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Content import bme680 import light_sensor import power import utime class Sensor: "Sensor is an abstract class for a generic sensor." def __init__(self, name): self.name = name @property def fields(self): "fields should return a list of names of the returned values." pass def read_values(self, **kwargs): """ read_values reads the latest values from the Sensor and returns them as a list, in the same order as returned by fields. """ pass def to_dict(self, **kwargs): "to_dict returns this Sensor as a dictionary." measurements = dict(zip(self.fields, self.read_values(**kwargs))) return {self.name: measurements, "Time": utime.time()} class EnvironmentalSensor(Sensor): "EnvironmentalSensor reads environmental values from the BME680 sensor." def __init__(self): super().__init__("Environmental") @property def fields(self): return ["Temperature (C)", "Humidity (% r.h.)", "Pressure (hPa)", "Gas resistance (Ohm)"] def read_values(self, **kwargs): bme680.init() data = bme680.get_data() bme680.deinit() return list(data) class LightSensor(Sensor): "LightSensor reads the values from the onboard IR-LED." def __init__(self): super().__init__("Light") @property def fields(self): return ["Brightness Value", "Brightness Description"] def read_values(self, **kwargs): light_sensor.start() bright = light_sensor.get_reading() light_sensor.stop() if bright < 7: bright_desc = "Very very dark" elif bright < 15: bright_desc = "Very dark" elif bright < 50: bright_desc = "Hackerspace brightness" elif bright < 100: bright_desc = "Not so dark" else: bright_desc = "Sunlight" return [bright, bright_desc] class PowerSensor(Sensor): "PowerSensor reads the card10's power status." def __init__(self): super().__init__("Power") @property def fields(self): return ["Battery Voltage (V)", "Battery Current (A)", "Charge Voltage (V)", "Charge Current (A)"] def read_values(self, **kwargs): return [power.read_battery_voltage(), power.read_battery_current(), power.read_chargein_voltage(), power.read_chargein_current()] sensors = [EnvironmentalSensor(), LightSensor(), PowerSensor()]