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53 lines
1.7 KiB
53 lines
1.7 KiB
import machine
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class CSMS12:
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AirValue = 849 # Totally dry in air
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WaterValue = 374 # Totally wet in water
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Interval = 0
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SoilMoistureValue = 0
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def __init__(self, pin = 0):
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# Set up port for reading values
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self.Adc = machine.ADC(pin)
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# Calculate range of intervals for Wet/Okay Wet/Dry
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# This is based on the ranges of wet and dry values that I found by
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# having the sensor in water and by having it in dry air.
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self.Interval = (self.AirValue - self.WaterValue) / 3
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# Just a wrapper to read the value
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def getRawValue(self):
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return self.Adc.read()
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# Do the varying scale of the moisture for Capacinance readers
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def getScaledValue(self):
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scaledValue = 0
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rawValue = self.getRawValue()
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# Calculate percentage within the calibrated range
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scaledValue = (
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((self.WaterValue - rawValue) * 100) / (self.WaterValue - self.AirValue)
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)
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# Make sure that we don't go out of range
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if scaledValue < 0:
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scaledValue = 0
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if scaledValue > 100:
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scaledValue = 100
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# Convert so 0% is completely dry and 100% is completely wet.
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return 100 - scaledValue
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# Get current interval of how wet the sensor is
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def getInterval(self):
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value = self.getScaledValue()
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if 75 <= value <= 100:
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return("Very Moist (Value: {}%)".format(value))
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elif 50 <= value <= 75:
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return("Quite Moist (Value: {}%)".format(value))
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elif 25 <= value <= 50:
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return("Kinda Dry (Value: {}%)".format(value))
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elif 0 <= value <= 25:
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return("Very Dry (Value: {}%)".format(value))
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