Home Assistant HVAC Serial gateway (fan speed)

[Willie-wortel]

Hi there,

Can someone confirm that a setup with Serial Gateway using local connected HVAC sensor should work in Home Assistant? Especially in regards to the V_HVAC_SPEED variable?

Also, I'm using an Arduino micro (Atmega32u4) to test this. Sometimes I see that a heater entity is added, but it does not support V_HVAC_SPEED variable, only the HVAC state.

It seems the same problem as described here: link!

The code I'm using:

// Enable serial gateway
#define MY_GATEWAY_SERIAL
#define MY_BAUD_RATE 38400

#include <MySensors.h>
#define CHILD_ID_HVAC 0

#define SN "Test sketch"
#define SV "2.3.2"

MyMessage msgHVACSpeed(CHILD_ID_HVAC, V_HVAC_SPEED);
MyMessage msgHVACSetPointC(CHILD_ID_HVAC, V_HVAC_SETPOINT_COOL);
MyMessage msgHVACFlowState(CHILD_ID_HVAC, V_HVAC_FLOW_STATE);

String  MODE_STATE_TXT;
String  FAN_STATE_TXT;
int     FAN_STATE;
int     TEMP_STATE;
bool    initialValueSent = false;

void setup()
{
  // Setup locally attached sensors
  //pinMode(LED_BUILTIN, OUTPUT);
}

void presentation()
{
  // Present locally attached sensors
  sendSketchInfo(SN, SV);
  present(CHILD_ID_HVAC, S_HVAC, "Thermostat");  
}

void loop()
{
  // Send locally attached sensor data here
  
  if (!initialValueSent) 
  {
    FAN_STATE_TXT = "Min";         // default fan start state
    TEMP_STATE = 20;               // default start temperature
    MODE_STATE_TXT = "CoolOn";     // default mode state

    send(msgHVACSpeed.set(FAN_STATE_TXT.c_str()));
    send(msgHVACSetPointC.set(TEMP_STATE));
    send(msgHVACFlowState.set(MODE_STATE_TXT.c_str()));
    
    initialValueSent = true;
  }
  
  //wait(1000);
 
}

void receive(const MyMessage &message) 
{
  if (message.isAck()) 
  {
     //Serial.println("This is an ack from gateway");
     return;
  }

  //Serial.print("Incoming message for: ");
  //Serial.print(message.sensor);

  String recvData = message.data;
  recvData.trim();

  //Serial.print(", New status: ");
  //Serial.println(recvData);
  switch (message.type) 
  {
    case V_HVAC_SPEED:
      //Serial.println("V_HVAC_SPEED");

      if(recvData.equalsIgnoreCase("auto")) FAN_STATE = 0;
      else if(recvData.equalsIgnoreCase("min")) FAN_STATE = 1;
      else if(recvData.equalsIgnoreCase("normal")) FAN_STATE = 2;
      else if(recvData.equalsIgnoreCase("max")) FAN_STATE = 3;
      FAN_STATE_TXT = recvData;
    break;
  }
  //sendHeatpumpCommand(); // apply setting!
  sendNewStateToGateway();
}

void sendNewStateToGateway() 
{
  /*
  Serial.println("Status update send to HA:");
  Serial.println("*************************");
  Serial.println("Mode = " + MODE_STATE_TXT + "(" + (String)MODE_STATE + ")");
  Serial.println("Fan = " + FAN_STATE_TXT + "(" + (String)FAN_STATE + ")");
  Serial.println("Temp = " + (String)TEMP_STATE);
  */
  
  send(msgHVACSpeed.set(FAN_STATE_TXT.c_str()));

}