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5 changed files with 72 additions and 405 deletions
4
.gitignore
vendored
4
.gitignore
vendored
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@ -1,4 +0,0 @@
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__pycache__/
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*.pyc
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.*.sw?
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56
README.md
56
README.md
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@ -1,11 +1,3 @@
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# SEM6000 Python Library
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SEM6000 is a energy meter and power switch with Bluetooth 4.0.
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This library provides a Python module for these devices
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## Run the example code
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```
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$ git clone … sem6000
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$ cd sem6000
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@ -14,51 +6,3 @@ $ . ./python3_venv/bin/activate
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$ pip3 install -r requirements.txt
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$ python3 example.py
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```
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## Collectd Plugin
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You can find a Plugin for [collectd](https://collectd.org) in the `collectd`
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subdirectory.
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Installation procedure (the target directory may be changed of course):
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```shell
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# mkdir -p /usr/local/lib/collectd/python
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# cp collectd/collectd_sem6000.py /usr/local/lib/collectd/python
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# cp sem6000.py /usr/local/lib/collectd/python
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```
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Add or adjust the configuration for your collectd’s Python plugin as follows:
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```
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<Plugin python>
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ModulePath "/usr/local/share/collectd/python"
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LogTraces true
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Interactive false
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Import "collectd_sem6000"
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<Module collectd_sem6000>
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Address "12:34:56:78:90:ab"
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SocketName "FirstSocket"
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ReadTimeout 30
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SuspendTime 300
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</Module>
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<Module collectd_sem6000>
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Address "ab:cd:ef:13:37:42"
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SocketName "ASecondSocket"
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</Module>
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# ...
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</Plugin>
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```
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`ReadTimeout` and `SuspendTime` control what’s happening when a device is
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unavailable. If no value could be retrieved for `ReadTimeout` seconds, the
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plugin does not retry for `SuspendTime` seconds. After that, normal operation
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is resumed. This procedure ensures that an unreachable device does not block
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other devices (too often) in the current single-threaded architecture.
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If not specified, `ReadTimeout` is 30 seconds and `SuspendTime` is 5 minutes.
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Make sure that everything listed in `requirements.txt` is available to the user
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running collectd.
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@ -1,144 +0,0 @@
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#!/usr/bin/env python3
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# coding: utf-8
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# vim: noet ts=2 sw=2 sts=2
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import os
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import time
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import collectd
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from sem6000 import SEMSocket
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from bluepy.btle import BTLEDisconnectError
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instances = []
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def init_func():
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pass
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def config_func(cfg):
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global instances
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config = {}
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for node in cfg.children:
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key = node.key.lower()
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value = node.values[0]
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if key in ['address', 'socketname']:
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config[key] = value
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if key == 'readtimeout':
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config['readtimeout'] = int(value)
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if key == 'suspendtime':
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config['suspendtime'] = int(value)
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if 'address' not in config.keys():
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collectd.error('sem6000: address must be set')
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return
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if 'socketname' not in config.keys():
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config['socketname'] = config['address'].replace(':', '')
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if 'readtimeout' not in config.keys():
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config['readtimeout'] = 30
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if 'suspendtime' not in config.keys():
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config['suspendtime'] = 300
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instances.append( {
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'config': config,
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'socket': None,
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'suspended': False,
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'lastsuccess': 0,
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'resumetime': 0
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} )
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def read_func():
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global instances
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for inst in instances:
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config = inst['config']
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if inst['suspended']:
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if time.time() < inst['resumetime']:
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continue
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else:
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collectd.info("sem6000: Device {} waking up.".format(config['address']))
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inst['suspended'] = False
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inst['lastsuccess'] = time.time()
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try:
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if inst['socket'] == None:
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collectd.info("sem6000: Connecting to {}...".format(config['address']))
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inst['socket'] = SEMSocket(config['address'])
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collectd.info("sem6000: Connected.")
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inst['socket'].getStatus()
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except (SEMSocket.NotConnectedException, BTLEDisconnectError, BrokenPipeError) as e:
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collectd.warning("sem6000: Exception caught: {}".format(e))
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collectd.warning("sem6000: Restarting on next cycle...")
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if inst['lastsuccess'] < time.time() - config['readtimeout']:
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collectd.error("sem6000: no successful communication with {} for {:.1f} seconds. Suspending device for {:.1f} seconds.".format(
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config['address'], config['readtimeout'], config['suspendtime']))
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inst['suspended'] = True
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inst['resumetime'] = time.time() + config['suspendtime']
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if inst['socket'] != None:
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inst['socket'].disconnect()
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inst['socket'] = None
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socket = inst['socket']
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if socket != None and socket.voltage != 0:
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collectd.debug("Uploading values for {}".format(socket.mac_address))
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inst['lastsuccess'] = time.time()
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val = collectd.Values(plugin = 'sem6000-{}'.format(config['socketname']))
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val.type = 'voltage'
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val.type_instance = 'grid'
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val.values = [ socket.voltage ]
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val.dispatch()
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val.type = 'current'
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val.type_instance = 'load'
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val.values = [ socket.current ]
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val.dispatch()
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val.type = 'power'
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val.type_instance = 'real_power'
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val.values = [ socket.power ]
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val.dispatch()
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val.type = 'gauge'
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val.type_instance = 'power_factor'
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val.values = [ socket.power_factor ]
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val.dispatch()
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val.type = 'gauge'
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val.type_instance = 'load_on'
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val.values = [ socket.powered ]
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val.dispatch()
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val.type = 'frequency'
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val.type_instance = 'grid'
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val.values = [ socket.frequency ]
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val.dispatch()
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def shutdown_func():
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global instances
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for inst in instances:
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if inst['socket'] != None:
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inst['socket'].disconnect()
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instances = []
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collectd.register_config(config_func)
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collectd.register_init(init_func)
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collectd.register_read(read_func)
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collectd.register_shutdown(shutdown_func)
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43
example.py
43
example.py
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@ -1,40 +1,23 @@
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#!/usr/bin/env python3
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import time
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from sem6000 import SEMSocket
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import bluepy
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# auto_reconnect_timeout enabled auto reconnect if sending a command fails. Valid values:
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# None (default): everything that fails throws NotConnectedException's
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# -1: infinite retries
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# integer: seconds before exception is thrown
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socket = None
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socket = SEMSocket('f0:c7:7f:0d:e7:17', auto_reconnect_timeout=None)
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#socket.login("1337")
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#socket.changePassword("1234")
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#socket.login("1234")
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while True:
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time.sleep(1)
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try:
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if socket == None:
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print("Connecting... ", end="")
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socket = SEMSocket('f0:c7:7f:0d:e7:17')
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print("Success!")
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print("You're now connected to: {} (Icon: {})".format(socket.name, socket.icons[0]))
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if socket.login("1234") and socket.authenticated:
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print("Login successful!")
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socket.getSynConfig()
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print()
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print("=== Tariff settings ===")
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print("Default charge:", socket.default_charge)
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print("Night charge:", socket.night_charge)
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print("Night tariff from {} to {}".format(socket.night_charge_start_time.tm_hour, socket.night_charge_end_time.tm_hour))
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print()
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print("=== Other settings ===")
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print("Night mode:", "active" if socket.night_mode else "inactive")
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print("Power protection:", socket.power_protect)
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print()
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socket.getStatus()
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socket.setStatus(True)
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print("=== {} ({}) ===".format(socket.mac_address, "on" if socket.powered else "off"))
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print("\t{}V {}A → {}W@{}Hz (PF: {})".format(socket.voltage, socket.current, socket.power, socket.frequency, socket.power_factor))
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except (SEMSocket.NotConnectedException, bluepy.btle.BTLEDisconnectError, BrokenPipeError):
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print("Restarting...")
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if socket != None:
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socket.disconnect()
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socket = None
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print("\t{}V {}A → {}W@{}Hz".format(socket.voltage, socket.current, socket.power, socket.frequency))
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except SEMSocket.NotConnectedException:
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socket.reconnect(-1) #infinite reconnect attempts
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228
sem6000.py
228
sem6000.py
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@ -1,30 +1,25 @@
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from bluepy import btle
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import time
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import datetime
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import uuid
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class SEMSocket():
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icons = ["plug", "speaker", "flatscreen", "desk lamp", "oven", "kitchen machine", "canning pot", "stanging lamp", "kettle", "mixer", "hanging lamp", "toaster", "washing machine", "fan", "fridge", "iron", "printer", "monitor", "notebook", "workstation", "video recorder", "curling iron", "heater"]
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password = "0000"
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auto_reconnect_timeout = None
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powered = False
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voltage = 0
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current = 0
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power = 0
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power_factor = 0
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total_power = 0
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frequency = 0
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mac_address = ""
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custom_service = None
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authenticated = False
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_icon_idx = None
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_name = None
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_version_char = None
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_read_char = None
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_write_char = None
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_name_char = None
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_notify_char = None
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_btle_device = None
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def __init__(self, mac):
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def __init__(self, mac, auto_reconnect_timeout = None):
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self.mac_address = mac
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self.auto_reconnect_timeout = auto_reconnect_timeout
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self._btle_device = btle.Peripheral(None ,addrType=btle.ADDR_TYPE_PUBLIC,iface=0)
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try:
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self.reconnect()
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@ -37,13 +32,6 @@ class SEMSocket():
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cmd = bytearray([0x04])
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payload = bytearray([0x00, 0x00, 0x00])
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msg = self.BTLEMessage(self, cmd, payload)
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return msg.send()
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def getSynConfig(self):
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#15, 5, 16, 0, 0, 0, 17, -1, -1
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cmd = bytearray([0x10])
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payload = bytearray([0x00, 0x00, 0x00])
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msg = self.BTLEMessage(self, cmd, payload)
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msg.send()
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def setStatus(self, status):
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@ -52,18 +40,7 @@ class SEMSocket():
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cmd = bytearray([0x03])
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payload = bytearray([0x00, status, 0x00, 0x00])
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msg = self.BTLEMessage(self, cmd, payload)
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return msg.send()
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def syncTime(self):
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#15, 12, 1, 0, SECOND, MINUTE, HOUR_OF_DAY, DAY_OF_MONTH, MONTH (+1), int(YEAR/256), YEAR%256, 0, 0, CHKSUM, 255, 255
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now = datetime.datetime.now()
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cmd = bytearray([0x01])
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payload = bytearray([0x00])
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payload += bytearray([now.second, now.minute, now.hour])
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payload += bytearray([now.day, now.month, int(now.year/256), now.year%256])
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payload += bytearray([0x00, 0x00])
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msg = self.BTLEMessage(self, cmd, payload)
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||||
return msg.send()
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msg.send()
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||||
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def login(self, password):
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self.password = password
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|
@ -78,9 +55,7 @@ class SEMSocket():
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payload.append(0x00)
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payload.append(0x00)
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msg = self.BTLEMessage(self, cmd, payload)
|
||||
success = msg.send()
|
||||
self.authenticated = self.authenticated and success
|
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return success
|
||||
msg.send()
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||||
|
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def changePassword(self, newPassword):
|
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cmd = bytearray([0x17])
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||||
|
|
@ -88,87 +63,35 @@ class SEMSocket():
|
|||
payload.append(0x00)
|
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payload.append(0x01)
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||||
for i in range(4):
|
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payload.append(int(newPassword[i]))
|
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payload.append(int(self.newPassword[i]))
|
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for i in range(4):
|
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payload.append(int(self.password[i]))
|
||||
self.password = newPassword
|
||||
msg = self.BTLEMessage(self, cmd, payload)
|
||||
success = msg.send()
|
||||
self.authenticated = self.authenticated and success
|
||||
return success
|
||||
|
||||
def setIcon(self, iconIdx):
|
||||
cmd = bytearray([0x0f])
|
||||
payload = bytearray([0x00, 0x03, iconIdx, 0x00, 0x00, 0x00, 0x00])
|
||||
msg = self.BTLEMessage(self, cmd, payload)
|
||||
|
||||
success = msg.send()
|
||||
return success
|
||||
|
||||
def enableLED(self, status):
|
||||
cmd = bytearray([0x0f])
|
||||
payload = bytearray([0x00, 0x05, status, 0x00, 0x00, 0x00, 0x00])
|
||||
msg = self.BTLEMessage(self, cmd, payload)
|
||||
|
||||
success = msg.send()
|
||||
return success
|
||||
|
||||
@property
|
||||
def name(self):
|
||||
self._name = self._name_char.read().decode("UTF-8")
|
||||
return self._name
|
||||
|
||||
@name.setter
|
||||
def name(self, newName):
|
||||
newNameBytes = newName.encode("UTF-8")
|
||||
cmd = bytearray([0x02])
|
||||
payload = bytearray()
|
||||
payload.append(0x02)
|
||||
for i in range(20):
|
||||
if i <= (len(newNameBytes) - 1):
|
||||
payload.append(newNameBytes[i])
|
||||
else:
|
||||
payload.append(0x00)
|
||||
msg = self.BTLEMessage(self, cmd, payload)
|
||||
success = msg.send()
|
||||
# For some reason the original app sets the first 7 bytes of the payload to zero and sends it again.
|
||||
# However, a first test showed, that this really doesn't change anything. If it becomes neccessary here's a first draft:
|
||||
#for i in range(7):
|
||||
# payload[i+1] = 0x00
|
||||
#msg = self.BTLEMessage(self, cmd, payload)
|
||||
if not success:
|
||||
raise self.SendMessageFailed
|
||||
if self.name != newName:
|
||||
raise self.NotLoggedIn
|
||||
|
||||
@property
|
||||
def serial(self):
|
||||
# 15, 5, 17, 0, 0, 0, 18, -1, -1
|
||||
cmd = bytearray([0x11])
|
||||
payload = bytearray([0x00, 0x00, 0x00])
|
||||
msg = self.BTLEMessage(self, cmd, payload)
|
||||
success = msg.send()
|
||||
if not success:
|
||||
raise self.SendMessageFailed
|
||||
return self._serial
|
||||
|
||||
@property
|
||||
def firmware_version(self):
|
||||
char_value = self._version_char.read()
|
||||
major = char_value[11]
|
||||
minor = char_value[12]
|
||||
return "{}.{}".format(major, minor)
|
||||
msg.send()
|
||||
|
||||
@property
|
||||
def connected(self):
|
||||
try:
|
||||
return "conn" in self._btle_device.status().get("state")
|
||||
if "conn" in self._btle_device.status().get("state"):
|
||||
return True
|
||||
else:
|
||||
return False
|
||||
except:
|
||||
return False
|
||||
|
||||
def reconnect(self):
|
||||
def __reconnect(self):
|
||||
self.disconnect()
|
||||
self.connect()
|
||||
|
||||
def reconnect(self, timeout = None):
|
||||
if timeout == None:
|
||||
self.__reconnect()
|
||||
else:
|
||||
reconnect_start = time.time()
|
||||
while abs(reconnect_start - time.time()) < timeout or timeout == -1:
|
||||
self.__reconnect()
|
||||
|
||||
if not self.connected:
|
||||
raise self.NotConnectedException
|
||||
|
||||
|
|
@ -176,30 +99,44 @@ class SEMSocket():
|
|||
self.disconnect()
|
||||
self._btle_device.connect(self.mac_address)
|
||||
self._btle_handler = self.BTLEHandler(self)
|
||||
self._btle_device.setDelegate(self._btle_handler)
|
||||
|
||||
self._custom_service = self._btle_device.getServiceByUUID(0xfff0)
|
||||
self._version_char = self._custom_service.getCharacteristics("0000fff1-0000-1000-8000-00805f9b34fb")[0] #contains firmware version info
|
||||
self._write_char = self._custom_service.getCharacteristics("0000fff3-0000-1000-8000-00805f9b34fb")[0] #is used to write commands
|
||||
self._name_char = self._custom_service.getCharacteristics("0000fff6-0000-1000-8000-00805f9b34fb")[0]
|
||||
self._read_char = self._custom_service.getCharacteristics("0000fff1-0000-1000-8000-00805f9b34fb")[0]
|
||||
self._write_char = self._custom_service.getCharacteristics("0000fff3-0000-1000-8000-00805f9b34fb")[0]
|
||||
self._notify_char = self._custom_service.getCharacteristics("0000fff4-0000-1000-8000-00805f9b34fb")[0]
|
||||
self._btle_device.setDelegate(self._btle_handler)
|
||||
|
||||
def disconnect(self):
|
||||
if self.connected == True:
|
||||
self._btle_device.disconnect()
|
||||
|
||||
#def SynVer(self):
|
||||
# print("SynVer")
|
||||
# self.read_char.read_value()
|
||||
|
||||
#def GetSynConfig(self):
|
||||
# print("GetSynConfig")
|
||||
# #15, 5, 16, 0, 0, 0, 17, -1, -1
|
||||
# self.write_char.write_value(bytearray(b'\x0f\x05\x10\x00\x00\x00\x11\xff\xff'))
|
||||
|
||||
#def ______RESET(self):
|
||||
# #15, 5, 16, 0, 0, 0, 17, -1, -1 ??? maybe reset?
|
||||
# pass
|
||||
|
||||
#def GetSN(self):
|
||||
# print("GetSN")
|
||||
# #15, 5, 17, 0, 0, 0, 18, -1, -1
|
||||
# self.write_char.write_value(bytearray(b'\x0f\x05\x11\x00\x00\x00\x12\xff\xff'))
|
||||
|
||||
# self.SynVer()
|
||||
# self.notify_char.enable_notifications()
|
||||
# self.Login("1337")
|
||||
# self.GetSynConfig()
|
||||
# #self.GetSN()
|
||||
|
||||
class NotConnectedException(Exception):
|
||||
pass
|
||||
|
||||
class SendMessageFailed(Exception):
|
||||
pass
|
||||
|
||||
class NotLoggedIn(Exception):
|
||||
pass
|
||||
|
||||
class BTLEMessage():
|
||||
MAGIC_START = bytearray([0x0f])
|
||||
MAGIC_END = bytearray([0xff, 0xff])
|
||||
|
|
@ -245,10 +182,10 @@ class SEMSocket():
|
|||
|
||||
def send(self):
|
||||
if not self.__btle_device.connected:
|
||||
self.__btle_device.reconnect()
|
||||
self.__btle_device.reconnect(self.__btle_device.auto_reconnect_timeout)
|
||||
|
||||
self.__btle_device._write_char.write(self.__data, True)
|
||||
return self.__btle_device._btle_device.waitForNotifications(5)
|
||||
self.__btle_device._btle_device.waitForNotifications(5)
|
||||
|
||||
|
||||
class BTLEHandler(btle.DefaultDelegate):
|
||||
|
|
@ -257,75 +194,26 @@ class SEMSocket():
|
|||
self.__btle_device = btle_device
|
||||
|
||||
def handleNotification(self, cHandle, data):
|
||||
if len(data) <= 3:
|
||||
print("Notification data seems invalid or incomplete. Could not parse: ", end="")
|
||||
print(data)
|
||||
return
|
||||
|
||||
message_type = data[2]
|
||||
if message_type == 0x00:
|
||||
if data[4] == 0x01:
|
||||
print("Checksum error!")
|
||||
else:
|
||||
print("Unknown error:", data)
|
||||
elif message_type == 0x01: #sync time response
|
||||
if not data[3:] == b'\x00\x00\x02\xff\xff':
|
||||
print("Time synced failed with unknown data: ", end="")
|
||||
print(data)
|
||||
elif message_type == 0x02: #set name response
|
||||
if not data[3:] == b'\x00\x00\x03\xff\xff':
|
||||
print("Set name failed with unknown data: ", end="")
|
||||
print(data)
|
||||
elif message_type == 0x03: #switch toggle response
|
||||
elif message_type == 0x03: #switch toggle
|
||||
print("Switch toggled")
|
||||
self.__btle_device.getStatus()
|
||||
elif message_type == 0x04: #status related response
|
||||
voltage = data[8]
|
||||
current = (data[9] << 8 | data[10]) / 1000
|
||||
power = (data[5] << 16 | data[6] << 8 | data[7]) / 1000
|
||||
total_power = (data[14] << 24 | data[15] << 16 | data[16] << 8 | data[17]) / 1000
|
||||
|
||||
self.__btle_device.voltage = voltage
|
||||
self.__btle_device.current = current
|
||||
self.__btle_device.power = power
|
||||
elif message_type == 0x04: #status related data
|
||||
self.__btle_device.voltage = data[8]
|
||||
self.__btle_device.current = (data[9] << 8 | data[10]) / 1000
|
||||
self.__btle_device.power = (data[5] << 16 | data[6] << 8 | data[7]) / 1000
|
||||
self.__btle_device.frequency = data[11]
|
||||
self.__btle_device.powered = bool(data[4])
|
||||
self.__btle_device.total_power = total_power
|
||||
|
||||
# calculated values
|
||||
try:
|
||||
self.__btle_device.power_factor = power / (voltage * current)
|
||||
except ZeroDivisionError:
|
||||
self.__btle_device.power_factor = None
|
||||
elif message_type == 0x10: #plug settings response
|
||||
self.__btle_device.default_charge = (data[5] / 100)
|
||||
self.__btle_device.night_charge = (data[6] / 100)
|
||||
night_charge_start_time = int((data[7] << 8 | data[8]) / 60)
|
||||
night_charge_end_time = int((data[9] << 8 | data[10]) / 60)
|
||||
self.__btle_device.night_charge_start_time = time.strptime(str(night_charge_start_time), "%H")
|
||||
self.__btle_device.night_charge_end_time = time.strptime(str(night_charge_end_time), "%H")
|
||||
self.__btle_device.night_mode = not bool(data[11])
|
||||
self.__btle_device.icon_idx = data[12]
|
||||
self.__btle_device.power_protect = (data[13] << 8 | data[14])
|
||||
elif message_type == 0x11: #serial number response
|
||||
self.__btle_device._serial = data[-16:].decode("UTF-8")
|
||||
elif message_type == 0x17: #authentication related response
|
||||
elif message_type == 0x17:
|
||||
if data[5] == 0x00 or data[5] == 0x01:
|
||||
# in theory the fifth byte indicates a login attempt response (0) or a response to a password change (1)
|
||||
# but since a password change requires a valid login and a successful password changes logs you in,
|
||||
# we can just ignore this bit and set the authenticated flag accordingly for both responses
|
||||
self.__btle_device.authenticated = not data[4]
|
||||
if data[4]:
|
||||
print("Login failed")
|
||||
else:
|
||||
print("5th byte of login-response is > 1:", data)
|
||||
elif message_type == 0x0f: #set icon response
|
||||
if data[3:6] == b'\x00\x03\x00':
|
||||
# LED set successfully
|
||||
pass
|
||||
elif data[3:6] == b'\x00\x05\x00':
|
||||
# Icon set successfully
|
||||
pass
|
||||
else:
|
||||
print("Unknown response for setting icon: ", end="")
|
||||
print(data[3:])
|
||||
else:
|
||||
print ("Unknown message from Handle: 0x" + format(cHandle,'02X') + " Value: "+ format(data))
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue