mirror of
https://github.com/thingsboard/thingsboard-gateway
synced 2025-10-26 22:31:42 +08:00
317b1b1e03
* Fixed stopping SQLite storage * Changed the way of data reading and writing in SQLite Storage * Changed stopping way for SQLite Storage * Added Modbus Master Connector * Created Modbus Server Connector * Refactored Modbus connector * Added backward compability adapter for modbus connector * Fixed adapter * Added license * Added ASCII Framer support
116 lines
4.7 KiB
Python
116 lines
4.7 KiB
Python
# Copyright 2021. ThingsBoard
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from threading import Thread
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from time import time, sleep
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from pymodbus.constants import Defaults
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from thingsboard_gateway.connectors.modbus.constants import *
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from thingsboard_gateway.connectors.connector import log
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from thingsboard_gateway.connectors.modbus.bytes_modbus_uplink_converter import BytesModbusUplinkConverter
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from thingsboard_gateway.connectors.modbus.bytes_modbus_downlink_converter import BytesModbusDownlinkConverter
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from thingsboard_gateway.tb_utility.tb_loader import TBModuleLoader
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class Slave(Thread):
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def __init__(self, **kwargs):
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super().__init__()
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self.timeout = kwargs.get('timeout')
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self.name = kwargs['deviceName']
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self.poll_period = kwargs['pollPeriod'] / 1000
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self.byte_order = kwargs['byteOrder']
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self.word_order = kwargs.get('wordOrder')
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self.config = {
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'unitId': kwargs['unitId'],
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'deviceType': kwargs.get('deviceType', 'default'),
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'type': kwargs['type'],
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'host': kwargs.get('host'),
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'port': kwargs['port'],
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'timeout': kwargs.get('timeout', 35),
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'stopbits': kwargs.get('stopbits', Defaults.Stopbits),
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'bytesize': kwargs.get('bytesize', Defaults.Bytesize),
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'parity': kwargs.get('parity', Defaults.Parity),
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'strict': kwargs.get('strict', True),
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'retries': kwargs.get('retries', 3),
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'connection_attempt': 0,
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'last_connection_attempt_time': 0,
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'sendDataOnlyOnChange': kwargs.get('sendDataOnlyOnChange', False),
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'waitAfterFailedAttemptsMs': kwargs.get('waitAfterFailedAttemptsMs', 0),
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'connectAttemptTimeMs': kwargs.get('connectAttemptTimeMs', 0),
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'retry_on_empty': kwargs.get('retry_on_empty', True),
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'retry_on_invalid': kwargs.get('retry_on_invalid', True),
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'method': kwargs.get('method', 'rtu'),
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'baudrate': kwargs.get('baudrate', 19200),
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'attributes': kwargs.get('attributes', []),
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'timeseries': kwargs.get('timeseries', []),
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'attributeUpdates': kwargs.get('attributeUpdates', []),
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'rpc': kwargs.get('rpc', []),
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'last_attributes': {},
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'last_telemetry': {}
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}
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self.__load_converters(kwargs['connector'], kwargs['gateway'])
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self.callback = kwargs['callback']
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self.last_polled_time = None
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self.daemon = True
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self.start()
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def timer(self):
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self.callback(self)
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self.last_polled_time = time()
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while True:
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if time() - self.last_polled_time >= self.poll_period:
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self.callback(self)
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self.last_polled_time = time()
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sleep(.2)
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def run(self):
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self.timer()
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def get_name(self):
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return self.name
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def __load_converters(self, connector, gateway):
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try:
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if self.config.get(UPLINK_PREFIX + CONVERTER_PARAMETER) is not None:
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converter = TBModuleLoader.import_module(connector.connector_type,
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self.config[UPLINK_PREFIX + CONVERTER_PARAMETER])(self)
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else:
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converter = BytesModbusUplinkConverter({**self.config, 'deviceName': self.name})
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if self.config.get(DOWNLINK_PREFIX + CONVERTER_PARAMETER) is not None:
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downlink_converter = TBModuleLoader.import_module(connector.connector_type, self.config[
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DOWNLINK_PREFIX + CONVERTER_PARAMETER])(self)
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else:
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downlink_converter = BytesModbusDownlinkConverter(self.config)
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if self.name not in gateway.get_devices():
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gateway.add_device(self.name, {CONNECTOR_PARAMETER: connector},
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device_type=self.config.get(DEVICE_TYPE_PARAMETER))
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self.config[UPLINK_PREFIX + CONVERTER_PARAMETER] = converter
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self.config[DOWNLINK_PREFIX + CONVERTER_PARAMETER] = downlink_converter
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except Exception as e:
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log.exception(e)
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def __str__(self):
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return f'{self.name}'
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