diff --git a/src/main.cpp.bak b/src/main.cpp.bak
deleted file mode 100644
index 5b32f08..0000000
--- a/src/main.cpp.bak
+++ /dev/null
@@ -1,341 +0,0 @@
-#include "proj.h"
-//#define DEBUG
-#ifndef DEBUG
-  #define eprintf( fmt, args... )
-  #define DBGOUT(...)
-#else
-  #if DEBUGHW>0
-    #define FOO(...) __VA_ARGS__
-    #define DBGOUT dbg_string+= FOO
-    #if (DEBUGHW==2)
-      #define eprintf(fmt, args...) S.printf(fmt, ##args)
-    #elif (DEBUGHW==1 || DEBUGHW==3)
-      #define eprintf(fmt, args...) {sprintf(dbg,fmt, ##args);dbg_string+=dbg;dbg[0]=0;}
-    #endif
-  #else
-    #define eprintf( fmt, args... )
-    #define DBGOUT(...)
-  #endif
-#endif
-
-void secTick();
-#if DEBUGHW==1
-  WiFiServer dbg_server(10000);
-  WiFiClient dbg_client;
-#endif
-#ifdef STROMPREIS
-String strompreis="";
-#endif // strompreis
-Ticker uniTicker,secTicker;
-strConfig config;
-//AsyncMqttClient mq_client;                    // ThingsPeak Client
-WiFiClient thp_client;
-unsigned things_cycle;
-uint32_t a_result[9];
-uint8_t key[16];
-String things_up;
-unsigned thingspeak_watch;
-bool new_data,new_data3,ledbit,ledflag;
-unsigned first_frame;
-uint8_t dow_local,dow;
-uint8_t mon,year,mon_local;
-unsigned kwh_day_in[7];
-unsigned kwh_day_out[7];
-unsigned last_mon_in;
-unsigned last_mon_out;
-uint32_t clientId;
-unsigned prev_millis;
-int logPage=-1;
-uint8_t updates;
-String lastMonth;
-#if DEBUGHW>0
-  char dbg[128];
-  String dbg_string;
-#endif // DEBUGHW
-kwhstruct kwh_hist[7];
-bool inAPMode,mqttStatus,hwTest;
-ADC_MODE(ADC_VCC);
-
-void setup(){
-  Serial.begin(9600,SERIAL_8E1);      // Schnittstelle zu Amis-Z?er
-  Serial.setTimeout(10);              // f. readBytes in amis.cpp
-  pinMode(AP_PIN,INPUT_PULLUP);
-  #if LEDPIN
-  digitalWrite(LEDPIN,HIGH);
-  pinMode(LEDPIN, OUTPUT);
-  #endif // if LEDPIN == Serial1.txd: reroute pin function
-  #if DEBUGHW==2
-    #if DEBUG_OUTPUT==0
-      Serial.begin(115200);
-    #elif DEBUG_OUTPUT==1
-      Serial1.begin(115200);
-    #endif
-  #endif // DEBUGHW
-  #ifdef OTA
-  initOTA();
-  #endif // OTA
-  LittleFS.begin();                 // always true! SPIFF.begin does autoformat!!!
-  bool test=false;
-  File f = LittleFS.open("/index.html", "r");
-  if(f) f.close();
-  else test=true;
-  if (!test) {
-    f = LittleFS.open("/custom.css", "r");
-    if(f) f.close();
-    else test=true;
-  }
-  if (test) {                     // keine html-Files
-    serverInit(1);                // /upgrade.html als /
-    upgrade(0);
-    return;
-  }
-  serverInit(0);                  // /init.html als /
-  generalInit();
-  histInit();
-  connectToWifi();  // and MQTT and NTP
-  secTicker.attach_scheduled(1,secTick);
-  meter_init();
-  if (config.log_sys) writeEvent("INFO", "sys", "System setup completed, running", "");
-}
-
-void loop(){
-  #if DEBUGHW==1
-  if (dbg_string.length()) {          // Debug-Ausgaben TCP
-    dbg_string+="\n";
-    if (!dbg_client.connected()) dbg_client.stop();
-    if (!dbg_client) dbg_client = dbg_server.available();
-    if (dbg_client)  dbg_client.print(dbg_string);
-    dbg_string="";
-  }
-  #elif DEBUGHW==2
-  if (dbg_string.length()) {          // Debug-Ausgaben Serial
-    S.print(dbg_string);
-    dbg_string="";
-  }
-  #elif DEBUGHW==3
-  if (dbg_string.length()) {          // Debug-Ausgaben Websock
-    ws.text(clientId,dbg_string);
-    //Serial1.println(dbg_string);
-    dbg_string="";
-  }
-  #endif
-
-  #ifdef OTA
-  ArduinoOTA.handle();
-  #endif
-  if(shouldReboot){
-    secTicker.detach();
-    mqttTimer.detach();
-    if (config.log_sys) writeEvent("INFO", "sys", "System is going to reboot", "");
-    DBGOUT("Rebooting...");
-    delay(300);
-    ESP.wdtDisable();           // bootet 2x ???
-    //ESP.restart();
-    while (1)    delay(1);
-  }
-  if (config.thingspeak_aktiv && thingspeak_watch>10) {
-    if (config.log_sys) writeEvent("INFO", "mqtt", "Connection lost long time", "reboot");
-    DBGOUT("thingspeak_watch reset");
-    shouldReboot=true;
-  }
-  if (ws.count()) {      // ws-connections
-    if (new_data3) {
-      new_data3=false;
-      sendZData();
-    }
-  }
-  if (WiFi.isConnected())   amis_poll();
-  #ifdef LEDPIN
-  if (inAPMode) {
-    if (millis() > prev_millis) {
-      prev_millis=millis()+500;
-      digitalWrite(LEDPIN,digitalRead(LEDPIN)^1);
-    }
-  }
-  else {
-    if (ledflag && ledbit) {
-        digitalWrite(LEDPIN,LOW);
-    }
-  }
-  #endif
-  if (hwTest) {
-    for (unsigned i=0;i < 200; i++)  {
-      Serial.write(i);
-      delay(1);
-    }
-  }
-  if (logPage >=0) {
-    sendEventLog(clientId,logPage);
-    logPage=-1;
-  }
-  delay(10);
-  #ifdef LEDPIN
-  if (ledflag) {
-    ledflag=false;
-    digitalWrite(LEDPIN,HIGH);
-  }
-  #endif
-}
-
-void writeHistFileIn(int x, long val) {
-  DBGOUT("hist_in "+String(x)+" "+String(val)+"\n");
-  File f = LittleFS.open("/hist_in"+String(x), "w");
-  if(f) {
-    f.print(val);
-    f.close();
-  }
-}
-void writeHistFileOut(int x, long val) {
-  DBGOUT("hist_out "+String(x)+" "+String(val)+"\n");
-  File f = LittleFS.open("/hist_out"+String(x), "w");
-  if(f) {
-    f.print(val);
-    f.close();
-  }
-}
-
-void writeMonthFile(uint8_t y,uint8_t m) {
-  String s=String(m);
-  if (s.length()<2) s="0"+s;
-  s=String(y)+s;
-  eprintf("F: %u %u %s",year, mon, s.c_str());
-  File f = LittleFS.open("/monate", "a");
-  f.print(s+" ");
-  f.print(a_result[0]);
-  f.print(" ");
-  f.print(a_result[1]);
-  f.print('\n');          // f.println würde \r anfügen!
-  f.close();
-}
-
-void secTick() {
-  things_cycle++;
-  #ifdef LEDPIN
-  if (things_cycle % 4==0) ledflag=true;
-  #endif
-  if (ws.count()) {        // ws-connections
-    if (first_frame==0) {
-      sendZDataWait();
-    }
-  }
-  if (valid==5){
-    if (first_frame==3) { // 1. Zählerdatensatz nach reset
-      first_frame=2;      // nächste action beim nächsten secTick
-      int x=dow-2;        // gestern
-      if (x < 0) x=6;
-      if (x>6) x=0;
-      if (kwh_day_in[x] ==0) {          // gestern noch keine Werte: momentanen Stand wegschreiben
-        kwh_day_in[x]=a_result[0];      // 1.8.0 Bezug
-        writeHistFileIn(x,a_result[0]);
-      }
-      if (kwh_day_out[x] ==0) {         // gestern noch keine Werte: momentanen Stand wegschreiben
-        kwh_day_out[x]=a_result[1];     // 2.8.0 Lieferung
-        writeHistFileOut(x,a_result[1]);
-      }
-      dow_local=dow;
-      String s=String(mon);
-      if (s.length()<2) s="0"+s;
-      s=String(year)+s;
-      if (s.compareTo(lastMonth)!=0) writeMonthFile(year,mon);  // Monat noch nicht im File
-      mon_local=mon;
-    }
-    else if (first_frame==2) {        // Wochentabelle Energie erzeugen
-      int x=dow-2;                    // gestern, idx ab 0
-      if (x < 0) x=6;
-      for (int i=0; i<7;i++) {
-        int vg=x-1; if (vg <0) vg=6;
-        if ((kwh_day_in[x] > kwh_day_in[vg]) && kwh_day_in[vg]) {
-          kwh_hist[i].kwh_in = kwh_day_in[x] - kwh_day_in[vg];
-          kwh_hist[i].dow = x;
-        }
-        else kwh_hist[i].kwh_in = 0;
-        if ((kwh_day_out[x] > kwh_day_out[vg]) && kwh_day_out[vg]) {
-          kwh_hist[i].kwh_out = kwh_day_out[x] - kwh_day_out[vg];
-          kwh_hist[i].dow = x;
-        }
-        else kwh_hist[i].kwh_out = 0;
-        x--; if (x <0) x=6;
-      }
-      updates=3;                      // Trigger WebClients Update
-      first_frame=1;                  // Tabelle erzeugt, initialisierung abgeschlossen
-    }
-    if (dow_local != dow) {           // Tageswechsel, dow 1..7
-      int x=dow-2;                    // gestern, idx ab 0
-      if (x < 0) x=6;                 // x zeigt auf gestern
-      kwh_day_in[x]=a_result[0];      // 1.8.0
-      writeHistFileIn(x,a_result[0]);
-      kwh_day_out[x]=a_result[1];     // 2.8.0
-      writeHistFileOut(x,a_result[1]);
-      dow_local=dow;
-      if (mon_local != mon) {         // Monatswechsel
-        writeMonthFile(year,mon);
-        mon_local=mon;
-      }
-      first_frame=2;                  // Wochen- + Monatstabelle Energie neu erzeugen
-    }
-  }
-
-  /// Thingspeak aktualisieren
-  if (config.thingspeak_aktiv && things_cycle >= config.thingspeak_iv && new_data && valid==5) {
-    things_cycle=0;
-    thingspeak_watch++;
-    new_data = false;
-
-    thp_client.stop();
-    if (thp_client.connect("api.thingspeak.com", 80)) {
-      String data="api_key=" + String(config.write_api_key);
-    #ifdef STROMPREIS
-      for (unsigned i=0;i<7;i++)
-        data += "&field" + (String(i+1))+"="+(String)(a_result[i]);
-        data += "&field8="+strompreis;
-    #else
-      for (unsigned i=0;i<8;i++)
-        data += "&field" + (String(i+1))+"="+(String)(a_result[i]);
-    #endif // strompreis
-      thp_client.println( "POST /update HTTP/1.1" );
-      thp_client.println( "Host: api.thingspeak.com" );
-      thp_client.println( "Connection: close" );
-      thp_client.println( "Content-Type: application/x-www-form-urlencoded" );
-      thp_client.println( "Content-Length: " + String( data.length() ) );
-      thp_client.println();
-      thp_client.println( data );
-      //DBGOUT(data+"\n");
-      things_up=timecode;
-    }
-    else things_up="failed";
-    thingspeak_watch=0;
-  }
-  else {
-    if (updates){
-      switch (updates) {
-        case 2:
-          histUpdate();                   // Wochentabelle Energie senden
-          break;
-        case 1:
-          monthUpdate();                   // Wochentabelle Energie senden
-          break;
-      }
-      updates--;
-    }
-  }
-  ws.cleanupClients();   // beendete Webclients nicht mehr updaten
-}
-
-void  writeEvent(String type, String src, String desc, String data) {
-  DynamicJsonBuffer jsonBuffer;
-  JsonObject &root = jsonBuffer.createObject();
-  root[F("type")] = type;
-  root[F("src")] = src;
-  root[F("desc")] = desc;
-  root[F("data")] = data;
-  root[F("time")] = timecode;
-  File eventlog = LittleFS.open("/eventlog.json", "a");
-  if(eventlog.size() > 50000) {
-    eventlog.close();
-    LittleFS.remove("/eventlog.json");
-    File eventlog = LittleFS.open("/eventlog.json", "a");
-  }
-  root.printTo(eventlog);
-  eventlog.print("\n");
-  eventlog.close();
-}