82 lines
2.7 KiB
Python
82 lines
2.7 KiB
Python
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import datetime
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import logging
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from threading import Thread
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import time
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from w1thermsensor import W1ThermSensor
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import heat
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class Control(Thread):
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def __init__(self, heat_pin: int):
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super(Control, self).__init__()
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self.__run_condition = True
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self.__runtime = datetime.timedelta(hours=2)
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self.__on_time = None
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self.__off_time = datetime.datetime.now() + self.__runtime
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self.__heat = heat.Heat(heat_pin)
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self.__state = False
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self.__target_temperature = 80.0
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self.__span_temperature = 1.5
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self.__sensor = W1ThermSensor()
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self.__log = logging.getLogger()
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def run(self):
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while self.__run_condition:
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if self.__state:
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# check for elapsed runtime
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now = datetime.datetime.now()
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if now > self.__off_time:
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self.__state = False
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self.__log.info("switch off after %s", self.__runtime)
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continue
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# check for regulating
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temperature = float(self.__sensor.get_temperature())
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if self.__heat.state() and temperature > (self.__target_temperature + self.__span_temperature):
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self.__heat.off()
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self.__log.info("switch heat off for regulating")
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self.__log.info("current temperature: %s", temperature)
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else:
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if not self.__heat.state() and temperature < (self.__target_temperature - self.__span_temperature):
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self.__heat.on()
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self.__log.info("switch heat on for regulating")
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self.__log.info("current temperature: %s", temperature)
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else:
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if self.__heat.state():
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self.__heat.off()
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time.sleep(0.8)
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def stop(self):
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self.__run_condition = False
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self.join()
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def set_runtime(self, runtime):
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dtime = datetime.datetime.strptime(runtime, "%H:%M")
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self.__runtime = datetime.timedelta(hours=dtime.hour, minutes=dtime.minute)
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def get_runtime(self):
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return self.__runtime
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def set_target_temperature(self, target_temperature):
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self.__target_temperature = float(target_temperature)
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def get_target_temperature(self):
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return self.__target_temperature
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def switch_on(self):
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self.__on_time = datetime.datetime.now()
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self.__off_time = self.__on_time + self.__runtime
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self.__state = True
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def switch_off(self):
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self.__state = False
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def state(self):
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return self.__state
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def time_to_switch_off(self):
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if self.__state:
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return self.__off_time - datetime.datetime.now()
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return None
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