Update temperature script
This commit is contained in:
parent
46c8478c12
commit
4671a96e3d
|
|
@ -1,95 +1,161 @@
|
|||
#!/usr/bin/env python
|
||||
|
||||
try:
|
||||
import gobject # Python 2.x
|
||||
except:
|
||||
from gi.repository import GLib as gobject # Python 3.x
|
||||
import platform
|
||||
|
||||
# import normal packages
|
||||
import platform
|
||||
import logging
|
||||
import sys
|
||||
import os
|
||||
import sys
|
||||
if sys.version_info.major == 2:
|
||||
import gobject
|
||||
else:
|
||||
from gi.repository import GLib as gobject
|
||||
import sys
|
||||
import time
|
||||
import requests # for http GET
|
||||
try:
|
||||
import thread # for daemon = True / Python 2.x
|
||||
except:
|
||||
import _thread as thread # for daemon = True / Python 3.x
|
||||
|
||||
# our own packages
|
||||
sys.path.insert(1, os.path.join(os.path.dirname(__file__), '../ext/velib_python'))
|
||||
|
||||
# our own packages from victron
|
||||
sys.path.insert(1, os.path.join(os.path.dirname(__file__), '/opt/victronenergy/dbus-systemcalc-py/ext/velib_python'))
|
||||
from vedbus import VeDbusService
|
||||
|
||||
path_UpdateIndex = '/UpdateIndex'
|
||||
|
||||
|
||||
class NodeRedTempOutside:
|
||||
def __init__(self, servicename, deviceinstance, paths, productname='External temp sensor', connection='NodeRED local'):
|
||||
self._dbusservice = VeDbusService(servicename)
|
||||
class NodeRedMeterTemperature:
|
||||
def __init__(self, servicename, deviceinstance, paths, productname='External temp sensor', connection='Node RED HTTP JSON service'):
|
||||
self._dbusservice = VeDbusService("{}.http_{:02d}".format(servicename, deviceinstance))
|
||||
self._paths = paths
|
||||
|
||||
|
||||
logging.debug("%s /DeviceInstance = %d" % (servicename, deviceinstance))
|
||||
|
||||
|
||||
# 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', connection)
|
||||
|
||||
|
||||
# Create the mandatory objects
|
||||
self._dbusservice.add_path('/DeviceInstance', deviceinstance)
|
||||
self._dbusservice.add_path('/ProductId', 0xFFFF) # like ruvii sensors, for symbol only
|
||||
self._dbusservice.add_path('/ProductId', 41314)
|
||||
self._dbusservice.add_path('/FilterLength', 10)
|
||||
self._dbusservice.add_path('/Offset', 0)
|
||||
self._dbusservice.add_path('/Scale', 1)
|
||||
self._dbusservice.add_path('/ProductName', productname)
|
||||
self._dbusservice.add_path('/CustomName', "Temperatur Außen")
|
||||
self._dbusservice.add_path('/TemperatureType', 2) # 0=battery; 1=fridge; 2=generic
|
||||
self._dbusservice.add_path('/FirmwareVersion', 1.0)
|
||||
self._dbusservice.add_path('/HardwareVersion', 0)
|
||||
self._dbusservice.add_path('/Connected', 1)
|
||||
|
||||
self._dbusservice.add_path('/Serial', 1337)
|
||||
self._dbusservice.add_path('/UpdateIndex', 0)
|
||||
|
||||
# add path values to dbus
|
||||
for path, settings in self._paths.items():
|
||||
self._dbusservice.add_path(
|
||||
path, settings['initial'], writeable=True, onchangecallback=self._handlechangedvalue)
|
||||
|
||||
path, settings['initial'], gettextcallback=settings['textformat'], writeable=True, onchangecallback=self._handlechangedvalue)
|
||||
|
||||
# last update
|
||||
self._lastUpdate = 0
|
||||
|
||||
# add _update function 'timer'
|
||||
gobject.timeout_add(2000, self._update) # pause 2000ms before the next request
|
||||
|
||||
def _update(self):
|
||||
try:
|
||||
nodered_url = "http://localhost:1880/temps"
|
||||
nodered_r = requests.get(url=nodered_url) # request data from Node RED HTTP JSON API
|
||||
nodered_data = nodered_r.json() # convert JSON data
|
||||
nodered_temperature = nodered_data['outside']
|
||||
|
||||
self._dbusservice['/Temperature'] = float(nodered_temperature)
|
||||
self._dbusservice['/TemperatureType'] = 2 # 0=battery; 1=fridge; 2=generic
|
||||
self._dbusservice['/CustomName'] = "Temperatur Außen"
|
||||
logging.info("Temperature reading: {:.0f}".format(nodered_temperature))
|
||||
except:
|
||||
logging.info("WARNING: Could not read from Node Red, check if Node Red service is running")
|
||||
index = self._dbusservice[path_UpdateIndex] + 1 # increment index
|
||||
if index > 255: # maximum value of the index
|
||||
index = 0 # overflow from 255 to 0
|
||||
self._dbusservice[path_UpdateIndex] = index
|
||||
|
||||
# add _signOfLife 'timer' to get feedback in log every 5minutes
|
||||
gobject.timeout_add(self._getSignOfLifeInterval()*60*1000, self._signOfLife)
|
||||
|
||||
def _getSignOfLifeInterval(self):
|
||||
value = 1
|
||||
|
||||
if not value:
|
||||
value = 0
|
||||
|
||||
return int(value)
|
||||
|
||||
def _getNodeRedData(self):
|
||||
URL = "http://localhost:1880/temps"
|
||||
temperature_r = requests.get(url = URL)
|
||||
|
||||
# check for response
|
||||
if not temperature_r:
|
||||
raise ConnectionError("No response from NodeRed - %s" % (URL))
|
||||
|
||||
meter_data = temperature_r.json()
|
||||
|
||||
# check for Json
|
||||
if not meter_data:
|
||||
raise ValueError("Converting response to JSON failed")
|
||||
|
||||
|
||||
return meter_data
|
||||
|
||||
|
||||
def _signOfLife(self):
|
||||
logging.info("--- Start: sign of life ---")
|
||||
logging.info("Last _update() call: %s" % (self._lastUpdate))
|
||||
logging.info("Last '/Temperature': %s" % (self._dbusservice['/Temperature']))
|
||||
logging.info("--- End: sign of life ---")
|
||||
return True
|
||||
|
||||
def _update(self):
|
||||
try:
|
||||
#get data from NodeRed 3em
|
||||
meter_data = self._getNodeRedData()
|
||||
|
||||
#send data to DBus
|
||||
self._dbusservice['/Temperature'] = meter_data['outside']
|
||||
#logging
|
||||
logging.debug("Temperature Outside (/Temperature): %s" % (self._dbusservice['/Temperature']))
|
||||
logging.debug("---");
|
||||
|
||||
# increment UpdateIndex - to show that new data is available
|
||||
index = self._dbusservice['/UpdateIndex'] + 1 # increment index
|
||||
if index > 255: # maximum value of the index
|
||||
index = 0 # overflow from 255 to 0
|
||||
self._dbusservice['/UpdateIndex'] = index
|
||||
|
||||
#update lastupdate vars
|
||||
self._lastUpdate = time.time()
|
||||
except Exception as e:
|
||||
logging.critical('Error at %s', '_update', exc_info=e)
|
||||
|
||||
# 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
|
||||
return True
|
||||
|
||||
def _handlechangedvalue(self, path, value):
|
||||
logging.debug("someone else updated %s to %s" % (path, value))
|
||||
return True # accept the change
|
||||
|
||||
|
||||
|
||||
def main():
|
||||
logging.basicConfig(level=logging.DEBUG) # use .INFO for less logging
|
||||
thread.daemon = True # allow the program to quit
|
||||
|
||||
from dbus.mainloop.glib import DBusGMainLoop
|
||||
# Have a mainloop, so we can send/receive asynchronous calls to and from dbus
|
||||
DBusGMainLoop(set_as_default=True)
|
||||
|
||||
pvac_output = NodeRedTempOutside(
|
||||
servicename='com.victronenergy.temperature',
|
||||
deviceinstance=28,
|
||||
paths={
|
||||
'/Temperature': {'initial': 0},
|
||||
'/TemperatureType': {'initial': 0},
|
||||
'/CustomName': {'initial': 0},
|
||||
path_UpdateIndex: {'initial': 0},
|
||||
})
|
||||
|
||||
logging.info('Connected to dbus, and switching over to gobject.MainLoop() (= event based)')
|
||||
mainloop = gobject.MainLoop()
|
||||
mainloop.run()
|
||||
|
||||
#configure logging
|
||||
logging.basicConfig( format='%(asctime)s,%(msecs)d %(name)s %(levelname)s %(message)s',
|
||||
datefmt='%Y-%m-%d %H:%M:%S',
|
||||
level=logging.INFO,
|
||||
handlers=[
|
||||
logging.FileHandler("%s/current.log" % (os.path.dirname(os.path.realpath(__file__)))),
|
||||
logging.StreamHandler()
|
||||
])
|
||||
|
||||
try:
|
||||
logging.info("Start");
|
||||
|
||||
from dbus.mainloop.glib import DBusGMainLoop
|
||||
# Have a mainloop, so we can send/receive asynchronous calls to and from dbus
|
||||
DBusGMainLoop(set_as_default=True)
|
||||
|
||||
#formatting
|
||||
_celcius = lambda p, v: (str(round(v, 2)) + ' °C')
|
||||
|
||||
#start our main-service
|
||||
pvac_output = NodeRedMeterTemperature(
|
||||
servicename='com.victronenergy.temperature',
|
||||
deviceinstance=18,
|
||||
paths={
|
||||
'/Temperature': {'initial': 0, 'textformat': _celcius},
|
||||
})
|
||||
|
||||
logging.info('Connected to dbus, and switching over to gobject.MainLoop() (= event based)')
|
||||
mainloop = gobject.MainLoop()
|
||||
mainloop.run()
|
||||
except Exception as e:
|
||||
logging.critical('Error at %s', 'main', exc_info=e)
|
||||
if __name__ == "__main__":
|
||||
main()
|
||||
Loading…
Reference in a new issue