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| 1 | #!/usr/bin/python | |
| 2 | import httplib, urllib | |
| 3 | import os | |
| 4 | import glob | |
| 5 | import time | |
| 6 | ||
| 7 | def doit(): | |
| 8 | ||
| 9 | def read_B18_Raw(): | |
| 10 | os.system('modprobe w1-gpio')
| |
| 11 | os.system('modprobe w1-therm')
| |
| 12 | - | Params = urllib.urlencode({'field1': temp_f, 'key':'VC7J0O2WG0V8BYKW'})
|
| 12 | + | Params = urllib.urlencode({'field1': temp_f, 'key':'my key'})
|
| 13 | Headers = {"Content-type": "application/x-www-form-urlencoded","Accept": "text/plain"}
| |
| 14 | conn = httplib.HTTPConnection("api.thingspeak.com:80")
| |
| 15 | ||
| 16 | base_dir = '/sys/bus/w1/devices/' | |
| 17 | device_folder = glob.glob(base_dir + '28*')[0] | |
| 18 | device_file = device_folder + '/w1_slave' | |
| 19 | f = open(device_file, 'r') | |
| 20 | lines = f.readlines() | |
| 21 | f.close() | |
| 22 | return lines | |
| 23 | ||
| 24 | def read_B18(): | |
| 25 | lines = read_B18_Raw() | |
| 26 | while lines[0].strip()[-3:] != 'YES': | |
| 27 | time.sleep(0.2) | |
| 28 | lines = read_B18_Raw() | |
| 29 | equals_pos = lines[1].find('t=')
| |
| 30 | if equals_pos != -1: | |
| 31 | temp_string = lines[1][equals_pos+2:] | |
| 32 | temp_c = float(temp_string) / 1000.0 | |
| 33 | temp_f = temp_c * 9.0 / 5.0 + 32.0 | |
| 34 | return "%.1f" % (temp_f) | |
| 35 | ||
| 36 | try: | |
| 37 | conn.request("POST", "/update", params, headers)
| |
| 38 | response = conn.getresponse() | |
| 39 | print temp_f | |
| 40 | data = response.read() | |
| 41 | temp_f = read_temp() | |
| 42 | conn.close() | |
| 43 | except: | |
| 44 | print "connection failed" | |
| 45 | ||
| 46 | #sleep for 16 seconds (api limit of 15 secs) | |
| 47 | if __name__ == "__main__": | |
| 48 | temp_f = 0 | |
| 49 | while True: | |
| 50 | doit() | |
| 51 | time.sleep(16) |
