2025.04.17

🚨 Partition Layout Change

Coming from firmware version 2024.06.03 or older *1), you cannot upgrade to this release (or any future release) by performing an over-the-air (OTA) update using the web interface! Read and follow the upgrade instructions, where additional information is available as well.

If you upgraded to version 2024.08.18 or newer already *2), you should be good to perform an OTA update using the web interface (unless you are using the generic_esp32_4mb_no_ota firmware variant).

*1) Technically: If you are still using the "old" partition layout where the sketch size is only 1,920 kB. See Info -> System in the web UI to know your current sketch size.
*2) Only when upgraded using the respective .factory.bin image over a wired connection to the ESP32, such that the partition layout was actually updated alongside the firmware.

Upstream

This release includes upstream OpenDTU v25.4.10.

🐰🐣 Features

• Feature: Support Zendure Solarflow Battery with local MQTT
• Feature: add current to MQTT battery provider
• Feature: support Victron VM-3P75CT Power Meter
• Feature: chunk webconsole messages in websocket
• Feature: 3-phase SDM: read SDM_TOTAL_POWER
• Feature: DPL: respect immediate charging request
• Feature: add SmartShunt 300A/50mV to list of known VE.Direct devices
• Feature: Added polish language pack (thanks to @AdamWitek77)

🐛 Fixes

DPL

• Fix: use current AC for smart buffer reduction
• Fix: ignore non-eligible inverters in all calculcations
• Fix: add smart buffer output to total DPL output
• Fix: cannot un-govern solar-powered inverters
• Fix: do not retry limit commands
• Fix: make getDischargeCurrentLimit() readable and return expected value
• Fix: prevent underflow in solar charger output calculation
• Fix: Prevent underflows in getMaxIncreaseWatts() methods
• Fix: solar-powered inverters are non-eligible at nighttime
• Fix: ignore stats of non-eligible inverters
• Fix: do not rely on unreachable inverters for voltage reading
• Fix: skip non-eligible inverters in unconditional solar passthrough
• Fix: ignore hysteresis when inverter should be shutdown
• Fix: dynamic threshold for solar inverters
• Fix: Solar inverter should report its minimal power when started in the morning
• Fix: don't assume max increase for solar inverter w/o overscaling
• Fix: force restart of battery and smart-buffer powered inverters

VE.Direct Solar Charger

• Fix: unused state of operation, missing unit, unused std::optional
• Fix: VeDirectFrameHandler: Reject non-ASCII characters
• Fix: use _logId as key to prevent phantom device stats from persisting
• Fix: ignore stale stats
• Fix: prioritize VE.Direct network power
• Fix: account negative output power of VE.Direct charge controllers

Logging

• Fix: web console: prevent concurrent websockets
• Fix: webconsole websocket heap consumption issue
• Fix: flush Serial after each line
• Fix: en-/disable DTU verbose logging w/o restart

Other

• Fix: disable temperature readings for ESP32-S3
• Fix: handle MQTT message fragmentation
• Fix: Disable SPI3_HOST with ESP32-S2 for SpiManager
• Fix: empty data point container shall return 0 for getLastUpdate()
• Fix: DTU serial change not possible
• Fix: scroll to top when battery config is saved
• Fix: MQTT battery SoC precision calculation
• Fix: bump ESPAsyncWebServer to v3.7.6

🌎 Web Application

• webapp: show relevant requirements for solar powered inverters
• webapp: beautify controls on web console view
• webapp: remove (more) colons from forms
• webapp: use same appearance for all dataAge displays
• webapp: introduce and use DataAgeDisplay component
• webapp: use pluralization of data age UI component
• webapp: remove obsolete DataAge language tokens
• webapp: Update dependencies
• webapp: Update dependencies
• webapp: Update dependencies
• webapp: Update dependencies
• webapp: Update dependencies
• webapp: Update dependencies

🛠 Under the hood

• adopt new signature of MqttSubscribeParser.OnMessageCallback
• Upgrade ESP32Async/ESPAsyncWebServer from 3.6.2 to 3.7.0
• Upgrade ESP32Async/ESPAsyncWebServer from 3.7.0 to 3.7.3
• Upgrade ESP32Async/ESPAsyncWebServer from 3.7.3 to 3.7.4
• Upgrade olikraus/U8g2 from 2.36.2 to 2.36.4
• Upgrade olikraus/U8g2 from 2.36.4 to 2.36.5
• Update bblanchon/ArduinoJson from 7.3.0 to 7.3.1
• Change datatype for led pins from int8_t to gpio_num_t
• Change datatype for nrf24 pins from int8_t to gpio_num_t
• Change datatype for cmt pins from int8_t to gpio_num_t
• Change datatype for w5500 pins from int8_t to gpio_num_t
• Change datatype for eth pins from int to gpio_num_t
• Change datatype for display pins from uint8_t to gpio_num_t
• "victron" pins: switch to gpio_num_t
• "battery" pins: switch to gpio_num_t
• "huawei" pins: switch to gpio_num_t
• "powermeter" pins: switch to gpio_num_t
• Make pinmapping variable const
• Move all display related initialization inside the display class
• Improvement: restructure powermeter providers
• Move SpiManager registration into PinMapping class
• Improvement: use timestamp from Victron framehandler for data transfer to battery stats
• restructure implementation of battery interfaces
• restructure battery's HASS integration
• clean up JK BMS HA auto-discovery device name
• battery HASS: move voltage and current sensors to base class
• SBS battery: use Batteries::Stats::setCurrent
• DPL: verbose log day vs. night time
• move info about inverter output metering to inverter dump
• DataPointContainer::add() shall update existing data
• make DataPointContainer thread-safe using a mutex
• Improvement: use DataPointContainer in power meters
• Simplify code for sunset calculation
• Simplify code for CommandQueue
• Simplify code of weekday calculation
• Less calculation in locked code area
• Simplify Display Graphic code
• Added device profile for Olimex ESP32-POE and CMT2300A module
• Reduce nested code by one level
• Call getLocalTime() only once to prevent a delay of 10ms if no time is available
• Improvement: DPL: improve handling without overscaling
• bump mikepenz/release-changelog-builder-action from 4 to 5
• Bump mikepenz/release-changelog-builder-action to 5.3.0
• Simplify code in radio classes
• DPL: correct a typo in unconditional solar passthrough
• DPL: make isEligible() return a boolean
• append warning to web console rather than replacing a line
• Updated all languages to latest status
• switch back to localtime_r()
• Initialize the dnsserver object in the constructor
• add Waveshare ESP32-S3-ETH device profile
• PowerLimiterOverscalingInverter: remove unused variable
• feat(WebApi_prometheus.cpp): dynamically adjust the initial response buffer size
• Slight optimization in bug report template
• Use the right format string on a lot of locations
• Make setLed method compatible with Arduino Framework 3
• Use correct signature for getMaxResendCount
• Remove not required parameters from MqttSubscribeParser
• Improvement: split battery config into individual configs
• Give reconnect more time
• Merge upstream tag 'v25.4.2'
• Merge upstream tag 'v25.4.4'
• Merge upstream tag 'v25.4.10'
• CPU temperature: make boolean value human-readable in serial log
• remove .vscode folder
• git ignore everything in .vscode/
• Apply automatic code formatting