findings V 1.2.1

[SpaceTeddy]

dear Paul,

Following items I've found in 1.2.1:

info:

• my boiler and Thermostat is automatically recognized. 👍
• OTA update is working 👍
• no corrupt telegram messages 👍

minor:

• copy paste issue for RC35 boiler commands. RC30 defines are used instead RC35 defines
  EMS_MODEL_RC35, EMS_TYPE_RC30Set, "RC35Set", _process_RC35Set}, {EMS_MODEL_RC35, EMS_TYPE_RC30StatusMessage, "RC35StatusMessage", _process_RC35StatusMessage},}

modifications:
ems.cpp

• activated ES73 thermostat for read/write
  {EMS_MODEL_ES73, EMS_THERMOSTAT_READ_YES, EMS_THERMOSTAT_WRITE_YES}
• added same ES73 commands like RC35
  // ES73 {EMS_MODEL_ES73, EMS_TYPE_RCOutdoorTempMessage, "RCOutdoorTempMessage", _process_RCOutdoorTempMessage}, {EMS_MODEL_ES73, EMS_TYPE_RCTime, "RCTime", _process_RCTime}, {EMS_MODEL_ES73, EMS_TYPE_RC35Set, "RC35Set", _process_RC35Set}, {EMS_MODEL_ES73, EMS_TYPE_RC35StatusMessage, "RC35StatusMessage", _process_RC35StatusMessage}, {EMS_MODEL_ES73, EMS_TYPE_UBASetPoints, "UBASetPoints", _process_SetPoints},
• added ES73 ID in ems_getThermostatValues()
  else if (model_id == EMS_MODEL_ES73) { ems_doReadCommand(EMS_TYPE_RC35StatusMessage, type); // to get the setpoint temp ems_doReadCommand(EMS_TYPE_RC35Set, type); // to get the mode }
• added ES73 ID in ems_setThermostatTemp(float temperature)
  else if (model_id == EMS_MODEL_ES73) { EMS_TxTelegram.type = EMS_TYPE_RC35Set; EMS_TxTelegram.offset = EMS_OFFSET_RC35Set_temp; EMS_TxTelegram.comparisonPostRead = EMS_TYPE_RC35StatusMessage; // call a different type to refresh temperature value }
• added ES73 ID in ems_setThermostatMode(uint8_t mode)
  else if (model_id == EMS_MODEL_ES73) { EMS_TxTelegram.type = EMS_TYPE_RC35Set; EMS_TxTelegram.offset = EMS_OFFSET_RC35Set_mode; }

boiler.ino

• added selFlowTemp, extTemp in mqtt boiler_data
  rootBoiler["selFlowTemp"] = _float_to_char(s, EMS_Boiler.selFlowTemp); rootBoiler["outdoorTemp"] = _float_to_char(s, EMS_Boiler.extTemp);

question:

• I use the MQTT message for my home server software (fhem). Unfortunately I really don't know how to set the thermostat temperature in type 0x3D if the thermostat is set in "Auto" Mode. In 0x3D you can set the night/day/holiday temperature with offset 0x01/0x02/0x03. Therefore it could be a possibility to read out the "day mode" in 0x3E and send it via mqtt
• get day mode:
  #define EMS_OFFSET_RC35Get_mode_day 1 // position of thermostat day mode
  add
  uint8_t mode_day; // 0=night, 1=day
  in struct _EMS_Thermostat

void _process_RC35StatusMessage(uint8_t * data, uint8_t length)
uint8_t v = data[EMS_OFFSET_RC35Get_mode_day];
EMS_Thermostat.mode_day = bitRead(v, 1); //get day mode flag
...

... write to setpoint temperature offset in void ems_setThermostatTemp(float temperature)

} else if (model_id == EMS_MODEL_RC35) {
EMS_TxTelegram.type = EMS_TYPE_RC35Set;
EMS_TxTelegram.offset = EMS_Thermostat.mode_day +1; //daymode value +1
EMS_TxTelegram.comparisonPostRead = EMS_TYPE_RC35StatusMessage; // call a different type to refresh temperature value
} else if (model_id == EMS_MODEL_ES73) {
EMS_TxTelegram.type = EMS_TYPE_RC35Set;
EMS_TxTelegram.offset = EMS_Thermostat.mode_day +1; //daymode value +1
EMS_TxTelegram.comparisonPostRead = EMS_TYPE_RC35StatusMessage; // call a different type to refresh temperature value
}
...

👍

[proddy]

Good finds! thanks. I've updated the code. I will dig into the RC35 messaging. There's a lot already published on these telegrams so it should be quite easy. Only thing is I can't really test it. I may start updating my dev branch in GitHub with some experimental code.

[proddy]

So for the RC35 modes, you can read them using 0x3E (EMS_TYPE_RC35StatusMessage). The Holiday mode is bitRead(data[0], 5), Summer Mode is bitRead(data[1],0) and Day Mode is bitRead(data[1],1).

To set the temperature values you would use 0x3D (EMS_TYPE_RC35Set) with data[3] for Summer Temp, data[2] for Day Temp and data[1] for Night Temp.

This is all pretty straight forward to implement. Thing is I can't really test it. Would you mind closing this issue (since its a bug) and open a feature request for the mode support?

[SpaceTeddy]

closed