nwmedia-c262-lab2-image.js

import SerialPort from 'serialport';
import Vibrant from 'node-vibrant';
import readline from 'readline';
import util from 'util';

(async () => {
  const entries = await SerialPort.list();
  const entry = entries.find(
    (it) => it.manufacturer && it.manufacturer.includes('Arduino')
  );
  if (!entry) {
    console.warn('No Arduino found');
    return;
  }
  console.info(`Connecting to ${entry.path}...`);

  const port = new SerialPort(entry.path, { baudRate: 9600 });
  const parser = port.pipe(
    new SerialPort.parsers.Readline({ delimiter: '\r\n', encoding: 'ascii' })
  );

  await new Promise((resolve, _) => {
    const listener = () => {
      resolve(undefined);
      parser.removeListener('data', listener);
    };
    parser.addListener('data', listener);
  });

  console.info('Device is now ready for serial communication');

  port.write(Buffer.from(Uint8ClampedArray.of(255, 255, 255, 0x0a)));

  const rl = readline.createInterface({ input: process.stdin });
  const question = util.promisify(rl.question).bind(rl);

  while (true) {
    const url = await question('Please enter Image URL: ');
    const palette = await Vibrant.from(url).getPalette();
    port.write(Buffer.from(Uint8ClampedArray.of(...palette.Vibrant.rgb, 0x0a)));
  }
})();