Update README and document new config options

Author: gfwilliams

README.md

@@ -387,6 +387,16 @@ sudo hciconfig hci0 up
 See https://github.com/sandeepmistry/bleno
 
 
+Home Assistant Integration
+--------------------------
+
+Follow the instructions at https://www.home-assistant.io/integrations/mqtt/ to enable Home Assistant to use an external MQTT broker. Assuming you're running on the same device as EspruinoHub, use `localhost` as the IP address for the MQTT server.
+
+Ensure that `homeassistant` is set to `true` in EspruinoHub's `config.json`. It's currently the default.
+
+Now, in the Home Assistant main page you should see new Sensors and Binary sensors which match any devices that EspruinoHub has found!
+
+
 Troubleshooting
 ---------------
 

config.json

@@ -54,13 +54,23 @@
     "password": "pass",
     "clientId": "clientid"
   },
+
   "// Define the topic prefix under which the MQTT data will be posted. Defaults to /ble which is not adviced. For new installation, please activate the option below.":0,
   "//mqtt_prefix": "ble",
-  "mqtt_advertise": true,
-  "mqtt_advertise_manufacturer_data": true,
-  "mqtt_advertise_service_data": true,
+
+  "// These are the types of MQTT topics that are created":0,
+  
+  "// Send /ble/advertise/ad:dr:es:ss JSON with raw advertising data, as well as /ble/advertise/ad:dr:es:ss/rssi":0,
+  "mqtt_advertise": false,
+  "// Send /ble/advertise/ad:dr:es:ss/manufacturer/uuid raw manufacturer data as well as decoded /ble/advertise/ad:dr:es:ss/json_key for json-formatted 0x0590 advertising data":0,
+  "mqtt_advertise_manufacturer_data": false,
+  "// Send /ble/advertise/ad:dr:es:ss/uuid raw service data":0,
+  "mqtt_advertise_service_data": false,
+  "// Send /ble/json/ad:dr:es:ss/uuid for decoded service data - REQUIRED FOR HOMEASSISTANT":0,
   "mqtt_format_json": true,
+  "// Send /ble/service_name/ad:dr:es:ss for decoded service data":0,
   "mqtt_format_decoded_key_topic": true,
+
+  "// Whether to enable Home Assistant integration":0,
   "homeassistant": true,
-  "mqtt_cache_state": true
 }

lib/config.js

@@ -62,7 +62,6 @@ exports.mqtt_advertise_service_data      = true;
 exports.mqtt_format_json                 = true;
 exports.mqtt_format_decoded_key_topic    = true;
 exports.homeassistant                    = false;
-exports.mqtt_cache_state                 = false;
 
 function log(x) {
   console.log("[Config] " + x);
@@ -128,8 +127,6 @@ exports.init = function () {
       exports.mqtt_format_decoded_key_topic = json.mqtt_format_decoded_key_topic;
     if (json.hasOwnProperty("homeassistant"))
       exports.homeassistant = json.homeassistant;
-    if (json.hasOwnProperty("mqtt_cache_state"))
-      exports.mqtt_cache_state = json.mqtt_cache_state;
 
     log("Config " + config_filename + " loaded");
   } else {