使用libusb操作usb的问题

winxp-pic 2008-09-29 09:47:08

本人有一个usb,有驱动,但是不能加载到系统.我用libusb操作它,但是写的时候和读的时候总是出现Resource temporarily unavailable.
write ret =4,Resource temporarily unavailable//写入1234
usb_interrupt_read=-110,Resource temporarily unavailable,
write ret =0,Success
usb_interrupt_read=4,Resource temporarily unavailable,1234//读出1234
write ret =4,Resource temporarily unavailable
usb_interrupt_read=-110,Resource temporarily unavailable,1234
write ret =0,Success
usb_interrupt_read=4,Resource temporarily unavailable,1234
//----------------------------------------------------//
设备描述文件如下:
Bus 001 Device 002: ID 04b5:0320 ROHM LSI Systems USA, LLC
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.10
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 8
idVendor 0x04b5 ROHM LSI Systems USA, LLC
idProduct 0x0320
bcdDevice 3.00
iManufacturer 1 CPU.DOG
iProduct 2 USB HID Security Key
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 41
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x80
MaxPower 100mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 3 Human Interface Devices
bInterfaceSubClass 0 No Subclass
bInterfaceProtocol 0 None
iInterface 0
HID Device Descriptor:
bLength 9
bDescriptorType 33
bcdHID 1.10
bCountryCode 0 Not supported
bNumDescriptors 1
bDescriptorType 34 Report
wDescriptorLength 38
Report Descriptor: (length is 38)
Item(Global): Usage Page, data= [ 0x00 0xff ] 65280
(null)
Item(Local ): Usage, data= [ 0x01 ] 1
(null)
Item(Main ): Collection, data= [ 0x01 ] 1
Application
Item(Global): Usage Page, data= [ 0x01 ] 1
Generic Desktop Controls
Item(Local ): Usage, data= [ 0x46 ] 70
Vector
Item(Global): Logical Minimum, data= [ 0x00 ] 0
Item(Global): Logical Maximum, data= [ 0xff 0x00 ] 255
Item(Global): Report Count, data= [ 0x04 ] 4
Item(Global): Report Size, data= [ 0x08 ] 8
Item(Main ): Input, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile Bitfield
Item(Global): Usage Page, data= [ 0x08 ] 8
LEDs
Item(Local ): Usage, data= [ 0x2d ] 45
Ready
Item(Global): Logical Minimum, data= [ 0x00 ] 0
Item(Global): Logical Maximum, data= [ 0xff 0x00 ] 255
Item(Global): Report Count, data= [ 0x07 ] 7
Item(Global): Report Size, data= [ 0x08 ] 8
Item(Main ): Output, data= [ 0x00 ] 0
Data Array Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile Bitfield
Item(Main ): End Collection, data=none
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type none
Usage Type Data
wMaxPacketSize 0x0004 bytes 4 once
bInterval 10
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x02 EP 2 OUT
bmAttributes 3
Transfer Type Interrupt
Synch Type none
Usage Type Data
wMaxPacketSize 0x0008 bytes 8 once
bInterval 10
Language IDs: (length=4)
0409 English(US)

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