Added Uptime library and showing of uptime values.

WLAN_Thermometer.ino

@@ -13,6 +13,7 @@
 #include <Time.h>
 #include <DHT.h>
 #include <esp_task_wdt.h>
+#include <uptime.h>
 
 #define MDNS_NAME             "wlanthermometer"
 #define AP_SSID_CONFIG_NAME   "WLANTHERMOMETER-Config"
@@ -50,6 +51,7 @@ uint8_t add_summertime = 0;
 bool last_reset_ap_check = false;
 //bool minmax_enabled = false;
 char date_string_old[9];
+char uptime_string[23];
 
 enum {
   ACT,
@@ -337,6 +339,10 @@ void loop()
                 client.println("</h4>");
               }
 
+              client.print("<h5 style=\"color:black;\">");
+              client.print(uptime_string);
+              client.println("</h5>");
+
               client.println("</center>");
               client.println("</body>");
               client.println("</html>");
@@ -388,6 +394,8 @@ void show_time(void)
   char date_string[11];
   char time_string[9];
 
+  uptime::calculateUptime();
+
   if (DateTime.isTimeValid())
   {
     DateTimeParts p = DateTime.getParts();
@@ -405,12 +413,15 @@ void show_time(void)
 
     sprintf(date_string, "%02d.%02d.%4d", p.getMonthDay(), p.getMonth() + 1, p.getYear());
     sprintf(time_string, "%02d:%02d:%02d", p.getHours() + add_summertime, p.getMinutes(), p.getSeconds());
+    sprintf(uptime_string, "Uptime: %4dd %02d:%02d:%02d", uptime::getDays(), uptime::getHours(), uptime::getMinutes(), uptime::getSeconds());
 
     DEBUG_MSG("%s %s", date_string, time_string);
     if (add_summertime > 0)
       DEBUG_MSG(" Summertime\n");
     else
       DEBUG_MSG(" Wintertime\n");
+
+    DEBUG_MSG("%s\n", uptime_string);
   }
   else
   {