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dbushelper.py
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dbushelper.py
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# -*- coding: utf-8 -*-
import sys
import os
import platform
import dbus
import traceback
# Victron packages
sys.path.insert(
1,
os.path.join(
os.path.dirname(__file__),
"/opt/victronenergy/dbus-systemcalc-py/ext/velib_python",
),
)
from vedbus import VeDbusService
from settingsdevice import SettingsDevice
import battery
from utils import *
def get_bus():
return (
dbus.SessionBus()
if "DBUS_SESSION_BUS_ADDRESS" in os.environ
else dbus.SystemBus()
)
class DbusHelper:
def __init__(self, battery):
self.battery = battery
self.instance = 1
self.settings = None
self.error_count = 0
self._dbusservice = VeDbusService(
"com.victronenergy.battery."
+ self.battery.port[self.battery.port.rfind("/") + 1 :],
get_bus(),
)
def setup_instance(self):
# bms_id = self.battery.production if self.battery.production is not None else \
# self.battery.port[self.battery.port.rfind('/') + 1:]
bms_id = self.battery.port[self.battery.port.rfind("/") + 1 :]
path = "/Settings/Devices/serialbattery"
default_instance = "battery:1"
settings = {
"instance": [
path + "_" + str(bms_id).replace(" ", "_") + "/ClassAndVrmInstance",
default_instance,
0,
0,
],
# 'CellVoltageMin': [path + '/CellVoltageMin', 2.8, 0.0, 5.0],
# 'CellVoltageMax': [path + '/CellVoltageMax', 3.45, 0.0, 5.0],
# 'CellVoltageFloat': [path + '/CellVoltageFloat', 3.35, 0.0, 5.0],
# 'VoltageMaxTime': [path + '/VoltageMaxTime', 900, 0, 0],
# 'VoltageResetSocLimit': [path + '/VoltageResetSocLimit', 90, 0, 100],
# 'MaxChargeCurrent': [path + '/MaxCurrentCharge', 5, 0.0, 500],
# 'MaxDischargeCurrent': [path + '/MaxCurrentDischarge', 7, 0.0, 500],
# 'AllowDynamicChargeCurrent': [path + '/AllowDynamicChargeCurrent', 1, 0, 1],
# 'AllowDynamicDischargeCurrent': [path + '/AllowDynamicDischargeCurrent', 1, 0, 1],
# 'AllowDynamicChargeVoltage': [path + '/AllowDynamicChargeVoltage', 0, 0, 1],
# 'SocLowWarning': [path + '/SocLowWarning', 20, 0, 100],
# 'SocLowAlarm': [path + '/SocLowAlarm', 10, 0, 100],
# 'Capacity': [path + '/Capacity', '', 0, 500],
# 'EnableInvertedCurrent': [path + '/EnableInvertedCurrent', 0, 0, 1],
# 'CCMSocLimitCharge1': [path + '/CCMSocLimitCharge1', 98, 0, 100],
# 'CCMSocLimitCharge2': [path + '/CCMSocLimitCharge2', 95, 0, 100],
# 'CCMSocLimitCharge3': [path + '/CCMSocLimitCharge3', 91, 0, 100],
# 'CCMSocLimitDischarge1': [path + '/CCMSocLimitDischarge1', 10, 0, 100],
# 'CCMSocLimitDischarge2': [path + '/CCMSocLimitDischarge2', 20, 0, 100],
# 'CCMSocLimitDischarge3': [path + '/CCMSocLimitDischarge3', 30, 0, 100],
# 'CCMCurrentLimitCharge1': [path + '/CCMCurrentLimitCharge1', 5, 0, 100],
# 'CCMCurrentLimitCharge2': [path + '/CCMCurrentLimitCharge2', '', 0, 100],
# 'CCMCurrentLimitCharge3': [path + '/CCMCurrentLimitCharge3', '', 0, 100],
# 'CCMCurrentLimitDischarge1': [path + '/CCMCurrentLimitDischarge1', 5, 0, 100],
# 'CCMCurrentLimitDischarge2': [path + '/CCMCurrentLimitDischarge2', '', 0, 100],
# 'CCMCurrentLimitDischarge3': [path + '/CCMCurrentLimitDischarge3', '', 0, 100],
}
self.settings = SettingsDevice(get_bus(), settings, self.handle_changed_setting)
self.battery.role, self.instance = self.get_role_instance()
def get_role_instance(self):
val = self.settings["instance"].split(":")
logger.info("DeviceInstance = %d", int(val[1]))
return val[0], int(val[1])
def handle_changed_setting(self, setting, oldvalue, newvalue):
if setting == "instance":
self.battery.role, self.instance = self.get_role_instance()
logger.info("Changed DeviceInstance = %d", self.instance)
return
logger.info(
"Changed DeviceInstance = %d", float(self.settings["CellVoltageMin"])
)
# self._dbusservice['/History/ChargeCycles']
def setup_vedbus(self):
# Set up dbus service and device instance
# and notify of all the attributes we intend to update
# This is only called once when a battery is initiated
self.setup_instance()
short_port = self.battery.port[self.battery.port.rfind("/") + 1 :]
logger.info("%s" % ("com.victronenergy.battery." + short_port))
# Get the settings for the battery
if not self.battery.get_settings():
return False
# Create the management objects, as specified in the ccgx dbus-api document
self._dbusservice.add_path("/Mgmt/ProcessName", __file__)
self._dbusservice.add_path(
"/Mgmt/ProcessVersion", "Python " + platform.python_version()
)
self._dbusservice.add_path("/Mgmt/Connection", "Serial " + self.battery.port)
# Create the mandatory objects
self._dbusservice.add_path("/DeviceInstance", self.instance)
self._dbusservice.add_path("/ProductId", 0x0)
self._dbusservice.add_path(
"/ProductName", "SerialBattery(" + self.battery.type + ")"
)
self._dbusservice.add_path(
"/FirmwareVersion", str(DRIVER_VERSION) + DRIVER_SUBVERSION
)
self._dbusservice.add_path("/HardwareVersion", self.battery.hardware_version)
self._dbusservice.add_path("/Connected", 1)
self._dbusservice.add_path(
"/CustomName", "SerialBattery(" + self.battery.type + ")", writeable=True
)
# Create static battery info
self._dbusservice.add_path(
"/Info/BatteryLowVoltage", self.battery.min_battery_voltage, writeable=True
)
self._dbusservice.add_path(
"/Info/MaxChargeVoltage",
self.battery.max_battery_voltage,
writeable=True,
gettextcallback=lambda p, v: "{:0.2f}V".format(v),
)
self._dbusservice.add_path(
"/Info/MaxChargeCurrent",
self.battery.max_battery_charge_current,
writeable=True,
gettextcallback=lambda p, v: "{:0.2f}A".format(v),
)
self._dbusservice.add_path(
"/Info/MaxDischargeCurrent",
self.battery.max_battery_discharge_current,
writeable=True,
gettextcallback=lambda p, v: "{:0.2f}A".format(v),
)
self._dbusservice.add_path(
"/System/NrOfCellsPerBattery", self.battery.cell_count, writeable=True
)
self._dbusservice.add_path("/System/NrOfModulesOnline", 1, writeable=True)
self._dbusservice.add_path("/System/NrOfModulesOffline", 0, writeable=True)
self._dbusservice.add_path(
"/System/NrOfModulesBlockingCharge", None, writeable=True
)
self._dbusservice.add_path(
"/System/NrOfModulesBlockingDischarge", None, writeable=True
)
self._dbusservice.add_path(
"/Capacity",
self.battery.get_capacity_remain(),
writeable=True,
gettextcallback=lambda p, v: "{:0.2f}Ah".format(v),
)
self._dbusservice.add_path(
"/InstalledCapacity",
self.battery.capacity,
writeable=True,
gettextcallback=lambda p, v: "{:0.0f}Ah".format(v),
)
self._dbusservice.add_path(
"/ConsumedAmphours",
None,
writeable=True,
gettextcallback=lambda p, v: "{:0.0f}Ah".format(v),
)
# Not used at this stage
# self._dbusservice.add_path('/System/MinTemperatureCellId', None, writeable=True)
# self._dbusservice.add_path('/System/MaxTemperatureCellId', None, writeable=True)
# Create SOC, DC and System items
self._dbusservice.add_path("/Soc", None, writeable=True)
self._dbusservice.add_path(
"/Dc/0/Voltage",
None,
writeable=True,
gettextcallback=lambda p, v: "{:2.2f}V".format(v),
)
self._dbusservice.add_path(
"/Dc/0/Current",
None,
writeable=True,
gettextcallback=lambda p, v: "{:2.2f}A".format(v),
)
self._dbusservice.add_path(
"/Dc/0/Power",
None,
writeable=True,
gettextcallback=lambda p, v: "{:0.0f}W".format(v),
)
self._dbusservice.add_path("/Dc/0/Temperature", None, writeable=True)
self._dbusservice.add_path(
"/Dc/0/MidVoltage",
None,
writeable=True,
gettextcallback=lambda p, v: "{:0.2f}V".format(v),
)
self._dbusservice.add_path(
"/Dc/0/MidVoltageDeviation",
None,
writeable=True,
gettextcallback=lambda p, v: "{:0.1f}%".format(v),
)
# Create battery extras
self._dbusservice.add_path("/System/MinCellTemperature", None, writeable=True)
self._dbusservice.add_path("/System/MaxCellTemperature", None, writeable=True)
self._dbusservice.add_path(
"/System/MaxCellVoltage",
None,
writeable=True,
gettextcallback=lambda p, v: "{:0.3f}V".format(v),
)
self._dbusservice.add_path("/System/MaxVoltageCellId", None, writeable=True)
self._dbusservice.add_path(
"/System/MinCellVoltage",
None,
writeable=True,
gettextcallback=lambda p, v: "{:0.3f}V".format(v),
)
self._dbusservice.add_path("/System/MinVoltageCellId", None, writeable=True)
self._dbusservice.add_path("/History/ChargeCycles", None, writeable=True)
self._dbusservice.add_path("/History/TotalAhDrawn", None, writeable=True)
self._dbusservice.add_path("/Balancing", None, writeable=True)
self._dbusservice.add_path("/Io/AllowToCharge", 0, writeable=True)
self._dbusservice.add_path("/Io/AllowToDischarge", 0, writeable=True)
# self._dbusservice.add_path('/SystemSwitch',1,writeable=True)
# Create the alarms
self._dbusservice.add_path("/Alarms/LowVoltage", None, writeable=True)
self._dbusservice.add_path("/Alarms/HighVoltage", None, writeable=True)
self._dbusservice.add_path("/Alarms/LowCellVoltage", None, writeable=True)
self._dbusservice.add_path("/Alarms/HighCellVoltage", None, writeable=True)
self._dbusservice.add_path("/Alarms/LowSoc", None, writeable=True)
self._dbusservice.add_path("/Alarms/HighChargeCurrent", None, writeable=True)
self._dbusservice.add_path("/Alarms/HighDischargeCurrent", None, writeable=True)
self._dbusservice.add_path("/Alarms/CellImbalance", None, writeable=True)
self._dbusservice.add_path("/Alarms/InternalFailure", None, writeable=True)
self._dbusservice.add_path(
"/Alarms/HighChargeTemperature", None, writeable=True
)
self._dbusservice.add_path("/Alarms/LowChargeTemperature", None, writeable=True)
self._dbusservice.add_path("/Alarms/HighTemperature", None, writeable=True)
self._dbusservice.add_path("/Alarms/LowTemperature", None, writeable=True)
# cell voltages
if BATTERY_CELL_DATA_FORMAT > 0:
for i in range(1, self.battery.cell_count + 1):
cellpath = (
"/Cell/%s/Volts"
if (BATTERY_CELL_DATA_FORMAT & 2)
else "/Voltages/Cell%s"
)
self._dbusservice.add_path(
cellpath % (str(i)),
None,
writeable=True,
gettextcallback=lambda p, v: "{:0.3f}V".format(v),
)
if BATTERY_CELL_DATA_FORMAT & 1:
self._dbusservice.add_path(
"/Balances/Cell%s" % (str(i)), None, writeable=True
)
pathbase = "Cell" if (BATTERY_CELL_DATA_FORMAT & 2) else "Voltages"
self._dbusservice.add_path(
"/%s/Sum" % pathbase,
None,
writeable=True,
gettextcallback=lambda p, v: "{:2.2f}V".format(v),
)
self._dbusservice.add_path(
"/%s/Diff" % pathbase,
None,
writeable=True,
gettextcallback=lambda p, v: "{:0.3f}V".format(v),
)
# Create TimeToSoC items
for num in TIME_TO_SOC_POINTS:
self._dbusservice.add_path("/TimeToSoC/" + str(num), None, writeable=True)
#Create TimeToGO item
self._dbusservice.add_path("/TimeToGo", None, writeable=True)
logger.info(f"publish config values = {PUBLISH_CONFIG_VALUES}")
if PUBLISH_CONFIG_VALUES == 1:
publish_config_variables(self._dbusservice)
return True
def publish_battery(self, loop):
# This is called every battery.poll_interval milli second as set up per battery type to read and update the data
try:
# Call the battery's refresh_data function
success = self.battery.refresh_data()
if success:
self.error_count = 0
self.battery.online = True
else:
self.error_count += 1
# If the battery is offline for more than 10 polls (polled every second for most batteries)
if self.error_count >= 10:
self.battery.online = False
# Has it completely failed
if self.error_count >= 60:
loop.quit()
# This is to mannage CCL\DCL
self.battery.manage_charge_current()
# This is to mannage CVCL
self.battery.manage_charge_voltage()
# publish all the data from the battery object to dbus
self.publish_dbus()
except:
traceback.print_exc()
loop.quit()
def publish_dbus(self):
# Update SOC, DC and System items
self._dbusservice["/System/NrOfCellsPerBattery"] = self.battery.cell_count
self._dbusservice["/Soc"] = round(self.battery.soc, 2)
self._dbusservice["/Dc/0/Voltage"] = round(self.battery.voltage, 2)
self._dbusservice["/Dc/0/Current"] = round(self.battery.current, 2)
self._dbusservice["/Dc/0/Power"] = round(
self.battery.voltage * self.battery.current, 2
)
self._dbusservice["/Dc/0/Temperature"] = self.battery.get_temp()
self._dbusservice["/Capacity"] = self.battery.get_capacity_remain()
self._dbusservice["/ConsumedAmphours"] = (
0
if self.battery.capacity is None
or self.battery.get_capacity_remain() is None
else self.battery.capacity - self.battery.get_capacity_remain()
)
midpoint, deviation = self.battery.get_midvoltage()
if midpoint is not None:
self._dbusservice["/Dc/0/MidVoltage"] = midpoint
self._dbusservice["/Dc/0/MidVoltageDeviation"] = deviation
# Update battery extras
self._dbusservice["/History/ChargeCycles"] = self.battery.cycles
self._dbusservice["/History/TotalAhDrawn"] = self.battery.total_ah_drawn
self._dbusservice["/Io/AllowToCharge"] = (
1 if self.battery.charge_fet and self.battery.control_allow_charge else 0
)
self._dbusservice["/Io/AllowToDischarge"] = (
1
if self.battery.discharge_fet and self.battery.control_allow_discharge
else 0
)
self._dbusservice["/System/NrOfModulesBlockingCharge"] = (
0
if self.battery.charge_fet is None
or (self.battery.charge_fet and self.battery.control_allow_charge)
else 1
)
self._dbusservice["/System/NrOfModulesBlockingDischarge"] = (
0 if self.battery.discharge_fet is None or self.battery.discharge_fet else 1
)
self._dbusservice["/System/NrOfModulesOnline"] = 1 if self.battery.online else 0
self._dbusservice["/System/NrOfModulesOffline"] = (
0 if self.battery.online else 1
)
self._dbusservice["/System/MinCellTemperature"] = self.battery.get_min_temp()
self._dbusservice["/System/MaxCellTemperature"] = self.battery.get_max_temp()
# Charge control
self._dbusservice[
"/Info/MaxChargeCurrent"
] = self.battery.control_charge_current
self._dbusservice[
"/Info/MaxDischargeCurrent"
] = self.battery.control_discharge_current
# Voltage control
self._dbusservice["/Info/MaxChargeVoltage"] = self.battery.control_voltage
# Updates from cells
self._dbusservice["/System/MinVoltageCellId"] = self.battery.get_min_cell_desc()
self._dbusservice["/System/MaxVoltageCellId"] = self.battery.get_max_cell_desc()
self._dbusservice[
"/System/MinCellVoltage"
] = self.battery.get_min_cell_voltage()
self._dbusservice[
"/System/MaxCellVoltage"
] = self.battery.get_max_cell_voltage()
self._dbusservice["/Balancing"] = self.battery.get_balancing()
# Update the alarms
self._dbusservice["/Alarms/LowVoltage"] = self.battery.protection.voltage_low
self._dbusservice[
"/Alarms/LowCellVoltage"
] = self.battery.protection.voltage_cell_low
self._dbusservice["/Alarms/HighVoltage"] = self.battery.protection.voltage_high
self._dbusservice["/Alarms/LowSoc"] = self.battery.protection.soc_low
self._dbusservice[
"/Alarms/HighChargeCurrent"
] = self.battery.protection.current_over
self._dbusservice[
"/Alarms/HighDischargeCurrent"
] = self.battery.protection.current_under
self._dbusservice[
"/Alarms/CellImbalance"
] = self.battery.protection.cell_imbalance
self._dbusservice[
"/Alarms/InternalFailure"
] = self.battery.protection.internal_failure
self._dbusservice[
"/Alarms/HighChargeTemperature"
] = self.battery.protection.temp_high_charge
self._dbusservice[
"/Alarms/LowChargeTemperature"
] = self.battery.protection.temp_low_charge
self._dbusservice[
"/Alarms/HighTemperature"
] = self.battery.protection.temp_high_discharge
self._dbusservice[
"/Alarms/LowTemperature"
] = self.battery.protection.temp_low_discharge
# cell voltages
if BATTERY_CELL_DATA_FORMAT > 0:
try:
voltageSum = 0
for i in range(self.battery.cell_count):
voltage = self.battery.get_cell_voltage(i)
cellpath = (
"/Cell/%s/Volts"
if (BATTERY_CELL_DATA_FORMAT & 2)
else "/Voltages/Cell%s"
)
self._dbusservice[cellpath % (str(i + 1))] = voltage
if BATTERY_CELL_DATA_FORMAT & 1:
self._dbusservice[
"/Balances/Cell%s" % (str(i + 1))
] = self.battery.get_cell_balancing(i)
if voltage:
voltageSum += voltage
pathbase = "Cell" if (BATTERY_CELL_DATA_FORMAT & 2) else "Voltages"
self._dbusservice["/%s/Sum" % pathbase] = voltageSum
self._dbusservice["/%s/Diff" % pathbase] = (
self.battery.get_max_cell_voltage()
- self.battery.get_min_cell_voltage()
)
except:
pass
# Update TimeToSoC
try:
if (
self.battery.capacity is not None
and len(TIME_TO_SOC_POINTS) > 0
and self.battery.time_to_soc_update == 0
):
self.battery.time_to_soc_update = TIME_TO_SOC_LOOP_CYCLES
crntPrctPerSec = (
abs(self.battery.current / (self.battery.capacity / 100)) / 3600
)
for num in TIME_TO_SOC_POINTS:
self._dbusservice["/TimeToSoC/" + str(num)] = (
self.battery.get_timetosoc(num, crntPrctPerSec)
if self.battery.current
else None
)
# Update TimeToGo
self._dbusservice["/TimeToGo"] = (
self.battery.get_timetosoc(SOC_LOW_WARNING, crntPrctPerSec)
if self.battery.current
else None
)
else:
self.battery.time_to_soc_update -= 1
except:
pass
logger.debug("logged to dbus [%s]" % str(round(self.battery.soc, 2)))
self.battery.log_cell_data()