139 lines
4.9 KiB
Python
139 lines
4.9 KiB
Python
"""Driver for tanktransfer"""
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import threading
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import sys
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import json
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import time
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from device_base import deviceBase
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from random import randint
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from utilities import get_public_ip_address
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from file_logger import filelogger as log
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from channel import Channel, read_tag, write_tag
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_ = None
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log.info("tanktransfer startup")
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# GLOBAL VARIABLES
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WAIT_FOR_CONNECTION_SECONDS = 60
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IP_CHECK_PERIOD = 60
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WATCHDOG_ENABLE = True
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WATCHDOG_CHECK_PERIOD = 60
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WATCHDOG_SEND_PERIOD = 3600 # Seconds, the longest amount of time before sending the watchdog status
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PLC_IP_ADDRESS = "192.168.1.10"
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CHANNELS = []
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class start(threading.Thread, deviceBase):
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"""Start class required by Meshify."""
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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 = "2"
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self.finished = threading.Event()
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self.forceSend = False
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self.public_ip_address = ""
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self.public_ip_address_last_checked = 0
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self.watchdog = False
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self.watchdog_last_checked = 0
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self.watchdog_last_sent = 0
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threading.Thread.start(self)
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# this is a required function for all drivers, its goal is to upload some piece of data
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# about your device so it can be seen on the web
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def register(self):
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"""Register the driver."""
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# self.sendtodb("log", "BOOM! Booted.", 0)
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pass
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def run(self):
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"""Actually run the driver."""
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for i in range(0, WAIT_FOR_CONNECTION_SECONDS):
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print("tanktransfer driver will start in {} seconds".format(WAIT_FOR_CONNECTION_SECONDS - i))
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time.sleep(1)
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log.info("BOOM! Starting tanktransfer driver...")
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self._check_watchdog()
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self._check_ip_address()
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self.nodes["tanktransfer_0199"] = self
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send_loops = 0
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while True:
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now = time.time()
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if self.forceSend:
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log.warning("FORCE SEND: TRUE")
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for c in CHANNELS:
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if c.read(self.forceSend):
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self.sendtodbDev(1, c.mesh_name, c.value, 0, 'tanktransfer')
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# print("tanktransfer driver still alive...")
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if self.forceSend:
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if send_loops > 2:
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log.warning("Turning off forceSend")
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self.forceSend = False
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send_loops = 0
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else:
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send_loops += 1
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if WATCHDOG_ENABLE:
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if (now - self.watchdog_last_checked) > WATCHDOG_CHECK_PERIOD:
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self._check_watchdog()
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if (now - self.public_ip_address_last_checked) > IP_CHECK_PERIOD:
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self._check_ip_address()
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def _check_watchdog(self):
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"""Check the watchdog and send to Meshify if changed or stale."""
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test_watchdog = self.tanktransfer_watchdog()
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now = time.time()
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self.watchdog_last_checked = now
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if test_watchdog != self.watchdog or (now - self.watchdog_last_sent) > WATCHDOG_SEND_PERIOD:
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self.sendtodbDev(1, 'watchdog', test_watchdog, 0, 'tanktransfer')
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self.watchdog = test_watchdog
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self.watchdog_last_sent = now
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def _check_ip_address(self):
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"""Check the public IP address and send to Meshify if changed."""
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self.public_ip_address_last_checked = time.time()
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test_public_ip = get_public_ip_address()
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if not test_public_ip == self.public_ip_address:
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self.sendtodbDev(1, 'public_ip_address', test_public_ip, 0, 'tanktransfer')
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self.public_ip_address = test_public_ip
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def tanktransfer_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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def tanktransfer_sync(self, name, value):
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"""Sync all data from the driver."""
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self.forceSend = True
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# self.sendtodb("log", "synced", 0)
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return True
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def tanktransfer_writeplctag(self, name, value):
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"""Write a value to the PLC."""
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new_val = json.loads(str(value).replace("'", '"'))
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tag_n = str(new_val['tag']) # "cmd_Start"
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val_n = new_val['val']
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w = write_tag(str(PLC_IP_ADDRESS), tag_n, val_n)
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print("Result of tanktransfer_writeplctag(self, {}, {}) = {}".format(name, value, w))
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if w is None:
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w = "Error writing to PLC..."
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return w
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