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OpenTherm support for ESPHome

License: MIT License

Python 32.84% C++ 67.16%

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foxey ananyevgv pin26 remybohmer

esphome-opentherm's Issues

Add configurable delay on start of opentherm

My bowler need small pause (about 1-2 seconds) to send ch enabe, temperature etc after an opetherm initialisation. Now I make it using delay in on_boot automation. Wait and set value that I need from saved globals

on_boot:
then:
- delay: 2s
- lambda: |-
if( id(ch_sw_save) ) id(ch_sw).turn_on();
if( id(ch2_sw_save) ) id(ch2_sw).turn_on();
if( id(dhw_sw_save) ) id(dhw_sw).turn_on();

It's better to have simple init_delay settings in opentherm component

ch2_enabled

Add ch2_enabled, for boilers with indirect heating, the inclusion of a second heating circuit is required (Baxi Nuvola-3 b40)

add enable OTC

MessageID::Status enableOutsideTemperatureCompensation << 3

ADD Summer/winter mode DHW blocking

In OT3.0 the HB flag8 have these description:
bit:description {clear/0, set/1}
0: CH enable [CH is disabled, CH is enabled]
1: DHW enable [DHW is disabled, DHW is enabled]
2: Cooling enable [Cooling is disabled, Cooling is enabled]
3: OTC active [OTC not active, OTC is active]
4: CH2 enable [CH2 is disabled, CH2 is enabled]
5: Summer/winter mode [winter mode active, summer mode active]
6: DHW blocking [DHW unblocked, DHW blocked]

add Message, CONFIGURATION, VERSION

Good afternoon, some boilers require messaging, otherwise they cannot be controlled:

OpenThermMessageType::READ_DATA, OpenThermMessageID::BOILER_CONFIGURATION, 0xFFFF);
uint8_t SlaveMemberIDcode = respons3 >> 0 & 0xFF;
OpenThermMessageType::WRITE_DATA, OpenThermMessageID::DEVICE_CONFIGURATION, SlaveMemberIDcode);

OpenThermMessageType::READ_DATA, OpenThermMessageID::BOILER_VERSION, 0);
OpenThermMessageType::WRITE_DATA, OpenThermMessageID::DEVICE_VERSION, 0x013F);

Plase add botton to send BLOR command

BAXI bowlers neet BLOR comand to reset an error

Now I use template button with lambda, but it need to remove private: section from your header. It's better to include this button to component

platform: template
name: "BLOR"
icon: "mdi:lock-reset"
on_press:
lambda: |-
opentherm_openthermcomponent->request_(opentherm::OpenThermMessageType::WRITE_DATA, opentherm::OpenThermMessageID::COMMAND, 0x100);

CH\DHW maximum\minimum temperature entities

Temperatures changed on the boiler, are not reflected on gateway without restart
Looks like they are read once during boot.

Error compiling esp8266

With an example config:

esphome:
  name: climatest
  friendly_name: climatest

esp8266:
  board: d1_mini

logger:
api:
ota:
wifi:
  ssid: !secret ssid
  password: !secret PWD

external_components:
  source: github://khenderick/esphome-opentherm
  components: [opentherm]

opentherm:
  read_pin: 4
  write_pin: 5
**The rest is from Example entry for config.yaml:**

I have this compilation error:

INFO ESPHome 2023.5.5
INFO Reading configuration /config/climatest.yaml...
INFO Generating C++ source...
INFO Compiling app...
Processing climatest (board: d1_mini; framework: arduino; platform: platformio/[email protected])
--------------------------------------------------------------------------------
HARDWARE: ESP8266 80MHz, 80KB RAM, 4MB Flash
Dependency Graph
|-- ESPAsyncTCP-esphome @ 1.2.3
|-- ESPAsyncWebServer-esphome @ 2.1.0
|   |-- ESPAsyncTCP-esphome @ 1.2.3
|   |-- Hash @ 1.0
|   |-- ESP8266WiFi @ 1.0
|-- DNSServer @ 1.1.1
|-- ESP8266WiFi @ 1.0
|-- ESP8266mDNS @ 1.2
|-- noise-c @ 0.1.4
|   |-- libsodium @ 1.10018.1
Compiling .pioenvs/climatest/src/esphome/components/opentherm/number/custom_number.cpp.o
Compiling .pioenvs/climatest/src/esphome/components/ota/ota_backend_arduino_esp8266.cpp.o
Compiling .pioenvs/climatest/src/esphome/components/ota/ota_backend_arduino_rp2040.cpp.o
Compiling .pioenvs/climatest/src/esphome/components/ota/ota_backend_esp_idf.cpp.o
Compiling .pioenvs/climatest/src/esphome/components/ota/ota_component.cpp.o
Compiling .pioenvs/climatest/src/esphome/components/sensor/automation.cpp.o
In file included from src/esphome/components/opentherm/number/custom_number.cpp:1:
src/esphome/components/opentherm/number/custom_number.cpp: In member function 'void esphome::opentherm::CustomNumber::dump_custom_config(const char*, const char*)':
src/esphome/components/opentherm/number/custom_number.cpp:31:22: error: initializer fails to determine size of '__pstr__'
   31 |   LOG_NUMBER(prefix, type, this);
src/esphome/core/log.h:94:90: note: in definition of macro 'esph_log_config'
   94 |   esp_log_printf_(ESPHOME_LOG_LEVEL_CONFIG, tag, __LINE__, ESPHOME_LOG_FORMAT(format), ##__VA_ARGS__)
      |                                                                                          ^~~~~~~~~~~
src/esphome/components/number/number.h:14:5: note: in expansion of macro 'ESP_LOGCONFIG'
   14 |     ESP_LOGCONFIG(TAG, "%s%s '%s'", prefix, LOG_STR_LITERAL(type), (obj)->get_name().c_str()); \
      |     ^~~~~~~~~~~~~
src/esphome/core/log.h:185:28: note: in expansion of macro 'LOG_STR_ARG'
  185 | #define LOG_STR_LITERAL(s) LOG_STR_ARG(LOG_STR(s))
      |                            ^~~~~~~~~~~
src/esphome/core/log.h:185:40: note: in expansion of macro 'LOG_STR'
  185 | #define LOG_STR_LITERAL(s) LOG_STR_ARG(LOG_STR(s))
      |                                        ^~~~~~~
src/esphome/components/number/number.h:14:45: note: in expansion of macro 'LOG_STR_LITERAL'
   14 |     ESP_LOGCONFIG(TAG, "%s%s '%s'", prefix, LOG_STR_LITERAL(type), (obj)->get_name().c_str()); \
      |                                             ^~~~~~~~~~~~~~~
src/esphome/components/opentherm/number/custom_number.cpp:31:3: note: in expansion of macro 'LOG_NUMBER'
   31 |   LOG_NUMBER(prefix, type, this);
      |   ^~~~~~~~~~
src/esphome/components/opentherm/number/custom_number.cpp:31:22: error: array must be initialized with a brace-enclosed initializer
   31 |   LOG_NUMBER(prefix, type, this);
src/esphome/core/log.h:94:90: note: in definition of macro 'esph_log_config'
   94 |   esp_log_printf_(ESPHOME_LOG_LEVEL_CONFIG, tag, __LINE__, ESPHOME_LOG_FORMAT(format), ##__VA_ARGS__)
      |                                                                                          ^~~~~~~~~~~
src/esphome/components/number/number.h:14:5: note: in expansion of macro 'ESP_LOGCONFIG'
   14 |     ESP_LOGCONFIG(TAG, "%s%s '%s'", prefix, LOG_STR_LITERAL(type), (obj)->get_name().c_str()); \
      |     ^~~~~~~~~~~~~
src/esphome/core/log.h:185:28: note: in expansion of macro 'LOG_STR_ARG'
  185 | #define LOG_STR_LITERAL(s) LOG_STR_ARG(LOG_STR(s))
      |                            ^~~~~~~~~~~
src/esphome/core/log.h:185:40: note: in expansion of macro 'LOG_STR'
  185 | #define LOG_STR_LITERAL(s) LOG_STR_ARG(LOG_STR(s))
      |                                        ^~~~~~~
src/esphome/components/number/number.h:14:45: note: in expansion of macro 'LOG_STR_LITERAL'
   14 |     ESP_LOGCONFIG(TAG, "%s%s '%s'", prefix, LOG_STR_LITERAL(type), (obj)->get_name().c_str()); \
      |                                             ^~~~~~~~~~~~~~~
src/esphome/components/opentherm/number/custom_number.cpp:31:3: note: in expansion of macro 'LOG_NUMBER'
   31 |   LOG_NUMBER(prefix, type, this);
      |   ^~~~~~~~~~
*** [.pioenvs/climatest/src/esphome/components/opentherm/number/custom_number.cpp.o] Error 1
========================== [FAILED] Took 3.52 seconds ==========================

Hovewer esp32 compiles OK.

How to add custom entities (available OT MSG)?

Is there an easy way to add entities? For example I can read MSG_DHW_FLOW_RATE from my boiler, but no MSG_CH_PRESSURE or MSG_TRET (just removed them from yaml).
.
upd>
I can see continous

[10:35:22][W][opentherm:206]: Received invalid response: UNKNOWN_DATA_ID(28, 0x0000)
[10:35:23][W][opentherm:206]: Received invalid response: UNKNOWN_DATA_ID(18, 0x0000)

in the log.
Removing\commenting in yaml is not enoght, absent entities must be disabled deeper

How to get PID climate to work?

Hi,

I'm trying to make a PID climate thermostat using your code. As far as i know the homeassistant generic thermostat is just a basic on/off thermostat. I tried to use the esphome PID climate component but i am struggling with the heat_output parameter. This expects an output. I tried to set the ch_setpoint_temperature, but this is a number so it's not compatible with the output component.

How would i implement a PID climate using the ch_setpoint_temperature number?

Thanks

Bit errors?

Hi,

Awesome work, best esphome opentherm implementation i have seen yet!

The only issue i have is that a couple times per hour bit errors occur, i tried to make a really solid connection between the boiler and my diyless opentherm shield but the bit errors still occur. Anyone else with the same issue?

Is it maybe possible to implement some sort of error checking?

Thx

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