From 90a93949675316a597134111805c4a1330abbfc9 Mon Sep 17 00:00:00 2001
From: tatico <tatico@gmail.com>
Date: Sun, 20 Oct 2013 13:21:10 +0200
Subject: [PATCH] added modified version of Adafruit_DHT_googledocs.ex.py to
 log on local file

---
 .../Adafruit_DHT_local-log-file.py            | 45 +++++++++++++++++++
 1 file changed, 45 insertions(+)
 create mode 100755 Adafruit_DHT_Driver/Adafruit_DHT_local-log-file.py

diff --git a/Adafruit_DHT_Driver/Adafruit_DHT_local-log-file.py b/Adafruit_DHT_Driver/Adafruit_DHT_local-log-file.py
new file mode 100755
index 00000000..e523df20
--- /dev/null
+++ b/Adafruit_DHT_Driver/Adafruit_DHT_local-log-file.py
@@ -0,0 +1,45 @@
+#!/usr/bin/python
+
+## This script is based on the examples provided by Adafruit.
+## See README for Copyright information
+
+import subprocess
+import re
+import sys
+import time
+
+
+try:
+# Continuously append data
+  while(True):
+    # Run the DHT program to get the humidity and temperature readings!
+    # open log file to write
+    logfile=open('temp-hum.log','a')
+
+    output = subprocess.check_output(["./Adafruit_DHT", "22", "4"]);
+    print output
+    # search for temperature printout
+    matches = re.search("Temp =\s+([0-9.]+)", output)
+    if (not matches):
+      time.sleep(3)
+      continue
+    temp = float(matches.group(1))
+    
+    # search for humidity printout
+    matches = re.search("Hum =\s+([0-9.]+)", output)
+    if (not matches):
+      time.sleep(3)
+      continue
+    humidity = float(matches.group(1))
+    
+    now = time.time()
+    data =("%s %.1f %.1f\n") % (now,temp,humidity)
+    print(data)
+    logfile.write(data)
+    logfile.close()
+    # Wait half an hour between each measurement
+    time.sleep(1800)
+except KeyboardInterrupt:
+  print("You pressed ctrl-c, quitting")
+  logfile.close()
+  sys.exit(0)