webusb

Anybody had successfully configured webusb to scan a document ? I am able to connect to the usb scanner but wasn't able to find any documentation on commands to scan documents : $lsusb -v Bus 001 Device 007: ID 1083:163e Canon Electronics, Inc. Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass 0 (Defined at Interface level) bDeviceSubClass 0 bDeviceProtocol 1 bMaxPacketSize0 64 idVendor 0x1083 Canon Electronics, Inc. idProduct 0x163e bcdDevice 2.02 iManufacturer 1 CANON iProduct 2 CANON DR-M160 iSerial 0 bNumConfigurations 1 Configuration Descriptor: bLength 9

I am trying to allow a POS web app to print directly to a StarMicronics (or any receipt printer, for that matter) using the Chrome webusb API. I am using the example here almost exactly except I have modified the vendorId filter to the Vendor ID of StarMicronics. I have also tried it with a completely empty filter. It works great on the Mac computers I have tested it on, but the problem is on Windows. When I click the print button, Chrome opens up the connection window, my device is listed and I can select it and click Connect. So navigator.usb.getDevices() is working great. When I refresh the

I am trying to communicate with usb device using WEBUSB API . BUT when I am trying to claim Interface it shows "DOMException: Unable to claim interface" the bConfigurationvalue is 1 and interface number is 0 . I am adding the output of command lsusb -v below ~$ lsusb -v Bus 001 Device 005: ID 0930:6544 Toshiba Corp. TransMemory-Mini / Kingston DataTraveler 2.0 Stick (2GB) Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass 0 (Defined at Interface level) bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 64 idVendor 0x0930 Toshiba Corp. idProduct 0x6544 TransMemory-Mini /

I am developing a javascript library to perform smart card operations using the CCID protocol over chrome webusb API. Everything goes well when I plug the smart card reader on Linux and MacOS, however I get stuck on windows when I try to claim the interface. I tried to run chrome as an administrator, disable smart card services / CCID drivers on windows in case those were claiming the interface, but nothing does it. I keep having the "Failed to claim interface: Access denied (insufficient permissions)" message. Is it really a permission problem ? Or is it some windows service I am not aware of