Need to be able to define default values for fields and have them in the database and queries

[bzbarsky-apple]

The following can have default values specified in the matter (to be used of the field is missing):

• Attributes (default values already supported in ZAP, but this is about getting the spec defined default, not the one in the ZAP config, because this default needs to be usable by the client side of the cluster).
• Command fields.
• Struct fields.
• Event fields.

There is no place for these default values in the database schema, as far as I can see, so no way to use them in templates to codegen code that initializes things to defaults (say).

@mrjerryjohns

[bzbarsky-apple]

So to be clear, for attributes I'd want a default value to be available when doing zcl_attributes. It looks like that does work right now, actually, so we only need defaults added for command fields, struct fields, and event fields.

[brdandu]

From @bzbarsky-apple : This is in fact blocking the SDK being able to implement the Matter spec properly. And has been for years....