forked from vikt0rm/dbus-goecharger
303 lines
11 KiB
Python
Executable File
303 lines
11 KiB
Python
Executable File
#!/usr/bin/env python
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# import normal packages
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import platform
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import logging
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import sys
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import os
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import sys
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if sys.version_info.major == 2:
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import gobject
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else:
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from gi.repository import GLib as gobject
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import sys
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import time
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import requests # for http GET
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import configparser # for config/ini file
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# our own packages from victron
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sys.path.insert(1, os.path.join(os.path.dirname(__file__), '/opt/victronenergy/dbus-systemcalc-py/ext/velib_python'))
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from vedbus import VeDbusService
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class DbusGoeChargerService:
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def __init__(self, servicename, paths, productname='go-eCharger', connection='go-eCharger HTTP JSON service'):
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config = self._getConfig()
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deviceinstance = int(config['DEFAULT']['Deviceinstance'])
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hardwareVersion = int(config['DEFAULT']['HardwareVersion'])
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self._dbusservice = VeDbusService("{}.http_{:02d}".format(servicename, deviceinstance))
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self._paths = paths
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logging.debug("%s /DeviceInstance = %d" % (servicename, deviceinstance))
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paths_wo_unit = [
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'/Status', # value 'car' 1: charging station ready, no vehicle 2: vehicle loads 3: Waiting for vehicle 4: Charge finished, vehicle still connected
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'/Mode'
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]
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#get data from go-eCharger
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data = self._getGoeChargerData()
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# Create the management objects, as specified in the ccgx dbus-api document
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self._dbusservice.add_path('/Mgmt/ProcessName', __file__)
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self._dbusservice.add_path('/Mgmt/ProcessVersion', 'Unkown version, and running on Python ' + platform.python_version())
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self._dbusservice.add_path('/Mgmt/Connection', connection)
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# Create the mandatory objects
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self._dbusservice.add_path('/DeviceInstance', deviceinstance)
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self._dbusservice.add_path('/ProductId', 0xFFFF) #
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self._dbusservice.add_path('/ProductName', productname)
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self._dbusservice.add_path('/CustomName', productname)
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if data:
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self._dbusservice.add_path('/FirmwareVersion', int(data['fwv'].replace('.', '')))
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self._dbusservice.add_path('/Serial', data['sse'])
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self._dbusservice.add_path('/HardwareVersion', hardwareVersion)
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self._dbusservice.add_path('/Connected', 1)
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self._dbusservice.add_path('/UpdateIndex', 0)
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# add paths without units
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for path in paths_wo_unit:
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self._dbusservice.add_path(path, None)
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# add path values to dbus
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for path, settings in self._paths.items():
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self._dbusservice.add_path(
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path, settings['initial'], gettextcallback=settings['textformat'], writeable=True, onchangecallback=self._handlechangedvalue)
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# last update
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self._lastUpdate = 0
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# charging time in float
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self._chargingTime = 0.0
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# add _update function 'timer'
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gobject.timeout_add(250, self._update) # pause 250ms before the next request
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# add _signOfLife 'timer' to get feedback in log every 5minutes
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gobject.timeout_add(self._getSignOfLifeInterval()*60*1000, self._signOfLife)
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def _getConfig(self):
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config = configparser.ConfigParser()
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config.read("%s/config.ini" % (os.path.dirname(os.path.realpath(__file__))))
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return config
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def _getSignOfLifeInterval(self):
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config = self._getConfig()
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value = config['DEFAULT']['SignOfLifeLog']
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if not value:
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value = 0
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return int(value)
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def _getGoeChargerStatusUrl(self):
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config = self._getConfig()
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accessType = config['DEFAULT']['AccessType']
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if accessType == 'OnPremise':
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URL = "http://%s/status" % (config['ONPREMISE']['Host'])
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else:
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raise ValueError("AccessType %s is not supported" % (config['DEFAULT']['AccessType']))
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return URL
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def _getGoeChargerMqttPayloadUrl(self, parameter, value):
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config = self._getConfig()
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accessType = config['DEFAULT']['AccessType']
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if accessType == 'OnPremise':
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URL = "http://%s/mqtt?payload=%s=%s" % (config['ONPREMISE']['Host'], parameter, value)
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else:
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raise ValueError("AccessType %s is not supported" % (config['DEFAULT']['AccessType']))
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return URL
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def _setGoeChargerValue(self, parameter, value):
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URL = self._getGoeChargerMqttPayloadUrl(parameter, str(value))
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request_data = requests.get(url = URL)
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# check for response
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if not request_data:
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raise ConnectionError("No response from go-eCharger - %s" % (URL))
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json_data = request_data.json()
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# check for Json
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if not json_data:
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raise ValueError("Converting response to JSON failed")
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if json_data[parameter] == str(value):
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return True
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else:
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logging.warning("go-eCharger parameter %s not set to %s" % (parameter, str(value)))
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return False
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def _getGoeChargerData(self):
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URL = self._getGoeChargerStatusUrl()
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try:
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request_data = requests.get(url = URL, timeout=5)
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except Exception:
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return None
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# check for response
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if not request_data:
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raise ConnectionError("No response from go-eCharger - %s" % (URL))
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json_data = request_data.json()
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# check for Json
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if not json_data:
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raise ValueError("Converting response to JSON failed")
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return json_data
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def _signOfLife(self):
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logging.info("--- Start: sign of life ---")
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logging.info("Last _update() call: %s" % (self._lastUpdate))
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logging.info("Last '/Ac/Power': %s" % (self._dbusservice['/Ac/Power']))
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logging.info("--- End: sign of life ---")
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return True
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def _update(self):
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try:
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#get data from go-eCharger
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data = self._getGoeChargerData()
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if data is not None:
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#send data to DBus
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self._dbusservice['/Ac/L1/Power'] = int(data['nrg'][7] * 0.1 * 1000)
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self._dbusservice['/Ac/L2/Power'] = int(data['nrg'][8] * 0.1 * 1000)
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self._dbusservice['/Ac/L3/Power'] = int(data['nrg'][9] * 0.1 * 1000)
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self._dbusservice['/Ac/Power'] = int(data['nrg'][11] * 0.01 * 1000)
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self._dbusservice['/Ac/Voltage'] = int(data['nrg'][0])
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self._dbusservice['/Current'] = max(data['nrg'][4] * 0.1, data['nrg'][5] * 0.1, data['nrg'][6] * 0.1)
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self._dbusservice['/Ac/Energy/Forward'] = int(float(data['eto']) / 10.0)
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self._dbusservice['/StartStop'] = int(data['alw'])
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self._dbusservice['/SetCurrent'] = int(data['amp'])
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self._dbusservice['/MaxCurrent'] = int(data['ama'])
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# update chargingTime, increment charge time only on active charging (2), reset when no car connected (1)
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timeDelta = time.time() - self._lastUpdate
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if int(data['car']) == 2 and self._lastUpdate > 0: # vehicle loads
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self._chargingTime += timeDelta
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elif int(data['car']) == 1: # charging station ready, no vehicle
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self._chargingTime = 0
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self._dbusservice['/ChargingTime'] = int(self._chargingTime)
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self._dbusservice['/Mode'] = 0 # Manual, no control
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config = self._getConfig()
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hardwareVersion = int(config['DEFAULT']['HardwareVersion'])
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if hardwareVersion == 3:
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self._dbusservice['/MCU/Temperature'] = int(data['tma'][0])
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else:
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self._dbusservice['/MCU/Temperature'] = int(data['tmp'])
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# value 'car' 1: charging station ready, no vehicle 2: vehicle loads 3: Waiting for vehicle 4: Charge finished, vehicle still connected
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status = 0
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if int(data['car']) == 1:
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status = 0
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elif int(data['car']) == 2:
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status = 2
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elif int(data['car']) == 3:
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status = 6
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elif int(data['car']) == 4:
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status = 3
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self._dbusservice['/Status'] = status
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#logging
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logging.debug("Wallbox Consumption (/Ac/Power): %s" % (self._dbusservice['/Ac/Power']))
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logging.debug("Wallbox Forward (/Ac/Energy/Forward): %s" % (self._dbusservice['/Ac/Energy/Forward']))
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logging.debug("---")
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# increment UpdateIndex - to show that new data is available
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index = self._dbusservice['/UpdateIndex'] + 1 # increment index
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if index > 255: # maximum value of the index
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index = 0 # overflow from 255 to 0
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self._dbusservice['/UpdateIndex'] = index
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#update lastupdate vars
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self._lastUpdate = time.time()
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else:
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logging.debug("Wallbox is not available")
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except Exception as e:
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logging.critical('Error at %s', '_update', exc_info=e)
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# return true, otherwise add_timeout will be removed from GObject - see docs http://library.isr.ist.utl.pt/docs/pygtk2reference/gobject-functions.html#function-gobject--timeout-add
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return True
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def _handlechangedvalue(self, path, value):
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logging.info("someone else updated %s to %s" % (path, value))
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if path == '/SetCurrent':
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return self._setGoeChargerValue('amp', value)
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elif path == '/StartStop':
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return self._setGoeChargerValue('alw', value)
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elif path == '/MaxCurrent':
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return self._setGoeChargerValue('ama', value)
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else:
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logging.info("mapping for evcharger path %s does not exist" % (path))
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return False
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def main():
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#configure logging
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logging.basicConfig( format='%(asctime)s,%(msecs)d %(name)s %(levelname)s %(message)s',
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datefmt='%Y-%m-%d %H:%M:%S',
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level=logging.INFO,
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handlers=[
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logging.FileHandler("%s/current.log" % (os.path.dirname(os.path.realpath(__file__)))),
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logging.StreamHandler()
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])
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try:
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logging.info("Start")
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from dbus.mainloop.glib import DBusGMainLoop
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# Have a mainloop, so we can send/receive asynchronous calls to and from dbus
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DBusGMainLoop(set_as_default=True)
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#formatting
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_kwh = lambda p, v: (str(round(v, 2)) + 'kWh')
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_a = lambda p, v: (str(round(v, 1)) + 'A')
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_w = lambda p, v: (str(round(v, 1)) + 'W')
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_v = lambda p, v: (str(round(v, 1)) + 'V')
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_degC = lambda p, v: (str(v) + '°C')
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_s = lambda p, v: (str(v) + 's')
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#start our main-service
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pvac_output = DbusGoeChargerService(
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servicename='com.victronenergy.evcharger',
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paths={
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'/Ac/Power': {'initial': 0, 'textformat': _w},
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'/Ac/L1/Power': {'initial': 0, 'textformat': _w},
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'/Ac/L2/Power': {'initial': 0, 'textformat': _w},
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'/Ac/L3/Power': {'initial': 0, 'textformat': _w},
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'/Ac/Energy/Forward': {'initial': 0, 'textformat': _kwh},
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'/ChargingTime': {'initial': 0, 'textformat': _s},
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'/Ac/Voltage': {'initial': 0, 'textformat': _v},
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'/Current': {'initial': 0, 'textformat': _a},
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'/SetCurrent': {'initial': 0, 'textformat': _a},
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'/MaxCurrent': {'initial': 0, 'textformat': _a},
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'/MCU/Temperature': {'initial': 0, 'textformat': _degC},
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'/StartStop': {'initial': 0, 'textformat': lambda p, v: (str(v))}
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}
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)
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logging.info('Connected to dbus, and switching over to gobject.MainLoop() (= event based)')
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mainloop = gobject.MainLoop()
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mainloop.run()
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except Exception as e:
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logging.critical('Error at %s', 'main', exc_info=e)
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if __name__ == "__main__":
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main()
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