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EMS-ESP Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

[1.6.0] 2019-03-24

Added

  • system command to show ESP8266 stats
  • crash command to see stack of last system crash, with .py files to track stack dump (compile with -DCRASH)
  • publish dallas external temp sensors to MQTT (thanks @JewelZB)
  • shower timer and shower alert options available via set commands
  • added support for warm water modes Hot, Comfort and Intelligent (issue 67)
  • added set publish_time to set how often to publish MQTT
  • support for SM10 Solar Module including MQTT (issue 77)
  • refresh command to force a fetch of all known data from the connected EMS devices

Fixed

  • incorrect rendering of null temperature values (the -3200 degrees issue)
  • OTA is more stable
  • Added a hack to overcome WiFi power issues in arduino core 2.5.0 libraries causing constant wifi re-connects
  • Performance issues with telnet output

Changed

  • included various fixes and suggestions from @nomis
  • upgraded MyESP library with many optimizations
  • test_mode renamed to silent_mode
  • set wifi replaced with set wifi_ssid and set wifi_password to allow values with spaces
  • EMS values are stored in the raw format and only converted to strings when displayed or published, removing the need for parsing floats
  • All floating point temperatures are to one decimal place (issue 79)

[1.5.6] 2019-03-09

Added

  • test_mode option

Changed

  • upgraded MyESP library
  • minor changes

[1.5.5] 2019-03-07

Fixed

  • Support the latest ArduinoJson v6 and espressif8266 2.0.4 libraries (in PlatformIO do a pio lib update and pio update)

Changed

  • MQTT keep alive to 2 minutes (60 seconds was just too short for slower networks)
  • Improved MQTT startup time
  • Setting wifi or mqtt settings are immediate, no need to restart the ESP
  • Text changes in the help

Added

  • Show if MQTT is connected
  • Show version of MyESP (the custom MQTT, Wifi, OTA, MDNS, Telnet library)
  • EMS-OT OpenTherm connector

[1.5.4] 2019-03-03

Changed

  • MQTT keep alive changed from 5 minutes to 1 minute

Added

  • Callback for OTA. This is used to disable EMS bus during a firmware OTA update, which caused problems with the latest ESP89266 core libraries
  • Added rough estimate of WiFi signal strength to info page
  • Added the build time & date to the info page (optional in platformio.ini)

[1.5.3] 2019-02-22

Changed

  • Support for latest esp8266 arduino core version 2.5.0 and platform espressif8266 version 2.0.0
  • Added board type to the info screen

Added

  • Improved MQTT LWT (Last Will Testament). Uses payload called 'online' and 'offline'. See emsesp#57
  • Added ESP32 support to MyESP library
  • Added Bosch Easy thermostat, Buderus Logamax U122
  • Support for changing boiler wwtemp via MQTT (merge #58 from egrekov). thanks!

Removed

  • Custom MDNS support. Now handled much better in the new esp core under OTA

[1.5.2] 2019-02-04

Changed

  • Change wifi settings using the set wifi <ssid> <password> command

Added

  • Added incoming MQTT "TOPIC_BOILER_WWACTIVATED" to set the warm water on/off. Payload is 1 or 0. See issue.
  • Added the list of all MQTT topics to the README file

[1.5.1] 2019-02-03

Fixed

  • issue with Serial monitoring conflicting with UART when both running
  • Fixed typo with -D settings in the example platformio.ini

Changed

  • thermostat temp now except floats (e.g. 20.5). Some thermostats may round up or down if they use 0.5 intervals.

[1.5.0] 2019-02-03

Added

  • Support for RC10 thermostat
  • New command set serial

Changed

  • Improved Tx logic. Retries are more efficient and startup is faster and less error prone.
  • "# Rx telegrams" and "# Tx telegrams" show number of successful Reads and Writes initiated by the user or automatically by the code. This makes it easy to see if the Tx is working.
  • Some refactoring in preparation for the EMS+ support coming soon

Removed

  • Removed the poll and tx commands
  • DEBUG_SUPPORT. Now controlled with the 'set serial' command
  • removed MQTT and WIFI settings from my_config.h. These have to be set either within the application (using set) or hardcoded in platformio.ini You can now check in my_config.h without everyone seeing your passwords!
  • TxCapable removed from info

[1.4.1] 2019-01-29

Added

  • The led pin, dallas pin and both thermostat and boiler type IDs can be set with the application, and stored.

Changed

  • some minor improvements to autodetect

[1.4.0] 2019-01-27

Changed

  • last will MQTT topic prefixed with a header like the rest of the topics
  • All double and float numbers rendered to 2 decimal places (precision = 2)
  • Default logging set to None when starting a telnet session

Added

  • Added support for external Dallas sensors (DS1822, DS18S20, DS18B20, DS1825). See readme
  • Added UBAParametersMessage type to fetch boiler modulation min & max values
  • Report shows system load average

[1.3.2] 2019-01-23

Fixed

  • Handle thermostats that don't have builtin temperature sensors when showing current temperature (emsesp#18 (comment))

Changed

  • Improved way to identify if the EMS bus is connected
  • Improved 'types' command to show more details
  • Improved auto detect of thermostat types

Added

  • Some more devices like the Nefit Topline & RC310 thermostat recognition
  • Added a check to see Tx is possible. See 'Tx Capable' under the 'info' screen

Removed

  • Removed MY_BOILER_MODELID from my_config.h. It's always hardcoded.

[1.3.1] 2019-01-12

Fixed

  • telnet commands with set are no longer forced to lower case

Changed

  • Custom settings (e.g set led) moved outside MyESP
  • Moved all MQTT to my_config.h making it independent from Home Assistant

Added

  • MQTT keep alive, last will testament and other settings all configurable in my_config.h
  • RC35: MQTT day/night/auto mode; sets setpoint temperature in type 0x3D depends on current night/day Mode (@SpaceTeddy) #33

[1.3.0] 2019-01-09

Changed

  • Renamed project from EMS-ESP-Boiler to EMS-ESP since it's kinda EMS generic now
  • Support for RC20F and RFM20 (emsesp#18)
  • Moved all EMS device information into a separate file ems_devices.h so no longer need to touch ems.h
  • Telnet commands can be strings now and output is suspended when typing

Removed

  • Removed SHOWER_TEST
  • Removed WIFI and MQTT credentials from the platformio.ini file

Added

  • Settings are saved and loaded from the ESP8266's file system (SPIFFS). Can be set using the 'set' command
  • Improved support when in Access Point mode (192.168.4.1)
  • pre-built firmwares are back

[1.2.4] 2019-01-04

Changed

  • Scanning known EMS Devices now ignores duplicates (emsesp#30)
  • ServiceCode stored as a two byte char
  • Support for RC20F and RFM20 (emsesp#18)

[1.2.3] 2019-01-03

Fixed

  • Can now hardcode Boiler and Thermostat types in my_config.h to bypass auto-detection
  • Fixed MQTT subscribing to Heating and Hot Water active topics
  • Fixed for listening to incoming MQTT topics (emsesp#27)
  • Fixed handling of current temperature on an RC35-type thermostat that doesn't have a sensor (emsesp#18)

[1.2.2] 2019-01-02

Fixed

  • Issues in 1.2.1 (see emsesp#25)
  • Logic for determining if there is activity on the EMS bus and using the onboard LEDs properly

[1.2.1] 2019-01-02

Fixed

  • Only process broadcast messages if the offset (byte 4) is 0. (emsesp#23)
  • Improved checking for duplicate sent Tx telegrams by comparing CRCs
  • Removed distiquishing between noise on the line and corrupt telegrams (emsesp#24)

[1.2.0] 2019-01-01

Fixed

  • Incorrect indenting in climate.yaml (thanks @mrfixit1)
  • Improved support for slower WiFi connections
  • Fixed issue with OTA not always giving back a completion response to platformio
  • Fixed issue with repeating reads after a raw mode send
  • Fixed handling of long integers (thanks @SpaceTeddy)

Added

  • added 'dout' flashmode to platformio.ini so OTA works now when uploading to a Wemos D1 Pro's or any other board with larger flash's
  • added un tested supporting RC35 type of thermostats
  • Try and discover and set Boiler and Thermostat types automatically
  • Fetch UBATotalUptimeMessage from Boiler to get total working minutes
  • Added check to see if bus is connected. Shown in stats page
  • If no Wifi connection can be made, start up as a WiFi Access Point (AP)
  • Report out service codes and water-flow pull-request. Thanks @Bonusbartus

Changed

  • Build option is called DEBUG_SUPPORT (was USE_SERIAL)
  • Replaced old ESPHelper with my own MyESP library to handle Wifi, MQTT, MDNS and Telnet handlers. Supports asynchronous TCP and has smaller memory footprint. And moved to libs directory.
  • Simplified LED error checking. If enabled (by default), solid means connected and flashing means error. Uses either an external pull-up or the onboard ESP8266 LED.
  • Improved Telnet debugging which uses TelnetSpy to keep a buffer of previous output
  • Optimized memory usage & heap conflicts, removing nasty things like strcpy, sprintf where possible
  • Improved checking for tap water on/off (thanks @Bonusbartus)

Removed

  • Time and TimeLib's. Not used in code.
  • Removed build option MQTT_MAX_PACKAGE_SIZE as not using the PubSubClient library any more
  • Removed all of Espurna's pre-built firmwares and instructions to build. Keeping it simple.

[1.1.1] 2018-12-23

Removed

  • Espurna build notes and ready made firmware

[1.1.0] 2018-12-22

Fixed

Added

Changed

  • Improved overall formatting of logging
  • Include app name and version in telnet help
  • Improved method to switch off hot tap water in Shower Alert
  • Telnet P and M commands have changed
  • Enabling Logging in telnet is now the 'l' command
  • Logging is set back to None when telnet session closes
  • Improved fetching of initial boiler values to post to MQTT at startup
  • Improved handling and retrying of write/Tx commands

Removed

  • Hid access from telnet to the Experimental custom function command 'x'
  • Tx and Rx stats have gone from the stats page, as they were pretty meaningless
  • Removed NO_TX define in platformio and replaced with system parameter 'command X'
  • Removed -DDEBUG option in build
  • Removed wwtemp MQTT messages to set the boiler temp. You'll never miss it.
  • Removed LEDs for Tx, Rx and Err. Too many flashing lights and it drains the current.
  • Removed capturing of last Rx and Tx times
  • Support for older RC20 thermostats

Known Issues

  • There's a nasty memory leek when in telnet's verbose mode with sending which causes the EMS to reset when running for a while.

[1.0.1] 2018-09-24

  • Initial stable version

[0.1.0] 2018-05-14

  • Initial development version