Calculate percent of all rollershutter (in .rules file)

Setup, Configuration and Use Beginners
1

Hello to all! :sunny:

I need to calculate the average position of all rollershutter and then make a decision (if > or < about values).

Here the .items

Rollershutter Rollershutter1 "First [%d %%]" .... { knx = .... }
Rollershutter Rollershutter2 "Second [%d %%]" .... { knx = .... }
…etc…

This is a first step and work correctly (.rules):

if ( Rollershutter1.state > 50 ) {
  #ok!
}

but I need something like this:

if  (((Rollershutter1.state +  Rollershutter2.state + Rollershutter3.state + Rollershutter4.state) /10) > 50 ) {
  #???
}

I’ve tested different syntax without results :frowning:

Is is possibile?

Best regards

Sim

2

I think the easiest way to do this is through a Group.

Group:Rollershutter:AVG gAllShutters

The state of gAllShutters will be the average of the states of all its members.

In the Rules, I think your specific problem is that you may need to cast the state to a DecimalType before you can do math with it.

So your math would look like:

val total = ((Rollershutter1.state as DecimalType) + (Rollershutter2.state as DecimalType) + ...

You should be seeing errors in the logs. That should always be the first place to look when you encounter problems.

3

Hello,

There is no need to do maths with your single items. If you need to compare all your shutter items against a threshold just use the gAllShutters.

if ( (gAllShutters.state as DecimalType) > 20)
{
  // in average all shutters are above 20 (percent)
}

Andreas

4

Thank you for the tips!

I will try this way!

Regards

Sim