57 lines
2.2 KiB
Python
57 lines
2.2 KiB
Python
"""Max Water System driver code."""
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import threading
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import time
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from random import randint
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from Channel import write_tag, read_tag
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from device_base import deviceBase
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PLC_IP_ADDRESS = "192.168.1.10"
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WATCHDOG_SEND_PERIOD = 3600 # seconds
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class start(threading.Thread, deviceBase):
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"""Driver class."""
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def __init__(self, name=None, number=None, mac=None, Q=None, mcu=None, companyId=None, offset=None, mqtt=None, Nodes=None):
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"""Initialize the driver."""
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threading.Thread.__init__(self)
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deviceBase.__init__(self, name=name, number=number, mac=mac, Q=Q, mcu=mcu, companyId=companyId, offset=offset, mqtt=mqtt, Nodes=Nodes)
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self.daemon = True
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self.version = "7"
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self.finished = threading.Event()
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threading.Thread.start(self)
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def register(self):
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"""Required function for all drivers, its goal is to upload some piece of data about your device so it can be seen on the web."""
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self.channels["status"]["last_value"] = ""
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def run(self):
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"""Run the driver."""
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watchdog = self.advvfdipp_watchdog()
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self.sendtodbDev(1, 'watchdog', watchdog, 0)
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watchdog_send_timestamp = time.time()
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watchdog_loops = 0
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watchdog_check_after = 5000
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while True:
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watchdog_loops += 1
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if (watchdog_loops >= watchdog_check_after):
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test_watchdog = self.advvfdipp_watchdog()
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if test_watchdog != watchdog or (time.time() - watchdog_send_timestamp) > WATCHDOG_SEND_PERIOD:
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self.sendtodbDev(1, 'watchdog', test_watchdog, 0, 'advvfdipp')
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watchdog_send_timestamp = time.time()
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watchdog = test_watchdog
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watchdog_loops = 0
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def advvfdipp_watchdog(self):
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"""Write a random integer to the PLC and then 1 seconds later check that it has been decremented by 1."""
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randval = randint(0, 32767)
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write_tag(str(PLC_IP_ADDRESS), 'watchdog_INT', randval)
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time.sleep(1)
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watchdog_val = read_tag(str(PLC_IP_ADDRESS), 'watchdog_INT')
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try:
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return (randval - 1) == watchdog_val[0]
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except (KeyError, TypeError):
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return False
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