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Added  DS18B20 1-wire temperature sensor support

extras/GetHumidity.py

@@ -31,6 +31,9 @@ sensor_args = { '11': Adafruit_DHT.DHT11,
 if len(sys.argv) == 3 and sys.argv[1] in sensor_args:
 	sensor = sensor_args[sys.argv[1]]
 	pin = sys.argv[2]
+elif len(sys.argv) == 2 and sys.argv[1] == '1820'
+	print 'Failed'
+	sys.exit(1)
 else:
 	sys.exit(1)
 

extras/GetTemperature.py

@@ -22,22 +22,59 @@
 # SOFTWARE.
 import sys
 import Adafruit_DHT
+import os
+import glob
+import time
 
 
 # Parse command line parameters.
 sensor_args = { '11': Adafruit_DHT.DHT11,
 				'22': Adafruit_DHT.DHT22,
 				'2302': Adafruit_DHT.AM2302 }
+
 if len(sys.argv) == 3 and sys.argv[1] in sensor_args:
 	sensor = sensor_args[sys.argv[1]]
 	pin = sys.argv[2]
+	isDHTSensor  = True
+elif len(sys.argv) == 2 and sys.argv[1] == '1820'
+	os.system('modprobe w1-gpio')
+	os.system('modprobe w1-therm')
+	base_dir = '/sys/bus/w1/devices/'
+	device_folder = glob.glob(base_dir + '28*')[0]
+	device_file = device_folder + '/w1_slave'
+	isDHTSensor = False
 else:
 	sys.exit(1)
 
-humidity, temperature = Adafruit_DHT.read_retry(sensor, pin)
+def read_temp_raw():
+	f = open(device_file, 'r')
+	lines = f.readlines()
+	f.close()
+	return lines
+ 
+def read_temp():
+	lines = read_temp_raw()
+	while lines[0].strip()[-3:] != 'YES':
+		time.sleep(0.2)
+		lines = read_temp_raw()
+	equals_pos = lines[1].find('t=')
+	if equals_pos != -1:
+		temp_string = lines[1][equals_pos+2:]
+		temp_c = float(temp_string) / 1000.0
+		return temp_c
 
-if temperature is not None:
+def read_dht_temp():
+	hum, temp = Adafruit_DHT.read_retry(sensor, pin)
+	return temp
+
+if isDHTSensor = True:
+	temperature = read_dht_temp()
+	if temperature is not None:
+		print '{0:0.1f}'.format(temperature)
+	else:
+		print 'Failed'
+		sys.exit(1)
+else
+	temperature = read_temp()
 	print '{0:0.1f}'.format(temperature)
-else:
-	print 'Failed'
 	sys.exit(1)