knx: Improvement for DPT 2 (num instead of list)

[msinn]

This issue is moved over from the core repo. The complete issue can be read over there: smarthomeNG/smarthome#291

To easily change DPT 2 knx entries via VISU it would be more comfortable to set priorities not only as lists but also as a number. The ETS converts simple numbers to lists as follows:
0 = [0,0]
1 = [0,1]
2 = [1,0]
3 = [1,1]

Such an internal conversion for DPT2 items would be very nice or are there any reasons this is a bad idea?

[Morg42]

Not sure if this is still an issue, but after reading through all the earlier discussion, I would also prefer variant two, the "environment-aware cast". It seems more elegant, more natural and more pythonic.

Not knowing a real use-case, this might not be helpful for the original problem ;) but seeing as this is quite old and seems unresolved - and above that, simple to implement, we could go ahead and decide, and then close the issue.

[onkelandy]

It's for sure still an issue. I solved it by using this logic: https://smarthomeng.github.io/dev_doc/beispiele/logiken/beispiel_dpt2.html

However, an internal solution would be appreciated. If we could go for something like that smarthomeNG/smarthome#291 (comment) it would be fine imho.

[onkelandy]

How do we tackle this..? The last idea was to keep hands off knx_dpt 2 (and 3?) in the plugin but use the item conversion, correct..? I am honestly not sure where to implement that exactly. Does that still need to be done in the knx plugin?