Feature suggestion - device_model variables display

[George]

Hello!
It would be great to have ability to display some model parameters from device_model property
by using text with alias in props.
Now we can put text @device_model with props name= and it displays the content of property device_model, but it would be cool to have ability to display parameter values, for example:

name=A5 model=summer@name device_model=".model summer@name summer in_offset=[0.0 0.0] in_gain=[1 1] out_gain=1.0 out_offset=0.0" 

and we can print it like this:

@device_model.in_gain name=A5

and result text is in_gain=[1 1]
(or set such behaviour in symbols properties how we do it for instance parameters, not model parameters, on attached screenshot)
I understand that it could be not the super priority, but it could really improve how we visualise the uniq
property of particular instance.

[stefan]

You just need to offload the parameters (param=1234) you want to display out of the device_models attribute and use param=@param inside device_models.
The text @param in the symbol will translate to the value 1234.

See the example below for BETA spice model parameter for a N-ch JFET:

[George]

That's all!? Cool, thank you!

[George]

Is there a way to do that by default in symbol properties in the same way as for instances parameters?

[George]

The only variant that I can see now is to encapsulate each device with model into subcircuit with passing all parameters of the model through .subckt ...

[dick freebird]

I'm encountering a lot of subcircuit-style models (like a NPN
transistor in JI technology, embeds a parasitic PNP or two, and
the parasitics are distributed among the sub-elements under a
symbol, out of sight).

So in this case I would need to figure out, and make relative-
path (using @path I guess) "pick-offs" that include that first
step into the subcircuit. Or maybe, even maths on values
(like if terminal capacitance is the sum of two sub-transistors'
Cjc and Ccs, say).

I'll try to remember to dig up an example to explore this.

[stefan]

George, Can you prepare a small test schematic (or better put the needed files in an empty dir and do a zip / tar file) with the desired feature? You can place text objects in the schematic telling what you expect.

[George]

Hi, attached circuit with embedded symbol.
I want to have some model parameters to be visible, but it should be set as default in component properties (like instance parameter)

[stefan]

George please update xschem and test this slightly modified test schematic (based on tour example.sch)

[George]

Just checked, it works, thank you a lot!