嵌入式 如何查看USB设备信息VID PID

方法一：在/etc/init.d/rcS中添加mount -t usbfs none /proc/bus/usb.

方法二：在shell中输入mount -t usbfs /proc/bus/usb /proc/bus/usb.

前提是在编译内核时选中usb device filesystem。

#　cat  /proc/bus/usb /device

T:  Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00Dev#=  1 Spd=12  MxCh=2
B:  Alloc=  0/900 us ( 0%),#Int=  1, #Iso=  0
D:  Ver= 1.10 Cls=09(hub  )Sub=00 Prot=00 MxPS=64 #Cfgs=  1
P:  Vendor=1d6b ProdID=0001 Rev= 2.06
S:  Manufacturer=Linux 2.6.32.2-ltlsohci_hcd
S:  Product=S3C24XX OHCI
S:  SerialNumber=s3c24xx
C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=  0mA
I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub  ) Sub=00Prot=00 Driver=hub
E:  Ad=81(I) Atr=03(Int.)MxPS=   2 Ivl=255ms

T:  Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01Dev#=  2 Spd=12  MxCh=4
D:  Ver= 1.10 Cls=09(hub  )Sub=00 Prot=00 MxPS= 8 #Cfgs=  1
P:  Vendor=0000 ProdID=0000 Rev= 1.25
C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=  0mA
I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub  ) Sub=00Prot=00 Driver=hub
E:  Ad=81(I) Atr=03(Int.)MxPS=   1 Ivl=255ms

T:  Bus=01 Lev=02 Prnt=02 Port=01 Cnt=01Dev#=  7 Spd=12  MxCh=0
D:  Ver= 2.00 Cls=ff(vend.) Sub=00 Prot=00 MxPS=64#Cfgs=  1
P:  Vendor=160a ProdID=3184 Rev= 2.05
S:  Manufacturer=VIANetworking Technologies, Inc.
S:  Product=VNT USB-802.11 Wireless LANAdapter
C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=500mA
I:* If#= 0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00Driver=vntwusb
E:  Ad=81(I) Atr=03(Int.) MxPS= 32 Ivl=1ms
E:  Ad=82(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms
E:  Ad=03(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms