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@tserong
Created November 9, 2023 08:07
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Set the minum state of charge to the specified value, or zero if it's a maintenance day and the --check-maintenance paramenter is set.
#!/usr/bin/env python3
import argparse
import dbus
import logging
import requests
from datetime import datetime
# Note that when log output lands in /var/log/messages via cron, lines are
# truncated at about 250 characters for some reason.
logging.basicConfig(level=logging.INFO, format='set-minsoc.py: %(levelname)s: %(message)s')
logger = logging.getLogger(__name__)
HOURS = 60 * 60
DAYS = 60 * 60 * 24
def is_maintenance_day():
# If it's less than 24 hours until maintenance is due when
# this script is run, we know today is a maintenance day
status = requests.get(f'http://{args.bms_ip}:3000/rest/1.0/status').json()
strip_pump_run_target = status['list'][0]['strip_pump_run_target']
strip_pump_run_timer = status['list'][0]['strip_pump_run_timer']
next_strip = strip_pump_run_target - strip_pump_run_timer
return next_strip / DAYS < 1.3
def set_min_soc():
try:
bus = dbus.SystemBus()
o = bus.get_object('com.victronenergy.settings',
'/Settings/CGwacs/BatteryLife/MinimumSocLimit')
if args.check_maintenance and is_maintenance_day():
o.SetValue(0)
logger.info("Set MinSOC 0% (maintenance day)")
else:
o.SetValue(args.min_soc)
logger.info(f"Set MinSOC {args.min_soc}%")
except Exception as e:
logger.error(e)
if __name__ == "__main__":
parser = argparse.ArgumentParser("Set MinSoC")
parser.add_argument("bms_ip", help="ZCell BMS IP address")
parser.add_argument("min_soc", help="Minimum SOC to set")
parser.add_argument("--check-maintenance", help="Sets MinSOC to zero if it's a maintenance day",
action="store_true")
args = parser.parse_args()
set_min_soc()
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