roberttidey
commented
9 years ago If you check the first paragraph on page 4 just under the commands and parameters section it says the first 2 nibbles are taken together as a parameter value (0-255). The headings on the table on page 5 could be misleading. The column labelled as nibble actually is the the value of the command nibble not the nibble index number as you may be reading it. So a command (4th nibble) has OFF value of 0, an ON value of 1, and a MOOD value of 2. I'll relabel that to make it clearer.
A typical 100% ON sequence as transmitted by wifi link for a dimmer is 9,14,d,1,a,a,a,a,a,r the first 2 nibbles give a value of 9*16+14 = 158 (like the 9th row in the table). I don't know why it doesn't use the maximum value of 159, but I don't think it makes much difference. The 4th nibble is a 1 (ON), d is the device number, r is the room number, and the a's are the base pairing address.
markvr
Hi, many thanks for your work on this! I've been trying it out with a raspberry Pi and a Lightwave dimmable light switch. It has paired OK and I can change the brightness (yay!), but not always predictably to what I want!
TL;DR: In the python example, what should the values in: TX_TEST = [0,0,0,1,15,1,5,10,12,2], be to turn a light from "off" to "maximum brightness"?
I've read the PDF several times and am confused at the description on page 5 of the nibbles and commands. My understanding is a "nibble" is 4 bits, so has a maximum value of 16, but you have parameters for "nibble 0" up to 256, which is obviously a full byte. The obvious thing is too use "nibble 2" as well (e.g. a value of 159 (max brightness ) == 1001 1111 == [9, 15,...]), but nibble 2 has other params described, which also go up to 256.
Or am I barking up the wrong tree entirely with my calculations..?!