        probe = PowerShield()  # Instantiate the power monitor probe
+        probe.connect(path)
+        probe.init()
+
+    yield probe
+
+    if request.param == 'stm_powershield':
+        probe.disconnect()
+
+
+@pytest.fixture(name='probe_path', scope='session')
+def fixture_probe_path(request, dut: DeviceAdapter):
+    for fixture in dut.device_config.fixtures:
+        if fixture.startswith('pm_probe'):
+            probe_port = fixture.split(':')[1]
+    return probe_port
+
+
+@pytest.fixture(name='test_data', scope='session')
+def fixture_test_data(request):
+    # Get test data from the configuration and parse it into a dictionary
+    measurements = request.config.getoption("--testdata")
+    measurements = measurements.replace("'", '"')  # Ensure the data is properly formatted as JSON
+    measurements_dict = json.loads(measurements)
+
+    # Data validation
+    required_keys = [
+        'elements_to_trim',
+        'min_peak_distance',
+        'min_peak_height',
+        'peak_padding',
+        'measurement_duration',
+        'num_of_transitions',
+        'expected_rms_values',
+        'tolerance_percentage',
+    ]
+
+    for key in required_keys:
+        if key not in measurements_dict:
+            logging.error(f"Missing required test data key: {key}")
+            pytest.fail(f"Missing required test data key: {key}")
+
+    return measurements_dict