def read(self):
from sds011 import SDS011
pm25_values = []
pm10_values = []
self.sensor.workstate = SDS011.WorkStates.Measuring
try:
for a in range(8):
values = self.sensor.get_values()
if values is not None:
pm10_values.append(values[0])
pm25_values.append(values[1])
finally:
self.sensor.workstate = SDS011.WorkStates.Sleeping
pm25_value = mean(pm25_values)
pm10_value = mean(pm10_values)
data = [
Reading(device='SDS011',
type='particles-pm25',
unit='unknown',
address=self.address,
value=pm25_value),
Reading(device='SDS011',
type='particles-pm10',
unit='unknown',
address=self.address,
value=pm10_value),
]
return data
def read(self):
pressure, temperature = self.sensor.all()
address = '{}/{}'.format(self.bus, self.address)
data = [
Reading(device='BMP180',
type='temperature',
unit='celsius',
address=address,
value=temperature.C),
Reading(device='BMP180',
type='pressure',
unit='hPa',
address=address,
value=temperature.hPa),
]
return data
def read(self):
temperature = 42.42
humidity = 84.84
data = [
Reading(device='Dummy',
type='temperature',
unit='celsius',
address=self.address,
value=temperature),
Reading(device='Dummy',
type='humidity',
unit='%',
address=self.address,
value=humidity),
]
return data
def read(self):
value = self.sensorreader.read()
data = [
Reading(device='ABE-DeltaSigma-ADC',
type='weight',
unit='kg',
address=self.address,
value=value),
]
return data
def read(self):
temperature_value = self.sensor.temperature
if temperature_value == 85:
raise BadReading('DS18B20 power-on value 85')
data = [
Reading(device='DS18B20',
type='temperature',
unit='celsius',
address=self.address,
value=temperature_value),
]
return data
def read(self):
temperature = self.sensor.read_temperature()
humidity = self.sensor.read_humidity()
pressure = self.sensor.read_pressure() / 100
data = [
Reading(device='BME280',
type='temperature',
unit='celsius',
address=self.address,
value=temperature),
Reading(device='BME280',
type='humidity',
unit='%',
address=self.address,
value=humidity),
Reading(device='BME280',
type='pressure',
unit='hPa',
address=self.address,
value=pressure),
]
return data
def read(self):
"""
Note that sometimes you won't get a reading and
the results will be null (because Linux can't
guarantee the timing of calls to read the sensor).
If this happens try again!
"""
# Adafruit_DHT.DHT11, 17
import Adafruit_DHT
humidity, temperature = Adafruit_DHT.read(Adafruit_DHT.DHT11,
self.address)
data = [
Reading(device='DHT11',
type='temperature',
unit='celsius',
address=self.address,
value=temperature),
Reading(device='DHT11',
type='humidity',
unit='%',
address=self.address,
value=humidity),
]
return data
def read(self):
import RPi.GPIO as GPIO
values = []
try:
# Before reading, reset the HX711 (not obligate).
# FIXME: Really?
self.sensor.reset()
values = self.sensor.get_raw_data(num_measures=3)
finally:
# FIXME: Really?
GPIO.cleanup() # always do a GPIO cleanup in your scripts!
value = mean(values)
data = [
Reading(device='HX711',
type='weight',
unit='kg',
address=self.address,
value=value),
]
return data