JL Cooper SlomoElite Library

Example code

async function run() {
  const jlc = new JLCSlomoElite('COM4');

  await jlc.open();

  await jlc.clear();

  await jlc.writeText('Jojo!', { fontSize: FontSize.Large, inverted: false, x: 10, y: 10, spacing: 1});

  console.log(await jlc.requestSystemInfo());

  await jlc.setShuttleMode(ShuttleMode.Automatic);
  await jlc.setTBarResolution(TBarResolution.Bits10);
  await jlc.drawObject(ObjectType.FilledRectangle, { x: 10, y: 100, width: 100, height: 100 }, 1, false);
  
  /* Render some pixels to back buffer */
  await jlc.setRenderMode(RenderMode.RAM);
  const pixels = new Uint8Array(300 * 4).fill(0xff);

  await jlc.drawPixels(0, 0, 300, pixels);
  await jlc.requestTransferRAMToDisplay();

  /* Transfer complete, reset render mode */
  await jlc.setRenderMode(RenderMode.Display);

  setInterval(() => {
    jlc.writeText(`${Date.now()}`, { fontSize: FontSize.Medium, inverted: false, x: 10, y: 30, spacing: 1});
  }, 1000);

}

run().catch(console.error);