38 lines
1.1 KiB
Python
38 lines
1.1 KiB
Python
# Moisture Sensor Class
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from machine import ADC, Pin
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class MoistureSensor:
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sensor_pin_int = -1
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sensor = None
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most_recent_values = []
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min_raw_value = None
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max_raw_value = None
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def __init__(self, sensor_data, min_raw_value=300, max_raw_value=65535):
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print("Initialize moisture sensor. Sensor pin is: " + str(sensor_data['pin_int']))
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self.sensor_pin_int = sensor_data['pin_int']
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self.min_raw_value = min_raw_value
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self.max_raw_value = max_raw_value
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self.sensor = ADC(Pin(self.sensor_pin_int))
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def read(self):
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self.most_recent_values = [
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{
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'type': 'moisture',
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'value': self.convert_to_moisture_percentage(self.sensor.read_u16()),
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'unit': '%'
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},
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]
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def normalize_sensor_value(self, raw_value):
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return (raw_value - self.min_raw_value) / (self.max_raw_value - self.min_raw_value)
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def convert_to_moisture_percentage(self, raw_value):
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normalized_value = self.normalize_sensor_value(raw_value)
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return round(100 - normalized_value * 100, 1)
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