418 lines
13 KiB
Markdown
418 lines
13 KiB
Markdown
# node-lpf2 - A Node.js module to interface with Lego Power Functions 2.0 components.
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### Installation
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Node.js v8.0+ required.
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```javascript
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npm install node-lpf2 --save
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```
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node-lpf2 uses the Noble BLE library by Sandeep Mistry. On macOS everything should function out of the box. On Linux and Windows there are [certain dependencies which may need installed first](https://github.com/sandeepmistry/noble#prerequisites).
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Note: node-lpf2 has been tested on macOS 10.11 and Debian/Raspbian on the Raspberry Pi 3 Model B.
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### Usage
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```javascript
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const LPF2 = require("node-lpf2").LPF2;
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const lpf2 = new LPF2();
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```
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Examples are available in the "examples" directory.
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## Classes
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<dl>
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<dt><a href="#LPF2">LPF2</a> ⇐ <code>EventEmitter</code></dt>
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<dd></dd>
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<dt><a href="#BoostHub">BoostHub</a> ⇐ <code><a href="#Hub">Hub</a></code></dt>
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<dd></dd>
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<dt><a href="#WeDo2Hub">WeDo2Hub</a> ⇐ <code><a href="#Hub">Hub</a></code></dt>
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<dd></dd>
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<dt><a href="#Hub">Hub</a> ⇐ <code>EventEmitter</code></dt>
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<dd></dd>
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</dl>
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<a name="LPF2"></a>
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## LPF2 ⇐ <code>EventEmitter</code>
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**Kind**: global class
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**Extends**: <code>EventEmitter</code>
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* [LPF2](#LPF2) ⇐ <code>EventEmitter</code>
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* [.scan()](#LPF2+scan)
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* ["discover" (hub)](#LPF2+event_discover)
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<a name="LPF2+scan"></a>
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### lpF2.scan()
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Begin scanning for LPF2 Hub devices.
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**Kind**: instance method of [<code>LPF2</code>](#LPF2)
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<a name="LPF2+event_discover"></a>
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### "discover" (hub)
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Emits when a LPF2 Hub device is found.
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**Kind**: event emitted by [<code>LPF2</code>](#LPF2)
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| Param | Type |
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| --- | --- |
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| hub | [<code>Hub</code>](#Hub) |
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<a name="BoostHub"></a>
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## BoostHub ⇐ [<code>Hub</code>](#Hub)
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**Kind**: global class
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**Extends**: [<code>Hub</code>](#Hub)
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* [BoostHub](#BoostHub) ⇐ [<code>Hub</code>](#Hub)
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* [.setLEDColor(color)](#BoostHub+setLEDColor) ⇒ <code>Promise</code>
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* [.setMotorSpeed(port, speed, [time])](#BoostHub+setMotorSpeed) ⇒ <code>Promise</code>
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* [.setMotorAngle(port, angle, [speed])](#BoostHub+setMotorAngle) ⇒ <code>Promise</code>
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* [.connect([callback])](#Hub+connect)
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* [.subscribe(port, [mode])](#Hub+subscribe)
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* [.unsubscribe(port)](#Hub+unsubscribe)
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* ["button" (button, state)](#BoostHub+event_button)
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* ["distance" (port, distance)](#BoostHub+event_distance)
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* ["color" (port, color)](#BoostHub+event_color)
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* ["tilt" (port, x, y)](#BoostHub+event_tilt)
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* ["rotate" (port, rotation)](#BoostHub+event_rotate)
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<a name="BoostHub+setLEDColor"></a>
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### boostHub.setLEDColor(color) ⇒ <code>Promise</code>
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Set the color of the LED on the Hub via a color value.
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**Kind**: instance method of [<code>BoostHub</code>](#BoostHub)
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**Returns**: <code>Promise</code> - Resolved upon successful completion of command.
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| Param | Type | Description |
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| --- | --- | --- |
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| color | <code>number</code> | A number representing one of the LED color consts. |
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<a name="BoostHub+setMotorSpeed"></a>
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### boostHub.setMotorSpeed(port, speed, [time]) ⇒ <code>Promise</code>
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Set the motor speed on a given port.
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**Kind**: instance method of [<code>BoostHub</code>](#BoostHub)
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**Returns**: <code>Promise</code> - Resolved upon successful completion of command. If time is specified, this is once the motor is finished.
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| Param | Type | Description |
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| port | <code>string</code> | |
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| speed | <code>number</code> | For forward, a value between 1 - 100 should be set. For reverse, a value between -1 to -100. Stop is 0. |
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| [time] | <code>number</code> | How long to activate the motor for (in milliseconds). Leave empty to turn the motor on indefinitely. |
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<a name="BoostHub+setMotorAngle"></a>
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### boostHub.setMotorAngle(port, angle, [speed]) ⇒ <code>Promise</code>
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Rotate a motor by a given angle.
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**Kind**: instance method of [<code>BoostHub</code>](#BoostHub)
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**Returns**: <code>Promise</code> - Resolved upon successful completion of command (ie. once the motor is finished).
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| Param | Type | Default | Description |
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| --- | --- | --- | --- |
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| port | <code>string</code> | | |
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| angle | <code>number</code> | | How much the motor should be rotated (in degrees). |
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| [speed] | <code>number</code> | <code>100</code> | How fast the motor should be rotated. |
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<a name="Hub+connect"></a>
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### boostHub.connect([callback])
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Connect to the Hub.
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**Kind**: instance method of [<code>BoostHub</code>](#BoostHub)
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**Overrides**: [<code>connect</code>](#Hub+connect)
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| Param | Type |
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| --- | --- |
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| [callback] | <code>function</code> |
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<a name="Hub+subscribe"></a>
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### boostHub.subscribe(port, [mode])
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Subscribe to sensor notifications on a given port.
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**Kind**: instance method of [<code>BoostHub</code>](#BoostHub)
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| Param | Type | Default | Description |
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| --- | --- | --- | --- |
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| port | <code>string</code> | | |
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| [mode] | <code>number</code> \| <code>boolean</code> | <code>false</code> | The sensor mode to activate. If no mode is provided, the default for that sensor will be chosen. |
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<a name="Hub+unsubscribe"></a>
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### boostHub.unsubscribe(port)
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Unsubscribe to sensor notifications on a given port.
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**Kind**: instance method of [<code>BoostHub</code>](#BoostHub)
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| Param | Type |
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| port | <code>string</code> |
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<a name="BoostHub+event_button"></a>
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### "button" (button, state)
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Emits when a button is pressed.
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**Kind**: event emitted by [<code>BoostHub</code>](#BoostHub)
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| Param | Type | Description |
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| button | <code>string</code> | |
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| state | <code>number</code> | A number representing one of the button state consts. |
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<a name="BoostHub+event_distance"></a>
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### "distance" (port, distance)
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Emits when a distance sensor is activated.
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**Kind**: event emitted by [<code>BoostHub</code>](#BoostHub)
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| Param | Type | Description |
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| port | <code>string</code> | |
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| distance | <code>number</code> | Distance, in millimeters. |
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<a name="BoostHub+event_color"></a>
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### "color" (port, color)
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Emits when a color sensor is activated.
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**Kind**: event emitted by [<code>BoostHub</code>](#BoostHub)
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| Param | Type | Description |
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| port | <code>string</code> | |
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| color | <code>number</code> | A number representing one of the LED color consts. |
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<a name="BoostHub+event_tilt"></a>
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### "tilt" (port, x, y)
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Emits when a tilt sensor is activated.
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**Kind**: event emitted by [<code>BoostHub</code>](#BoostHub)
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| Param | Type |
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| port | <code>string</code> |
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| x | <code>number</code> |
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| y | <code>number</code> |
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<a name="BoostHub+event_rotate"></a>
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### "rotate" (port, rotation)
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Emits when a rotation sensor is activated.
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**Kind**: event emitted by [<code>BoostHub</code>](#BoostHub)
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| Param | Type |
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| port | <code>string</code> |
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| rotation | <code>number</code> |
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<a name="WeDo2Hub"></a>
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## WeDo2Hub ⇐ [<code>Hub</code>](#Hub)
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**Kind**: global class
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**Extends**: [<code>Hub</code>](#Hub)
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* [WeDo2Hub](#WeDo2Hub) ⇐ [<code>Hub</code>](#Hub)
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* [.setLEDColor(color)](#WeDo2Hub+setLEDColor) ⇒ <code>Promise</code>
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* [.setLEDRGB(red, green, blue)](#WeDo2Hub+setLEDRGB) ⇒ <code>Promise</code>
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* [.setMotorSpeed(port, speed)](#WeDo2Hub+setMotorSpeed) ⇒ <code>Promise</code>
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* [.connect([callback])](#Hub+connect)
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* [.subscribe(port, [mode])](#Hub+subscribe)
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* [.unsubscribe(port)](#Hub+unsubscribe)
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* ["button" (button, state)](#WeDo2Hub+event_button)
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* ["distance" (port, distance)](#WeDo2Hub+event_distance)
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* ["color" (port, color)](#WeDo2Hub+event_color)
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* ["tilt" (port, x, y)](#WeDo2Hub+event_tilt)
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* ["rotate" (port, rotation)](#WeDo2Hub+event_rotate)
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<a name="WeDo2Hub+setLEDColor"></a>
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### weDo2Hub.setLEDColor(color) ⇒ <code>Promise</code>
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Set the color of the LED on the Hub via a color value.
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**Kind**: instance method of [<code>WeDo2Hub</code>](#WeDo2Hub)
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**Returns**: <code>Promise</code> - Resolved upon successful completion of command.
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| Param | Type | Description |
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| color | <code>number</code> | A number representing one of the LED color consts. |
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<a name="WeDo2Hub+setLEDRGB"></a>
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### weDo2Hub.setLEDRGB(red, green, blue) ⇒ <code>Promise</code>
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Set the color of the LED on the Hub via RGB values.
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**Kind**: instance method of [<code>WeDo2Hub</code>](#WeDo2Hub)
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**Returns**: <code>Promise</code> - Resolved upon successful completion of command.
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| Param | Type |
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| red | <code>number</code> |
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| green | <code>number</code> |
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| blue | <code>number</code> |
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<a name="WeDo2Hub+setMotorSpeed"></a>
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### weDo2Hub.setMotorSpeed(port, speed) ⇒ <code>Promise</code>
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Set the motor speed on a given port.
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**Kind**: instance method of [<code>WeDo2Hub</code>](#WeDo2Hub)
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**Returns**: <code>Promise</code> - Resolved upon successful completion of command.
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| Param | Type | Description |
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| port | <code>string</code> | |
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| speed | <code>number</code> | For forward, a value between 1 - 100 should be set. For reverse, a value between -1 to -100. Stop is 0. |
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<a name="Hub+connect"></a>
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### weDo2Hub.connect([callback])
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Connect to the Hub.
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**Kind**: instance method of [<code>WeDo2Hub</code>](#WeDo2Hub)
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**Overrides**: [<code>connect</code>](#Hub+connect)
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| Param | Type |
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| [callback] | <code>function</code> |
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<a name="Hub+subscribe"></a>
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### weDo2Hub.subscribe(port, [mode])
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Subscribe to sensor notifications on a given port.
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**Kind**: instance method of [<code>WeDo2Hub</code>](#WeDo2Hub)
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| Param | Type | Default | Description |
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| port | <code>string</code> | | |
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| [mode] | <code>number</code> \| <code>boolean</code> | <code>false</code> | The sensor mode to activate. If no mode is provided, the default for that sensor will be chosen. |
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<a name="Hub+unsubscribe"></a>
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### weDo2Hub.unsubscribe(port)
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Unsubscribe to sensor notifications on a given port.
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**Kind**: instance method of [<code>WeDo2Hub</code>](#WeDo2Hub)
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| Param | Type |
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| port | <code>string</code> |
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<a name="WeDo2Hub+event_button"></a>
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### "button" (button, state)
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Emits when a button is pressed.
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**Kind**: event emitted by [<code>WeDo2Hub</code>](#WeDo2Hub)
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| Param | Type | Description |
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| button | <code>string</code> | |
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| state | <code>number</code> | A number representing one of the button state consts. |
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<a name="WeDo2Hub+event_distance"></a>
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### "distance" (port, distance)
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Emits when a distance sensor is activated.
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**Kind**: event emitted by [<code>WeDo2Hub</code>](#WeDo2Hub)
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| Param | Type | Description |
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| port | <code>string</code> | |
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| distance | <code>number</code> | Distance, in millimeters. |
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<a name="WeDo2Hub+event_color"></a>
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### "color" (port, color)
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Emits when a color sensor is activated.
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**Kind**: event emitted by [<code>WeDo2Hub</code>](#WeDo2Hub)
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| Param | Type | Description |
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| port | <code>string</code> | |
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| color | <code>number</code> | A number representing one of the LED color consts. |
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<a name="WeDo2Hub+event_tilt"></a>
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### "tilt" (port, x, y)
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Emits when a tilt sensor is activated.
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**Kind**: event emitted by [<code>WeDo2Hub</code>](#WeDo2Hub)
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| Param | Type |
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| port | <code>string</code> |
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| x | <code>number</code> |
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| y | <code>number</code> |
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<a name="WeDo2Hub+event_rotate"></a>
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### "rotate" (port, rotation)
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Emits when a rotation sensor is activated.
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**Kind**: event emitted by [<code>WeDo2Hub</code>](#WeDo2Hub)
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| Param | Type |
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| port | <code>string</code> |
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| rotation | <code>number</code> |
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<a name="Hub"></a>
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## Hub ⇐ <code>EventEmitter</code>
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**Kind**: global class
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**Extends**: <code>EventEmitter</code>
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* [Hub](#Hub) ⇐ <code>EventEmitter</code>
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* [.connect([callback])](#Hub+connect)
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* [.subscribe(port, [mode])](#Hub+subscribe)
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* [.unsubscribe(port)](#Hub+unsubscribe)
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<a name="Hub+connect"></a>
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### hub.connect([callback])
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Connect to the Hub.
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**Kind**: instance method of [<code>Hub</code>](#Hub)
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| Param | Type |
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| [callback] | <code>function</code> |
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<a name="Hub+subscribe"></a>
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### hub.subscribe(port, [mode])
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Subscribe to sensor notifications on a given port.
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**Kind**: instance method of [<code>Hub</code>](#Hub)
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| Param | Type | Default | Description |
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| port | <code>string</code> | | |
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| [mode] | <code>number</code> \| <code>boolean</code> | <code>false</code> | The sensor mode to activate. If no mode is provided, the default for that sensor will be chosen. |
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<a name="Hub+unsubscribe"></a>
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### hub.unsubscribe(port)
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Unsubscribe to sensor notifications on a given port.
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**Kind**: instance method of [<code>Hub</code>](#Hub)
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| Param | Type |
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| port | <code>string</code> |
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