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add SetWaveform message; useful for notifications #12

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add SetWaveform message; useful for notifications #12

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44 changes: 44 additions & 0 deletions messages/light.md
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Original file line number Diff line number Diff line change
Expand Up @@ -10,6 +10,7 @@
* [Light messages](#light-messages) - message type value
* [Get - 101](#get---101)
* [SetColor - 102](#setcolor---102)
* [SetWaveform - 103](#setwaveform---103)
* [State - 107](#state---107)
* [GetPower - 116](#getpower---116)
* [SetPower - 117](#setpower---117)
Expand All @@ -33,6 +34,21 @@ The [Protocol header](../header.md#protocol-header) _message type_ field value
Each section below describes the _payload_ that is appended to the
[message header](../header.md). Some messages do not require a payload.

## Enumerated types

### Waveform

Describes the type of flashing pattern used in the
[SetWaveform](#setwaveform---103) message.

| Type | Value |
|----------|-------|
| Saw | 0 |
| Sine | 1 |
| HalfSine | 2 |
| Triangle | 3 |
| Pulse | 4 |

## Message field data types

### HSBK
Expand Down Expand Up @@ -86,6 +102,34 @@ The _duration_ is the color transition time in milliseconds.
If the [Frame Address](../header.md#frame-address) _res\_required_ field is
set to one (1) then the device will transmit a [State](#state---107) message.

### SetWaveform - 103

Sent by a client to cause the light to display a configurable flashing
pattern, such as used by the "pulse" and "breathe" effects in the HTTP
API.

| Field | Type |
|------------|-------------------------------------------------------|
| reserved | unsigned 8-bit integer |
| transient | unsigned 8-bit integer, interpreted as boolean |
| color | HSBK |
| period | unsigned 32-bit integer |
| cycles | 32-bit float |
| duty_cycle | signed 16-bit integer |
| waveform | unsigned 8-bit integer, maps to [Waveform](#waveform) |

If _transient_ is 1, the color returns to the original color of the
light, after the specified number of _cycles_. If _transient_ is
0, the light is left set to _color_ after the specified number of
_cycles_.

The _period_ is the length of one cycle in milliseconds.

If _duty_cycle_ is 0, an equal amount of time is spent on the original
color and the new _color_. If _duty_cycle_ is positive, more time is
spent on the original color. If _duty_cycle_ is negative, more time
is spent on the new color.

### State - 107

Sent by a device to provide the current light state.
Expand Down