save rssi while connected

src/main.cpp

@@ -206,7 +206,7 @@ void ICACHE_FLASH_ATTR sendValues() {
 
   JsonObject& rssiObject = array.createNestedObject();
   rssiObject["sensor"] = SENSOR8_ID;
-  rssiObject["value"] = WiFi.RSSI();
+  rssiObject["value"] = sd.rssi;
 
 
   char buffer[500];
@@ -276,6 +276,7 @@ void ICACHE_FLASH_ATTR sendValues() {
     last_dhcp = millis();
   }
 
+  sd.rssi = WiFi.RSSI();
 
   int httpCode = 0;
   for (int tries=0; tries<3 && httpCode != HTTP_CODE_CREATED; tries++) {