#!/usr/bin/python
import httplib, urllib
import os
import glob
import time
def doit():
def read_B18_Raw():
os.system('modprobe w1-gpio')
os.system('modprobe w1-therm')
Params = urllib.urlencode({'field1': temp_f, 'key':'my key'})
Headers = {"Content-type": "application/x-www-form-urlencoded","Accept": "text/plain"}
conn = httplib.HTTPConnection("api.thingspeak.com:80")
base_dir = '/sys/bus/w1/devices/'
device_folder = glob.glob(base_dir + '28*')[0]
device_file = device_folder + '/w1_slave'
f = open(device_file, 'r')
lines = f.readlines()
f.close()
return lines
def read_B18():
lines = read_B18_Raw()
while lines[0].strip()[-3:] != 'YES':
time.sleep(0.2)
lines = read_B18_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
temp_f = temp_c * 9.0 / 5.0 + 32.0
return "%.1f" % (temp_f)
try:
conn.request("POST", "/update", params, headers)
response = conn.getresponse()
print temp_f
data = response.read()
temp_f = read_temp()
conn.close()
except:
print "connection failed"
#sleep for 16 seconds (api limit of 15 secs)
if __name__ == "__main__":
temp_f = 0
while True:
doit()
time.sleep(16)