186 lines
6.4 KiB
JavaScript
186 lines
6.4 KiB
JavaScript
require('dotenv').config() // 读取系统环境变量
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// HTTP 请求路由
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const app = require('express')()
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app.get('/', (req, res) => res.sendStatus(200))
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// 服务器启动
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const port = process.env.PORT || 3000
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const host = process.env.HOST || 'localhost'
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const server = app.listen(port, host, () => {
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console.log(`rpi sense hat server is running at http://${host}:${port}`)
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})
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// Sense HAT 全局数据 及 初始化
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const R = [255, 0, 0]
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const G = [0, 255, 0]
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const B = [0, 0, 255]
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const Y = [255, 255, 0]
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const P = [255, 0, 255]
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const C = [0, 255, 255]
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const O = [255, 255, 255]
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const _ = [0, 0, 0]
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const sensehat = {
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led: {
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...require('sense-hat-led').sync,
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/*
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sleep(n) 暂停 n 秒
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clear() 清除所有
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clear(rgb) or clear([r,g,b]) 填充颜色
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setPixel(x,y,r,g,b) or setPixel(x,y,rgb) 设置一个点
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getPixel(x,y) 返回 [r,g,b] 获取一个点
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setPixels([[r,g,b]*64])
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getPixels() -> [[r,g,b]*64]
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flipH(redraw=true) 水平反转
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flipV(redraw=true) 垂直反转
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setRotation(r, redraw=true) 设置旋转，r 初始为 0，r 只能设置为 0/90/180/270
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getter and setter rotation 默认为 0
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getter and setter lowLight 默认为 true
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getter and setter gamma = Array of length 32 containing Integers between 0 and 31
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gammaReset() 恢复默认 gamma
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loadImage(filePath, redraw=true)
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showLetter(character, textColour=[255,255,255], backColour=[0,0,0])
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showMessage(textString, scrollSpeed=0.1(秒), textColour=[255,255,255], backColour=[0,0,0])
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flashMessage(textString, speed=0.1(秒), textColour=[255,255,255], backColour=[0,0,0])
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*/
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get pixels() { return sensehat.led.getPixels() },
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},
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}
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sensehat.led.clear()
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sensehat.led.loadImage('images/heart.png')
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// socketio 服务
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const io = require('socket.io')(server, { cors: { origin: '*' } })
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io.on('connection', (client) => {
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io.emit('action', { action: 'setPixels', pixels: sensehat.led.pixels })
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client.on('action', ({ action, x, y, color, pixels, delay }) => {
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x = Number(x), y = Number(y), delay = Number(delay) | 200
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switch (action) {
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case 'clear':
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if (color == undefined) color = [0, 0, 0]
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sensehat.led.clear(color)
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io.emit('action', { action: 'clear', color })
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break
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case 'flash':
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if (color == undefined) color = [255, 255, 255]
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sensehat.led.clear(color)
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io.emit('action', { action: 'clear', color })
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setTimeout(() => {
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sensehat.led.clear()
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io.emit('action', { action: 'clear' })
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}, delay)
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break
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case 'setPixel':
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if (color == undefined) color = [255, 255, 255]
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sensehat.led.setPixel(x, y, color)
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io.emit('action', { action: 'setPixel', x, y, color })
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break
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case 'getPixel':
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color = sensehat.led.getPixel(x, y)
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client.emit('action', { action: 'setPixel', x, y, color })
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break
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case 'setPixels':
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for (let i = 0; i < pixels.length; i++) {
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var color = pixels[i]
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var x = i % 8
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var y = Math.floor(i / 8)
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sensehat.led.setPixel(x, y, color)
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}
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io.emit('action', { action: 'setPixels', pixels: sensehat.led.pixels })
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break
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case 'getPixels':
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io.emit('action', { action: 'setPixels', pixels: sensehat.led.pixels })
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break
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case 'flipH':
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sensehat.led.flipH()
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io.emit('action', { action: 'setPixels', pixels: sensehat.led.pixels })
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break
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case 'flipV':
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sensehat.led.flipV()
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io.emit('action', { action: 'setPixels', pixels: sensehat.led.pixels })
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break
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case 'turnLeft':
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var r = ((Number(sensehat.led.rotation) - 90) + 360) % 360
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sensehat.led.rotation = r
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sensehat.led.setRotation()
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// io.emit('action', { action: 'setPixels', pixels: sensehat.led.pixels })
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break
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case 'turnRight':
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var r = (Number(sensehat.led.rotation) + 90) % 360
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sensehat.led.rotation = r
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sensehat.led.setRotation(r)
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// io.emit('action', { action: 'setPixels', pixels: sensehat.led.pixels })
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break
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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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default:
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break
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}
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})
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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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// get_rpis_info()
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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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