generate basic JSON output

things.ino

@@ -381,6 +381,22 @@ void setup() {
     delay(100);
   });
 
+  http_server.on("/json", [](){
+    read_sensor();
+    DynamicJsonBuffer jsonBuffer;
+    JsonObject& json = jsonBuffer.createObject();
+    json["mqtt_server"] = mqtt_server;
+    json["mqtt_port"] = mqtt_port;
+    json["mqtt_topic"] = mqtt_topic;
+    json["temperature"] = str_temperature;
+    json["humidity"] = str_humidity;
+    json["heatindex"] = str_heatindex;
+    String response;
+    json.printTo(response);
+    http_server.send(200, "text/plain", response);
+    delay(100);
+  });
+
   // start the web server
   http_server.begin();
   Serial.println("HTTP server started");