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sde1000 / python-dali

Library for controlling DALI lighting systems
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DT8: support setting Tc limits, and other improvements #117

Closed jktjkt closed 1 year ago

jktjkt commented 1 year ago

I have a bunch of DT8 Osram OTi DALI DT6/8 devices which are by default set to something like 2700-6400K, but my LED strips have a different CT. Lunatone's SW won't allow me to change the physical Tc limits, so let's write a script which assists with this configuration.

Also some unrelated bugfixes as standalone commits.

led: DT8: recognize Colour Control device type when parsing a BackwardFrame

Without this patch, dumping DALI traffic would show stuff like this:

QueryDeviceType(<address (control gear) 0>) -> multiple
QueryNextDeviceType(<address (control gear) 0>) -> LED lamp
QueryNextDeviceType(<address (control gear) 0>) -> BackwardFrame(8)
QueryNextDeviceType(<address (control gear) 0>) -> none / end

recognize DT7 switching relays when querying device types

led: DT8: configuration commands need sending twice

This is as per 62386-209:2011, section 11.3.4.2, "Application extended configuration commands".

led: DT8: fix a copy/paste error in SetDT8ColourValueTc

Fixes: b706666 Expand DT8 support with tests and sequences

led: DT8: a sequence for setting Tc limits

led: DT8: a helper for conversion between K and Mirek for Tc

The standard talks about "Mirek", which is the SI lingo for Mired. I think that everybody else uses Kelvin, so let's add a helper function.

examples: getting and setting a Tc for DT8 CCT LEDs

sde1000 commented 1 year ago

All looks sensible, thank you. (I don't have a copy of the DT8 standard to check against, unfortunately.)