SmartPDCode/cust_data/changes_list.txt

#V1.3.2 (2025-08-23 - 2025-09-30) 

**New Features**
-   Added historical record chart display for dry contact type sensors.
-   Added the display of total input information for three-phase type PDUs.
-   Added the display of apparent power for both three-phase and single-phase type PDUs.
-   Added an MQTT interface for per-phase threshold exceedance alarms.
-   Added over-limit action protection for L1, L2, and L3.

**Bug Fixes**
-   Fixed the bug where dry contact sensor alarms are ineffective.
-   Fixed the error in threshold distribution during the startup of three-phase PDUs.

**Optimizations**
-   Optimized the sensor information display interface.

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#V1.3.1 (2025-07-21 - 2025-08-22) 

**New Features**
-   Added a pop-up display for alarm information on the small screen, showing up to 10 recent alarms.

**Bug Fixes**
-   Fixed the issue of MAC address jumping during PDU startup.
-   Fixed the inaccurate total power consumption statistics for each phase in the scenario of three-phase input and single-phase output.
-   Fixed the sensor alarm translation errors.
-   Fixed the issue where IPv4 settings cannot be changed on the web interface when DHCP fails to allocate an IP address.
-   Fixed the false red light initialization alarm on the small screen status indicator.

**Optimizations**
-   Adjusted the overall threshold minimum to 0.05.
-   Adjusted the Websocket queue size to reduce program memory usage.
-   Optimized the 4G module SIM card hot-swapping function (requires hardware support for the 4G card slot).
-   Optimized the switching logic for 4G, WIFI, and wired network ports.
-   Modified channel scanning to repeat twice to prevent board loss due to serial communication failures.

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#V1.3.0 (2025-06-27 - 2025-07-20) 

**New Features**
-   Added SNMP overall power information over-limit alarm functionality.
-   Introduced memory detection tool for enhanced system diagnostics.
-   Implemented batch writing of MAC addresses from CSV files for product information configuration.
-   Enhanced SNMP protocol support with power and sensor over-limit alarm information interfaces.
-   Included Malaysia project sensor configuration database.

**Bug Fixes**
-   Fixed device cascading read/write instruction issues causing serial port failure.
-   Resolved memory leaks caused by HTTP requests.
-   Fixed memory leak issues in the MQTT WebSocket interface.
-   Corrected the issue where control panel data still appeared after going offline.
-   Addressed NTP memory leak problems due to unrecovered thread creation.
-   Fixed system crashes caused by reading circuit breaker and channel information during cascading.
-   Resolved the issue of the system recording to the database even when the control board was unreadable.
-   Corrected the display of multiple historical records for dry contact sensors.
-   Fixed the bug where the current reading might be zero.
-   Addressed the issue where the current could not be read.
-   Fixed the SMTP toggle defect on the web interface.
-   Resolved the issue where multiple MQTT servers could only push to one server.
-   Corrected the garbled text issue when multiple MQTT servers published simultaneously.
-   Fixed the issue where 4G WebSocket might cause memory leaks.
-   Resolved the initial 4G startup issue where MQTT could not connect and send messages.
-   Fixed the problem where reading power information might return zero.

**Optimizations**
-   Adjusted the overall threshold minimum to 0.05.
-   Enhanced cascading functionality.
-   Modified the MQTT protocol topic definition to merge all channels and sensors into one package, reducing network latency.
-   Adjusted the frequency of power information, sensor, network status, and device information transmissions.
-   Improved the MQTT client ID generation to be random.
-   Optimized MQTT server information modification to automatically disconnect.
-   Enhanced the MQTT reconnection mechanism with ping connection status detection.
-   Streamlined the web interface for MQTT modifications.
-   Improved multi-network card switching functionality.
-   Optimized the subscription instruction sending method to subscribe after a successful connection.

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# V1.2.0 (2025-06-16 - 2025-06-26)

**New Features**
-   Added SNMP interface for retrieving F407 power information.

**Bug Fixes**
-   Fixed GPIO conflict for dry contact sensors on the LCD screen.
-   Resolved issue with batch threshold setting failure.
-   Fixed SNMP GETNEXT command errors.

**Optimizations**
-   Optimized three-phase engineering configuration parameters.
-   Streamlined firmware by removing unused functional modules.

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# V1.1.9 (2025-06-01 - 2025-06-15)

**New Features**
-   Added support for displaying CO₂ sensor data.
-   Added Bootloader secure jump verification for 4-channel boards.

**Bug Fixes**
-   Fixed sensor disconnection issue caused by rapid plugging/unplugging.
-   Resolved MQTT device number type error.

**Optimizations**
-   Optimized alarm interface interaction logic.
-   Reduced Websocket push data volume.

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# V1.1.8 (2025-05-16 - 2025-05-31)

**New Features**
-   Added batch threshold setting function for F407 sensors.
-   Supports hot-switching between three-phase/single-phase operating modes.

**Bug Fixes**
-   Fixed GPIO conflict during RGB meter head initialization.
-   Resolved SNMP sensor list retrieval exception.

**Optimizations**
-   Optimized QT startup page loading speed.
-   Added Bootloader upgrade file verification mechanism.

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# V1.1.7 (2025-05-01 - 2025-05-15)

**New Features**
-   Supports dry contact alarms for multiple sensors.
-   Added channel timed Websocket push function.

**Bug Fixes**
-   Fixed LCD data display conflict for multiple sensors.
-   Solved crash issue caused by MQTT connection failure.

**Optimizations**
-   Optimized 4G activation configuration, reducing CPU usage.
-   Shortened sensor offline determination time (3 timeouts).

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# V1.1.6 (2025-04-16 - 2025-04-30)

**New Features**
-   Supports circuit breaker status detection.
-   Added support for 4-channel / 1-channel self-locking control boards.

**Bug Fixes**
-   Fixed three-phase phase loss detection anomaly.
-   Resolved NTP synchronization failure for IP meter heads.

**Optimizations**
-   Optimized Modbus TCP communication timeout handling.
-   Reduced memory usage for historical record storage.

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# V1.1.5 (2025-04-01 - 2025-04-15)

**New Features**
-   Supports 125A engineering configuration.
-   Added dual live wire version for three-phase input to single-phase output.

**Bug Fixes**
-   Fixed Web threshold upper limit (max 999999).
-   Solved QT interface misalignment issue for three-phase data display.

**Optimizations**
-   Optimized dual live wire power factor calculation algorithm.
-   Simplified product file reading logic.

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# V1.1.4 (2025-03-16 - 2025-03-31)

**New Features**
-   Supports reverse control for magnetic latching relays.
-   Added hardware support for 7-channel / 3-channel boards.

**Bug Fixes**
-   Fixed dual live wire threshold enable anomaly.
-   Resolved STS control logic conflict.

**Optimizations**
-   Unified parameter configuration for DC control boards.
-   Optimized stability of cascaded data reading.

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# V1.1.3 (2025-03-01 - 2025-03-15)

**New Features**
-   Supports SNMP power threshold management.

**Bug Fixes**
-   Fixed crash issue on legacy three-phase control boards.
-   Resolved IP meter head database access conflict.

**Optimizations**
-   Optimized synchronization between channel control and web data.
-   Reduced EEPROM write frequency on DC control boards.

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# V1.1.2 (2025-02-16 - 2025-02-28)

**New Features**
-   Supports App-side version number upload.
-   Added dual-stack (IPv4/IPv6) detection for 4G networks.

**Bug Fixes**
-   Fixed Bootloader verification failure issue for new 5-channel/4-channel boards.

**Optimizations**
-   Optimized QT interface layout, unified sensor unit display.
-   Compressed F407 basic data structure (256 → 92 bytes).

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# V1.1.1 (2025-02-01 - 2025-02-15)

**New Features**
-   Added web configuration items for 4G-related functions.
-   Added dual live wire single-phase control matching logic.

**Bug Fixes**
-   Fixed WiFi SNMP protocol unavailability.
-   Solved stack overflow issue caused by frequent three-phase data reading.

**Optimizations**
-   Optimized Websocket push cycle (0.5 seconds/push).
-   Added display support for CO₂ sensors.

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# V1.1.0 (2025-01-16 - 2025-01-31)

**New Features**
-   Supports STS (Static Transfer Switch) temperature monitoring.
-   Added magnetic latching relay control logic.

**Bug Fixes**
-   Fixed upgrade function anomaly on single-phase control boards.
-   Resolved STS Modbus communication out-of-bounds issue.

**Optimizations**
-   Optimized Bootloader jump verification process.
-   Reduced stack memory usage on three-phase control boards.

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# V1.0.9 (2025-01-01 - 2025-01-15)

**New Features**
-   Added network reset function (hold Up/Down keys to restore default configuration).

**Bug Fixes**
-   Fixed dual live wire project configuration error.
-   Resolved QT interface sensor unit display anomaly.

**Optimizations**
-   Optimized MQTT data structure (power status upload).
-   Streamlined firmware size by removing redundant modules.

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# V1.0.8 (2024-12-16 - 2024-12-31)

**New Features**
-   Supports channel "Monitor Only" mode.
-   Added 4G SMS alarm push function.

**Bug Fixes**
-   Fixed GPIO conflict between RGB meter head and LCD screen.
-   Resolved INI configuration deadlock issue.

**Optimizations**
-   Optimized 4G network detection mechanism.
-   Shortened sensor serial port read timeout to improve response speed.

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# V1.0.7 (2024-12-01 - 2024-12-15)

**New Features**
-   Supports three-phase total detection function.
-   Added dynamic DHCP allocation for Modbus TCP addresses.

**Bug Fixes**
-   Fixed leak sensor display error on military 8-inch screen.
-   Solved QT interface rotation direction anomaly.

**Optimizations**
-   Optimized communication efficiency between QT and PDU message queues.

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# V1.0.6 (2024-11-16 - 2024-11-30)

**New Features**
-   Added circuit breaker trip alarm function.
-   Supports control board firmware upgrade via web interface (includes QR code generation).

**Bug Fixes**
-   Fixed threshold import exception.
-   Resolved sensor data garbled text issue on IP meter heads.

**Optimizations**
-   Optimized packaging scripts for new hardware compatibility.
-   Refactored Web interface layout, fixed display misalignment.

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# V1.0.5 (2024-11-01 - 2024-11-15)

**New Features**
-   Added configuration file import/export interfaces.
-   Supports configuring meter face maximum values for voltage/current/power.

**Bug Fixes**
-   Fixed memory leak in three-phase input to single-phase output configuration.
-   Resolved NTP synchronization failure.

**Optimizations**
-   Removed database dependency on `product_id` to avoid configuration change anomalies.
-   Added slave temperature sensor data display to IP meter heads.

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# V1.0.4 (2024-10-16 - 2024-10-31)

**New Features**
-   Supports SNMP TRAP function (sensor/power overload alarms).
-   Added Websocket encrypted connection and HTTPS access.

**Bug Fixes**
-   Fixed crash issue caused by cascaded data anomalies.
-   Resolved SNMP configuration invalid error.

**Optimizations**
-   Optimized upgrade script push logic.
-   Sensor history records now displayed in reverse chronological order (last 60 entries).

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# V1.0.3 (2024-10-01 - 2024-10-15)

**New Features**
-   Supports Modbus TCP cascading communication and dynamic slave scanning.
-   Integrated Libcurl for email alarm functionality.
-   Added NTP time synchronization function.

**Bug Fixes**
-   Fixed time zone setting error.
-   Resolved database anomalies caused by configuration file ID changes.

**Optimizations**
-   Optimized NTP interface to support both IP and domain name modes.
-   Refactored thread management interface.

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# V1.0.2 (2024-10-01 - 2024-10-07)

**New Features**
-   Control boards support firmware upgrade logic.
-   Added time range restriction function for database queries.

**Bug Fixes**
-   Fixed high CPU usage when no channels are scanned.
-   Solved three-phase total data reading anomaly.
-   Fixed single-phase/DC power consumption calculation error.

**Optimizations**
-   Increased maximum voltage display limit to 500V.
-   Optimized configuration file import/export interfaces.
-   Resolved button display issues caused by XML limitations.
-   Improved sensor historical status storage logic.

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# V1.0.1 (2024-09-16 - 2024-09-30)

**New Features**
-   Supports synchronized three-phase data display on QT screen.
-   Added power consumption reset function for DC/single-phase devices.
-   Added watchdog mechanism to enhance system stability.
-   Supports independent configuration for DC overload alarm/action.

**Bug Fixes**
-   Fixed DNS configuration error.
-   Solved issue where alarm threshold flags were not updated after reset.
-   Fixed single-phase/DC total power consumption calculation error.
-   Resolved file export function bug.
-   Optimized database query efficiency (default time range reduced to 1 week).

**Optimizations**
-   Optimized power consumption calculation algorithm.
-   Changed meter head alarm identifiers from `ABC` to `L123`.
-   Adapted to dry contact sequence mapping requirements.
-   Web interface upgraded to version 9.28, supporting Alibaba Cloud MQTT.

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# V1.0.0 (2024-09-01 - 2024-09-15)

**New Features**
-   Adapted to Alibaba Cloud MQTT service.
-   Supports CO₂ sensor data reading.
-   Added sensor history record query interface.
-   Customized Web pages for clients (separated by user directory).

**Bug Fixes**
-   Fixed sensor historical record storage anomaly.
-   Solved three-phase frequency calculation error.
-   Fixed power consumption reset function failure.
-   Fixed dual-head sensor threshold setting anomaly.
-   Resolved delay issue caused by switch detection board scan timeout.

**Optimizations**
-   Merged RAM/ROM checks into a unified interface.
-   Optimized temperature/humidity sensor threshold retrieval logic.
-   Updated Web to version 9.28.
-   Added null checks to prevent out-of-bounds crashes.