miThermoHygro.py

#!/usr/bin/env python2
import binascii
import base64
import requests
from bluepy.btle import UUID, Peripheral, ADDR_TYPE_PUBLIC, DefaultDelegate

# domoticz configuration
DOMOTICZ_SERVER   = "127.0.0.1:8080"
DOMOTICZ_USERNAME = "user"
DOMOTICZ_PASSWORD = "password"

# sensor dictionary to add own sensors
# key is MAC of BT sensor, value is sensor ID
sensor_dict = {}
sensor_dict["4C:65:A8:D0:XX:XX"] = 1
sensor_dict["4C:65:A8:D0:XX:XX"] = 2

# constants for polling sensor; do not change!
BATTERY_HANDLE = 0x0018
TEMP_HUM_WRITE_HANDLE = 0x0010
TEMP_HUM_READ_HANDLE = 0x000E
TEMP_HUM_WRITE_VALUE = bytearray([0x01, 0x10])

battery_level = -1
sensor_id = -1

class TempHumDelegate(DefaultDelegate):
	def __init__(self):
		DefaultDelegate.__init__(self)

	def handleNotification(self, cHandle, data):
		if (cHandle == TEMP_HUM_READ_HANDLE):
			data = data.rstrip(' \t\r\n\0')
			temperature = data.split(" ")[0][2:]
			humidity = data.split(" ")[1][2:]
			comfort_type = get_comfort_type(humidity)
			if (sensor_id != -1 and battery_level > -1):
				request_url = 'http://' + DOMOTICZ_SERVER + '/json.htm?type=command&param=udevice&idx=' + str(sensor_id) + '&nvalue=0&svalue=' + temperature + ';' + humidity + ';' + comfort_type + '&battery=' + str(battery_level)
				send_to_domoticz(request_url)

def send_to_domoticz(url):
	requests.get(url, auth=(DOMOTICZ_USERNAME, DOMOTICZ_PASSWORD))

def get_comfort_type(humidity):
	comfort_type = "0"
	if float(humidity) < 40:
		comfort_type = "2"
	elif float(humidity) <= 70:
		comfort_type = "1"
	elif float(humidity) > 70:
		comfort_type = "3"
	return comfort_type

def get_battery_value():
	battery_value = 0;
	try:
		battery_value = p.readCharacteristic(BATTERY_HANDLE)
	finally:
		return int(binascii.b2a_hex(battery_value), 16)

def handle_temp_hum_value():
	p.writeCharacteristic(TEMP_HUM_WRITE_HANDLE, TEMP_HUM_WRITE_VALUE)
	while True:
		if p.waitForNotifications(1.0):
			break

for key, value in sensor_dict.iteritems():
	try:
		sensor_id = value
		p = Peripheral(key)
		p.withDelegate(TempHumDelegate())
		battery_level = get_battery_value()
		handle_temp_hum_value()
		p.disconnect()
	except:
		pass