const name = 'TwizCE2';

​

var ledCharacteristic;

​

function connectTo101() {

  let options = {

    filters: [{

      //services: [serviceUuid],

      name: name

    }]}

​

  console.log('Requesting Bluetooth Device...');

​

  navigator.bluetooth.requestDevice(options)

  .then(device => {

    console.log('Got device', device.name);

    return device.gatt.connect();

  })

  .then(server => {

      console.log('Getting Service...');

      return server.getPrimaryService(serviceUuid);

    })

    .then(service => {

      console.log('Getting Characteristics...');

      return service.getCharacteristics();

    })

    .then(characteristics => {

      console.log('Got LED Characteristic');

      ledCharacteristic = characteristics[0];

    })

    .catch(error => {

      console.log('Argh! ' + error);

    });

}

​

function writeTo101() {

  let inputValue = document.getElementById('input-box').value;

​

  let bufferToSend = Uint8Array.of(inputValue);

  ledCharacteristic.writeValue(bufferToSend);

  console.log('Writing '+ inputValue + ' to led Characteristic...');

​

}