Support for programmatic spice model declaration

PySpice provides the ability to programmatically declare models with the DeviceModel class. For example, to include the generic BJT model at the beginning of the BJT chapter (chapter 8) in the NgSpice manual, you could do

DeviceModel(name="QMOD1", modele_type="NPN level=2")

While there is an obvious workaround for this in skidl (write it to a file and reference it like any other spice model), this adds a layer of difficulty to using simple, generic models and adds an even greater level of difficulty for programmatic generation of models.

Would it be possible to add a skidl wrapper around this pyspice functionality? It’s technically possible to specify the model from the output of generate_netlist, but of course at this point it’s too late.

Thanks!

[matthuszagh]

True, it might be better to auto-generate the name.

[xesscorp]

You can still use a string for the model, but in that case it’s assumed to be a file name where the .model statement is stored. It doesn’t refer to the name assigned in the XspiceModel or DeviceModel. In fact, maybe those names shouldn’t have to be there at all since they’re not used, and SKiDL could just assign some automatically-generated model names that the user would never see unless the SPICE code was viewed.