101 lines
2.8 KiB
JavaScript
101 lines
2.8 KiB
JavaScript
const express = require('express')
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const socketio = require('socket.io')
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const CronJob = require('cron').CronJob
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const request = require('request')
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const sense = require('sense-hat-led').sync
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const app = express()
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const server = app.listen(3000, '0.0.0.0', () => console.log('server is running'))
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const io = socketio(server)
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app.use(express.static('public'))
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sense.setRotation(180)
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sense.lowLight = true
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const color_red = [255, 0]
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const color_blue = [0, 0, 255]
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const leds = [
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[0, 0, 0, 0, 0, 0, 0, 0],
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[0, 0, 0, 0, 0, 0, 0, 0],
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[0, 0, 0, 0, 0, 0, 0, 0],
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[0, 0, 0, 0, 0, 0, 0, 0],
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[0, 0, 0, 0, 0, 0, 0, 0],
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[0, 0, 0, 0, 0, 0, 0, 0],
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[0, 0, 0, 0, 0, 0, 0, 0],
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[0, 0, 0, 0, 0, 0, 0, 0],
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]
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read_all_leds()
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let zhao_server_errors = 0
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const job = new CronJob(
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'*/5 * * * * *',
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async () => {
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// 测试 http://zhao 的连通性
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request('http://zhao', (err, res, body) => {
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if (res.statusCode != 200) {
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zhao_server_errors++
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}
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if (zhao_server_errors > 0) {
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for (let i = 0; i < zhao_server_errors; i++) {
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const x = i % 8
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const y = Math.floor(i / 8)
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sense.setPixel(x, y, color_red)
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}
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} else {
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let color = sense.getPixel(0, 0)
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let r = color[0]
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let g = color[1]
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let b = color[2]
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sense.setPixel(0, 0, [r, g > 0 ? 0 : 255, b])
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}
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})
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},
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null,
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true
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)
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io.on('connection', (client) => {
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client.emit('leds', leds)
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client.on('action', ({ action, x, y }) => {
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console.log({ action, x, y })
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switch (action) {
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case 'on':
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sense.setPixel(Number(x), Number(y), color_blue)
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leds[y][x] = 1
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break
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case 'off':
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sense.setPixel(Number(x), Number(y), [0, 0, 0])
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leds[y][x] = 0
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break
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case 'hello':
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sense.flashMessage('HELLO', 1, color_blue)
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sense.clear()
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read_all_leds(0)
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break
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case 'flash':
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sense.clear([255, 255, 255])
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setTimeout(sense.clear, 100)
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read_all_leds(0)
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break
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case 'clear':
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sense.clear()
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read_all_leds(0)
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break
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case 'temp':
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read_all_leds()
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break
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default:
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break
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}
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io.emit('leds', leds)
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})
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})
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function read_all_leds(value = null) {
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const pixels = sense.getPixels()
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for (let y = 0; y < 8; y++) {
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for (let x = 0; x < 8; x++) {
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leds[y][x] = value !== null ? value : sense.getPixel(x, y)[2] == 0 ? 0 : 1
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}
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}
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}
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