​

navigator.usb.requestDevice({ filters: [{ vendorId: 0x2341 }] })

.then(selectedDevice => {

    device = selectedDevice;

    return device.open(); // Begin a session.

  })

.then(() => device.selectConfiguration(1)) // Select configuration #1 for the device.

.then(() => device.claimInterface(2)) // Request exclusive control over interface #2.

.then(() => device.controlTransferOut({

    requestType: 'class',

    recipient: 'interface',

    request: 0x22,

    value: 0x01,

    index: 0x02})) // Ready to receive data

.then(() => device.transferIn(5, 64)) // Waiting for 64 bytes of data from endpoint #5.

.then(result => {

  const decoder = new TextDecoder();

  console.log('Received: ' + decoder.decode(result.data));

})

/*.then(() => device.isochronousTransferIn(5, 64))

.then(result => {

  const decoder = new TextDecoder();

  console.log('Received: ' + decoder.decode(result.data));

})*/

.catch(error => { console.error(error); });

​

function setup() {

  createCanvas(400, 400);

}

​

function draw() {

  background(220);

}