Storing Generic Pulse Counter Values ​​in the RTC DS1307 SRAM

[rapid32]

Hello!

I'm looking for an elegant solution to the problem of counting pulses on an ESP8266 device after power loss.

The three counter values ​​are not persisted upon cold restart, power off, or firmware upload, but are persisted (recovered) after a warn reset or processor deep freeze (Plugin Generic - Pulse Counter).

I would like to propose using the 56 bytes of SRAM memory of the RTC DS1307 chip to store the Plugin Generic - Pulse Counter values.

At the moment, an alternative solution is to use a PCF8583 with different firmware.

[tonhuisman]

I have an open PR #5382 that enables to store (numeric) data in an external EEPROM or FRAM module. This hasn't gotten the attention it deserves, I know, but that has to do with me 'only' being involved in my spare time, next to a full-time development job 😅. And also some other interesting projects I've been working on 😜.

It is a good addition to my PR to also support the (little) storage available in some of the RTC modules we support, so I'll add that as a feature. (Have to wrap up a few other loose ends first.)

[tonhuisman]

@rapid32 Can you build a Custom ESP8266 build from the PR yourself? As there is no standard ESP8266 build where the EEPROM or RTC SRAM Storage features are included. Then add #define FEATURE_RTC_SRAM_STORAGE 1 to your Custom.h to enable your requested feature.
If you can't self-build, list the required plugins here and I'll provide a test-build. (This feature doesn't fit in a Normal 4M1M build!)

[rapid32]

@rapid32 Can you build a Custom ESP8266 build from the PR yourself? As there is no standard ESP8266 build where the EEPROM or RTC SRAM Storage features are included. Then add #define FEATURE_RTC_SRAM_STORAGE 1 to your Custom.h to enable your requested feature. If you can't self-build, list the required plugins here and I'll provide a test-build. (This feature doesn't fit in a Normal 4M1M build!)

Hi, I have some experience. I'll try to put it together.

[rapid32]

@tonhuisman I compiled the firmware (Build: ESP_Easy_mega_20260811_custom_274_ESP8266_4M1M Aug 11 2026), the DS1307 chip is visible on the I2C bus, but is not detected (Local Time: No system time source and on the Tools tab: External RTC SRAM not available.). I'm attaching the Config.h file.

Config.h file

`#ifndef ESPEASY_CUSTOM_H #define ESPEASY_CUSTOM_H

/*
To modify the stock configuration without changing the EspEasy.ino file :
1) rename this file to "Custom.h" (It is ignored by Git)
2) define your own settings below
3) Build one of the environments with Custom in their name, they will automatically use this file if it exists
*/

/*
#######################################################################################################
Your Own Default Settings
#######################################################################################################
You can basically ovveride ALL macro defined in ESPEasy.ino.
Don't forget to first #undef each existing #define that you add below.
But since this Custom.h is included before other defines are made, you don't have to undef a lot of defines.
Here are some examples:
*/

// --- Feature Flagging ---------------------------------------------------------
// Can be set to 1 to enable, 0 to disable, or not set to use the default (usually via define_plugin_sets.h)

#define FEATURE_RULES_EASY_COLOR_CODE 1 // Use code highlighting, autocompletion and command suggestions in Rules
#define FEATURE_ESPEASY_P2P 1 // (1/0) enables the ESP Easy P2P protocol
#define FEATURE_ARDUINO_OTA 1 // enables the Arduino OTA capabilities
#define FEATURE_THINGSPEAK_EVENT 0 // Generates an event when requesting last value of a field in thingspeak via SendToHTTP(e.g. sendToHTTP,api.thingspeak.com,80,/channels/1667332/fields/5/last)
#define FEATURE_OPENMETEO_EVENT 0 // Generates an event with the response of a open-meteo request (https://open-meteo.com/en/docs)
#define FEATURE_JSON_EVENT 0 // Generates an event with the values of a JSON repsonse of an HTTP call. Keys are stored in json.keys one key per line (e.g.: Body.Data.DAY_ENERGY.Values.1)
#define FEATURE_RTC_SRAM_STORAGE 1

// #define FEATURE_SD 1 // Enable SD card support
// #define FEATURE_DOWNLOAD 1 // Enable downloading a file from an url

#ifdef BUILD_GIT

undef BUILD_GIT

#endif // ifdef BUILD_GIT

#define BUILD_GIT "My Build: " DATE " " TIME

#define DEFAULT_NAME "MyEspEasyDevice" // Enter your device friendly name
#define UNIT 0 // Unit Number
#define DEFAULT_DELAY 60 // Sleep Delay in seconds

// --- Wifi AP Mode (when your Wifi Network is not reachable) ----------------------------------------
#define DEFAULT_AP_IP 192, 168, 4, 1 // Enter IP address (comma separated) for AP (config) mode
#define DEFAULT_AP_SUBNET 255, 255, 255, 0 // Enter IP address (comma separated) for AP (config) mode
#define DEFAULT_AP_KEY "configesp" // Enter network WPA key for AP (config) mode

// #define DEFAULT_AP_DNS 1,1,1,1 // Used by PPP/NAPT feature (mind the comma-separated parts!),
// Cloudflare DNS: 1.1.1.1 and 1.0.0.1 and 1.1.1.2 (secure) and 1.1.1.3 (censored)
// Alternatives
// Cleanbrowsing: 185.228.168.9 and 185.228.169.9
// Google Public DNS: 8.8.8.8 and 8.8.4.4
// Quad9: 9.9.9.9 and 149.112.112.112
// OpenDNS: 208.67.222.222 and 208.67.220.220
// Comodo Secure DNS: 8.26.56.26 and 8.20.247.20

// --- Wifi Client Mode -----------------------------------------------------------------------------
#define DEFAULT_SSID "MyHomeSSID" // Enter your network SSID
#define DEFAULT_KEY "MySuperSecretPassword" // Enter your network WPA key
#define DEFAULT_SSID2 "" // Enter your fallback network SSID
#define DEFAULT_KEY2 "" // Enter your fallback network WPA key
#define DEFAULT_WIFI_INCLUDE_HIDDEN_SSID false // Allow to connect to hidden SSID APs
#define DEFAULT_USE_STATIC_IP false // (true|false) enabled or disabled static IP
#define DEFAULT_IP "192.168.0.50" // Enter your IP address
#define DEFAULT_DNS "192.168.0.1" // Enter your DNS
#define DEFAULT_GW "192.168.0.1" // Enter your Gateway
#define DEFAULT_SUBNET "255.255.255.0" // Enter your Subnet
#define DEFAULT_IPRANGE_LOW "0.0.0.0" // Allowed IP range to access webserver
#define DEFAULT_IPRANGE_HIGH "255.255.255.255" // Allowed IP range to access webserver
#define DEFAULT_IP_BLOCK_LEVEL 1 // 0: ALL_ALLOWED 1: LOCAL_SUBNET_ALLOWED 2:
// ONLY_IP_RANGE_ALLOWED
#define DEFAULT_ADMIN_USERNAME "admin"
#define DEFAULT_ADMIN_PASS ""

#define DEFAULT_WIFI_CONNECTION_TIMEOUT 10000 // minimum timeout in ms for WiFi to be connected.
#define DEFAULT_WIFI_FORCE_BG_MODE false // when set, only allow to connect in 802.11B or G mode (not N)
#define DEFAULT_WIFI_RESTART_WIFI_CONN_LOST false // Perform wifi off and on when connection was lost.
#define DEFAULT_ECO_MODE false // When set, make idle calls between executing tasks.
#define DEFAULT_WIFI_NONE_SLEEP false // When set, the wifi will be set to no longer sleep (more power
// used and need reboot to reset mode)
#define DEFAULT_GRATUITOUS_ARP false // When set, the node will send periodical gratuitous ARP
// packets to announce itself.
#define DEFAULT_TOLERANT_LAST_ARG_PARSE false // When set, the last argument of some commands will be parsed to the end of the line
// See: #2724
#define DEFAULT_SEND_TO_HTTP_ACK false // Wait for ack with SendToHttp command.

#define DEFAULT_AP_FORCE_SETUP true // When set, start Captive Portal to redirect user to web interface when connecting to AP
#define DEFAULT_DONT_ALLOW_START_AP false // Usually the AP will be started when no WiFi is defined, or the defined one cannot be found. This flag may prevent it.

// --- Default Controller ------------------------------------------------------------------------------
#define DEFAULT_CONTROLLER false // true or false enabled or disabled, set 1st controller
// defaults
#define DEFAULT_CONTROLLER_ENABLED true // Enable default controller by default
#define DEFAULT_CONTROLLER_USER "" // Default controller user
#define DEFAULT_CONTROLLER_PASS "" // Default controller Password

// using a default template, you also need to set a DEFAULT PROTOCOL to a suitable MQTT protocol !
#define DEFAULT_PUB "sensors/espeasy/%sysname%/%tskname%/%valname%" // Enter your pub
#define DEFAULT_SUB "sensors/espeasy/%sysname%/#" // Enter your sub
#define DEFAULT_SERVER "192.168.0.8" // Enter your Server IP address
#define DEFAULT_SERVER_HOST "" // Server hostname
#define DEFAULT_SERVER_USEDNS false // true: Use hostname. false: use IP
#define DEFAULT_USE_EXTD_CONTROLLER_CREDENTIALS false // true: Allow longer user credentials for controllers

#define DEFAULT_PORT 8080 // Enter your Server port value
#define DEFAULT_CONTROLLER_TIMEOUT 100 // Default timeout in msec

#define DEFAULT_PROTOCOL 0 // Protocol used for controller communications
// 0 = Stand-alone (no controller set)
// 1 = Domoticz HTTP
// 2 = Domoticz MQTT
// 3 = Nodo Telnet
// 4 = ThingSpeak
// 5 = Home Assistant (openHAB) MQTT
// 6 = PiDome MQTT
// 7 = EmonCMS
// 8 = Generic HTTP
// 9 = FHEM HTTP

#ifdef ESP8266
#define DEFAULT_PIN_I2C_SDA 4
#endif
#ifdef ESP32
#define DEFAULT_PIN_I2C_SDA -1 // Undefined
#endif
#ifdef ESP8266
#define DEFAULT_PIN_I2C_SCL 5
#endif
#ifdef ESP32
#define DEFAULT_PIN_I2C_SCL -1 // Undefined
#endif
#define DEFAULT_PIN_I2C2_SDA -1 // Undefined
#define DEFAULT_PIN_I2C3_SDA -1 // Undefined
#define DEFAULT_PIN_I2C2_SCL -1 // Undefined
#define DEFAULT_PIN_I2C3_SCL -1 // Undefined
#define DEFAULT_I2C_CLOCK_SPEED 400000 // Use 100 kHz if working with old I2C chips
#define FEATURE_I2C_DEVICE_SCAN 1

#define DEFAULT_SPI 0 //0=disabled 1=enabled and for ESP32 there is option 2 =HSPI

#define DEFAULT_PIN_STATUS_LED (-1)
#define DEFAULT_PIN_STATUS_LED_INVERSED true

#define DEFAULT_PIN_RESET_BUTTON (-1)

#define DEFAULT_USE_RULES true // (true|false) Enable Rules?
#define DEFAULT_RULES_OLDENGINE true

#define DEFAULT_MQTT_RETAIN false // (true|false) Retain MQTT messages?
#define DEFAULT_CONTROLLER_DELETE_OLDEST false // (true|false) to delete oldest message when queue is full
#define DEFAULT_CONTROLLER_MUST_CHECK_REPLY false // (true|false) Check Acknowledgment
#define DEFAULT_MQTT_DELAY 100 // Time in milliseconds to retain MQTT messages
#define DEFAULT_MQTT_LWT_TOPIC "" // Default lwt topic
#define DEFAULT_MQTT_LWT_CONNECT_MESSAGE "Connected" // Default lwt message
#define DEFAULT_MQTT_LWT_DISCONNECT_MESSAGE "Connection Lost" // Default lwt message
#define DEFAULT_MQTT_USE_UNITNAME_AS_CLIENTID 0

#define DEFAULT_USE_NTP false // (true|false) Use NTP Server
#define DEFAULT_NTP_HOST "" // NTP Server Hostname
#define DEFAULT_TIME_ZONE 0 // Time Offset (in minutes)
#define DEFAULT_USE_DST false // (true|false) Use Daily Time Saving

#define DEFAULT_LATITUDE 0.0f // Default Latitude
#define DEFAULT_LONGITUDE 0.0f // Default Longitude

#define DEFAULT_SYSLOG_IP "" // Syslog IP Address
#define DEFAULT_SYSLOG_PORT 0 // Standard syslog port: 514
#define DEFAULT_SYSLOG_FACILITY 0 // kern
#define DEFAULT_SYSLOG_LEVEL 0 // Syslog Log Level
#define DEFAULT_SERIAL_LOG_LEVEL LOG_LEVEL_INFO // Serial Log Level
#define DEFAULT_WEB_LOG_LEVEL LOG_LEVEL_INFO // Web Log Level
#define DEFAULT_SD_LOG_LEVEL 0 // SD Card Log Level
#define DEFAULT_USE_SD_LOG false // (true|false) Enable Logging to the SD card

#define DEFAULT_USE_SERIAL true // (true|false) Enable Logging to the Serial Port
#define DEFAULT_SERIAL_BAUD 115200 // Serial Port Baud Rate

#define DEFAULT_SYNC_UDP_PORT 8266 // Used for ESPEasy p2p. (IANA registered port: 8266)

// Factory Reset defaults
#define DEFAULT_FACTORY_RESET_KEEP_UNIT_NAME true
#define DEFAULT_FACTORY_RESET_KEEP_WIFI true
#define DEFAULT_FACTORY_RESET_KEEP_NETWORK true
#define DEFAULT_FACTORY_RESET_KEEP_NTP_DST true
#define DEFAULT_FACTORY_RESET_KEEP_CONSOLE_LOG true

#define BUILD_NO_DEBUG

// Custom built-in url for hosting JavaScript and CSS files.
#define CUSTOM_BUILD_CDN_URL "https://cdn.jsdelivr.net/gh/letscontrolit/ESPEasy@mega/static/"

// Special SSID/key setup only to be used in custom builds.

// Deployment SSID will be used only when the configured SSIDs are not reachable and/or no credentials are set.
// This to make deployment of large number of nodes easier
#define CUSTOM_DEPLOYMENT_SSID "" // Enter SSID not shown in UI, to be used on custom builds to ease deployment
#define CUSTOM_DEPLOYMENT_KEY "" // Enter key not shown in UI, to be used on custom builds to ease deployment
#define CUSTOM_SUPPORT_SSID "" // Enter SSID not shown in UI, to be used on custom builds to ease support
#define CUSTOM_SUPPORT_KEY "" // Enter key not shown in UI, to be used on custom builds to ease support

// Emergency fallback SSID will only be attempted in the first 10 minutes after reboot.
// When found, the unit will connect to it and depending on the built in flag, it will either just connect to it, or clear set credentials.
// Use case: User connects to a public AP which does need to agree on an agreement page for the rules of conduct (e.g. open APs)
// This is seen as a valid connection, so the unit will not reconnect to another node and thus becomes inaccessible.
#define CUSTOM_EMERGENCY_FALLBACK_SSID "" // Enter SSID not shown in UI, to be used to regain access to the node
#define CUSTOM_EMERGENCY_FALLBACK_KEY "" // Enter key not shown in UI, to be used to regain access to the node

#define CUSTOM_EMERGENCY_FALLBACK_RESET_CREDENTIALS false
#define CUSTOM_EMERGENCY_FALLBACK_START_AP false

#define CUSTOM_EMERGENCY_FALLBACK_ALLOW_MINUTES_UPTIME 10

// Allow for remote provisioning of a node.
// This is only allowed for custom builds.
// To setup the configuration of the provisioning file, one must also define FEATURE_SETTINGS_ARCHIVE
// Default setting is to not allow to configure a node remotely, unless explicitly enabled.
// #define FEATURE_CUSTOM_PROVISIONING 1

#define FEATURE_SSDP 1

#define FEATURE_EXT_RTC 1 // Support for external RTC clock modules like PCF8563/PCF8523/DS3231/DS1307

#define FEATURE_PLUGIN_STATS 1 // Support collecting historic data + computing stats on historic data
#ifdef ESP8266
// # define PLUGIN_STATS_NR_ELEMENTS 16
#endif // ifdef ESP8266

ifdef ESP32

// # define PLUGIN_STATS_NR_ELEMENTS 64
#endif // ifdef ESP32
#define FEATURE_CHART_JS 1 // Support for drawing charts, like PluginStats historic data

// Optional alternative CDN links:
// Chart.js: (only used when FEATURE_CHART_JS is enabled)
// #define CDN_URL_CHART_JS "https://cdn.jsdelivr.net/npm/chart.js@4.1.2/dist/chart.umd.min.js"
// JQuery:
// #define CDN_URL_JQUERY "https://code.jquery.com/jquery-3.6.0.min.js"

// #define FEATURE_SETTINGS_ARCHIVE 1
#define FEATURE_I2CMULTIPLEXER 1
// #define FEATURE_TRIGONOMETRIC_FUNCTIONS_RULES 1
// #define PLUGIN_USES_ADAFRUITGFX // Used by Display plugins using Adafruit GFX library
// #define ADAGFX_ARGUMENT_VALIDATION 0 // Disable argument validation in AdafruitGFX_helper
// #define ADAGFX_SUPPORT_7COLOR 0 // Disable the support of 7-color eInk displays by AdafruitGFX_helper
// #define FEATURE_SEND_TO_HTTP 1 // Enable availability of the SendToHTTP command
// #define FEATURE_POST_TO_HTTP 1 // Enable availability of the PostToHTTP command
// #define FEATURE_PUT_TO_HTTP 1 // Enable availability of the PutToHTTP command
// #define FEATURE_I2C_DEVICE_CHECK 0 // Disable the I2C Device check feature
// #define FEATURE_I2C_GET_ADDRESS 0 // Disable fetching the I2C address from I2C plugins. Will be enabled when FEATURE_I2C_DEVICE_CHECK is enabled
// #define FEATURE_RTTTL 1 // Enable rtttl command
// #define FEATURE_ANYRTTTL_LIB 1 // Use AnyRttl library for RTTTL handling
// #define FEATURE_ANYRTTTL_ASYNC 1 // When AnyRttl enabled, use Async (nonblocking) mode instead of the default Blocking mode
// #define FEATURE_RTTTL_EVENTS 1 // Enable RTTTL events for Async use, for blocking it doesn't make sense
// #define FEATURE_BUSCMD_STRING 1 // Enable support for String data-format in Helpers/BusCmd_Handler, default disabled for LIMIT_BUILD_SIZE only
// #define FEATURE_STRING_VARIABLES 1 // Enable String variable support (enabled on ESP32, NOT supported on ESP8266 for memory restrictions!)
// #define FEATURE_COMMAND_OWSCAN 0 // Disable 1-wire scanner support, only feasible when 1-wire support is included in the build (P004, P080, P100), default disabled for MINIMAL_OTA builds
// #define FEATURE_MQTT_CONNECT_BACKGROUND 1 // Enable connecting to an MQTT broker in an ESP32 RTOS background thread (not possible on ESP8266)
// #define FEATURE_I2C_MULTIPLE 0 // Disable multiple I2C buses, only available for ESP32, default enabled on ESP32, can be disabled here
// #define FEATURE_PLUGIN_LIST 1 // Enable the Tools / Plugin list page (default enabled for ESP32)
// #define FEATURE_LAT_LONG_VAR_CMD 1 // Enable the %latitude% and %longitude% system variables, and Latitude and Longitude commands (default enabled for ESP32)

// #define FEATURE_TASKVALUE_ATTRIBUTES 1 // Enable extra Task Value attributes (default enabled for ESP32)
// #define FEATURE_TASKVALUE_UNIT_OF_MEASURE 1 // Enable Unit of Measure per Task Value (default enabled for ESP32), also useful for MQTT Discovery
// #define FEATURE_CUSTOM_TASKVAR_VTYPE 1 // Enable Custom Value Type per Task Value (default enabled for ESP32), also useful for MQTT Discovery

// #define FEATURE_MQTT_DISCOVER 1 // Enable MQTT Auto Discovery (currently only available for Home Assistant C005)
// #define FEATURE_MQTT_DEVICECLASS 1 // Enable selectable Device Class for Auto Discovery
// #define FEATURE_MQTT_STATE_CLASS 1 // Enable selectable State Class per Task Valie for Auto Discovery

// #define FEATURE_MQTT_TLS 1 // Enable TLS support for MQTT Controller connections (only available on ESP32)
// #define FEATURE_EMAIL_TLS 1 // Enable TLS support for Email Notifications (only available on ESP32)
// #define FEATURE_HTTP_TLS 1 // Enable TLS support for HTTP connections (only available on ESP32)

#if FEATURE_CUSTOM_PROVISIONING
// For device models, see src/src/DataTypes/DeviceModel.h
// #ifdef ESP32
// #define DEFAULT_FACTORY_DEFAULT_DEVICE_MODEL 0 // DeviceModel_default
// #endif
// #ifdef ESP8266
// #define DEFAULT_FACTORY_DEFAULT_DEVICE_MODEL 0 // DeviceModel_default
// #endif
// #define DEFAULT_PROVISIONING_FETCH_RULES1 false
// #define DEFAULT_PROVISIONING_FETCH_RULES2 false
// #define DEFAULT_PROVISIONING_FETCH_RULES3 false
// #define DEFAULT_PROVISIONING_FETCH_RULES4 false
// #define DEFAULT_PROVISIONING_FETCH_NOTIFICATIONS false
// #define DEFAULT_PROVISIONING_FETCH_SECURITY false
// #define DEFAULT_PROVISIONING_FETCH_CONFIG false
// #define DEFAULT_PROVISIONING_FETCH_PROVISIONING false
// #define DEFAULT_PROVISIONING_FETCH_FIRMWARE false
// #define DEFAULT_PROVISIONING_SAVE_URL false
// #define DEFAULT_PROVISIONING_SAVE_CREDENTIALS false
// #define DEFAULT_PROVISIONING_ALLOW_FETCH_COMMAND false
// #define DEFAULT_PROVISIONING_URL ""
// #define DEFAULT_PROVISIONING_USER ""
// #define DEFAULT_PROVISIONING_PASS ""
#endif

/*
#######################################################################################################
Defining Ethernet & GPIO
#######################################################################################################
*/
// Actual values can be obtained from product documentation and ESPEasyDefaults.h
// #define DEFAULT_ETH_PHY_ADDR 0
// #define DEFAULT_ETH_PHY_TYPE 0 // See EthernetParameters.h enum EthPhyType_t
// #define DEFAULT_ETH_PIN_MDC -1
// #define DEFAULT_ETH_PIN_MDIO -1
// #define DEFAULT_ETH_PIN_POWER -1
// #define DEFAULT_ETH_CLOCK_MODE (0) // See EthernetParameters.h enum EthClockMode_t

// #define DEFAULT_NETWORK_MEDIUM ESPEasy::net::NetworkMedium_t::WIFI

// #define DEFAULT_ENABLED_NW001 1 // Enable NWPLUGIN_001, on factory reset/initial setup
// #define DEFAULT_ENABLED_NW002 1 // Enable NWPLUGIN_002, on factory reset/initial setup
// #define DEFAULT_ENABLED_NW003 1 // Enable NWPLUGIN_003, on factory reset/initial setup
// #define DEFAULT_ENABLED_NW004 1 // Enable NWPLUGIN_004, on factory reset/initial setup
// #define DEFAULT_ENABLED_NW005 1 // Enable NWPLUGIN_005, on factory reset/initial setup
// This list should be updated when adding new Network Interface plugins

/*
#######################################################################################################
Defining web interface
#######################################################################################################
*/

#define MENU_INDEX_MAIN_VISIBLE true
/*
#define MENU_INDEX_CONFIG_VISIBLE false
#define MENU_INDEX_CONTROLLERS_VISIBLE false
#define MENU_INDEX_NETWORK_VISIBLE false
#define MENU_INDEX_HARDWARE_VISIBLE false
#define MENU_INDEX_BUSES_VISIBLE false
#define MENU_INDEX_DEVICES_VISIBLE false
#define MENU_INDEX_RULES_VISIBLE false
#define MENU_INDEX_NOTIFICATIONS_VISIBLE false
#define MENU_INDEX_TOOLS_VISIBLE false
*/

#define MAIN_PAGE_SHOW_SYSINFO_BUTTON true
#define MAIN_PAGE_SHOW_WiFi_SETUP_BUTTON true
#define MAIN_PAGE_SHOW_BASIC_INFO_NOT_LOGGED_IN false

#define MAIN_PAGE_SHOW_NODE_LIST_BUILD true
#define MAIN_PAGE_SHOW_NODE_LIST_TYPE true

#define SETUP_PAGE_SHOW_CONFIG_BUTTON true

// #define FEATURE_AUTO_DARK_MODE 0 // 0 = Disable auto-dark mode
// #define FEATURE_EXTENDED_TASK_VALUE_TYPES 0 // 0 = Disable extra task value types like 64 bit ints, double, etc. in Dummy tasks
// #define FEATURE_USE_DOUBLE_AS_ESPEASY_RULES_FLOAT_TYPE 0 // 0 = switch to float as floating point type for rules/formula processing.

//#define WEBPAGE_TEMPLATE_HIDE_HELP_BUTTON

#define SHOW_SYSINFO_JSON 1 //Enables the sysinfo_json page (by default is enabled when WEBSERVER_NEW_UI is enabled too)

/*
#######################################################################################################
CSS / template
#######################################################################################################
/
/
#define WEBPAGE_TEMPLATE_DEFAULT_HEADER "

ESP Easy Mega: {{title}}

"
#define WEBPAGE_TEMPLATE_DEFAULT_FOOTER "

Powered by Let's Control It community

"
#define WEBPAGE_TEMPLATE_AP_HEADER "

Welcome to ESP Easy Mega AP

"
#define WEBPAGE_TEMPLATE_HIDE_HELP_BUTTON
/
// Embed Custom CSS in Custom.h:
/
#define WEBSERVER_EMBED_CUSTOM_CSS
static const char DATA_ESPEASY_DEFAULT_MIN_CSS[] PROGMEM = {
...
,0};
*/

/*
#######################################################################################################
Special settings (rendering settings incompatible with other builds)
#######################################################################################################
*/

// #define FEATURE_NON_STANDARD_24_TASKS 1

/*
#######################################################################################################
Your Own selection of plugins and controllers
#######################################################################################################
*/

#define CONTROLLER_SET_NONE
#define NOTIFIER_SET_NONE
#define PLUGIN_SET_NONE

/*
#######################################################################################################
########### Plugins
#######################################################################################################
*/

// #define FEATURE_SERVO 1 // Uncomment and set to 0 to explicitly disable SERVO support

#define USES_P001 // Switch
// #define USES_P002 // ADC
#define USES_P003 // Pulse
#define USES_P004 // 1-Wire Temperature (Dallas/Maxim DS18B20)
#define USES_P005 // DHT11/12/22 SONOFF2301/7021/MS01
#define USES_P006 // BMP085/180
// #define USES_P007 // PCF8591
// #define USES_P008 // Wiegand (RFID)
// #define USES_P009 // MCP23017

// #define USES_P010 // BH1750
// #define USES_P011 // ProMini Extender
// #define USES_P012 // LCD2004
// #define USES_P013 // HC-SR04/RCW-0001
// #define USES_P014 // SI70xx/HTU21D
// #define USES_P015 // TSL2561
// #define USES_P017 // PN532
// #define USES_P018 // GP2Y10
// #define USES_P019 // PCF8574

// #define USES_P020 // Ser2Net
// #define USES_P021 // Level Control
// #define USES_P022 // PCA9685
// #define USES_P023 // OLED SSD1306
// #define USES_P024 // MLX90614
// #define USES_P025 // ADS1x15
// #define USES_P026 // SysInfo
// #define USES_P027 // INA219
// #define USES_P028 // BMx280
// #define USES_P029 // Domoticz MQTT Helper

// #define USES_P031 // SHT1x
// #define USES_P032 // MS5611 (GY-63)
#define USES_P033 // Dummy Device
// #define USES_P034 // DHT12
// #define USES_P036 // OLED SSD1306/SH1106 Framed
// #define P036_FEATURE_DISPLAY_PREVIEW 1 // Enable Preview feature, shows on-display content on Devices overview page
// #define P036_FEATURE_ALIGN_PREVIEW 1 // Enable center/right-align feature when preview is enabled (auto-disabled for 1M builds)
// #define P036_ENABLE_TICKER 1 // Enable ticker function
#define USES_P037 // MQTT Import
// #define P037_MAPPING_SUPPORT 1 // Enable Value mapping support
// #define P037_FILTER_SUPPORT 1 // Enable filtering support
// #define P037_JSON_SUPPORT 1 // Enable Json support
// #define USES_P038 // NeoPixel
// #define P038_FEATURE_NEOPIXELFOR 1 // Enable NeoPixelFor/NeoPixelForHSV commands (default enabled for ESP32)
// #define USES_P039 // Thermocouple

// #define USES_P040 // RFID - ID12LA/RDM6300
// #define USES_P041 // NeoPixel (Word Clock)
// #define USES_P042 // NeoPixel (Candle)
// #define USES_P043 // ClkOutput
// #define USES_P044 // P1 Wifi Gateway (Merged with P020, when P044 is enabled, then P020 is also enabled)
// #define USES_P045 // MPU6050
// #define USES_P046 // Ventus W266
// #define USES_P047 // Soil moisture sensor
// #define USES_P048 // Motoshield v2
// #define USES_P049 // MH-Z19

// #define USES_P050 // TCS34725 RGB Color Sensor with IR filter and White LED
// #define USES_P051 // AM2320
// #define USES_P052 // SenseAir
// #define USES_P053 // PMSx003 / PMSx003ST
// #define USES_P054 // DMX512
// #define USES_P055 // Chiming
// #define USES_P056 // SDS011/018/198
// #define USES_P057 // HT16K33_LED
// #define USES_P058 // HT16K33_KeyPad
// #define USES_P059 // Rotary Encoder

// #define USES_P060 // MCP3221
// #define USES_P061 // PCF8574 / MCP23017 / PCA8575
// #define USES_P062 // MPR121
// #define USES_P063 // TTP229
// #define USES_P064 // APDS9960 Gesture
// #define USES_P065 // DRF0299
// #define USES_P066 // VEML6040
// #define USES_P067 // HX711_Load_Cell
// #define USES_P068 // SHT3x
// #define USES_P069 // LM75A

// #define USES_P070 // NeoPixel_Clock
// #define USES_P071 // Kamstrup401
// #define USES_P072 // HDC1000/HDC1008/HDC1010/HDC1050/HDC1080
// #define USES_P073 // 7-segment display
// #define P073_USE_74HC595 1 // Enable 74HC595 displays
// #define P073_USE_74HC595_OVERRIDE 1 // Allow 74HC595 displays feature for ESP8266 builds
// #define USES_P074 // TSL2591
// #define USES_P075 // Nextion
// #define USES_P076 // HLW8012/BL0937 (Shelly Plug S, Sonoff POW R1, Huafan SS, KMC 70011, Aplic WDP303075, SK03 Outdoor, BlitzWolf SHP, Teckin, Teckin US, Gosund SP1 v23)
// #define USES_P077 // CSE7766 (Sonoff S31, Sonoff POW R2, Sonoff POW R3xx(D), Sonoff Dual R3)
// #define USES_P078 // Eastron SDMxxx Modbus
// #define USES_P079 // Wemos / Lolin Motorshield

// #define USES_P080 // iButton Sensor DS1990A
#define USES_P081 // Cron
// #define USES_P082 // GPS
// #define USES_P083 // SGP30 TVOC
// #define USES_P084 // VEML6070
// #define USES_P085 // AcuDC24x
// #define USES_P086 // Receiving values according Homie convention. Works together with C014 Homie controller
// #define USES_P087 // Serial Proxy
// #define USES_P088 // HeatpumpIR
// #define USES_P089 // Ping

// #define USES_P090 // CCS811 TVOC
// #define USES_P091 // Serial MCU controlled switch
// #define USES_P092 // DLbus
// #define USES_P093 // Mitsubishi Heat Pump
// #define USES_P094 // CUL Reader
// #define USES_P095 // ILI934x / ILI948x
// #define USES_P096 // eInk
// #define USES_P097 // ESP32 Touch
// #define USES_P098 // PWM Motor
// #define USES_P099 // XPT2046 touchscreen

// #define USES_P100 // DS2423 counter
// #define USES_P101 // Wake On Lan
// #define USES_P102 // PZEM-004Tv30-Multiple
// #define USES_P103 // Atlas Scientific EZO Sensors (pH, ORP, EZO, DO)
// #define USES_P104 // MAX7219 dot matrix
// #define USES_P105 // AHT10/AHT2x
// #define USES_P106 // BME68x
// #define USES_P107 // SI1145
// #define USES_P108 // DDS238-x ZN Modbus energy meters
// #define USES_P109 // ThermoOLED

// #define USES_P110 // VL53L0X Time of Flight sensor
// #define USES_P111 // MFRC522 RFID reader
// #define USES_P112 // AS7265x
// #define USES_P113 // VL53L1X ToF
// #define USES_P114 // VEML6075
// #define USES_P115 // MAX1704x
// #define USES_P116 // ST77xx
// #define USES_P117 // SCD30
// #define USES_P118 // Itho
// #define USES_P119 // ITG3205 Gyro

// #define USES_P120 // ADXL345 I2C Acceleration / Gravity
// #define USES_P121 // HMC5883L
// #define USES_P122 // SHT2x
// #define USES_P123 // I2C Touchscreens
// #define USES_P124 // I2C Multi Relay
// #define USES_P125 // ADXL345 SPI Acceleration / Gravity
// #define USES_P126 // 74HC595 Shift register
// #define USES_P127 // CDM7160
// #define USES_P128 // NeoPixel (BusFX)
// #define P128_USES_GRB // Default
// #define P128_USES_GRBW // Select 1 option, only first one enabled from this list will be used
// #define P128_USES_RGB
// #define P128_USES_RGBW
// #define P128_USES_BRG
// #define P128_USES_BGR
// #define P128_USES_RBG
// #define P128_ENABLE_FAKETV 1 // Enable(1)/Disable(0) FakeTV effect, disabled by default on ESP8266 (.bin size issue), enabled by default on ESP32
// #define USES_P129 // 74HC165 Input shiftregisters

// #define USES_P131 // NeoPixel Matrix
// #define USES_P132 // INA3221
// #define P132_EXTENDED 1 // Extend support with INA219, INA226, INA228, INA230, INA231 and INA260
// #define USES_P133 // LTR390 UV
// #define USES_P134 // A02YYUW
// #define USES_P135 // SCD4x
// #define P135_FEATURE_RESET_COMMANDS 1 // Enable/Disable quite spacious (~950 bytes) 'selftest' and 'factoryreset' subcommands
// #define USES_P137 // AXP192
// #define USES_P138 // IP5306
// #define USES_P139 // AXP2101

// #define USES_P140 // CardKB
// #define UN_USES_P140 // DISABLE I2C CardKB for ESP32 (Enabled by default for ESP32)
// #define USES_P141 // PCD8544 Nokia 5110 LCD
// #define USES_P142 // Position - AS5600
// #define USES_P143 // I2C Rotary encoders
// #define P143_FEATURE_INCLUDE_M5STACK 0 // Enabled by default, can be turned off here
// #define P143_FEATURE_INCLUDE_DFROBOT 0 // Enabled by default, can be turned off here
// #define P143_FEATURE_COUNTER_COLORMAPPING 0 // Enabled by default, can be turned off here

// #define USES_P144 // PM1006(K) (Vindriktning)
// #define USES_P145 // MQxxx (MQ135 CO2, MQ3 Alcohol)
// #define USES_P146 // Cache Reader
// #define USES_P147 // SGP4x
// #define P147_FEATURE_GASINDEXALGORITHM 0 // Enabled by default, can be turned off here
// #define USES_P148 // POWR3xxD/THR3xxD

// #define USES_P150 // TMP117 Temperature
// #define USES_P151 // Honeywell Pressure
// #define USES_P152 // ESP32 DAC
// #define USES_P153 // SHT4x
// #define USES_P154 // BMP3xx I2C

// #define USES_P159 // Presence - LD2410 Radar detection

// #define USES_P162 // Output - MCP42xxx Digipot
// #define USES_P163 // Environment - RadSens I2C radiation counter
// #define USES_P164 // Gases - ENS16x TVOC/eCO2
// #define USES_P165 // Display - NeoPixel (7-segment)
// #define USES_P166 // Output - GP8403 Dual channel DAC (Digital Analog Converter)
// #define USES_P167 // Environment - Sensirion SEN5x / Ikea Vindstyrka
// #define USES_P168 // Light - VEML6030/VEML7700
// #define USES_P169 // Environment - AS3935 Lightning Detector

// #define USES_P170 // Input - I2C Liquid level sensor
// #define USES_P172 // BMP3xx SPI.
// #define USES_P173 // Environment - SHTC3
// #define USES_P175 // Dust - PMSx003i I2C
// #define USES_P176 // Communication - Victron VE.Direct
// #define USES_P177 // XDB401 I2C Pressure
// #define USES_P178 // LU9685 Servo controller

#define USES_P180 // I2C Generic

/*
#######################################################################################################
########### Controllers
#######################################################################################################
*/

// #define USES_C001 // Domoticz HTTP
// #define USES_C002 // Domoticz MQTT
// #define USES_C003 // Nodo telnet
// #define USES_C004 // ThingSpeak
#define USES_C005 // Home Assistant (openHAB) MQTT
// #define USES_C006 // PiDome MQTT
// #define USES_C007 // Emoncms
#define USES_C008 // Generic HTTP
// #define USES_C009 // FHEM HTTP
// #define USES_C010 // Generic UDP
#define USES_C011 // Generic HTTP Advanced
// #define USES_C012 // Blynk HTTP
// #define USES_C013 // ESPEasy P2P network
// #define USES_C014 // homie 3 & 4dev MQTT
// #define USES_C015 // Blynk
// #define USES_C016 // Cache controller
// #define USES_C017 // Zabbix
// #define USES_C018 // TTN/RN2483
// #define USES_C023 // AT-command LoRaWAN

/*
#######################################################################################################
########### Notifiers
#######################################################################################################
*/

// #define USES_N001 // Email
// #define USES_N002 // Buzzer

#endif // ESPEASY_CUSTOM_H
`

[tonhuisman]

Github formatting messed up your Custom.h quite severely (multi-line code content should be wrapped with 3 backticks, a single backtick is for in-line code), but I was able to distill your modifications.
After uploading I do see the External Time Source option, are you sure the upload was successful? On the Main page you should see Git Build: | My Build: Aug....

Here's my build:

ESP_Easy_mega_20260812_custom_274_ESP8266_4M1M.zip

I don't have a DS1307 available, but command writertc,0,123 shows Failed (as it can't find the chip) not Command unknown: writertc,0,123 (for any unknown command), so the command is included in my build 😉

[rapid32]

@tonhuisman

The RTC clock was successfully configured, but the command: writertc,0,123 failed.

.../eepromvars returns "External RTC SRAM not available."

[tonhuisman]

Ah, I found the culprit, was using the wrong Settings variable (it has an accessor function that does some bit shifting).

Here's an updated build:

ESP_Easy_mega_20260813_custom_274_ESP8266_4M1M.zip

This is what I'm seeing now at the ./eepromvars page:

[rapid32]

I flashed the device, but when I run the commands: .../tools?cmd=writertc%2C0%2C123 or .../eepromvars, it reboots.

[tonhuisman]

After uploading the update, did you wait until the web interface was refreshed to the Main page, or did you press the reset button before it came back?
IOW, You can try to re-apply the update, sometimes it fails when reset too early. The screenshot I made was running the binary that I uploaded.

[rapid32]

I installed the firmware correctly

[tonhuisman]

How the OTA update, via the web interface is applied:

• The download is stored in an unused part of the flash, until the download is complete
• Then the ESP is rebooted and the downloaded data is written on top of the currently installed sketch (this takes around 20 seconds)
• Then the (new) sketch is started

Sometimes, the transfer from the download location to the sketch location is incomplete, or stalled or interrupted if the erasing of a flash-page is slow, causing the timer-triggered reboot to happen too early, leaving a part of the sketch in a limbo-state, with unexpected reboots as the most obvious indicator. Parts of the sketch will work as intended and expected, but other parts may crash because of invalid instructions.
This is why I requested the firmware update to be applied again, to be absolutely sure the update process worked correctly.

[rapid32]

I load the firmware strictly via UART, sometimes I first upload blank_1M.bin

upd.: 14.08 The reboot only occurs when the DS1307 chip is connected. When the chip is disconnected, see the screenshot below:

[tonhuisman]

A few questions:

• Did you eventually re-flash the unit with the last upload I provided?
• What tool did you use to upload the binary?
• What file did you upload (.bin or .bin.gz)?
• What is the response if you enter in the Tools page this command and click Submit: [readrtc#0]
• And the same for: [readrtc#max]
• Do you have another ESP available for testing? (can be any ESP model, just name it including the flash size and I'll provide a matching build, if needed)

[rapid32]

A few questions:

• Did you eventually re-flash the unit with the last upload I provided?
  Yes
• What tool did you use to upload the binary?

• What file did you upload (.bin or .bin.gz)?
  ESP_Easy_mega_20260813_custom_274_ESP8266_4M1M.bin
• What is the response if you enter in the Tools page this command and click Submit: [readrtc#0]
  Reboot
• And the same for: [readrtc#max]
  Command unknown: 7

• Do you have another ESP available for testing? (can be any ESP model, just name it including the flash size and I'll provide a matching build, if needed)
  ESP-12E (ESP8266 4Mb)