Push DHT11/DS18B20 sensor data to Loopback API

loopback-dht11-ds18b20.py

#!/usr/bin/python
import os, time, datetime, glob
import sys
import requests
import Adafruit_DHT as DHT

dht_sensor = DHT.DHT11
dht_pin = 4

os.system('modprobe w1-gpio')
os.system('modprobe w1-therm')

device_dir = '/sys/bus/w1/devices/'
device_folder = glob.glob(device_dir + '28*')[0]
device_file = device_folder + '/w1_slave'

api_url = 'http://0.0.0.0:3000/api/'
# Get DHT11 sensor reading
def read_dht():
    humidity, temperature = DHT.read_retry(dht_sensor, dht_pin)
    return temperature, humidity
# Get DS18b20 raw sensor reading
def read_raw_temp():
    f = open(device_file, 'r')
    lines = f.readlines()
    f.close()
    return lines
# Format raw sensor reading to get temperature
def read_ds_temp():
    lines = read_raw_temp()
    while lines[0].strip()[-3:] != 'YES':
        time.sleep(0.5)
        lines = read_raw_temp()
    equals_pos = lines[1].find('t=')
    if equals_pos != -1:
        temp_str = lines[1][equals_pos+2:]
        temp_c = float(temp_str) / 1000.0
        return temp_c   

def cleanup():
   # Do sensor cleanup code
   sys.exit(0)

try:
   while True:
      temp1, humidity = read_dht()
      temp2 = read_ds_temp() 
      timestamp = "{:%Y-%m-%d %H:%M:%S}".format(datetime.datetime.now())
      dht11_payload = {'temperature': temp1, 'humidity': humidity, 'timestamp': timestamp}
      ds18b20_payload = {'temperature': temp2, 'timestamp': timestamp}
      # Do POST requrest to API url
      requests.post(api_url+'DHT11', dht11_payload)
      requests.post(api_url+'DS18B20', ds18b20_payload)
      time.sleep(10)
except KeyboardInterrupt:
      cleanup()
except IOError:
      print("Error")
      cleanup()