Added files web service (directory) and fixed setDT service to fastforward the clock.

.gitignore

@@ -4,3 +4,4 @@
 .clang_complete
 .gcc-flags.json
 firmware.bin
+/data/*

platformio.ini

@@ -19,6 +19,8 @@ lib_deps =
   MD_MAX72XX
   IOTAppStory-ESP
   NTPClient
+  ESPAsyncTCP
+  ESP Async WebServer
 
 upload_port = /dev/cu.wchusbserial1420
 upload_speed = 921600

src/MD_RobotEyes_Data.h

@@ -23,21 +23,21 @@ const MD_RobotEyes::animFrame_t MD_RobotEyes::seqWink[] /*PROGMEM*/ =
   { { 2, 0 }, FRAME_TIME/2 },
   { { 3, 0 }, FRAME_TIME/2 },
   { { 4, 0 }, FRAME_TIME/2 },
-  { { 5, 0 }, FRAME_TIME * 2 },
+  { { 5, 0 }, FRAME_TIME },
 };
 
 const MD_RobotEyes::animFrame_t MD_RobotEyes::seqRight[] /*PROGMEM*/ =
 {
   { { 0, 0 }, FRAME_TIME },
   { { 6, 6 }, FRAME_TIME },
-  { { 7, 7 }, FRAME_TIME * 5 },
+  { { 7, 7 }, FRAME_TIME * 3 },
 };
 
 const MD_RobotEyes::animFrame_t MD_RobotEyes::seqLeft[] /*PROGMEM*/ =
 {
   { { 0, 0 }, FRAME_TIME },
   { { 8, 8 }, FRAME_TIME },
-  { { 9, 9 }, FRAME_TIME * 5 },
+  { { 9, 9 }, FRAME_TIME * 3 },
 };
 
 const MD_RobotEyes::animFrame_t MD_RobotEyes::seqUp[] /*PROGMEM*/ =
@@ -53,7 +53,7 @@ const MD_RobotEyes::animFrame_t MD_RobotEyes::seqDown[] /*PROGMEM*/ =
   { { 00, 00 }, FRAME_TIME },
   { { 14, 14 }, FRAME_TIME },
   { { 15, 15 }, FRAME_TIME },
-  { { 16, 16 }, FRAME_TIME * 5 },
+  { { 16, 16 }, FRAME_TIME * 3 },
 };
 
 const MD_RobotEyes::animFrame_t MD_RobotEyes::seqAngry[] /*PROGMEM*/ =
@@ -62,7 +62,7 @@ const MD_RobotEyes::animFrame_t MD_RobotEyes::seqAngry[] /*PROGMEM*/ =
   { { 22, 17 }, FRAME_TIME },
   { { 23, 18 }, FRAME_TIME },
   { { 24, 19 }, FRAME_TIME },
-  { { 25, 20 }, 2000 },
+  { { 25, 20 }, 1000 },
 };
 
 const MD_RobotEyes::animFrame_t MD_RobotEyes::seqSad[] /*PROGMEM*/ =
@@ -70,14 +70,14 @@ const MD_RobotEyes::animFrame_t MD_RobotEyes::seqSad[] /*PROGMEM*/ =
   { { 00, 00 }, FRAME_TIME },
   { { 32, 27 }, FRAME_TIME },
   { { 33, 28 }, FRAME_TIME },
-  { { 34, 29 }, 2000 },
+  { { 34, 29 }, 1000 },
 };
 
 const MD_RobotEyes::animFrame_t MD_RobotEyes::seqEvil[] /*PROGMEM*/ =
 {
   { { 00, 00 }, FRAME_TIME },
   { { 39, 37 }, FRAME_TIME },
-  { { 40, 38 }, 2000 },
+  { { 40, 38 }, 1000 },
 };
 
 const MD_RobotEyes::animFrame_t MD_RobotEyes::seqEvil2[] /*PROGMEM*/ =
@@ -86,7 +86,7 @@ const MD_RobotEyes::animFrame_t MD_RobotEyes::seqEvil2[] /*PROGMEM*/ =
   { { 54, 17 }, FRAME_TIME },
   { { 55, 18 }, FRAME_TIME },
   { { 56, 19 }, FRAME_TIME },
-  { { 57, 20 }, 2000 },
+  { { 57, 20 }, 1000 },
 };
 
 const MD_RobotEyes::animFrame_t MD_RobotEyes::seqSquint[] /*PROGMEM*/ =
@@ -95,7 +95,7 @@ const MD_RobotEyes::animFrame_t MD_RobotEyes::seqSquint[] /*PROGMEM*/ =
   { { 54, 54 }, FRAME_TIME },
   { { 55, 55 }, FRAME_TIME },
   { { 56, 56 }, FRAME_TIME },
-  { { 57, 57 }, 2000 },
+  { { 57, 57 }, 1000 },
 };
 
 const MD_RobotEyes::animFrame_t MD_RobotEyes::seqDead[] /*PROGMEM*/ =

src/Relays.cpp

@@ -0,0 +1,85 @@
+#include "Relays.h"
+
+static unsigned long last_relay_off_ts=0, last_relay_hold_ts=0;
+enum RelayState { RELAY_STATE_OFF=0, RELAY_STATE_ON_EVEN_MINUTE, RELAY_STATE_ON_ODD_MINUTE };
+static RelayState relaysState = RELAY_STATE_OFF;
+static RelayState lastRelayOnState = RELAY_STATE_ON_EVEN_MINUTE;
+static bool relayCanSwitch=true;
+
+void Relays::begin(int _relay1Pin, int _relay2Pin) {
+  relay1Pin = _relay1Pin;
+  relay2Pin = _relay2Pin;
+  pinMode(relay1Pin, OUTPUT);
+  pinMode(relay2Pin, OUTPUT);
+  digitalWrite(relay1Pin, LOW);
+  digitalWrite(relay2Pin, LOW);
+}
+
+void Relays::toggle() {
+  if (relayCanSwitch) {
+    if (lastRelayOnState == RELAY_STATE_ON_EVEN_MINUTE) {
+      digitalWrite(relay1Pin, HIGH);
+      digitalWrite(relay2Pin, LOW);
+      relaysState = RELAY_STATE_ON_ODD_MINUTE;
+      // P.print("R-OEv");
+    } else {
+      digitalWrite(relay1Pin, LOW);
+      digitalWrite(relay2Pin, HIGH);
+      relaysState = RELAY_STATE_ON_EVEN_MINUTE;
+      // P.print("R-OOd");
+    }
+    lastRelayOnState = relaysState;
+  } // else P.print("R-OErr");
+  relayCanSwitch = false;
+  last_relay_hold_ts = millis();
+  // increment displayed time
+  displayedTime_minutes++;
+  if (displayedTime_minutes >= 60) {
+    displayedTime_hours++;
+    displayedTime_minutes -= 60;
+    if (displayedTime_hours >= 24) {
+      displayedTime_hours = 0;
+    }
+  }
+  if (fastforwardMode) {
+    if (displayedTime_hours == targetHours && displayedTime_minutes == targetMinutes) {
+      // wanted time reached!
+      fastforwardMode = false;
+    }
+  }
+  Serial.println(F("Toggle Relays"));
+}
+
+void Relays::off(void) {
+  digitalWrite(relay1Pin, LOW);
+  digitalWrite(relay2Pin, LOW);
+  last_relay_off_ts = millis();
+  relaysState = RELAY_STATE_OFF;
+  // P.print("R-Off");
+}
+
+void Relays::loop(void) {
+  if (relaysState == RELAY_STATE_OFF) {
+    if (millis() - last_relay_off_ts > minOffTime_ms) {
+      relayCanSwitch = true;
+      if (fastforwardMode) toggle();
+    }
+  } else {
+    if (millis() - last_relay_hold_ts > holdTime_ms) {
+      off();
+    }
+  }
+}
+
+void Relays::fwdToTime(unsigned int hours, unsigned int minutes) {
+  // @TODO
+  // as we have a 12h clock, we adjust displayedTime to be before the wanted time
+  if (hours < displayedTime_hours ||
+      (hours == displayedTime_hours && minutes < displayedTime_minutes)) {
+          displayedTime_hours -= 12;
+          if (displayedTime_hours < 0) displayedTime_hours += 24;
+  }
+  targetHours = hours;
+  targetMinutes = minutes;
+  fastforwardMode = true;
+}

src/Relays.h

@@ -0,0 +1,40 @@
+//
+//    FILE: Relays.h
+// VERSION: 1.0
+// PURPOSE: Handle two relays used to toggle voltage polarity to control a clock
+//
+//
+
+#ifndef _relaysLoaded
+#define _relaysLoaded true
+
+#include <Arduino.h>
+
+class Relays {
+public:
+  Relays():holdTime_ms(200), minOffTime_ms(100), fastforwardMode(false) {};
+  void begin(int _relay1Pin, int _relay2Pin);
+  void toggle();
+  void off();
+  void loop();
+  void setHoldTime_ms(unsigned int newValue) { holdTime_ms = newValue; }
+  void setMinOffTime_ms(unsigned int newValue) { minOffTime_ms = newValue; }
+  unsigned int getHoldTime_ms() { return holdTime_ms; }
+  unsigned int getMinOffTime_ms() { return minOffTime_ms; }
+  void setDisplayedTime(unsigned int h, unsigned int m) { displayedTime_hours = h; displayedTime_minutes = m; }
+  unsigned int getDisplayedTime_hours() { return displayedTime_hours; }
+  unsigned int getDisplayedTime_minutes() { return displayedTime_minutes; }
+  void fwdToTime(unsigned int hours, unsigned int minutes);
+protected:
+  int relay1Pin, relay2Pin;
+  unsigned int holdTime_ms;
+  unsigned int minOffTime_ms;
+  unsigned int displayedTime_hours;
+  unsigned int displayedTime_minutes;
+  unsigned int targetHours;
+  unsigned int targetMinutes;
+  boolean fastforwardMode;
+
+};
+
+#endif

src/data/index.htm

@@ -0,0 +1,94 @@
+<!DOCTYPE html>
+<html>
+
+<head>
+  <meta http-equiv="Content-type" content="text/html; charset=utf-8">
+  <meta name="viewport" content="width=device-width,initial-scale=1">
+  <title>Fastclock</title>
+  <link href="main.css" rel="stylesheet" type="text/css" />
+  <link rel="manifest" href="manifest.json">
+  <script type="text/javascript">
+    var button = document.getElementById("button");
+    var led = document.getElementById("led");
+
+    function ajaxGet(url, responseCallback) {
+      var xh = new XMLHttpRequest();
+      xh.onreadystatechange = function () {
+        if (xh.readyState == 4) {
+          if (xh.status == 200) {
+            var result = JSON.parse(xh.responseText);
+            responseCallback(result);
+          }
+        }
+      };
+      xh.open("GET", url, true);
+      xh.send(null);
+    };
+
+    function handleFwdClockResponse(result) {
+      if (result.result == "OK") {
+        led.src = "led-on.png";
+        var clockName = document.getElementById("clockNameId");
+        clockName.html = result.clockName;
+        var displayedTime = document.getElementById("displayedTimeId");
+        displayedTime.html = result.hours + ":" + result.minutes + " " + result.seconds;
+      } else {
+        led.src = "led-off.png";
+      }
+    };
+
+    function fwdClock() {
+      ajaxGet("/fwd", handleFwdClockResponse);
+    };
+
+    function handleClockStatusResponse(result) {
+
+    };
+
+    function getClockStatus() {
+      ajaxGet("/clock", handleClockStatusResponse);
+      setTimeout(function() {
+        getClockStatus();
+      }, 400);
+    };
+
+    function setDisplayedTime() {
+      var hoursInput = document.getElementById("displayedHoursInputId");
+      var minutesInput = document.getElementById("displayedMinutesInputId");
+      alert("Values=" + hoursInput.value + ":" + minutesInput.value);
+    }
+
+    function onBodyLoad() {
+      var button = document.getElementById("button");
+      button.onmousedown = function(event) {
+        event.stopPropagation();
+        event.preventDefault();
+        button.src = "btn-do.png";
+        fwdClock();
+        navigator.vibrate(20);
+      };
+      button.onmouseup = function() {
+        setTimeout(function() {
+          button.src = "btn.png";
+        }, 400);
+      };
+      setTimeout(function() {
+        getClockStatus();
+      }, 400);
+    };
+  </script>
+</head>
+
+<body id="index" onload="onBodyLoad()">
+  <div class="hdr"><img src="fremoei.gif"></div>
+  <div><label>Clock name: </label><span id="clockNameId"></span></div>
+  <div><label>Time: </label><span id="displayedTimeId"></span></div>
+  <div>
+    <input type="number" min="0" max="23" id="displayedHoursInputId">
+    <input type="number" min="0" max="59" id="displayedMinutesInputId">
+    <input type="button" onclick="setDisplayedTime">
+  </div>
+  <div class="btn_cnt"><img id="led" src="led-off.png"><a href="#"><img id="button" src="btn.png"></a></div>
+</body>
+
+</html>

src/data/main.css

@@ -0,0 +1,47 @@
+html {
+  width: 100%;
+  height: 100%;
+  -webkit-box-sizing: border-box;
+  -moz-box-sizing: border-box;
+  box-sizing: border-box;
+}
+
+*, *:before, *:after {
+  -webkit-box-sizing: inherit;
+  -moz-box-sizing: inherit;
+  box-sizing: inherit;
+}
+
+:focus {
+  outline: none;
+  outline-style: none;
+  box-shadow: none;
+  border-color: transparent;
+}
+
+body {
+  width: 100%;
+  height: 100%;
+  margin: 0;
+  padding: 0;
+  background: #EEE;
+  font-family: Arial, Helvetica, sans-serif;
+  font-size: 12px;
+  text-align: center;
+  color: #555;
+}
+
+.hdr {
+  width: 100%;
+  padding: 15px 0 15px 0;
+}
+
+.btn_cnt {
+  width: 111px;
+  margin: 0 auto 0 auto;
+  padding-top: 5%;
+}
+
+.btn_cnt a {
+  -webkit-tap-highlight-color: rgba(255, 255, 255, 0);
+}

src/data/manifest.json

@@ -0,0 +1,39 @@
+{
+  "name": "Fastclock Client",
+  "icons": [{
+    "src": "icon-0-75x.png",
+    "sizes": "36x36",
+    "type": "image/png",
+    "density": 0.75
+  }, {
+    "src": "icon-1x.png",
+    "sizes": "48x48",
+    "type": "image/png",
+    "density": 1.0
+  }, {
+    "src": "icon-1-5x.png",
+    "sizes": "72x72",
+    "type": "image/png",
+    "density": 1.5
+  }, {
+    "src": "icon-2x.png",
+    "sizes": "96x96",
+    "type": "image/png",
+    "density": 2.0
+  }, {
+    "src": "icon-3x.png",
+    "sizes": "144x144",
+    "type": "image/png",
+    "density": 3.0
+  }, {
+    "src": "icon-4x.png",
+    "sizes": "192x192",
+    "type": "image/png",
+    "density": 4.0
+  }],
+  "start_url": "index.htm",
+  "display": "standalone",
+  "orientation": "portrait",
+  "theme_color": "dimgray",
+  "background_color": "black"
+}

src/main.cpp

@@ -2,6 +2,8 @@
  */
 
 #define COMPDATE __DATE__ __TIME__
+#define APP_VERSION "0.2.18"
+
 // Button pin on the esp for selecting modes. 0 for Generic devices!
 #define MODEBUTTON D3
 #define RELAY1_PIN D1
@@ -12,8 +14,8 @@
 #define VERTICAL_BAR_STARTS_TOP false
 #define DEBUG_RELAYS false
 #define DEBUG_DISPLAY false
-#define STARTUP1_ANIMATION_DURATION_ms 15000
+#define STARTUP1_ANIMATION_DURATION_ms 2000
-#define STARTUP2_ANIMATION_DURATION_ms 45000
+#define STARTUP2_ANIMATION_DURATION_ms 33000
 
 #include <Arduino.h>
 #include <IOTAppStory.h>
@@ -24,6 +26,11 @@
 #include <ESP8266WiFi.h>
 #include <WiFiUdp.h>
 #include "MD_RobotEyes.h"
+#include <FS.h>
+#include <ESPAsyncTCP.h>                               // https://github.com/me-no-dev/AsyncTCP
+#include <ESPAsyncWebServer.h>
+#include <ESP8266HTTPClient.h>
+#include "Relays.h"
 
 IOTAppStory IAS(COMPDATE, MODEBUTTON);
 String deviceName = "wemosMatrixDisplay";
@@ -52,9 +59,11 @@ Your hardware matches the setting for FC-16 modules. Please set FC16_HW.
 // Arbitrary output pins
 MD_Parola P = MD_Parola(HARDWARE_TYPE, DISPLAY_DATA_PIN, DISPLAY_CLK_PIN, DISPLAY_CS_PIN, MAX_DEVICES);
 MD_RobotEyes E;
+Relays R;
 
 WiFiUDP ntpUDP;
 NTPClient timeClient(ntpUDP, "europe.pool.ntp.org", 3600, 60000);
+AsyncWebServer server(80);
 
 // Field default values
 char *clockName = "FREMO";
@@ -64,9 +73,7 @@ char *relay1Pin_String = "D1";
 char *relay2Pin_String = "D2";
 int relay1Pin = D1, relay2Pin = D2;
 char *relayHoldTime_ms_String = "200";
-unsigned int relayHoldTime_ms = 200;
 char *relayMinOffTime_ms_String = "100";
-unsigned int relayMinOffTime_ms = 100;
 unsigned int displayRefresh_ms = 200;
 
 // Clock Display Config Parameter
@@ -74,7 +81,12 @@ static char * displayClockNameEvery_ms_String = "16000";
 static char * displayClockNameDuration_ms_String = "1200";
 static uint32_t displayClockNameEvery_ms = 16000;
 static uint32_t displayClockNameDuration_ms = 1200;
-static uint32_t doNotShowClockNameBeforeAndAfterMinuteChange_s = 2;
+static uint16_t doNotShowClockNameBeforeAndAfterMinuteChange_s = 2;
+
+static uint16_t hours, minutes, seconds;
+static char minuteProgressIndicator;
+static char timeBuffer[10];
+
 
 void setupIAS(void) {
   #if defined  ESP8266
@@ -87,7 +99,7 @@ void setupIAS(void) {
   // preset deviceName this is also your MDNS responder: http://deviceName.local
   IAS.preSetDeviceName(deviceName);
   IAS.preSetAppName(F("Wemos2RelaysMatrixDisplays"));
-  IAS.preSetAppVersion(F("0.2.1"));
+  IAS.preSetAppVersion(F(APP_VERSION));
   IAS.preSetAutoUpdate(true);
 
   // define fields
@@ -150,12 +162,12 @@ void setupIAS(void) {
   // Call home interval in seconds, use 60s only for development.
   // Please change it to at least 2 hours in production
   IAS.setCallHomeInterval(120);
-  //IAS.callHome(false /*SPIFFS-check*/);
+  IAS.callHome(true /*SPIFFS-check*/);
   clockSpeed_modelMsPerRealSec = atoi(clockSpeed_modelMsPerRealSec_String);
   relay1Pin = IAS.dPinConv(relay1Pin_String);
   relay2Pin = IAS.dPinConv(relay2Pin_String);
-  relayHoldTime_ms = atoi(relayHoldTime_ms_String);
+  R.setHoldTime_ms(atoi(relayHoldTime_ms_String));
-  relayMinOffTime_ms = atoi(relayMinOffTime_ms_String);
+  R.setMinOffTime_ms(atoi(relayMinOffTime_ms_String));
   displayClockNameEvery_ms = atoi(displayClockNameEvery_ms_String);
   displayClockNameDuration_ms = atoi(displayClockNameDuration_ms_String);
 
@@ -163,20 +175,13 @@ void setupIAS(void) {
   Serial.print(F("Relay1 Pin: ")); Serial.println(relay1Pin);
   Serial.print(F("Relay2 Pin: ")); Serial.println(relay2Pin);
   Serial.print(F("Clock speed: ")); Serial.print(clockSpeed_modelMsPerRealSec); Serial.println(F(" model ms per real sec"));
-  Serial.print(F("Relay hold time (ms): ")); Serial.println(relayHoldTime_ms);
+  Serial.print(F("Relay hold time (ms): ")); Serial.println(relayHoldTime_ms_String);
-  Serial.print(F("Relay min off time (ms): ")); Serial.println(relayMinOffTime_ms);
+  Serial.print(F("Relay min off time (ms): ")); Serial.println(relayMinOffTime_ms_String);
   Serial.print(F("Clock speed (model ms per real time s): ")); Serial.println(clockSpeed_modelMsPerRealSec);
   Serial.print(F("Show clock name every (ms): ")); Serial.println(displayClockNameEvery_ms);
   Serial.print(F("Show clock name for (ms): ")); Serial.println(displayClockNameDuration_ms);
 }
 
-void setupRelays(int relay1Pin, int relay2Pin) {
-  pinMode(relay1Pin, OUTPUT);
-  pinMode(relay2Pin, OUTPUT);
-  digitalWrite(relay1Pin, LOW);
-  digitalWrite(relay2Pin, LOW);
-}
-
 static MD_MAX72XX *graphicDisplay = NULL;
 
 void setupDisplay() {
@@ -224,15 +229,152 @@ void setupDisplay() {
   P.print(intro);
 }
 
+//called when the url is not defined here return 404
+void onRequest(AsyncWebServerRequest *request){
+  //Handle Unknown Request
+  request->send(404);
+}
+
+void setupFS() {
+  if(!SPIFFS.begin()){
+    Serial.println(F(" SPIFFS Mount Failed"));
+    return;
+  }
+}
+
+void setupWebServer() {
+  server.on("/fwd", HTTP_GET, [](AsyncWebServerRequest *request){
+    Serial.println(F("\n WebApp button pressed -- move clock forward"));
+
+    R.toggle();
+
+    // create json return
+    String json = "{";
+    json += "\"result\":\"OK\",";
+    json += "\"clockName\":\"" + String(clockName) + "\",";
+    json += "\"hours\":\"" + String(hours) + "\",";
+    json += "\"minutes\":\"" + String(minutes) + "\",";
+    json += "\"seconds\":\"" + String(seconds) + "\"";
+    json += "}";
+
+    // return json to WebApp
+    request->send(200, F("text/json"), json);
+    json = String();
+  });
+
+  server.on("/clock", HTTP_GET, [](AsyncWebServerRequest *request){
+    // create json return
+    String json = "{";
+    json += "\"clockName\":\""+String(clockName)+"\",";
+    json += "\"clockSpeed\":\""+String(clockSpeed_modelMsPerRealSec)+"\",";
+    json += "\"relayHoldTime_ms\":\""+String(R.getHoldTime_ms())+"\",";
+    json += "\"relayMinOffTime_ms\":\""+String(R.getMinOffTime_ms())+"\",";
+    json += "\"displayRefresh_ms\":\""+String(displayRefresh_ms)+"\",";
+    json += "\"displayClockNameEvery_ms\":\""+String(displayClockNameEvery_ms)+"\",";
+    json += "\"displayClockNameDuration_ms\":\""+String(displayClockNameDuration_ms)+"\",";
+    json += "\"doNotShowClockNameBeforeAndAfterMinuteChange_s\":\""+String(doNotShowClockNameBeforeAndAfterMinuteChange_s)+"\",";
+    json += "\"real_hours\":\""+String(hours)+"\",";
+    json += "\"real_minutes\":\""+String(minutes)+"\",";
+    json += "\"real_seconds\":\""+String(seconds)+"\",";
+    json += "\"model_hours\":\""+String(hours)+"\",";
+    json += "\"model_minutes\":\""+String(minutes)+"\",";
+    json += "\"model_seconds\":\""+String(seconds)+"\"";
+    json += "}";
+
+    // return json to WebApp
+    request->send(200, F("text/json"), json);
+    json = String();
+  });
+
+  server.on("/setDT", HTTP_GET, [](AsyncWebServerRequest *request){
+    String h, m, message;
+    Serial.println(F("\n Setting displayed time of clock"));
+
+    message = "";
+    if (request->hasParam("h")) {
+        h = request->getParam("h")->value();
+    } else {
+        message += "Parameter h for hours missing. ";
+    }
+    if (request->hasParam("m")) {
+        m = request->getParam("m")->value();
+    } else {
+        message += "Parameter m for minutes missing. ";
+    }
+
+    R.setDisplayedTime(h.toInt(), m.toInt());
+    h = String();
+    m = String();
+
+    // create json return
+    String json = "{";
+    if (message.length() > 0) {
+      json += "\"result\":\"Error\",";
+      json += "\"message\": \"" + message + "\"";
+    } else {
+      json += "\"result\":\"OK\"";
+    }
+    json += "}";
+
+    // return json to WebApp
+    request->send(200, F("text/json"), json);
+    json = String();
+    R.fwdToTime(hours, minutes);
+  });
+
+  server.on("/files", HTTP_GET, [](AsyncWebServerRequest *request){
+    Serial.println(F("\n Directory of FS requested"));
+    FSInfo fs_info;
+    String message = "";
+
+    if (!SPIFFS.info(fs_info)) {
+      message += "Cannot get info about file system! ";
+    }
+
+    // create json return
+    String json = "{";
+    if (message.length() > 0) {
+      json += "\"result\":\"Error\",";
+      json += "\"message\":\"" + message + "\"";
+    } else {
+      json += "\"result\":\"OK\",";
+      json += "\"files\":\"[";
+      Dir dir = SPIFFS.openDir("/");
+      boolean isFirstEntry = true;
+      while (dir.next()) {
+        if (isFirstEntry) { isFirstEntry = false; } else { json += ","; }
+        json += "{\"filename\":\"" + dir.fileName() + "\",\"size\":" + dir.fileSize() + "}";
+      }
+      json += "]";
+    }
+    json += "}";
+
+    // return json to WebApp
+    request->send(200, F("text/json"), json);
+    json = String();
+  });
+
+
+  server.serveStatic("/", SPIFFS, "/");
+  server.onNotFound(onRequest);
+
+  // start the HTTP server
+  server.begin();
+  Serial.print(F("HTTP server started at: "));
+  Serial.println(WiFi.localIP());
+  Serial.println("");
+}
+
 
 void setup(void)
 {
   Serial.println(F("setup():"));
   setupDisplay();
+  setupFS();
   setupIAS();
+  setupWebServer();
   delay(200);
-  setupRelays(relay1Pin, relay2Pin);
+  R.begin(relay1Pin, relay2Pin);
-
   timeClient.begin();
   Serial.println(F("setup() finished"));
 }
@@ -242,51 +384,6 @@ static bool timeClientInitialized = false;
 static unsigned long lastTimeOutput_ms = 0;
 #define TIME_BETWEEN_REALTIME_UPDATE_ms 60000
 
-static unsigned long last_relay_off_ts=0, last_relay_hold_ts=0;
-enum RelayState { RELAY_STATE_OFF=0, RELAY_STATE_ON_EVEN_MINUTE, RELAY_STATE_ON_ODD_MINUTE };
-static RelayState relaysState = RELAY_STATE_OFF;
-static RelayState lastRelayOnState = RELAY_STATE_ON_EVEN_MINUTE;
-static bool relayCanSwitch=true;
-
-void toggleRelays() {
-  if (relayCanSwitch) {
-    if (lastRelayOnState == RELAY_STATE_ON_EVEN_MINUTE) {
-      digitalWrite(relay1Pin, HIGH);
-      digitalWrite(relay2Pin, LOW);
-      relaysState = RELAY_STATE_ON_ODD_MINUTE;
-      // P.print("R-OEv");
-    } else {
-      digitalWrite(relay1Pin, LOW);
-      digitalWrite(relay2Pin, HIGH);
-      relaysState = RELAY_STATE_ON_EVEN_MINUTE;
-      // P.print("R-OOd");
-    }
-    lastRelayOnState = relaysState;
-  } // else P.print("R-OErr");
-  relayCanSwitch = false;
-  last_relay_hold_ts = millis();
-  Serial.println(F("Toggle Relays"));
-}
-
-void relaysOff(void) {
-  digitalWrite(relay1Pin, LOW);
-  digitalWrite(relay2Pin, LOW);
-  last_relay_off_ts = millis();
-  relaysState = RELAY_STATE_OFF;
-  // P.print("R-Off");
-}
-
-void loopRelays(void) {
-  if (relaysState == RELAY_STATE_OFF) {
-    if (millis() - last_relay_off_ts > relayMinOffTime_ms) {
-      relayCanSwitch = true;
-    }
-  } else {
-    if (millis() - last_relay_hold_ts > relayHoldTime_ms) {
-      relaysOff();
-    }
-  }
-}
 
 typedef struct
 {
@@ -330,6 +427,7 @@ void loopStartupAnimation() {
       index++;
       if (index >= ARRAY_SIZE(eSeq))
         index = 0;
+      P.displayClear();
       #if DISPLAY_ANIM_NAME
         E.setText(eSeq[index].name);
       #endif
@@ -363,14 +461,26 @@ void loopStartupAnimation() {
   }
 }
 
+void reInitializeDisplay() {
+  static unsigned long last_reinit_ts = 0;
+  #define REINIT_AFTER_ms 5000
+  #define AVOID_REINIT_BEFORE_AND_AFTER_FULLMINUTE_FOR_s 3
+
+  if (last_reinit_ts == 0) last_reinit_ts = millis();
+
+  if (millis() - last_reinit_ts > REINIT_AFTER_ms
+      && seconds < 60 - AVOID_REINIT_BEFORE_AND_AFTER_FULLMINUTE_FOR_s
+      && seconds > AVOID_REINIT_BEFORE_AND_AFTER_FULLMINUTE_FOR_s) {
+    P.begin();
+    last_reinit_ts = millis();
+  }
+}
+
 void loop(void)
 {
   int currentDisplayState;
-  int hours, minutes, seconds;
-  char minuteProgressIndicator;
   static int lastMinutes = 0;
   static int lastSeconds = 0;
-  static char timeBuffer[10];
   #define MsgSize 10
   static char debugMsg[MsgSize+1];
   static int recentDisplayState = -1;
@@ -415,32 +525,6 @@ void loop(void)
   if (minuteProgressIndicator > 9) minuteProgressIndicator = 9;
   snprintf(timeBuffer, 10, "%c %2d:%02d", minuteProgressIndicator, hours, minutes);
 
-  //P.displayAnimate();
-  //P.displayClear();
-  /* DEBUG */
-  #if DEBUG_RELAYS
-  if (seconds != lastSeconds) {
-    switch (seconds % 4) {
-      case 0:
-        digitalWrite(relay1Pin, HIGH);
-        break;
-      case 1:
-        digitalWrite(relay1Pin, LOW);
-        break;
-      case 2:
-        digitalWrite(relay2Pin, HIGH);
-        break;
-      case 3:
-        digitalWrite(relay2Pin, LOW);
-        break;
-    }
-    Serial.print("Rel dbg: "); Serial.println(seconds, HEX);
-    delay(5);
-  }
-  #endif
-  /* END DEBUG */
-
-
   // standard procedure to display
   static uint32_t last_clock_refresh = 0;
   static uint32_t lastTimeClockNameShown = 0;
@@ -455,7 +539,8 @@ void loop(void)
     if ((millis() - lastTimeClockNameShown > displayClockNameEvery_ms)
         && (seconds < 60-doNotShowClockNameBeforeAndAfterMinuteChange_s)
         && (seconds > doNotShowClockNameBeforeAndAfterMinuteChange_s)) {
-      P.begin(); // re-initialize, that fixes display problems due to electrical relais feedbacks
+      //P.begin(); // re-initialize, that fixes display problems due to electrical relais feedbacks
+      reInitializeDisplay();
       P.setIntensity(2);
       P.print(clockName);
       lastTimeClockNameShown = millis();
@@ -463,7 +548,8 @@ void loop(void)
     } else {
       // showing clock
       if (millis() - last_clock_refresh > displayRefresh_ms) {
-        //P.displayClear();
+        // P.begin(); // re-initialize, that fixes display problems due to electrical relais feedbacks
+        reInitializeDisplay();
         P.setIntensity(1);
         P.print(timeBuffer);
         last_clock_refresh = millis();
@@ -473,10 +559,10 @@ void loop(void)
 
   // toggle relays
   if (lastMinutes != minutes) {
-    toggleRelays();
+    R.toggle();
     lastMinutes = minutes;
   }
   lastSeconds = seconds;
 
-  loopRelays();
+  R.loop();
 }