Add WiFi-RSSI to the home site

tools/esp8266/html/index.html

@@ -17,6 +17,7 @@
             </p>
             <p><span class="des">Uptime: </span><span id="uptime"></span></p>
             <p><span class="des">ESP-Time: </span><span id="date"></span></p>
+            <p><span class="des">RSSI: </span><span id="wifi_rssi"></span>dBm</p>
             <p>
                 <span class="des">Statistics: </span>
                 <pre id="stat"></pre>
@@ -48,6 +49,7 @@
             var mIntervalSet = false;
             function parseSys(obj) {
                 document.getElementById("version").innerHTML = "Git SHA: " + obj["build"] + " :: " + obj["version"];
+                document.getElementById("wifi_rssi").innerHTML = obj["wifi_rssi"];;
 
                 var date = new Date(obj["ts_now"] * 1000);
                 var up = obj["ts_uptime"];