Control AtmoLight with ioBroker

AtmoLight-iobroker.js

// I had an old AtmoLight ( http://www.mediacenter-pc.com/atmolight/ ) idling around.
// It is connected via USB (and creates a serial port) and controls four LED stripes
// So I wanted to control it with ioBroker. Here is the script for that.
// You should set the right serial port below:

//configure right serial port here. I recommend looking up the ID and replacing the scrint below by the id string.
//looks like: /dev/serial/by-id/usb-c@rstenpresser.de_AtmoLight_SMD_v04_23U9NVYR-if00-port0"
const portPath = "/dev/ttyUSB";

//also you can configure the name of a folder in javascript.* here. There will be two states, brighness and color in there.
const baseName = "AtmoLight";
createState(baseName + ".brightness", {type: "number", min: 0, max: 100, role: "level.brightness", unit: "%"});
const brightnessId = "javascript." + instance + "." + baseName + ".brightness";
createState(baseName + ".color", {type: "string", role: "level.color.rgb"});
const colorId = "javascript." + instance + "." + baseName + ".color";

//green: write: ff 00 00 0f 00 00 00 00 ff 00 00 ff 00 00 ff 00 00 ff 00
//red:  write: ff 00 00 0f 00 00 00 ff 00 00 ff 00 00 ff 00 00 ff 00 00
//blue: write: ff 00 00 0f 00 00 00 00 00 ff 00 00 ff 00 00 ff 00 00 ff

const debug = true;
const prefix = "ff 00 00 0f 00 00 00";
const prefixArray = [0xFF, 0, 0, 0x0F, 0, 0, 0];
const SerialPort = require("serialport");
const port = new SerialPort(portPath, {
    baudRate: 38400,
    lock: false
}, function (err, val) {
    if (err) {
        log("Error opening port: " + err);
    } else {
        log("Opened port: " + val);
    }
});

function NumToHex(num) { 
  var hex = Number(num).toString(16);
  if (hex.length < 2) {
       hex = "0" + hex;
  }
  return hex;
};

let commandArray = [];
let brightness = 100;
function processRGBString(rgbString) {
    if (rgbString.length !== 7) {
        rgbString = "#" + rgbString;
    }
    let r = parseInt(rgbString.substr(1, 2), 16) * brightness / 100;
    let g = parseInt(rgbString.substr(3, 2), 16) * brightness / 100;
    let b = parseInt(rgbString.substr(5, 2), 16) * brightness / 100;

    let colorArray = [r,g,b];
    commandArray = prefixArray.concat(colorArray, colorArray, colorArray, colorArray);

    if (debug) {
        let strArray = [];
        commandArray.forEach(v => strArray.push(NumToHex(v)));
        log("Got color " + rgbString + " Writing: " + strArray.join(" ") + " (" + commandArray.length + ")");
    }
}

setInterval(function () {
    port.write(commandArray);
}, 160);

on({id: colorId, ack: false}, (ev) => {
    let val = ev.newState.val;
    processRGBString(val);
    setState(colorId, val, true);
});
on({id: brightnessId, ack: false}, (ev) => {
    brightness = ev.newState.val;
    getState(colorId, (err, state) => processRGBString(state.val));
    setState(brightnessId, brightness, true);
})
getState(brightnessId, (err, state) => {
    brightness = state.val;
    getState(colorId, (err, state) => processRGBString(state.val));
});