using node-usb this.open() , LIBUSB_ERROR_ACCESS

Question

After connecting the USB to the raspberry pie,

I have loaded the devices with node-usb .

The desired device was found by the device's VID and PID.

Then I open the device and try to read the data.

But this._open () , error: LIBUSB_ERROR_ACCESS I get this error occured.

How do I give permission?

I did not solve it even though I tried this.

fs.chmod('/media/pi/EFD0-AA20', 511);

below is my code.

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

    var devices = usb.getDeviceList();
    var sandisk_ultrafit = usb.findByIds(1921, 21891);
    sandisk_ultrafit.open();

});

Have you tried running with sudo? Or giving the correct USB permissions in udev? — Ben Fortune, Jun 01 '18 at 08:02
i tried but error say no such file or directory. above path is mounte point. — , Jun 01 '18 at 08:12

Satyaki Roy · Answer 1 · 2020-06-17T08:28:42.697

0

cd /etc/udev/rules.d
Create a file named "myVender.rules"
SUBSYSTEM=="usb", ATTRS{idVendor}=="--VID--", MODE="0666" SUBSYSTEM=="usb_device", ATTRS{idVendor}=="--VID--", MODE="0666"
replace "--VID--" with the vender ID of your device (USB device)

In My Linux Machine

enter image description here
VID of my usb is 0781

edited Jun 17 '20 at 08:28

answered Jun 17 '20 at 08:12

Satyaki Roy

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Any idea, How to do this for Windows? – Afaq Khan Aug 24 '23 at 14:14

using node-usb this.open() , LIBUSB_ERROR_ACCESS

1 Answers1