'send custom' to send data to node but is there a possibilty for pull mechanisme

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Re: Connecting a variable to a mysensors child

I’m trying the approach as mentioned in this thread obove.
I use this rule:

If $weerstation.Temperatuur gets updated then send custom "V_VAR1" nodeid: "100" sensorid: "1" cmdcode: "$weerstation.Temperatuur"

In the Display node (100) I have following receive function to fetch the message:

void receive(const MyMessage &message)
{
  // Explore message
    switch (message.sensor)
    {
      case 0:  // Humidity sensor
      {
        lcd.setCursor(13, 1);  
        lcd.print(message.getFloat());
        break;
      }
      case 1:  // Temperature sensor
      {   
        lcd.setCursor(13, 0);  
        lcd.print(message.getFloat());
        break;
      }
      case 2:  // Light sensor
      {
        lcd.setCursor(10, 3);  
        lcd.print(message.getUInt());
        break;
      }
      case 3:  // Barometer sensor
      {   
        lcd.setCursor(10, 2);  
        lcd.print(message.getFloat());
        break;
      }
      case 4:  // Barometer Temperature sensor
      {
        break;
      }
      case 5:  // Rain sensor
      {
        break;
      }
    }
}

this is working fine for case 1: temperature.

Where do I need the V_VAR1 for?

This method I would call a push mechanisme: controller is sending to node.
Is there also a pull mechanisme possible where I would like the node to request a value from the controller?

No this is not supported yet.

I would like this too and have already created an issue on github before, so I hope someone can implement this…

I think it is possible, but you have to change the Arduino script on your node.
With the V_VAR1 you can send what you want so you can send somethink like:

0-64.3
or
1-20.3
or
2-2458
ect.

So you have to look in your Arduino script what number is send befor the seperator

-

so you can differ your sensortype and all after the seperator is your sensor value.

@V1per as you can see in my post I can do this already with the info in the ‘send custom’ command since the sensor Id is in there (see my arduino receive function above).

The issue is about let the node do a request to Pimatic rather then letting Pimatic push the data.

Ok, I see. I have misunderstand what you mean.

But I think this is also possible. Because you can emulate maybee a doorcontact at your sensor and when pimatic became the info that the doorcontact is close you can send per rule from pimatic the infos you want.

@V1per Yes, indeed. But always in having to do something in Pimatic (make a rule).