# -*- coding: utf-8 -*- #!/usr/bin/python2.7 ''' Title: ThingSpeak / RaspberryPi Weather station Author: AndyPi Hardware: DHT22 (temp / humidity) BMP085 (temp/atmospheric pressure) Shinyei PPD42NS Dust Sensor (air quality) ''' from __future__ import print_function import sys import httplib import urllib import time from collections import deque import pickle import DHT22 import pigpio import Adafruit_BMP.BMP085 import air_quality from config import * BMP085sensor = Adafruit_BMP.BMP085.BMP085() # Setup RPi GPIO pins PIN_DHT22 = 8 PIN_PPD42NS = 7 #PIN_DHT22i = 7
def main(args):
# temp_high = 42.0
# temp_low = 38.0
status = 'unknown'
GPIO.setmode(GPIO.BCM)
GPIO.setup(23, GPIO.OUT)
##-------------------------------------------------------------------------
## Create logger object
##-------------------------------------------------------------------------
logger = logging.getLogger('MyLogger')
logger.setLevel(logging.DEBUG)
## Set up console output
LogConsoleHandler = logging.StreamHandler()
if args.verbose:
LogConsoleHandler.setLevel(logging.DEBUG)
else:
LogConsoleHandler.setLevel(logging.INFO)
LogFormat = logging.Formatter('%(asctime)23s %(levelname)8s: %(message)s')
LogConsoleHandler.setFormatter(LogFormat)
logger.addHandler(LogConsoleHandler)
## Set up file output
now = datetime.datetime.now()
DateString = '{}'.format(now.strftime('%Y%m%d'))
TimeString = '{} HST'.format(now.strftime('%H:%M:%S'))
LogFileName = os.path.join('/', 'var', 'log', 'Kegerator',
'Log_{}.txt'.format(DateString))
LogFileHandler = logging.FileHandler(LogFileName)
LogFileHandler.setLevel(logging.DEBUG)
LogFileHandler.setFormatter(LogFormat)
logger.addHandler(LogFileHandler)
##-------------------------------------------------------------------------
## Get Temperature and Humidity Values
##-------------------------------------------------------------------------
logger.info('#### Reading Temperature and Humidity Sensors ####')
temperatures_F = []
try:
logger.debug('Reading DHT22')
DHT = DHT22.DHT22(pin=18)
DHT.read()
logger.debug(' Temperature = {:.3f} F, Humidity = {:.1f} %'.format(
DHT.temperature_F, DHT.humidity))
temperatures_F.append(DHT.temperature_F)
RH = DHT.humidity
AH = humidity.relative_to_absolute_humidity(DHT.temperature_C,
DHT.humidity)
logger.debug(' Absolute Humidity = {:.2f} g/m^3'.format(AH))
except:
RH = float('nan')
AH = float('nan')
logger.debug('Reading DS18B20')
sensor = DS18B20.DS18B20()
sensor.read()
for temp in sensor.temperatures_C:
logger.debug(' Temperature = {:.3f} F'.format(temp * 9. / 5. + 32.))
temperatures_F.append(temp * 9. / 5. + 32.)
##-------------------------------------------------------------------------
## Record Values to Table
##-------------------------------------------------------------------------
datafile = os.path.join('/', 'var', 'log', 'Kegerator',
'{}.txt'.format(DateString))
logger.debug(
"Preparing astropy table object for data file {}".format(datafile))
if not os.path.exists(datafile):
logger.info("Making new astropy table object")
SummaryTable = table.Table(names=('date', 'time', 'AmbTemp', 'KegTemp', 'KegTemp1', 'KegTemp2', 'KegTemp3', 'RH', 'AH', 'status'), \
dtype=('S10', 'S12', 'f4', 'f4', 'f4', 'f4', 'f4', 'f4', 'f4', 'S8') )
else:
logger.debug(
"Reading astropy table object from file: {0}".format(datafile))
try:
SummaryTable = ascii.read(
datafile,
guess=False,
header_start=0,
data_start=1,
Reader=ascii.basic.Basic,
converters={
'date': [ascii.convert_numpy('S10')],
'time': [ascii.convert_numpy('S12')],
'AmbTemp': [ascii.convert_numpy('f4')],
'KegTemp': [ascii.convert_numpy('f4')],
'KegTemp1': [ascii.convert_numpy('f4')],
'KegTemp2': [ascii.convert_numpy('f4')],
'KegTemp3': [ascii.convert_numpy('f4')],
'hum': [ascii.convert_numpy('f4')],
'AH': [ascii.convert_numpy('f4')],
'status': [ascii.convert_numpy('S11')],
})
except:
logger.critical("Failed to read data file: {0} {1} {2}".format(
sys.exc_info()[0],
sys.exc_info()[1],
sys.exc_info()[2]))
##-------------------------------------------------------------------------
## Turn Kegerator Relay On or Off Based on Temperature
##-------------------------------------------------------------------------
temperatures_F.sort()
ambient_temperature = temperatures_F.pop()
assert ambient_temperature > max(temperatures_F)
logger.info('Ambient Temperature = {:.1f}'.format(ambient_temperature))
for temp in temperatures_F:
logger.info('Kegerator Temperatures = {:.1f} F'.format(temp))
temperature = np.median(temperatures_F)
logger.info('Median Temperature = {:.1f} F'.format(temperature))
if temperature > temp_high:
status = 'On'
logger.info(
'Temperature {:.1f} is greater than {:.1f}. Turning freezer {}.'.
format(temperature, temp_high, status))
GPIO.output(23, True)
elif temperature < temp_low:
status = 'Off'
logger.info(
'Temperature {:.1f} is less than {:.1f}. Turning freezer {}.'.
format(temperature, temp_low, status))
GPIO.output(23, False)
else:
if len(SummaryTable) > 0:
status = SummaryTable['status'][-1]
else:
status = 'unknown'
logger.info(
'Temperature if {:.1f}. Taking no action. Status is {}'.format(
temperature, status))
##-------------------------------------------------------------------------
## Add row to data table
##-------------------------------------------------------------------------
logger.debug("Writing new row to data table.")
while len(temperatures_F) < 4:
temperatures_F.append(float('nan'))
SummaryTable.add_row((DateString, TimeString, ambient_temperature, temperature, \
temperatures_F[0], temperatures_F[1], temperatures_F[2], \
RH, AH, status))
## Write Table to File
logger.debug(" Writing new data file.")
ascii.write(SummaryTable, datafile, Writer=ascii.basic.Basic)
##-------------------------------------------------------------------------
## Log to Carriots
##-------------------------------------------------------------------------
logger.info('Sending Data to Carriots')
logger.debug(' Creating Device object')
Device = Carriots.Client(device_id="kegerator@joshwalawender")
logger.debug(' Reading api key')
Device.read_api_key_from_file(
file=os.path.join(os.path.expanduser('~joshw'), '.carriots_api'))
data_dict = {'Temperature': temperature, \
'Status': status
}
logger.debug(' Data: {}'.format(data_dict))
Device.upload(data_dict)
logger.info('Done')
#! usr/bin/python
import DHT22
pin = 16
dht22 = DHT22.DHT22(pin)
humidity, temperature = dht22.get_temperature_and_humidity()
print(humidity, temperature)
#import Adafruit_DHT
'''
class DHT22():
self.__init__(self,_pin):
self._pin = _pin
self._sensor = Adafruit_DHT.DHT22
self.get_temperature_and_humidity(self):
return Adafruit_DHT.read_retry(sensor, pin)
self.get_temperature():
return self.get_temperature_and_humidity()[1]
self.get_humidity():
return self.get_temperature_and_humidity()[0]
'''
'''
# Sensor should be set to Adafruit_DHT.DHT11,