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2
answers
517
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navigator.usb.requestDevices is missing in chrome extension service-worker
I am working on a Chrome Extension which will save specific resource to my Oculus Quest directly via WebUsb.
The problem is, I find the navigator.usb.requestDevice is not exist in service worker.
My ...
0
votes
1
answer
141
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The usb_device pkg on Flutter Web in release-mode gives error when trying to connect
I am using this Flutter package: usb_device 1.0.2
In debug mode, my Flutter Web Application successfully connects to my USB-Device.
My USB-device is an ESP32-S3.
And I am on Flutter version 3.24.4 • ...
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0
votes
2
answers
86
views
Problem sorting devices received from navigator.usb.getDevices
I am using Electron and node.js and have problems talking to several identical USB devices (sensors) differing only in their serial number.
How can I sort USB devices (same manufacturerName and same ...
0
votes
1
answer
593
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Web USB / Serial API + led strip KAA332-LH
I wonder if anyone has any experience with the Web USB and controlling a LED strip. I have a basic LED strip. I can connect the device from the browser js, but when I try to do device.open() I'm ...
0
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0
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168
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Connect device using WebUSB and Flutter
I'm trying to connect a device using WebUSB and Flutter.
But I get this error when trying to connect:
NetworkError: Failed to execute 'claimInterface' on 'USBDevice': Unable to claim interface.
The ...
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0
answers
607
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Do we take print from angular application with WebUSB API in Thermal Printer (MP-4200 TH)?
Following is the Angular code of app.component.ts
@Component({
selector: 'app-root',
templateUrl: './app.component.html'
})
export class AppComponent {
private usbDevice: any;
private ...
0
votes
1
answer
122
views
WebUSB/transferIn: how to reuse memory?
transferIn seems allocate memory each function call, is there any way to reuse it?
My goal is to get lots of data from device, with a dedicated web worker and this advice, performance still not good ...
0
votes
1
answer
303
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WebUSB doesn't recognize Windows device
I'm trying to make communication between my Android phone and Windows PC via WebUSB. My PC can see my phone withput any troubles, but my phone can't.
Code I'm using, actually it's part of a function ...
1
vote
0
answers
119
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microbit is unable to flash board with a Windows ARM64 laptop
When using a Windows 11 ARM64 laptop, I encounter difficulties flashing my microbit program to the board. Could you please advise if there are any plans to support the Windows ARM64 platform in ...
0
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0
answers
434
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It is possible to change USB device class from mass storage to serial?
I have a USB device, that works as a mass storage device.
The access is blocked on Chrome browser through WebUSB because it's a mass storage device.
The device also supports raw access as a block ...
0
votes
0
answers
425
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USB Scale not showing up using WebHID
I have a USB scale of type Mettler/Toledo PS60 which I'm trying to connect to using the WebHID API in order to receive scale values for my web app. However it doesn't show up in the list of devices ...
0
votes
1
answer
389
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How can i interact with Chrome pop-up for USB connection in Python/Selenium?
i'm developing a Test Automation framework in Python using Selenium, Appium and Behave/Gherkin.
I'm developing the test of a device that is needed to be paired to Web App.
In particular, the Web App ...
0
votes
1
answer
636
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Can webusb automatically connect without user-gesture, when device has no serial number?
I am writing a web-app, where my users use, a DS2490 ibutton reader, zebra scanner, zebra printer and Loadstar di1000 Loadcell. I run chrome os flex on the devices, that run this webapp, and i manage ...
0
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1
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2k
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Failed to claim interface WebUSB API
After obtaining access to my usb device, I am trying to claim interface 0 on the device and get the error:
Uncaught (in promise) DOMException: Failed to execute 'claimInterface' on 'USBDevice': Unable ...
4
votes
0
answers
195
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The requested interface implements a protected class
I want to read NFC card's data the ACR1252 using reader through the browser. the reader is successfully seen by the browser, but it does not allow me to access the interface to implement authorization ...