165 lines
4.7 KiB
Markdown
165 lines
4.7 KiB
Markdown
# node-dmx
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DMX-512 controller library for node.js - also includes a Webinterface and HTTP API.
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## Install
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npm install -g dmx
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## Webinterface
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### Configuration
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The Daemon <code>dmx-web</code> looks for a configuration file in <code>/etc/dmx-web.json</code>. An alternate location can be passed as a command line argument.
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This configuration file consists of three sections:
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- Server
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- Universes
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- Presets
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In the Server section you can set the listen port and host.
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Under Universes you describe the DMX Universes with details like which output driver to use and which devices are at which address.
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The presets section allows you to specify a state some channels should be set when the preset is called.
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A example configuration is in the repository by the name <code>dmx-web-example.conf</code>
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### Run
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dmx-web [-c <full-path to config file>]
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### Animation HTTP API
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A List of Channel Transistions can be POSTed to <code>/animation/<universe></code>. Each transistion is a JSON Object with at least the <code>to</code> property present. The Value of which also has to be an Object describing the channel end-states.
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A duration for this transistion can be given in the <code>duration</code> property.
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If not specified 0ms is assumed.
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Example:
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[
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{"to": {"10": 0, "20": 0}},
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{"to": {"10": 255}, "duration": 2000},
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{"to": {"20": 255}, "duration": 1000}
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]
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This sets channels 10 and 20 to zero. Then transistions channel 10 to 255 in 2 seconds. After that channel 20 is faded to 255 in 1 second.
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## Library API
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var DMX = require('dmx')
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### Class DMX
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#### new DMX()
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Create a new DMX instance. This class is used to tie multiple universes together.
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#### dmx.registerDriver(name, module)
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- <code>name</code> - String
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- <code>module</code> - Object implementing the Driver API
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Register a new DMX Driver module by its name.
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These drivers are currently registered by default:
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- null: a development driver that prints the universe to stdout
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- enttec-usb-dmx-pro: a driver for devices using a Enttec USB DMX Pro chip like the "DMXKing ultraDMX Micro".
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- enttec-open-usb-dmx: driver for "Enttec Open DMX USB". This driver has not received enough testing and the hardware has known limitations. (If possible better obtain a device with the "pro" chip)
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- artnet: driver for EnttecODE
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#### dmx.addUniverse(name, driver, device_id)
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- <code>name</code> - String
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- <code>driver</code> - String, referring a registered driver
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- <code>device_id</code> - Number or Object
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Add a new DMX Universe with a name, driver and an optional device_id used by the driver to identify the device.
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For enttec-usb-dmx-pro and enttec-open-usb-dmx device_id is the path the the serial device. For artnet it is the target ip.
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#### dmx.update(universe, channels)
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- <code>universe</code> - String, name of the universe
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- <code>channels</code> - Object, keys are channel numbers, values the values to set that channel to
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Update one or multiple channels of a universe. Also emits a <code>update</code> Event with the same information.
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#### DMX.devices
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A JSON Object describing some Devices and how many channels they use.
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Currently not many devices are in there but more can be added to the <code>devices.js</code> file. Pull requests welcome ;-)
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The following Devices are known:
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- generic - a one channel dimmer
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- showtec-multidim2 - 4 channel dimmer with 4A per channel
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- eurolite-led-bar - Led bar with 3 RGB color segments and some programms
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- stairville-led-par-56 - RGB LED Par Can with some programms
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### Class DMX.Animation
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#### new DMX.Animation()
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Create a new DMX Animation instance. This can be chained similar to jQuery.
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#### animation.add(to, duration, options)
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- <code>to</code> - Object, keys are channel numbers, values the values to set that channel to
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- <code>duration</code> - Number, duration in ms
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- <code>options</code> - Object
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Add an animation Step.
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The options Object takes an <code>easing</code> key which allows to set a easing function from the following list:
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- linear (default)
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- inQuad
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- outQuad
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- inOutQuad
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- inCubic
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- outCubic
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- inOutCubic
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- inQuart
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- outQuart
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- inOutQuart
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- inQuint
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- outQuint
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- inOutQuint
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- inSine
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- outSine
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- inOutSine
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- inExpo
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- outExpo
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- inOutExpo
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- inCirc
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- outCirc
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- inOutCirc
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- inElastic
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- outElastic
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- inOutElastic
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- inBack
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- outBack
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- inOutBack
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- inBounce
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- outBounce
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- inOutBounce
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Returns a Animation object with the animation step added.
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#### animation.delay(duration)
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- <code>duration</code> - Number, duration in ms
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Delay the next animation step for duration.
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Returns a Animation object with the delay step added.
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#### animation.run(universe, onFinish)
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- <code>universe</code> - Object, reference to the universe driver
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- <code>onFinish</code> - Function, called when the animation is done
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Run the Animation on the specified universe.
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