42 lines
1.1 KiB
Python
42 lines
1.1 KiB
Python
import time
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class Contour:
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EXPIRE_TIME = 120 # sensor value considered expired in 2 minutes
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CHANGE_FREQ = 600 # change of state allowed after 10 minutes
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current_value = None
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value_time = 0
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state = None
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state_change_time = 0
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target_value = None
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def __init__(self, config, logger):
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self.sensor_topic = config['sensor']
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self.out_topic = config['control']
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self.target_topic = config['target']
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self.logger = logger
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def update(self, value):
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self.current_value = value
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self.value_time = time.time()
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def get_value(self):
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if (time.time() - self.value_time <= self.EXPIRE_TIME):
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return self.current_value
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return None
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def check_state(self, state_value, force = False):
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if self.state == state_value:
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return False
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if (self.state is None) or (time.time() - self.state_change_time > self.CHANGE_FREQ) or force:
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self.state = state_value
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self.state_change_time = time.time()
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self.logger.info("Contour " + self.sensor_topic + " changed state to " + str(self.state))
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return True
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return False
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def update_target(self, target_value):
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self.target_value = target_value
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