Node.JS与USB接口通信:检测U盘/移动硬盘插拔事件和发送接数据

apt-get install build-essential libudev-dev

node-usb

npm install usb

var usb = require('usb')

usb.on('attach', function(device) { 
});

usb.on('detach', function(device) { 
});

const GET_STATUS_INFO = 0xAA;
var device = usb.findByIds(vid, pid);

if(device){
  device.open();
  var interface = device.interfaces[0];
  interface.claim();

  var inpoint = interface.endpoints[0]; // interface.endpoint(id) don't work for id=0 btw
  var outpoint = interface.endpoints[1];

  var update_status_info = function(){
    var out_report = Buffer.alloc(128, 0);
    out_report[0] = GET_STATUS_INFO;
    outpoint.transfer(out_report, function(err){
      if(err) throw err;

      inpoint.transfer(128, function(err, data){
        if(err) throw err;

        // valid data packet received!
        // ...

        // update status regulary
        setTimeout(update_status_info, 500);
     }
  }

  update_status_info();
}

node-usb-detection

var usbDetect = require('usb-detection');
// Detect add/insert
usbDetect.on('add', function(device) { console.log('add', device); });
usbDetect.on('add:vid', function(device) { console.log('add', device); });
usbDetect.on('add:vid:pid', function(device) { console.log('add', device); });
// Detect remove
usbDetect.on('remove', function(device) { console.log('remove', device); });
usbDetect.on('remove:vid', function(device) { console.log('remove', device); });
usbDetect.on('remove:vid:pid', function(device) { console.log('remove', device); });
// Detect add or remove (change)
usbDetect.on('change', function(device) { console.log('change', device); });
usbDetect.on('change:vid', function(device) { console.log('change', device); });
usbDetect.on('change:vid:pid', function(device) { console.log('change', device); });
// Get a list of USB devices on your system, optionally filtered by `vid` or `pid`
usbDetect.find(function(err, devices) { console.log('find', devices, err); });
usbDetect.find(vid, function(err, devices) { console.log('find', devices, err); });
usbDetect.find(vid, pid, function(err, devices) { console.log('find', devices, err); });
// Promise version of `find`:
usbDetect.find().then(function(devices) { console.log(devices); }).catch(function(err) { console.log(err); });