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Archivos usados en demo de charla sobre webthings... http://tiny.cc/uui86y
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| <!DOCTYPE html> | |
| <html lang="en" dir="ltr"> | |
| <head> | |
| <meta charset="utf-8"> | |
| <title>Light Switch</title> | |
| </head> | |
| <body> | |
| <button type="button">Toggle</button> | |
| <script> | |
| const ws = new WebSocket('ws://127.0.0.1:8888/'); | |
| const btn = document.getElementsByTagName('button')[0]; | |
| let state = false; | |
| ws.addEventListener('message', (e) => { | |
| const parsed = JSON.parse(e.data); | |
| state = !!parsed.data.on; | |
| document.body.style.backgroundColor = (state) ? 'yellow' : 'white'; | |
| }); | |
| btn.addEventListener('click', () => { | |
| ws.send(JSON.stringify({ | |
| messageType: 'setProperty', | |
| data: { on: !state }, | |
| })); | |
| }); | |
| </script> | |
| </body> | |
| </html> |
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| const { Board, Button, Led } = require('johnny-five'); | |
| const { | |
| Property, | |
| SingleThing, | |
| Thing, | |
| Value, | |
| WebThingServer, | |
| } = require('webthing'); | |
| const makeThing = (led) => { | |
| const light = new Thing( | |
| 'Light switch', | |
| ['Light'], | |
| 'Nodebot light switch', | |
| ); | |
| const onOffValue = new Value(false, v => (v ? led.on() : led.off())); | |
| const onOffProperty = new Property(light, 'on', onOffValue, { | |
| '@type': 'OnOffProperty', | |
| title: 'On/Off', | |
| type: 'boolean', | |
| description: 'Whether the light is turned on', | |
| }); | |
| light.addProperty(onOffProperty); | |
| return light; | |
| }; | |
| const runWebThingServer = (thing) => { | |
| const server = new WebThingServer(new SingleThing(thing), 8888); | |
| process.on('SIGINT', () => ( | |
| server.stop() | |
| .then(() => process.exit()) | |
| .catch(() => process.exit()) | |
| )); | |
| server.start() | |
| .catch(console.error); | |
| }; | |
| Board().on('ready', () => { | |
| const btn = new Button({ pin: 5, invert: true }); | |
| const led = new Led(9); | |
| const thing = makeThing(led); | |
| btn.on('release', () => { | |
| led.toggle(); | |
| thing.properties.on.value.notifyOfExternalUpdate(led.value); | |
| }); | |
| runWebThingServer(thing); | |
| }); |
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