Added updating to Domoticz

Wen configured in ini file program now updates virtual BWR102 scale
sensor to enable graphing. Emailing of weight data is now optional by
config in ini.

BS440.ini

@@ -5,24 +5,39 @@
 
 # The persons secion lists all the scale users
 # The list maybe extended to 8 persons
+# Domoticz index is only used if domoticz IP is set
 [Person1]
 username: John
 useremail: [email protected]
+domoticz_idx: 55
 
 [Person2]
 username: Jill
 useremail: [email protected]
+domoticz_idx: 56
 
 # Scale properties
 [Scale]
 ble_address: aa:bb:cc:11:22:33
 device_name: 0202B6332211CCBBAA
 
 # Program behaviour
-# Sender email/pwd: gmail account info
 # Loglevel: debug | info | critical | error
 [Program]
-sender_email: [email protected]
-sender_pwd: yourpassword
 loglevel: debug
 logfile: BS440.log
+
+# Sender email/pwd: gmail account info
+# Uncomment [Email] to have emails sent
+[Email]
+sender_email: [email protected]
+sender_pwd: yourpassword
+
+# Uncomment [Domoticz] to enable updating
+# DomoticzIP: IP adres of Domoticz server
+# DomoticzUser: Username of Domoticz server
+# DomoticzPwd: Password of Domoticz server
+#[Domoticz]
+#domoticz_url: 192.168.0.10:8080
+#domoticz_user: admin
+#domoticz_pwd: admin

BS440.py

@@ -8,6 +8,7 @@
 from binascii import hexlify
 from BS440decode import *
 from BS440mail import *
+from BS440domoticz import *
 
 
 def processIndication(handle, values):
@@ -146,8 +147,11 @@ def init_ble_mode():
                 time.sleep(30)
                 device.disconnect()
                 log.info('Done receiving data from scale')
-                # mail data if all received well
+                # process data if all received well
                 if persondata and weightdata and bodydata:
-                    BS440mail(config, persondata, weightdata, bodydata)
+                    if config.has_section('Email'):
+                        BS440mail(config, persondata, weightdata, bodydata)
+                    if config.has_section('Domoticz'):
+                        UpdateDomoticz(config, weightdata)
                 else:
-                    log.error('Incomplete data received. Unable to send mail')
+                    log.error('Unreliable data received. Unable to process')

BS440domoticz.py

@@ -0,0 +1,38 @@
+'''
+BS440domoticz.py
+Update weight value to Domoticz home automation system
+'''
+import urllib2
+import base64
+import logging
+
+
+def UpdateDomoticz(config, weightdata):
+    log = logging.getLogger(__name__)
+    # sort to have list starting with most recent weight
+    wds = sorted(weightdata, key=lambda k: k['timestamp'], reverse=True)
+    domoticzurl = config.get('Domoticz', 'domoticz_url')
+    domoticzuser = config.get('Domoticz', 'domoticz_user')
+    domoticzpwd = config.get('Domoticz', 'domoticz_pwd')
+    personsection = 'Person' + str(wds[0]['person'])
+    if config.has_section(personsection):
+        domoticzidx = config.get(personsection, 'domoticz_idx')
+        scaleuser = config.get(personsection, 'username')
+    else:
+        log.error('Unable to update Domoticz: No details found in ini file '
+                  'for person %d' % (wds[0]['person']))
+        return
+    try:
+        log.info('Updating Domoticz for user %s at index %s with weight %s' % (
+                  scaleuser, domoticzidx, wds[0]['weight']))
+        url = 'http://%s/json.htm?type=command&param=udevice&hid=2&' \
+              'did=%s&dunit=4&dtype=93&dsubtype=1&nvalue=0&svalue=%s' % (
+               domoticzurl, domoticzidx, wds[0]['weight'])
+        req = urllib2.Request(url)
+        base64string = base64.encodestring('%s:%s' % (
+                       domoticzuser, domoticzpwd)).replace('\n', '')
+        req.add_header('Authorization', 'Basic %s' % base64string)
+        resp = urllib2.urlopen(req)
+        log.info('Domoticz succesfully updated')
+    except:
+        log.error('Unable to update Domoticz: Error sending data.')

BS440mail.py

@@ -53,9 +53,9 @@ def rowdata(header, dataset, property, bib):
 
 def BS440mail(config, persondata, weightdata, bodydata):
     log = logging.getLogger(__name__)
-    FromAddr = config.get('Program', 'sender_email')
-    Password = config.get('Program', 'sender_pwd')
-    CcAddr = [config.get('Program', 'sender_email')]
+    FromAddr = config.get('Email', 'sender_email')
+    Password = config.get('Email', 'sender_pwd')
+    CcAddr = [config.get('Email', 'sender_email')]
 
     personsection = 'Person' + str(persondata[0]['person'])
     if config.has_section(personsection):

README.md

@@ -14,8 +14,10 @@ https://keptenkurk.wordpress.com/2016/02/07/connecting-the-medisana-bs440-blueto
 
 # Description
 In it's current state this program listens for data from a BS440 
-bluetooth scale. Once connected, data is read from the scale and
-the last 3 stored sets of data will be mailed to the user.
+bluetooth scale. Once connected, data is read from the scale. Depending
+on the config in ini the program will
+* mail the last 3 stored sets of data to the user
+* update a virtual sensor in Domoticz home automation system
 
 # ini file
 Before using this program change the settings in the ini file