Volume step settings not working

[kennymc-c]

Description

I tried a few different volume step settings but the receiver still changes the volume in the default 0.5 steps. I also noticed that the integration disconnects itself after reconfiguration and I have to manually activate it again after completing the setup. I' not using telnet.

How to Reproduce

1. Start reconfigure the integration
2. Set a volume step < 0.5
3. Change the volume

Expected behavior

The volume should be changed in increments of the previously set volume steps

Integration version

0.4.1

Additional context

UCR2_logs_2024-06-22.txt

[zehnm]

The volume steps cannot be freely chosen. This depends on the receiver, and I'm not aware that anything else than multiples of 0.5 is supported.
Once the reconfiguration feature in #43 is implemented, the volume step value can easily be changed to a working value.
Setting a volume step < 0.5 is not allowed, otherwise it's a bug in the web-configurator.

I keep this issue open for now and might change the logic in the integration driver, that the value is rounded up or down to the next 0.5 step, if I don't find any official Denon documentation.

[kennymc-c]

I think I made a mistake in the description and meant larger than 0.5. I have always increased it to a multiple of 0.5.

[zehnm]

I did a bit more testing with my AVR-X2700: only 0.5 is working, then it's just full 1 dB steps (1, 2, 3, 4, ...). Anything between is rounded up for volume down (-1.5 becomes -2) or rounded down for volume up (+1.5 becomes +1).
Unfortunately the Denon AVR protocol manuals are not very clear what is supported. But the volume example also just describes the 0.5 step:

It's probably best to only allow the values 0.5, 1, 2, 3, 4, .. 10