Show WIFI signal text labels / Log RSSI value to logfile (#1877)

* Overview: WIFI RSSI strength text labels

* Log RSSI value (debug level)

* Typo

code/components/jomjol_tfliteclass/server_tflite.cpp

@@ -870,12 +870,12 @@ void task_autodoFlow(void *pvParameter)
             LogFile.RemoveOldDataLog();
         }
         
-        //CPU Temp
-        float cputmp = temperatureRead();
+        //CPU Temp -> Logfile
         std::stringstream stream;
-        stream << std::fixed << std::setprecision(1) << cputmp;
-        string zwtemp = "CPU Temperature: " + stream.str();
-        LogFile.WriteToFile(ESP_LOG_DEBUG, TAG, zwtemp); 
+        stream << std::fixed << std::setprecision(1) << temperatureRead();
+        LogFile.WriteToFile(ESP_LOG_DEBUG, TAG, "CPU Temperature: " + stream.str() + "°C");
+        // WIFI Signal Strength (RSSI) -> Logfile
+        LogFile.WriteToFile(ESP_LOG_DEBUG, TAG, "WIFI Signal (RSSI): " + std::to_string(get_WIFI_RSSI()) + "dBm");
 
         LogFile.WriteToFile(ESP_LOG_INFO, TAG, "Round #" + std::to_string(countRounds) + 
                 " completed (" + std::to_string(getUpTime() - roundStartTime) + " seconds)");

sd-card/html/overview.html

@@ -154,7 +154,22 @@
 		xhttp.onreadystatechange = function() {
 			if (this.readyState == 4 && this.status == 200) {
 				var _rsp = xhttp.responseText;
-				$('#rssi').html("RSSI: " + _rsp);
+				var _rspVal = _rsp.split("d")[0]
+				if (_rspVal >= -55) {
+					$('#rssi').html("WIFI Signal: Excellent (" + _rsp + ")");
+				}
+				else if (_rspVal < -55 && _rspVal >= -67) {
+					$('#rssi').html("WIFI Signal: Good (" + _rsp + ")");
+				}
+				else if (_rspVal < -67 && _rspVal >= -78) {
+					$('#rssi').html("WIFI Signal: Fair (" + _rsp + ")");
+				}
+				else if (_rspVal < -78 && _rspVal >= -85) {
+					$('#rssi').html("WIFI Signal: Weak (" + _rsp + ")");
+				}
+				else {
+					$('#rssi').html("WIFI Signal: Unreliable (" + _rsp + ")");
+				}
 			}
 		}
 		xhttp.open("GET", url, true);