Add slow parameter to the cover plaform

tetienne commented 4 years ago

Context

Some cover like the io:RollerShutterWithLowSpeedManagementIOComponent from Somfy support two modes when they move: the normal one and the slow one (silent).

Proposal

Add to set_cover_position and async_set_cover_position an optional boolean slow parameter.
Create a flag SUPPORT_SLOW_SPEED

Consequences

It won't change anything for the existing cover platforms. It will avoid to create a dedicated service for this feature. From an end user perspective, it will be possible from the UI to choose how to move the covers (from a simple or double chevron icon for instance). It will also allow to create automation to move quietly the covers during the night or the morning for instance.

tetienne commented 3 years ago

As a workaround currently, we have to use an entity switch to enable or disable the slow/silent mode.

tetienne commented 3 years ago

Here an example of such option switch: https://github.com/iMicknl/ha-tahoma/pull/497

home-assistant / architecture