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from pymodbus.client import ModbusTcpClient, ModbusTlsClient, ModbusSerialClient
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from pymodbus.payload import BinaryPayloadDecoder, BinaryPayloadBuilder
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from pymodbus.constants import Endian
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import paho.mqtt.client as mqtt
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import os
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import time
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import threading
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import pymodbus
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import time
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MQTT_SERVER = os.getenv('MQTT_SERVER', "")
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MQTT_PORT = os.getenv('MQTT_PORT', 1883)
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MQTT_USER = os.getenv('MQTT_USER', "")
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MQTT_PASS = os.getenv('MQTT_PASS', "")
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QUERY_TIME = os.getenv('QUERY_TIME', 60)
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PREFIX = os.getenv('PREFIX', 'home/watercontrol')
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NEPTUN_IP = os.getenv('NEPTUN_IP', '192.168.1.147')
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NEPTUN_ID = os.getenv('NEPTUN_ID', 240)
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COUNTERS_SLOT = int(os.getenv('NEPTUN_WATER_COUNTERS_SLOT', 2))
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###############################################################
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slot_config = {1: [107, 109], 2:[111, 113], 3:[115, 117], 4:[119, 121]}
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def prepare_mqtt():
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print("Connecting to MQTT server", MQTT_SERVER, ":", MQTT_PORT, "with username", MQTT_USER,":",MQTT_PASS)
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client = mqtt.Client()
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if (MQTT_USER != "" and MQTT_PASS != ""):
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client.username_pw_set(MQTT_USER, MQTT_PASS)
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client.connect(MQTT_SERVER, MQTT_PORT, 60)
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return client
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def push_data(client, model, sid, data):
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for key, value in data.items():
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path = PATH_FMT.format(model=model,
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sid=sid,
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prop=key)
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client.publish(path, payload=value, qos=0, retain=True)
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def on_mqtt_message(client, userdata, msg):
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print(msg.topic+" "+str(msg.payload))
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parts = msg.topic.replace(PREFIX, "").strip("/").split("/")
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print(parts)
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if (len(parts) != 2):
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return
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if (parts[0] == 'valves' and parts[1] == 'set'):
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value = msg.payload == b'ON'
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print('value: {}'.format(value))
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modbus = ModbusTcpClient(NEPTUN_IP, port=503, method='rtu')
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response = modbus.read_holding_registers(address=0, count=1, slave=NEPTUN_ID)
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decoder = BinaryPayloadDecoder.fromRegisters(response.registers, byteorder=Endian.Big, wordorder=Endian.Big)
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bits = decoder.decode_bits()
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bits[0] = value
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bits[1] = value
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builder = BinaryPayloadBuilder(wordorder=Endian.Big,byteorder=Endian.Big)
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builder.add_bits(bits)
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registers = builder.to_registers()
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print("new payload: {}".format(registers))
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modbus.write_register(0, registers[0], slave=NEPTUN_ID)
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modbus.close()
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value_str = "OFF"
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if value:
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value_str = "ON"
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client.publish(PREFIX + "/valves", payload=value_str, qos=0, retain=True)
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def on_connect(client, userdata, rc, kwargs):
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client.subscribe(PREFIX + "/valves/set")
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client.subscribe(PREFIX + "/counter3_1/set")
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client.subscribe(PREFIX + "/counter3_2/set")
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config = '{"~": "' + PREFIX + '/valves", "name": "watercontrol_valves", "device_class": "switch", "state_topic": "~", "command_topic":"~/set","unique_id": "watercontrol_neptun_' + NEPTUN_IP + '"}'
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client.publish("homeassistant/switch/watercontrol/valves/config", payload=config, qos=0, retain=True)
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def refresh_loop(client):
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while True:
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try:
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modbus = ModbusTcpClient(NEPTUN_IP, port=503, method='rtu')
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response = modbus.read_holding_registers(address=0, count=1, slave=NEPTUN_ID)
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decoder = BinaryPayloadDecoder.fromRegisters(response.registers, byteorder=Endian.Big, wordorder=Endian.Big)
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bits = decoder.decode_bits()
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valve1 = bits[0]
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valve2 = bits[1]
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print("config_decoded: {}, valve1: {}, valve2: {}".format(bits, valve1, valve2))
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value = "OFF"
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if valve1 and valve2:
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value = "ON"
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client.publish(PREFIX + "/valves", payload=value, qos=0, retain=True)
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reg_config = slot_config[COUNTERS_SLOT]
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reg_cold = reg_config[0]
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reg_hot = reg_config[1]
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response = modbus.read_holding_registers(reg_cold, count=2, slave=NEPTUN_ID)
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decoder = BinaryPayloadDecoder.fromRegisters(response.registers, byteorder=Endian.Big, wordorder=Endian.Big)
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value = decoder.decode_32bit_uint()/1000
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print("counter_cold: {}".format(value))
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client.publish("{}/counter{}_1".format(PREFIX, COUNTERS_SLOT), payload=value, qos=0, retain=True)
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response = modbus.read_holding_registers(reg_hot, count=2, slave=NEPTUN_ID)
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decoder = BinaryPayloadDecoder.fromRegisters(response.registers, byteorder=Endian.Big, wordorder=Endian.Big)
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value = decoder.decode_32bit_uint()/1000
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print("counter_hot: {}".format(value))
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client.publish("{}/counter{}_2".format(PREFIX, COUNTERS_SLOT), payload=value, qos=0, retain=True)
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alert_status_response = modbus.read_holding_registers(address=3, count=1, slave=NEPTUN_ID)
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decoder = BinaryPayloadDecoder.fromRegisters(alert_status_response.registers, byteorder=Endian.Big, wordorder=Endian.Big)
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bits = decoder.decode_bits()
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for i in range(1,5):
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print("alert_{}: {}".format(i, bits[i]))
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client.publish("{}/alert_{}".format(PREFIX, i), payload=bits[i-1], qos=0, retain=True)
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modbus.close()
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except Exception as e:
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print("ERROR", NEPTUN_IP, e)
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time.sleep(QUERY_TIME)
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if __name__ == "__main__":
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client = prepare_mqtt()
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client.on_message = on_mqtt_message
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client.on_connect = on_connect
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#start thread for lamp refresh loop
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t1 = threading.Thread(target=refresh_loop, args=[client])
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t1.start()
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# and process mqtt messages in this thread
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client.loop_forever()
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