hitl_tester.test_cases.bms.test_smbus

 1"""
 2| Test                 | Read all SMBus registers                        |
 3| :------------------- | :---------------------------------------------- |
 4| GitHub Issue(s)      | turnaroundfactor/HITL#307                |
 5| Description          | A quick test to make sure the smbus is working. |
 6"""
 7
 8import time
 9
10import pytest
11
12from hitl_tester.modules.bms import smbus_types
13from hitl_tester.modules.bms.bms_hw import BMSHardware
14from hitl_tester.modules.bms.bms_serial import serial_monitor
15from hitl_tester.modules.bms.plateset import Plateset
16from hitl_tester.modules.bms.smbus import SMBus
17from hitl_tester.modules.bms.smbus_types import SMBusReg
18from hitl_tester.modules.bms_types import BMSFlags
19from hitl_tester.modules.logger import logger
20
21DEFAULT_SOC_PERCENT = 0.80
22DEFAULT_TEMPERATURE_C = 15
23
24_bms = BMSHardware(pytest.flags)  # type: ignore[arg-type]
25_smbus = SMBus()
26
27if hasattr(pytest, "flags") and isinstance(pytest.flags, BMSFlags) and "cell_simulators" in pytest.flags.config:
28    _bms.init()
29    _plateset = Plateset()
30
31    logger.write_info_to_report("Powering down cell sims")
32    for cell in _bms.cells.values():
33        cell.disengage_safety_protocols = True
34        cell.volts = 0.0001
35    time.sleep(5)
36    logger.write_info_to_report("Powering up cell sims")
37    for cell in _bms.cells.values():
38        cell.state_of_charge = DEFAULT_SOC_PERCENT
39        cell.disengage_safety_protocols = False
40    logger.write_info_to_report("Setting temperature to 15°C")
41    _plateset.thermistor1 = DEFAULT_TEMPERATURE_C
42    _plateset.thermistor2 = DEFAULT_TEMPERATURE_C
43    logger.write_debug_to_report("Waiting for BMS to initialize...")
44    time.sleep(10)
45
46
47def test_smbus():
48    """
49    | Requirement          | Read all registers                   |
50    | :------------------- | :----------------------------------- |
51    | GitHub Issue         | turnaroundfactor/HITL#307     |
52    | Pass / Fail Criteria | No errors raised                     |
53    | Estimated Duration   | 1 second                             |
54    """
55    _smbus.write_register(SMBusReg.MANUFACTURING_ACCESS, smbus_types.BMSCommands.FAULT_ENABLE)
56    _smbus.write_register(SMBusReg.AT_RATE, smbus_types.BMSCommands.FAULT_ENABLE)
57
58    for register in SMBusReg:
59        data = _smbus.read_register(register)
60        logger.write_info_to_report(f"{register.fname}: {data}")
61
62
63def test_loop_smbus():
64    """
65    | Requirement          | Run a full smbus test repeatedly, outputting serial |
66    | :------------------- | :-------------------------------------------------- |
67    | GitHub Issue         | turnaroundfactor/battery-benchtop-rev1#274          |
68    | Instructions         | Output SMBus and serial in a loop                   |
69    | Pass / Fail Criteria | No errors raised                                    |
70    | Estimated Duration   | 0 seconds                                           |
71    """
72    while True:
73        test_smbus()
74        logger.write_debug_to_report("Waiting for serial...")
75        logger.write_debug_to_report(str(serial_monitor.read()))
76        time.sleep(5)