Question

我正在尝试使用webusb api连接我的USB设备，该设备基本上是数字转换器。 USB版本是2.0。我已成功请求Chrome中的设备，但无法打开该设备，并显示错误访问拒绝。 request device USB设备具有3个接口：2个HID和1个USB（已加载winusb）。这是xusb中显示的信息：

Using libusb v1.0.23.11397

Opening device 2D80:1010...
libusb: warning [hid_open] could not open HID device in R/W mode (keyboard or mouse?) - trying without

Device properties:
bus number: 1
port path: 14 (from root hub)
speed: 12 Mbit/s (USB FullSpeed)

Reading device descriptor:
length: 18
device class: 0
S/N: 3
VID:PID: 2D80:1010
bcdDevice: 0100
iMan:iProd:iSer: 1:2:3
nb confs: 1

Reading BOS descriptor: 1 caps
Unknown BOS device capability 05:

Reading first configuration descriptor:
nb interfaces: 3
interface[0]: id = 0
interface[0].altsetting[0]: num endpoints = 1
Class.SubClass.Protocol: 03.01.01
endpoint[0].address: 81
max packet size: 0040
polling interval: 01
interface[1]: id = 1
interface[1].altsetting[0]: num endpoints = 1
Class.SubClass.Protocol: 03.01.01
endpoint[0].address: 82
max packet size: 0040
polling interval: 01
interface[2]: id = 2
interface[2].altsetting[0]: num endpoints = 1
Class.SubClass.Protocol: FF.00.00
endpoint[0].address: 83
max packet size: 0040
polling interval: 00

Claiming interface 0...

Claiming interface 1...

Claiming interface 2...

Reading string descriptors:
String (0x01): ""
String (0x02): ""
String (0x03): "******"

Reading Extended Compat ID OS Feature Descriptor (wIndex = 0x0004):
libusb: warning [hid_submit_control_transfer] unsupported HID control request
libusb: warning [hid_submit_control_transfer] unsupported HID control request

00000000 28 00 00 00 00 01 04 00 01 00 00 00 00 00 00 00 (...............
00000010 02 01 57 49 4e 55 53 42 00 00 00 00 00 00 00 00 ..WINUSB........
00000020 00 00 00 00 00 00 00 00 ........

Reading Extended Properties OS Feature Descriptor (wIndex = 0x0005):
libusb: warning [hid_submit_control_transfer] unsupported HID control request
libusb: warning [hid_submit_control_transfer] unsupported HID control request

00000000 8e 00 00 00 00 01 05 00 01 00 84 00 00 00 01 00 ................
00000010 00 00 28 00 44 00 65 00 76 00 69 00 63 00 65 00 ..(.D.e.v.i.c.e.
00000020 49 00 6e 00 74 00 65 00 72 00 66 00 61 00 63 00 I.n.t.e.r.f.a.c.
00000030 65 00 47 00 55 00 49 00 44 00 00 00 4e 00 00 00 e.G.U.I.D...N...
00000040 7b 00 31 00 44 00 34 00 42 00 32 00 33 00 36 00 {.1.D.4.B.2.3.6.
00000050 35 00 2d 00 34 00 37 00 34 00 39 00 2d 00 34 00 5.-.4.7.4.9.-.4.
00000060 38 00 45 00 41 00 2d 00 42 00 33 00 38 00 41 00 8.E.A.-.B.3.8.A.
00000070 2d 00 37 00 43 00 36 00 46 00 44 00 44 00 44 00 -.7.C.6.F.D.D.D.
00000080 44 00 37 00 45 00 32 00 36 00 7d 00 00 00 D.7.E.2.6.}...

Releasing interface 0...
Releasing interface 1...
Releasing interface 2...
Closing device...

第一个hid接口用于报告数字化仪，我认为它已经被系统要求。我猜这是问题所在，因为我试图删除两个隐藏界面并重复该过程。这次设备已成功打开。

但是，Mac OS上没有出现相同的问题。所以我想知道是否有人对解决Windows上的问题有任何建议？

Answer 1

这可能是Chrome问题。我一直在研究用于连接Windows上的USB设备的新后端，该后端应该更可靠，尤其是对于复杂的复合设备。

请从https://www.google.com/chrome/canary/安装Chrome Canary通道（至少为84.0.4110.2版），然后尝试打开chrome：// flags标志中的“启用新USB后端”。

让我知道这是否可以解决问题。

无法在Windows上打开具有多个接口USB设备的设备

1 个答案: