Add sensor type to config.ini.

config.ini

@@ -1,2 +1,6 @@
-[DEFAULT]
+[SERVER]
 PORT = 8080
+
+[SENSOR]
+# Set sensor type : Options are DHT11, DHT22 or AM2302
+TYPE = DHT22

pi_temp.py

@@ -51,21 +51,22 @@ import arrow
 import json
 import plotly
 import sqlite3
+import sys
+import Adafruit_DHT
 import ConfigParser
 from plotly.graph_objs import *
 
 config = ConfigParser.ConfigParser()
 config.read("config.ini")
-port = config.getint('DEFAULT', 'PORT') 
+port = config.getint('SERVER', 'PORT') 
+sensor = config.get('SENSOR','TYPE') 
 
 app = Flask(__name__)
 app.debug = True # Make this False if you are no longer debugging
 
 @app.route("/")
 def lab_temp():
-    import sys
-    import Adafruit_DHT
-    humidity, temperature = Adafruit_DHT.read_retry(Adafruit_DHT.AM2302, 17)
+    humidity, temperature = Adafruit_DHT.read_retry(getattr(Adafruit_DHT,sensor), 17) 
     temperature = temperature * 9/5.0 + 32
     if humidity is not None and temperature is not None:
         return render_template("live.html",temp=temperature,hum=humidity)

pi_temp_logger.py

@@ -37,6 +37,11 @@ No text output. Two new records are inserted in the database when the script is
 import sqlite3
 import sys
 import Adafruit_DHT
+import ConfigParser
+
+config = ConfigParser.ConfigParser()
+config.read("config.ini")
+sensor = config.get('SENSOR','TYPE') 
 
 def log_values(sensor_id, temp, hum):
 	conn=sqlite3.connect('/home/pi/Documents/pi-temp/pi_temp.db')  #It is important to provide an
@@ -51,7 +56,7 @@ def log_values(sensor_id, temp, hum):
 	conn.commit()
 	conn.close()
 
-humidity, temperature = Adafruit_DHT.read_retry(Adafruit_DHT.AM2302, 17)
+humidity, temperature = Adafruit_DHT.read_retry(getattr(Adafruit_DHT,sensor), 17)
 temperature = temperature * 9/5.0 + 32
 # If you don't have a sensor but still wish to run this program, comment out all the 
 # sensor related lines, and uncomment the following lines (these will produce random