cfg.cpp

#include "wled.h"

/*
 * Serializes and parses the cfg.json and wsec.json settings files, stored in internal FS.
 * The structure of the JSON is not to be considered an official API and may change without notice.
 */

//simple macro for ArduinoJSON's or syntax
#define CJSON(a,b) a = b | a

void getStringFromJson(char* dest, const char* src, size_t len) {
  if (src != nullptr) strlcpy(dest, src, len);
}

void deserializeConfig() {
  bool fromeep = false;
  bool success = deserializeConfigSec();
  if (!success) { //if file does not exist, try reading from EEPROM
    deEEPSettings();
    fromeep = true;
  }

  DynamicJsonDocument doc(JSON_BUFFER_SIZE);

  DEBUG_PRINTLN(F("Reading settings from /cfg.json..."));

  success = readObjectFromFile("/cfg.json", nullptr, &doc);
  if (!success) { //if file does not exist, try reading from EEPROM
    if (!fromeep) deEEPSettings();
    return;
  }

  //deserializeJson(doc, json);

  //int rev_major = doc[F("rev")][0]; // 1
  //int rev_minor = doc[F("rev")][1]; // 0

  //long vid = doc[F("vid")]; // 2010020

  JsonObject id = doc[F("id")];
  getStringFromJson(cmDNS, id[F("mdns")], 33);
  getStringFromJson(serverDescription, id[F("name")], 33);
  getStringFromJson(alexaInvocationName, id[F("inv")], 33);

  JsonObject nw_ins_0 = doc["nw"][F("ins")][0];
  getStringFromJson(clientSSID, nw_ins_0[F("ssid")], 33);
  //int nw_ins_0_pskl = nw_ins_0[F("pskl")];
  //The WiFi PSK is normally not contained in the regular file for security reasons.
  //If it is present however, we will use it
  getStringFromJson(clientPass, nw_ins_0["psk"], 65);

  JsonArray nw_ins_0_ip = nw_ins_0[F("ip")];
  JsonArray nw_ins_0_gw = nw_ins_0[F("gw")];
  JsonArray nw_ins_0_sn = nw_ins_0[F("sn")];

  for (byte i = 0; i < 4; i++) {
    CJSON(staticIP[i], nw_ins_0_ip[i]);
    CJSON(staticGateway[i], nw_ins_0_gw[i]);
    CJSON(staticSubnet[i], nw_ins_0_sn[i]);
  }

  JsonObject ap = doc[F("ap")];
  getStringFromJson(apSSID, ap[F("ssid")], 33);
  getStringFromJson(apPass, ap["psk"] , 65); //normally not present due to security
  //int ap_pskl = ap[F("pskl")];

  CJSON(apChannel, ap[F("chan")]);
  if (apChannel > 13 || apChannel < 1) apChannel = 1;

  CJSON(apHide, ap[F("hide")]);
  if (apHide > 1) apHide = 1;

  CJSON(apBehavior, ap[F("behav")]);

  /*
  JsonArray ap_ip = ap[F("ip")];
  for (byte i = 0; i < 4; i++) {
    apIP[i] = ap_ip;
  }*/

  noWifiSleep = doc[F("wifi")][F("sleep")] | !noWifiSleep; // inverted
  noWifiSleep = !noWifiSleep;
  //int wifi_phy = doc[F("wifi")][F("phy")]; //force phy mode n?

  JsonObject hw = doc[F("hw")];

  JsonObject hw_led = hw[F("led")];
  CJSON(ledCount, hw_led[F("total")]);
  if (ledCount > MAX_LEDS) ledCount = MAX_LEDS;

  CJSON(strip.ablMilliampsMax, hw_led[F("maxpwr")]);
  CJSON(strip.milliampsPerLed, hw_led[F("ledma")]);
  CJSON(strip.reverseMode, hw_led[F("rev")]);
  CJSON(strip.rgbwMode, hw_led[F("rgbwm")]);

  JsonObject hw_led_ins_0 = hw_led[F("ins")][0];
  //bool hw_led_ins_0_en = hw_led_ins_0[F("en")]; // true
  //int hw_led_ins_0_start = hw_led_ins_0[F("start")]; // 0
  //int hw_led_ins_0_len = hw_led_ins_0[F("len")]; // 1200

  //int hw_led_ins_0_pin_0 = hw_led_ins_0[F("pin")][0]; // 2

  strip.setColorOrder(hw_led_ins_0[F("order")]);
  //bool hw_led_ins_0_rev = hw_led_ins_0[F("rev")]; // false
  skipFirstLed = hw_led_ins_0[F("skip")]; // 0
  useRGBW = (hw_led_ins_0[F("type")] == TYPE_SK6812_RGBW);

  JsonObject hw_btn_ins_0 = hw[F("btn")][F("ins")][0];
  buttonEnabled = hw_btn_ins_0[F("en")] | buttonEnabled;

  //int hw_btn_ins_0_pin_0 = hw_btn_ins_0[F("pin")][0]; // 0

  JsonArray hw_btn_ins_0_macros = hw_btn_ins_0[F("macros")];
  CJSON(macroButton, hw_btn_ins_0_macros[0]);
  CJSON(macroLongPress,hw_btn_ins_0_macros[1]);
  CJSON(macroDoublePress, hw_btn_ins_0_macros[2]);

  //int hw_btn_ins_0_type = hw_btn_ins_0[F("type")]; // 0

  //int hw_ir_pin = hw[F("ir")][F("pin")]; // 4
  CJSON(irEnabled, hw[F("ir")][F("type")]); // 0

  //int hw_relay_pin = hw[F("relay")][F("pin")]; // 12
  //bool hw_relay_rev = hw[F("relay")][F("rev")]; // false

  //int hw_status_pin = hw[F("status")][F("pin")]; // -1

  JsonObject light = doc[F("light")];
  CJSON(briMultiplier, light[F("scale-bri")]);
  CJSON(strip.paletteBlend, light[F("pal-mode")]);

  float light_gc_bri = light[F("gc")]["bri"];
  float light_gc_col = light[F("gc")][F("col")]; // 2.8
  if (light_gc_bri > 1.5) strip.gammaCorrectBri = true;
  else if (light_gc_bri > 0.5) strip.gammaCorrectBri = false;
  if (light_gc_col > 1.5) strip.gammaCorrectCol = true;
  else if (light_gc_col > 0.5) strip.gammaCorrectCol = false;

  JsonObject light_tr = light[F("tr")];
  CJSON(fadeTransition, light_tr[F("mode")]);
  int tdd = light_tr[F("dur")] | -1;
  if (tdd >= 0) transitionDelayDefault = tdd * 100;
  CJSON(strip.paletteFade, light_tr[F("pal")]);

  JsonObject light_nl = light["nl"];
  CJSON(nightlightMode, light_nl[F("mode")]);
  CJSON(nightlightDelayMinsDefault, light_nl[F("dur")]);
  nightlightDelayMins = nightlightDelayMinsDefault;

  CJSON(nightlightTargetBri, light_nl[F("tbri")]);
  CJSON(macroNl, light_nl[F("macro")]);

  JsonObject def = doc[F("def")];
  CJSON(bootPreset, def[F("ps")]);
  CJSON(turnOnAtBoot, def["on"]); // true
  CJSON(briS, def["bri"]); // 128
  if (briS == 0) briS = 255;

  JsonObject def_cy = def[F("cy")];
  CJSON(presetCyclingEnabled, def_cy["on"]);

  CJSON(presetCycleMin, def_cy[F("range")][0]);
  CJSON(presetCycleMax, def_cy[F("range")][1]);

  tdd = def_cy[F("dur")] | -1;
  if (tdd > 0) presetCycleTime = tdd;

  JsonObject interfaces = doc["if"];

  JsonObject if_sync = interfaces[F("sync")];
  CJSON(udpPort, if_sync[F("port0")]); // 21324
  CJSON(udpPort2, if_sync[F("port1")]); // 65506

  JsonObject if_sync_recv = if_sync[F("recv")];
  CJSON(receiveNotificationBrightness, if_sync_recv["bri"]);
  CJSON(receiveNotificationColor, if_sync_recv[F("col")]);
  CJSON(receiveNotificationEffects, if_sync_recv[F("fx")]);
  receiveNotifications = (receiveNotificationBrightness || receiveNotificationColor || receiveNotificationEffects);

  JsonObject if_sync_send = if_sync[F("send")];
  CJSON(notifyDirectDefault, if_sync_send[F("dir")]);
  notifyDirect = notifyDirectDefault;
  CJSON(notifyButton, if_sync_send[F("btn")]);
  CJSON(notifyAlexa, if_sync_send[F("va")]);
  CJSON(notifyHue, if_sync_send[F("hue")]);
  CJSON(notifyMacro, if_sync_send[F("macro")]);
  CJSON(notifyTwice, if_sync_send[F("twice")]);

  JsonObject if_live = interfaces[F("live")];
  CJSON(receiveDirect, if_live[F("en")]);
  CJSON(e131Port, if_live[F("port")]); // 5568
  CJSON(e131Multicast, if_live[F("mc")]);

  JsonObject if_live_dmx = if_live[F("dmx")];
  CJSON(e131Universe, if_live_dmx[F("uni")]);
  CJSON(e131SkipOutOfSequence, if_live_dmx[F("seqskip")]);
  CJSON(DMXAddress, if_live_dmx[F("addr")]);
  CJSON(DMXMode, if_live_dmx[F("mode")]);

  tdd = if_live[F("timeout")] | -1;
  if (tdd >= 0) realtimeTimeoutMs = tdd * 100;
  CJSON(arlsForceMaxBri, if_live[F("maxbri")]);
  CJSON(arlsDisableGammaCorrection, if_live[F("no-gc")]); // false
  CJSON(arlsOffset, if_live[F("offset")]); // 0

  CJSON(alexaEnabled, interfaces[F("va")][F("alexa")]); // false

  CJSON(macroAlexaOn, interfaces[F("va")][F("macros")][0]);
  CJSON(macroAlexaOff, interfaces[F("va")][F("macros")][1]);

  const char* apikey = interfaces[F("blynk")][F("token")] | "Hidden";
  tdd = strnlen(apikey, 36);
  if (tdd > 20 || tdd == 0)
    getStringFromJson(blynkApiKey, apikey, 36); //normally not present due to security

  JsonObject if_mqtt = interfaces[F("mqtt")];
  CJSON(mqttEnabled, if_mqtt[F("en")]);
  getStringFromJson(mqttServer, if_mqtt[F("broker")], 33);
  CJSON(mqttPort, if_mqtt[F("port")]); // 1883
  getStringFromJson(mqttUser, if_mqtt[F("user")], 41);
  getStringFromJson(mqttPass, if_mqtt["psk"], 41); //normally not present due to security
  getStringFromJson(mqttClientID, if_mqtt[F("cid")], 41);

  getStringFromJson(mqttDeviceTopic, if_mqtt[F("topics")][F("device")], 33); // "wled/test"
  getStringFromJson(mqttGroupTopic, if_mqtt[F("topics")][F("group")], 33); // ""

  JsonObject if_hue = interfaces[F("hue")];
  CJSON(huePollingEnabled, if_hue[F("en")]);
  CJSON(huePollLightId, if_hue[F("id")]);
  tdd = if_hue[F("iv")] | -1;
  if (tdd >= 2) huePollIntervalMs = tdd * 100;

  JsonObject if_hue_recv = if_hue[F("recv")];
  CJSON(hueApplyOnOff, if_hue_recv["on"]);
  CJSON(hueApplyBri, if_hue_recv["bri"]);
  CJSON(hueApplyColor, if_hue_recv[F("col")]);

  JsonArray if_hue_ip = if_hue[F("ip")];

  for (byte i = 0; i < 4; i++)
    CJSON(hueIP[i], if_hue_ip[i]);

  JsonObject if_ntp = interfaces[F("ntp")];
  CJSON(ntpEnabled, if_ntp[F("en")]);
  getStringFromJson(ntpServerName, if_ntp[F("host")], 33); // "1.wled.pool.ntp.org"
  CJSON(currentTimezone, if_ntp[F("tz")]);
  CJSON(utcOffsetSecs, if_ntp[F("offset")]);
  CJSON(useAMPM, if_ntp[F("ampm")]);

  JsonObject ol = doc[F("ol")];
  CJSON(overlayDefault ,ol[F("clock")]); // 0
  CJSON(countdownMode, ol[F("cntdwn")]);
  overlayCurrent = overlayDefault;

  CJSON(overlayMin, ol[F("min")]);
  CJSON(overlayMax, ol[F("max")]);
  CJSON(analogClock12pixel, ol[F("o12pix")]);
  CJSON(analogClock5MinuteMarks, ol[F("o5m")]);
  CJSON(analogClockSecondsTrail, ol[F("osec")]);

  //timed macro rules
  JsonObject tm = doc[F("timers")];
  JsonObject cntdwn = tm[F("cntdwn")];
  JsonArray cntdwn_goal = cntdwn[F("goal")];
  CJSON(countdownYear,  cntdwn_goal[0]);
  CJSON(countdownMonth, cntdwn_goal[1]);
  CJSON(countdownDay,   cntdwn_goal[2]);
  CJSON(countdownHour,  cntdwn_goal[3]);
  CJSON(countdownMin,   cntdwn_goal[4]);
  CJSON(countdownSec,   cntdwn_goal[5]);
  CJSON(macroCountdown, cntdwn[F("macro")]);

  JsonArray timers = tm[F("ins")];
  uint8_t it = 0;
  for (JsonObject timer : timers) {
    if (it > 7) break;
    CJSON(timerHours[it], timer[F("hour")]);
    CJSON(timerMinutes[it], timer[F("min")]);
    CJSON(timerMacro[it], timer[F("macro")]);

    byte dowPrev =  timerWeekday[it];
    //note: act is currently only 0 or 1.
    //the reason we are not using bool is that the on-disk type in 0.11.0 was already int
    int actPrev = timerWeekday[it] & 0x01;
    CJSON(timerWeekday[it], timer[F("dow")]);
    if (timerWeekday[it] != dowPrev) { //present in JSON
      timerWeekday[it] <<= 1; //add active bit
      int act = timer[F("en")] | actPrev;
      if (act) timerWeekday[it]++;
    }

    it++;
  }

  JsonObject ota = doc["ota"];
  const char* pwd = ota["psk"]; //normally not present due to security

  bool pwdCorrect = !otaLock; //always allow access if ota not locked
  if (pwd != nullptr && strncmp(otaPass, pwd, 33) == 0) pwdCorrect = true;

  if (pwdCorrect) { //only accept these values from cfg.json if ota is unlocked (else from wsec.json)
    CJSON(otaLock, ota[F("lock")]);
    CJSON(wifiLock, ota[F("lock-wifi")]);
    CJSON(aOtaEnabled, ota[F("aota")]);
    getStringFromJson(otaPass, pwd, 33); //normally not present due to security
  }

  #ifdef WLED_ENABLE_DMX
  JsonObject dmx = doc["dmx"];
  CJSON(DMXChannels, dmx[F("chan")]);
  CJSON(DMXGap,dmx[F("gap")]);
  CJSON(DMXStart, dmx[F("start")]);
  CJSON(DMXStartLED,dmx[F("start-led")]);

  JsonArray dmx_fixmap = dmx.createNestedArray("fixmap");
  it = 0;
  for (int i : dmx_fixmap) {
    if (it > 14) break;
    DMXFixtureMap[i] = i;
    it++;
  }
  #endif

  JsonObject usermods_settings = doc["um"];
  usermods.readFromConfig(usermods_settings);
}

void serializeConfig() {
  serializeConfigSec();

  DEBUG_PRINTLN(F("Writing settings to /cfg.json..."));

  DynamicJsonDocument doc(JSON_BUFFER_SIZE);

  //{ //scope this to reduce stack size
  JsonArray rev = doc.createNestedArray("rev");
  rev.add(1); //major settings revision
  rev.add(0); //minor settings revision

  doc[F("vid")] = VERSION;

  JsonObject id = doc.createNestedObject("id");
  id[F("mdns")] = cmDNS;
  id[F("name")] = serverDescription;
  id[F("inv")] = alexaInvocationName;

  JsonObject nw = doc.createNestedObject("nw");

  JsonArray nw_ins = nw.createNestedArray("ins");

  JsonObject nw_ins_0 = nw_ins.createNestedObject();
  nw_ins_0[F("ssid")] = clientSSID;
  nw_ins_0[F("pskl")] = strlen(clientPass);

  JsonArray nw_ins_0_ip = nw_ins_0.createNestedArray("ip");
  JsonArray nw_ins_0_gw = nw_ins_0.createNestedArray("gw");
  JsonArray nw_ins_0_sn = nw_ins_0.createNestedArray("sn");

  for (byte i = 0; i < 4; i++) {
    nw_ins_0_ip.add(staticIP[i]);
    nw_ins_0_gw.add(staticGateway[i]);
    nw_ins_0_sn.add(staticSubnet[i]);
  }

  JsonObject ap = doc.createNestedObject("ap");
  ap[F("ssid")] = apSSID;
  ap[F("pskl")] = strlen(apPass);
  ap[F("chan")] = apChannel;
  ap[F("behav")] = apBehavior;

  JsonArray ap_ip = ap.createNestedArray("ip");
  ap_ip.add(4);
  ap_ip.add(3);
  ap_ip.add(2);
  ap_ip.add(1);

  JsonObject wifi = doc.createNestedObject("wifi");
  wifi[F("sleep")] = !noWifiSleep;
  wifi[F("phy")] = 1;

  JsonObject hw = doc.createNestedObject("hw");

  JsonObject hw_led = hw.createNestedObject("led");
  hw_led[F("total")] = ledCount;
  hw_led[F("maxpwr")] = strip.ablMilliampsMax;
  hw_led[F("ledma")] = strip.milliampsPerLed;
  hw_led[F("rev")] = strip.reverseMode;
  hw_led[F("rgbwm")] = strip.rgbwMode;

  JsonArray hw_led_ins = hw_led.createNestedArray("ins");

  JsonObject hw_led_ins_0 = hw_led_ins.createNestedObject();
  hw_led_ins_0[F("en")] = true;
  hw_led_ins_0[F("start")] = 0;
  hw_led_ins_0[F("len")] = ledCount;
  JsonArray hw_led_ins_0_pin = hw_led_ins_0.createNestedArray("pin");
  hw_led_ins_0_pin.add(LEDPIN);
  #ifdef DATAPIN
  hw_led_ins_0_pin.add(DATAPIN);
  #endif
  hw_led_ins_0[F("order")] = strip.getColorOrder();
  hw_led_ins_0[F("rev")] = false;
  hw_led_ins_0[F("skip")] = skipFirstLed ? 1 : 0;

  //this is very crude and temporary
  byte ledType = TYPE_WS2812_RGB;
  if (useRGBW) ledType = TYPE_SK6812_RGBW;
  #ifdef USE_WS2801
    ledType = TYPE_WS2801;
  #endif
  #ifdef USE_APA102
    ledType = TYPE_APA102;
  #endif
  #ifdef USE_LPD8806
    ledType = TYPE_LPD8806;
  #endif
  #ifdef USE_P9813
    ledType = TYPE_P9813;
  #endif
  #ifdef USE_TM1814
    ledType = TYPE_TM1814;
  #endif

  hw_led_ins_0[F("type")] = ledType;

  JsonObject hw_btn = hw.createNestedObject("btn");

  JsonArray hw_btn_ins = hw_btn.createNestedArray("ins");

  #if defined(BTNPIN) && BTNPIN > -1
  JsonObject hw_btn_ins_0 = hw_btn_ins.createNestedObject();
  hw_btn_ins_0[F("type")] = (buttonEnabled) ? BTN_TYPE_PUSH : BTN_TYPE_NONE;

  JsonArray hw_btn_ins_0_pin = hw_btn_ins_0.createNestedArray("pin");
  hw_btn_ins_0_pin.add(BTNPIN);

  JsonArray hw_btn_ins_0_macros = hw_btn_ins_0.createNestedArray("macros");
  hw_btn_ins_0_macros.add(macroButton);
  hw_btn_ins_0_macros.add(macroLongPress);
  hw_btn_ins_0_macros.add(macroDoublePress);
  #endif

  #if defined(IRPIN) && IRPIN > -1
  JsonObject hw_ir = hw.createNestedObject("ir");
  hw_ir[F("pin")] = IRPIN;
  hw_ir[F("type")] = irEnabled;              // the byte 'irEnabled' does contain the IR-Remote Type ( 0=disabled )
  #endif

  #if defined(RLYPIN) && RLYPIN > -1
  JsonObject hw_relay = hw.createNestedObject("relay");
  hw_relay[F("pin")] = RLYPIN;
  hw_relay[F("rev")] = (RLYMDE) ? false : true;
  JsonObject hw_status = hw.createNestedObject("status");
  hw_status[F("pin")] = -1;
  #endif

  JsonObject light = doc.createNestedObject("light");
  light[F("scale-bri")] = briMultiplier;
  light[F("pal-mode")] = strip.paletteBlend;

  JsonObject light_gc = light.createNestedObject("gc");
  light_gc["bri"] = (strip.gammaCorrectBri) ? 2.8 : 1.0;
  light_gc[F("col")] = (strip.gammaCorrectCol) ? 2.8 : 1.0;

  JsonObject light_tr = light.createNestedObject("tr");
  light_tr[F("mode")] = fadeTransition;
  light_tr[F("dur")] = transitionDelayDefault / 100;
  light_tr[F("pal")] = strip.paletteFade;

  JsonObject light_nl = light.createNestedObject("nl");
  light_nl[F("mode")] = nightlightMode;
  light_nl[F("dur")] = nightlightDelayMinsDefault;
  light_nl[F("tbri")] = nightlightTargetBri;
  light_nl[F("macro")] = macroNl;

  JsonObject def = doc.createNestedObject("def");
  def[F("ps")] = bootPreset;
  def["on"] = turnOnAtBoot;
  def["bri"] = briS;

  //to be removed once preset cycles are presets
  if (saveCurrPresetCycConf) {
    JsonObject def_cy = def.createNestedObject("cy");
    def_cy["on"] = presetCyclingEnabled;

    JsonArray def_cy_range = def_cy.createNestedArray("range");
    def_cy_range.add(presetCycleMin);
    def_cy_range.add(presetCycleMax);
    def_cy[F("dur")] = presetCycleTime;
  }

  JsonObject interfaces = doc.createNestedObject("if");

  JsonObject if_sync = interfaces.createNestedObject("sync");
  if_sync[F("port0")] = udpPort;
  if_sync[F("port1")] = udpPort2;

  JsonObject if_sync_recv = if_sync.createNestedObject("recv");
  if_sync_recv["bri"] = receiveNotificationBrightness;
  if_sync_recv[F("col")] = receiveNotificationColor;
  if_sync_recv[F("fx")] = receiveNotificationEffects;

  JsonObject if_sync_send = if_sync.createNestedObject("send");
  if_sync_send[F("dir")] = notifyDirect;
  if_sync_send[F("btn")] = notifyButton;
  if_sync_send[F("va")] = notifyAlexa;
  if_sync_send[F("hue")] = notifyHue;
  if_sync_send[F("macro")] = notifyMacro;
  if_sync_send[F("twice")] = notifyTwice;

  JsonObject if_live = interfaces.createNestedObject("live");
  if_live[F("en")] = receiveDirect;
  if_live[F("port")] = e131Port;
  if_live[F("mc")] = e131Multicast;

  JsonObject if_live_dmx = if_live.createNestedObject("dmx");
  if_live_dmx[F("uni")] = e131Universe;
  if_live_dmx[F("seqskip")] = e131SkipOutOfSequence;
  if_live_dmx[F("addr")] = DMXAddress;
  if_live_dmx[F("mode")] = DMXMode;
  if_live[F("timeout")] = realtimeTimeoutMs / 100;
  if_live[F("maxbri")] = arlsForceMaxBri;
  if_live[F("no-gc")] = arlsDisableGammaCorrection;
  if_live[F("offset")] = arlsOffset;

  JsonObject if_va = interfaces.createNestedObject("va");
  if_va[F("alexa")] = alexaEnabled;

  JsonArray if_va_macros = if_va.createNestedArray("macros");
  if_va_macros.add(macroAlexaOn);
  if_va_macros.add(macroAlexaOff);
  JsonObject if_blynk = interfaces.createNestedObject("blynk");
  if_blynk[F("token")] = strlen(blynkApiKey) ? "Hidden":"";

  JsonObject if_mqtt = interfaces.createNestedObject("mqtt");
  if_mqtt[F("en")] = mqttEnabled;
  if_mqtt[F("broker")] = mqttServer;
  if_mqtt[F("port")] = mqttPort;
  if_mqtt[F("user")] = mqttUser;
  if_mqtt[F("pskl")] = strlen(mqttPass);
  if_mqtt[F("cid")] = mqttClientID;

  JsonObject if_mqtt_topics = if_mqtt.createNestedObject("topics");
  if_mqtt_topics[F("device")] = mqttDeviceTopic;
  if_mqtt_topics[F("group")] = mqttGroupTopic;

  JsonObject if_hue = interfaces.createNestedObject("hue");
  if_hue[F("en")] = huePollingEnabled;
  if_hue[F("id")] = huePollLightId;
  if_hue[F("iv")] = huePollIntervalMs / 100;

  JsonObject if_hue_recv = if_hue.createNestedObject("recv");
  if_hue_recv["on"] = hueApplyOnOff;
  if_hue_recv["bri"] = hueApplyBri;
  if_hue_recv[F("col")] = hueApplyColor;

  JsonArray if_hue_ip = if_hue.createNestedArray("ip");
  for (byte i = 0; i < 4; i++) {
    if_hue_ip.add(hueIP[i]);
  }

  JsonObject if_ntp = interfaces.createNestedObject("ntp");
  if_ntp[F("en")] = ntpEnabled;
  if_ntp[F("host")] = ntpServerName;
  if_ntp[F("tz")] = currentTimezone;
  if_ntp[F("offset")] = utcOffsetSecs;
  if_ntp[F("ampm")] = useAMPM;

  JsonObject ol = doc.createNestedObject("ol");
  ol[F("clock")] = overlayDefault;
  ol[F("cntdwn")] = countdownMode;

  ol[F("min")] = overlayMin;
  ol[F("max")] = overlayMax;
  ol[F("o12pix")] = analogClock12pixel;
  ol[F("o5m")] = analogClock5MinuteMarks;
  ol[F("osec")] = analogClockSecondsTrail;

  JsonObject timers = doc.createNestedObject("timers");

  JsonObject cntdwn = timers.createNestedObject("cntdwn");
  JsonArray goal = cntdwn.createNestedArray("goal");
  goal.add(countdownYear); goal.add(countdownMonth); goal.add(countdownDay);
  goal.add(countdownHour); goal.add(countdownMin); goal.add(countdownSec);
  cntdwn[F("macro")] = macroCountdown;

  JsonArray timers_ins = timers.createNestedArray("ins");

  for (byte i = 0; i < 8; i++) {
    if (timerMacro[i] == 0 && timerHours[i] == 0 && timerMinutes[i] == 0) continue;
    JsonObject timers_ins0 = timers_ins.createNestedObject();
    timers_ins0[F("en")] = (timerWeekday[i] & 0x01);
    timers_ins0[F("hour")] = timerHours[i];
    timers_ins0[F("min")] = timerMinutes[i];
    timers_ins0[F("macro")] = timerMacro[i];
    timers_ins0[F("dow")] = timerWeekday[i] >> 1;
  }

  JsonObject ota = doc.createNestedObject("ota");
  ota[F("lock")] = otaLock;
  ota[F("lock-wifi")] = wifiLock;
  ota[F("pskl")] = strlen(otaPass);
  ota[F("aota")] = aOtaEnabled;

  #ifdef WLED_ENABLE_DMX
  JsonObject dmx = doc.createNestedObject("dmx");
  dmx[F("chan")] = DMXChannels;
  dmx[F("gap")] = DMXGap;
  dmx[F("start")] = DMXStart;
  dmx[F("start-led")] = DMXStartLED;

  JsonArray dmx_fixmap = dmx.createNestedArray("fixmap");
  for (byte i = 0; i < 15; i++)
    dmx_fixmap.add(DMXFixtureMap[i]);
  #endif
  //}

  JsonObject usermods_settings = doc.createNestedObject("um");
  usermods.addToConfig(usermods_settings);

  File f = WLED_FS.open("/cfg.json", "w");
  if (f) serializeJson(doc, f);
  f.close();
}

//settings in /wsec.json, not accessible via webserver, for passwords and tokens
bool deserializeConfigSec() {
  DEBUG_PRINTLN(F("Reading settings from /wsec.json..."));

  DynamicJsonDocument doc(JSON_BUFFER_SIZE);

  bool success = readObjectFromFile("/wsec.json", nullptr, &doc);
  if (!success) return false;

  JsonObject nw_ins_0 = doc["nw"][F("ins")][0];
  getStringFromJson(clientPass, nw_ins_0["psk"], 65);

  JsonObject ap = doc[F("ap")];
  getStringFromJson(apPass, ap["psk"] , 65);

  JsonObject interfaces = doc["if"];

  const char* apikey = interfaces["blynk"][F("token")] | "Hidden";
  int tdd = strnlen(apikey, 36);
  if (tdd > 20 || tdd == 0)
    getStringFromJson(blynkApiKey, apikey, 36);

  JsonObject if_mqtt = interfaces[F("mqtt")];
  getStringFromJson(mqttPass, if_mqtt["psk"], 41);

  getStringFromJson(hueApiKey, interfaces[F("hue")][F("key")], 47);

  JsonObject ota = doc["ota"];
  getStringFromJson(otaPass, ota[F("pwd")], 33);
  CJSON(otaLock, ota[F("lock")]);
  CJSON(wifiLock, ota[F("lock-wifi")]);
  CJSON(aOtaEnabled, ota[F("aota")]);

  return true;
}

void serializeConfigSec() {
  DEBUG_PRINTLN(F("Writing settings to /wsec.json..."));

  DynamicJsonDocument doc(JSON_BUFFER_SIZE);

  JsonObject nw = doc.createNestedObject("nw");

  JsonArray nw_ins = nw.createNestedArray("ins");

  JsonObject nw_ins_0 = nw_ins.createNestedObject();
  nw_ins_0["psk"] = clientPass;

  JsonObject ap = doc.createNestedObject("ap");
  ap["psk"] = apPass;

  JsonObject interfaces = doc.createNestedObject("if");
  JsonObject if_blynk = interfaces.createNestedObject("blynk");
  if_blynk[F("token")] = blynkApiKey;
  JsonObject if_mqtt = interfaces.createNestedObject("mqtt");
  if_mqtt["psk"] = mqttPass;
  JsonObject if_hue = interfaces.createNestedObject("hue");
  if_hue[F("key")] = hueApiKey;

  JsonObject ota = doc.createNestedObject("ota");
  ota[F("pwd")] = otaPass;
  ota[F("lock")] = otaLock;
  ota[F("lock-wifi")] = wifiLock;
  ota[F("aota")] = aOtaEnabled;

  File f = WLED_FS.open("/wsec.json", "w");
  if (f) serializeJson(doc, f);
  f.close();
}