I have try to get data from device (USB thermometer), following this documentation, but I have not any result.

For getting themperature data from device, I should send the data like that 'dn'.

This is my code:

var usb = require('usb'),

    term = usb.findByIds(65535, 2);



term.open();



var endpoints = term.interfaces[0].endpoints,

    inEndpoint = endpoints[0],

    outEndpoint = endpoints[1];



inEndpoint.transferType = 2;

inEndpoint.startStream(1, 64);

inEndpoint.transfer(64, function (error, data) {

    if (!error) {

        console.log(data);

    } else {

        console.log(error);

    }

});

inEndpoint.on('data', function (data) {

    console.log(data);

});

inEndpoint.on('error', function (error) {

    console.log(error);

});

outEndpoint.transferType = 2;

outEndpoint.startStream(1, 64);

outEndpoint.transfer(new Buffer('dn'), function (err) {

    console.log(err);

});

After running I have got this:

D:DevUSBTestnode_modulesusbusb.js:261

    t.submit(new Buffer(self.streamTransferSize), transferDone)

      ^

Error: LIBUSB_ERROR_NOT_FOUND

    at startTransfer (D:DevUSBTestnode_modulesusbusb.js:261:5)

    at Array.forEach (native)

    at InEndpoint.startStream (D:DevUSBTestnode_modulesusbusb.js:264:23)

    at D:DevUSBTestapp.js:15:16

    at Object.<anonymous> (D:DevUSBTestapp.js:35:2)

    at Module._compile (module.js:456:26)

    at Object.Module._extensions..js (module.js:474:10)

    at Module.load (module.js:356:32)

    at Function.Module._load (module.js:312:12)

    at Function.Module.runMain (module.js:497:10)