我正尝试使用谷歌浏览器webUSB api访问通过USB连接到我的计算机的读卡器。谷歌浏览器在尝试声明界面时出现USBUSB API错误
依照指示操作,here,一切正常,直到我尝试声称这给了我一个错误的接口:
“无法要求接口0:设备或资源忙”
看来,我OS(linux mint)已经访问过这个设备,并且不允许操作员访问。
任何建议如何克服这一点?
编辑:
当我解除绑定的司机,我收到以下错误:
“无法要求接口0:没有这样的文件或目录”
另外这里的lsusb的输出-v此设备:
Bus 001 Device 012: ID 0ca6:a050 Castles Technology Co., Ltd
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 2 Communications
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x0ca6 Castles Technology Co., Ltd
idProduct 0xa050
bcdDevice 0.00
iManufacturer 1 Linux 2.6.32.9 with dwc_otg_pcd
iProduct 2 EFT-POS Terminal
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 67
bNumInterfaces 2
bConfigurationValue 2
iConfiguration 3 EFT-POS Terminal
bmAttributes 0xc0
Self Powered
MaxPower 2mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 2 Communications
bInterfaceSubClass 2 Abstract (modem)
bInterfaceProtocol 1 AT-commands (v.25ter)
iInterface 4 CDC Abstract Control Model (ACM)
CDC Header:
bcdCDC 1.10
CDC Call Management:
bmCapabilities 0x00
bDataInterface 1
CDC ACM:
bmCapabilities 0x02
line coding and serial state
CDC Union:
bMasterInterface 0
bSlaveInterface 1
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x000a 1x 10 bytes
bInterval 32
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 10 CDC Data
bInterfaceSubClass 0 Unused
bInterfaceProtocol 0
iInterface 5 CDC ACM Data
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x01 EP 1 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 0
Device Qualifier (for other device speed):
bLength 10
bDescriptorType 6
bcdUSB 2.00
bDeviceClass 2 Communications
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
bNumConfigurations 1
Device Status: 0x0001
Self Powered
由于内核驱动程序被绑定,第一个错误是预期的。第二,我需要更多地了解该设备。你能从'lsusb -v'发布完整的描述符吗? –
@ReillyGrant很长,我把我的问题的编辑部分。 – JDrake