weatherStation.py

#!/usr/bin/python


import Adafruit_BMP.BMP085 as BMP085
#import rpi.gpio as io
import sys

import Adafruit_DHT


#io.setmode(io.BCM)
#io.setwarnings(False)


# Default constructor will pick a default I2C bus.
#
# For the Raspberry Pi this means you should hook up to the only exposed I2C bus
# from the main GPIO header and the library will figure out the bus number based
# on the Pi's revision.
#
# For the Beaglebone Black the library will assume bus 1 by default, which is
# exposed with SCL = P9_19 and SDA = P9_20.
sensorB = BMP085.BMP085()

#Define DHT22 sensor.
sensorD = Adafruit_DHT.DHT22

# Example using a Raspberry Pi with DHT sensor
# connected to GPIO23.
pin = 4

# Try to grab a sensor reading.  Use the read_retry method which will retry up
# to 15 times to get a sensor reading (waiting 2 seconds between each retry).
humidity, temperature = Adafruit_DHT.read_retry(sensorD, pin)

# Un-comment the line below to convert the temperature to Fahrenheit.
temperature = temperature * 9/5.0 + 32

# Optionally you can override the bus number:
#sensor = BMP085.BMP085(busnum=2)

# You can also optionally change the BMP085 mode to one of BMP085_ULTRALOWPOWER,
# BMP085_STANDARD, BMP085_HIGHRES, or BMP085_ULTRAHIGHRES.  See the BMP085
# datasheet for more details on the meanings of each mode (accuracy and power
# consumption are primarily the differences).  The default mode is STANDARD.
#sensor = BMP085.BMP085(mode=BMP085.BMP085_ULTRAHIGHRES)

if humidity is not None and temperature is not None:
    print 'Temp={0:0.1f}*  Humidity={1:0.1f}%'.format(temperature, humidity)
else:
    print 'Failed to get reading. Try again!'

print 'Pressure = {0:0.2f} Pa'.format(sensorB.read_pressure())
print 'Altitude = {0:0.2f} m'.format(sensorB.read_altitude())
print 'Sea level Pressure = {0:0.2f} Pa'.format(sensorB.read_sealevel_pressure())


sys.exit(1)


# 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!