SetOption37 is used for re-mapping the RGBWcWw channels. This transformation happens right before the hardware-specific output, so all the advanced features (schemes, hsb setting, etc.) works with the original, un-mapped values.
The main reason for this option is to provide support for bulbs whose physical wiring is almost the usual/standard one, but the channels are arranged in a different way.
For technical reasons this transformation isn't a full N-to-N mapping, it can only the re-arrange the channels, which is equivalent to map the (R,G,B,Wc,Ww) channels to one of their permutations.
The required permutation can be configured via SetOption37 n, where n is the systematic index of the permutation, a number from the [0 .. 119] interval, from 0=(R,G,B,Wc,Ww) to 119=(Ww,Wc,B,G,R):
| Idx | Perm. | Idx | Perm. | Idx | Perm. | Idx | Perm. |
|---|---|---|---|---|---|---|---|
| 0 | R,G,B,Wc,Ww | 1 | R,G,B,Ww,Wc | 2 | R,G,Wc,B,Ww | 3 | R,G,Wc,Ww,B |
| 4 | R,G,Ww,B,Wc | 5 | R,G,Ww,Wc,B | 6 | R,B,G,Wc,Ww | 7 | R,B,G,Ww,Wc |
| 8 | R,B,Wc,G,Ww | 9 | R,B,Wc,Ww,G | 10 | R,B,Ww,G,Wc | 11 | R,B,Ww,Wc,G |
| 12 | R,Wc,G,B,Ww | 13 | R,Wc,G,Ww,B | 14 | R,Wc,B,G,Ww | 15 | R,Wc,B,Ww,G |
| 16 | R,Wc,Ww,G,B | 17 | R,Wc,Ww,B,G | 18 | R,Ww,G,B,Wc | 19 | R,Ww,G,Wc,B |
| 20 | R,Ww,B,G,Wc | 21 | R,Ww,B,Wc,G | 22 | R,Ww,Wc,G,B | 23 | R,Ww,Wc,B,G |
| 24 | G,R,B,Wc,Ww | 25 | G,R,B,Ww,Wc | 26 | G,R,Wc,B,Ww | 27 | G,R,Wc,Ww,B |
| 28 | G,R,Ww,B,Wc | 29 | G,R,Ww,Wc,B | 30 | G,B,R,Wc,Ww | 31 | G,B,R,Ww,Wc |
| 32 | G,B,Wc,R,Ww | 33 | G,B,Wc,Ww,R | 34 | G,B,Ww,R,Wc | 35 | G,B,Ww,Wc,R |
| 36 | G,Wc,R,B,Ww | 37 | G,Wc,R,Ww,B | 38 | G,Wc,B,R,Ww | 39 | G,Wc,B,Ww,R |
| 40 | G,Wc,Ww,R,B | 41 | G,Wc,Ww,B,R | 42 | G,Ww,R,B,Wc | 43 | G,Ww,R,Wc,B |
| 44 | G,Ww,B,R,Wc | 45 | G,Ww,B,Wc,R | 46 | G,Ww,Wc,R,B | 47 | G,Ww,Wc,B,R |
| 48 | B,R,G,Wc,Ww | 49 | B,R,G,Ww,Wc | 50 | B,R,Wc,G,Ww | 51 | B,R,Wc,Ww,G |
| 52 | B,R,Ww,G,Wc | 53 | B,R,Ww,Wc,G | 54 | B,G,R,Wc,Ww | 55 | B,G,R,Ww,Wc |
| 56 | B,G,Wc,R,Ww | 57 | B,G,Wc,Ww,R | 58 | B,G,Ww,R,Wc | 59 | B,G,Ww,Wc,R |
| 60 | B,Wc,R,G,Ww | 61 | B,Wc,R,Ww,G | 62 | B,Wc,G,R,Ww | 63 | B,Wc,G,Ww,R |
| 64 | B,Wc,Ww,R,G | 65 | B,Wc,Ww,G,R | 66 | B,Ww,R,G,Wc | 67 | B,Ww,R,Wc,G |
| 68 | B,Ww,G,R,Wc | 69 | B,Ww,G,Wc,R | 70 | B,Ww,Wc,R,G | 71 | B,Ww,Wc,G,R |
| 72 | Wc,R,G,B,Ww | 73 | Wc,R,G,Ww,B | 74 | Wc,R,B,G,Ww | 75 | Wc,R,B,Ww,G |
| 76 | Wc,R,Ww,G,B | 77 | Wc,R,Ww,B,G | 78 | Wc,G,R,B,Ww | 79 | Wc,G,R,Ww,B |
| 80 | Wc,G,B,R,Ww | 81 | Wc,G,B,Ww,R | 82 | Wc,G,Ww,R,B | 83 | Wc,G,Ww,B,R |
| 84 | Wc,B,R,G,Ww | 85 | Wc,B,R,Ww,G | 86 | Wc,B,G,R,Ww | 87 | Wc,B,G,Ww,R |
| 88 | Wc,B,Ww,R,G | 89 | Wc,B,Ww,G,R | 90 | Wc,Ww,R,G,B | 91 | Wc,Ww,R,B,G |
| 92 | Wc,Ww,G,R,B | 93 | Wc,Ww,G,B,R | 94 | Wc,Ww,B,R,G | 95 | Wc,Ww,B,G,R |
| 96 | Ww,R,G,B,Wc | 97 | Ww,R,G,Wc,B | 98 | Ww,R,B,G,Wc | 99 | Ww,R,B,Wc,G |
| 100 | Ww,R,Wc,G,B | 101 | Ww,R,Wc,B,G | 102 | Ww,G,R,B,Wc | 103 | Ww,G,R,Wc,B |
| 104 | Ww,G,B,R,Wc | 105 | Ww,G,B,Wc,R | 106 | Ww,G,Wc,R,B | 107 | Ww,G,Wc,B,R |
| 108 | Ww,B,R,G,Wc | 109 | Ww,B,R,Wc,G | 110 | Ww,B,G,R,Wc | 111 | Ww,B,G,Wc,R |
| 112 | Ww,B,Wc,R,G | 113 | Ww,B,Wc,G,R | 114 | Ww,Wc,R,G,B | 115 | Ww,Wc,R,B,G |
| 116 | Ww,Wc,G,R,B | 117 | Ww,Wc,G,B,R | 118 | Ww,Wc,B,R,G | 119 | Ww,Wc,B,G,R |
Source: this spreadsheet