（转）查看USB设备
2024-06-11 16:15:52
本文转载自： 查看USB设备
（1） lsusb
# 列出所有设备
$ lsusb
Bus 001 Device 002: ID 05a3:9310 ARC International
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 003: ID 0e0f:0002 VMware, Inc. Virtual USB Hub
Bus 002 Device 002: ID 0e0f:0003 VMware, Inc. Virtual Mouse
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub# 打印指定USB设备的具体的描述符 -d 指定usb -v 显示详细信息
lsusb -d 05a3:9310 -v
（2）ll /sys/bus/usb/devices
输出结果如下：
book@100ask:/sys/bus/usb/devices$ cd /sys/bus/usb/devices
book@100ask:/sys/bus/usb/devices$ ls
1-0:1.0 1-1 1-1:1.0 1-1:1.1 1-1:1.2 1-1:1.3 2-0:1.0 2-1 2-1:1.0 2-2 2-2:1.0 usb1 usb2
book@100ask:/sys/bus/usb/devices$ ll
总用量 0
drwxr-xr-x 2 root root 0 4月 18 18:04 ./
drwxr-xr-x 4 root root 0 4月 18 17:29 ../
lrwxrwxrwx 1 root root 0 4月 18 17:29 1-0:1.0 -> ../../../devices/pci0000:00/0000:00:11.0/0000:02:03.0/usb1/1-0:1.0/
lrwxrwxrwx 1 root root 0 4月 18 18:04 1-1 -> ../../../devices/pci0000:00/0000:00:11.0/0000:02:03.0/usb1/1-1/
lrwxrwxrwx 1 root root 0 4月 18 18:04 1-1:1.0 -> ../../../devices/pci0000:00/0000:00:11.0/0000:02:03.0/usb1/1-1/1-1:1.0/
lrwxrwxrwx 1 root root 0 4月 18 18:04 1-1:1.1 -> ../../../devices/pci0000:00/0000:00:11.0/0000:02:03.0/usb1/1-1/1-1:1.1/
lrwxrwxrwx 1 root root 0 4月 18 18:04 1-1:1.2 -> ../../../devices/pci0000:00/0000:00:11.0/0000:02:03.0/usb1/1-1/1-1:1.2/
lrwxrwxrwx 1 root root 0 4月 18 18:04 1-1:1.3 -> ../../../devices/pci0000:00/0000:00:11.0/0000:02:03.0/usb1/1-1/1-1:1.3/
lrwxrwxrwx 1 root root 0 4月 18 17:29 2-0:1.0 -> ../../../devices/pci0000:00/0000:00:11.0/0000:02:00.0/usb2/2-0:1.0/
lrwxrwxrwx 1 root root 0 4月 18 17:29 2-1 -> ../../../devices/pci0000:00/0000:00:11.0/0000:02:00.0/usb2/2-1/
lrwxrwxrwx 1 root root 0 4月 18 17:29 2-1:1.0 -> ../../../devices/pci0000:00/0000:00:11.0/0000:02:00.0/usb2/2-1/2-1:1.0/
lrwxrwxrwx 1 root root 0 4月 18 17:29 2-2 -> ../../../devices/pci0000:00/0000:00:11.0/0000:02:00.0/usb2/2-2/
lrwxrwxrwx 1 root root 0 4月 18 17:29 2-2:1.0 -> ../../../devices/pci0000:00/0000:00:11.0/0000:02:00.0/usb2/2-2/2-2:1.0/
lrwxrwxrwx 1 root root 0 4月 18 17:29 usb1 -> ../../../devices/pci0000:00/0000:00:11.0/0000:02:03.0/usb1/
lrwxrwxrwx 1 root root 0 4月 18 17:29 usb2 -> ../../../devices/pci0000:00/0000:00:11.0/0000:02:00.0/usb2/
对上面输出结果解释如下：
usbx/：表示第x个总线x-y:a.b/的目录格式：x表示总线号，y表示端口，a表示配置，b表示接口。
（3）cat /sys/kernel/debug/usb/devices
信息的详细解析可以参照 Linux源代码中 Documentation/usb/proc_usb_info.txt 文件。
book@100ask:/sys/bus/usb/devices$ sudo cat /sys/kernel/debug/usb/devices
[sudo] book 的密码：T: Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=480 MxCh= 6
B: Alloc= 0/800 us ( 0%), #Int= 0, #Iso= 0
D: Ver= 2.00 Cls=09(hub ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1
P: Vendor=1d6b ProdID=0002 Rev= 4.13
S: Manufacturer=Linux 4.13.0-36-generic ehci_hcd
S: Product=EHCI Host Controller
S: SerialNumber=0000:02:03.0
C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr= 0mA
I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub
E: Ad=81(I) Atr=03(Int.) MxPS= 4 Ivl=256msT: Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 2 Spd=480 MxCh= 0
D: Ver= 2.00 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs= 1
P: Vendor=05a3 ProdID=9310 Rev= 0.00
S: Manufacturer=HD Camera Manufacturer
S: Product=USB 2.0 Camera
C:* #Ifs= 4 Cfg#= 1 Atr=80 MxPwr=500mA
A: FirstIf#= 0 IfCount= 2 Cls=0e(video) Sub=03 Prot=00
A: FirstIf#= 2 IfCount= 2 Cls=01(audio) Sub=00 Prot=00
I:* If#= 0 Alt= 0 #EPs= 1 Cls=0e(video) Sub=01 Prot=00 Driver=uvcvideo
E: Ad=83(I) Atr=03(Int.) MxPS= 16 Ivl=4ms
I:* If#= 1 Alt= 0 #EPs= 0 Cls=0e(video) Sub=02 Prot=00 Driver=uvcvideo
I: If#= 1 Alt= 1 #EPs= 1 Cls=0e(video) Sub=02 Prot=00 Driver=uvcvideo
E: Ad=81(I) Atr=05(Isoc) MxPS= 128 Ivl=125us
I: If#= 1 Alt= 2 #EPs= 1 Cls=0e(video) Sub=02 Prot=00 Driver=uvcvideo
E: Ad=81(I) Atr=05(Isoc) MxPS= 256 Ivl=125us
I: If#= 1 Alt= 3 #EPs= 1 Cls=0e(video) Sub=02 Prot=00 Driver=uvcvideo
E: Ad=81(I) Atr=05(Isoc) MxPS= 800 Ivl=125us
I: If#= 1 Alt= 4 #EPs= 1 Cls=0e(video) Sub=02 Prot=00 Driver=uvcvideo
E: Ad=81(I) Atr=05(Isoc) MxPS=1600 Ivl=125us
I: If#= 1 Alt= 5 #EPs= 1 Cls=0e(video) Sub=02 Prot=00 Driver=uvcvideo
E: Ad=81(I) Atr=05(Isoc) MxPS=2400 Ivl=125us
I: If#= 1 Alt= 6 #EPs= 1 Cls=0e(video) Sub=02 Prot=00 Driver=uvcvideo
E: Ad=81(I) Atr=05(Isoc) MxPS=3072 Ivl=125us
I:* If#= 2 Alt= 0 #EPs= 0 Cls=01(audio) Sub=01 Prot=00 Driver=snd-usb-audio
I:* If#= 3 Alt= 0 #EPs= 0 Cls=01(audio) Sub=02 Prot=00 Driver=snd-usb-audio
I: If#= 3 Alt= 1 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=snd-usb-audio
E: Ad=84(I) Atr=05(Isoc) MxPS= 400 Ivl=1msT: Bus=02 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=12 MxCh= 2
B: Alloc= 17/900 us ( 2%), #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= 4.13
S: Manufacturer=Linux 4.13.0-36-generic uhci_hcd
S: Product=UHCI Host Controller
S: SerialNumber=0000:02:00.0
C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr= 0mA
I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub
E: Ad=81(I) Atr=03(Int.) MxPS= 2 Ivl=255msT: Bus=02 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 2 Spd=12 MxCh= 0
D: Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1
P: Vendor=0e0f ProdID=0003 Rev= 1.03
S: Manufacturer=VMware
S: Product=VMware Virtual USB Mouse
C:* #Ifs= 1 Cfg#= 1 Atr=c0 MxPwr= 0mA
I:* If#= 0 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=01 Prot=02 Driver=usbhid
E: Ad=81(I) Atr=03(Int.) MxPS= 8 Ivl=1msT: Bus=02 Lev=01 Prnt=01 Port=01 Cnt=02 Dev#= 3 Spd=12 MxCh= 7
D: Ver= 1.10 Cls=09(hub ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1
P: Vendor=0e0f ProdID=0002 Rev= 1.00
S: Product=VMware Virtual USB Hub
C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr= 0mA
I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub
E: Ad=81(I) Atr=03(Int.) MxPS= 1 Ivl=255ms
结果解释如下：
Each line is tagged with a one-character ID for that line:T = Topology (etc.)
B = Bandwidth (applies only to USB host controllers, which arevirtualized as root hubs)
D = Device descriptor info.
P = Product ID info. (from Device descriptor, but they won't fittogether on one line)
S = String descriptors.
C = Configuration descriptor info. (* = active configuration)
I = Interface descriptor info.
E = Endpoint descriptor info.Legend:d = decimal number (may have leading spaces or 0's)x = hexadecimal number (may have leading spaces or 0's)s = stringTopology info:T: Bus=dd Lev=dd Prnt=dd Port=dd Cnt=dd Dev#=ddd Spd=dddd MxCh=dd
| | | | | | | | |__MaxChildren
| | | | | | | |__Device Speed in Mbps
| | | | | | |__DeviceNumber
| | | | | |__Count of devices at this level
| | | | |__Connector/Port on Parent for this device
| | | |__Parent DeviceNumber
| | |__Level in topology for this bus
| |__Bus number
|__Topology info tagSpeed may be:1.5 Mbit/s for low speed USB12 Mbit/s for full speed USB480 Mbit/s for high speed USB (added for USB 2.0);also used for Wireless USB, which has no fixed speed5000 Mbit/s for SuperSpeed USB (added for USB 3.0)For reasons lost in the mists of time, the Port number is alwaystoo low by 1. For example, a device plugged into port 4 willshow up with "Port=03".Bandwidth info:
B: Alloc=ddd/ddd us (xx%), #Int=ddd, #Iso=ddd
| | | |__Number of isochronous requests
| | |__Number of interrupt requests
| |__Total Bandwidth allocated to this bus
|__Bandwidth info tagBandwidth allocation is an approximation of how much of one frame(millisecond) is in use. It reflects only periodic transfers, whichare the only transfers that reserve bandwidth. Control and bulktransfers use all other bandwidth, including reserved bandwidth thatis not used for transfers (such as for short packets).The percentage is how much of the "reserved" bandwidth is scheduled bythose transfers. For a low or full speed bus (loosely, "USB 1.1"),90% of the bus bandwidth is reserved. For a high speed bus (loosely,"USB 2.0") 80% is reserved.Device descriptor info & Product ID info:D: Ver=x.xx Cls=xx(s) Sub=xx Prot=xx MxPS=dd #Cfgs=dd
P: Vendor=xxxx ProdID=xxxx Rev=xx.xxwhere
D: Ver=x.xx Cls=xx(sssss) Sub=xx Prot=xx MxPS=dd #Cfgs=dd
| | | | | | |__NumberConfigurations
| | | | | |__MaxPacketSize of Default Endpoint
| | | | |__DeviceProtocol
| | | |__DeviceSubClass
| | |__DeviceClass
| |__Device USB version
|__Device info tag #1where
P: Vendor=xxxx ProdID=xxxx Rev=xx.xx
| | | |__Product revision number
| | |__Product ID code
| |__Vendor ID code
|__Device info tag #2String descriptor info:S: Manufacturer=ssss
| |__Manufacturer of this device as read from the device.
| For USB host controller drivers (virtual root hubs) this may
| be omitted, or (for newer drivers) will identify the kernel
| version and the driver which provides this hub emulation.
|__String info tagS: Product=ssss
| |__Product description of this device as read from the device.
| For older USB host controller drivers (virtual root hubs) this
| indicates the driver; for newer ones, it's a product (and vendor)
| description that often comes from the kernel's PCI ID database.
|__String info tagS: SerialNumber=ssss
| |__Serial Number of this device as read from the device.
| For USB host controller drivers (virtual root hubs) this is
| some unique ID, normally a bus ID (address or slot name) that
| can't be shared with any other device.
|__String info tagConfiguration descriptor info:C:* #Ifs=dd Cfg#=dd Atr=xx MPwr=dddmA
| | | | | |__MaxPower in mA
| | | | |__Attributes
| | | |__ConfiguratioNumber
| | |__NumberOfInterfaces
| |__ "*" indicates the active configuration (others are " ")
|__Config info tagUSB devices may have multiple configurations, each of which actrather differently. For example, a bus-powered configurationmight be much less capable than one that is self-powered. Onlyone device configuration can be active at a time; most deviceshave only one configuration.Each configuration consists of one or more interfaces. Eachinterface serves a distinct "function", which is typically boundto a different USB device driver. One common example is a USBspeaker with an audio interface for playback, and a HID interfacefor use with software volume control.Interface descriptor info (can be multiple per Config):I:* If#=dd Alt=dd #EPs=dd Cls=xx(sssss) Sub=xx Prot=xx Driver=ssss
| | | | | | | | |__Driver name
| | | | | | | | or "(none)"
| | | | | | | |__InterfaceProtocol
| | | | | | |__InterfaceSubClass
| | | | | |__InterfaceClass
| | | | |__NumberOfEndpoints
| | | |__AlternateSettingNumber
| | |__InterfaceNumber
| |__ "*" indicates the active altsetting (others are " ")
|__Interface info tagA given interface may have one or more "alternate" settings.For example, default settings may not use more than a smallamount of periodic bandwidth. To use significant fractionsof bus bandwidth, drivers must select a non-default altsetting.Only one setting for an interface may be active at a time, andonly one driver may bind to an interface at a time. Most deviceshave only one alternate setting per interface.Endpoint descriptor info (can be multiple per Interface):E: Ad=xx(s) Atr=xx(ssss) MxPS=dddd Ivl=dddss
| | | | |__Interval (max) between transfers
| | | |__EndpointMaxPacketSize
| | |__Attributes(EndpointType)
| |__EndpointAddress(I=In,O=Out)
|__Endpoint info tagThe interval is nonzero for all periodic (interrupt or isochronous)endpoints. For high speed endpoints the transfer interval may bemeasured in microseconds rather than milliseconds.For high speed periodic endpoints, the "MaxPacketSize" reflectsthe per-microframe data transfer size. For "high bandwidth"endpoints, that can reflect two or three packets (for up to3KBytes every 125 usec) per endpoint.With the Linux-USB stack, periodic bandwidth reservations use thetransfer intervals and sizes provided by URBs, which can be lessthan those found in endpoint descriptor.（4）dmesg
#sudo rmmod uvcvideo
#sudo modprobe uvcvideo
#dmesg[ 5066.889529] usbcore: deregistering interface driver uvcvideo
[ 5146.884778] uvcvideo: Found UVC 1.00 device USB 2.0 Camera (05a3:9310)
[ 5146.904548] uvcvideo 1-1:1.0: Entity type for entity Extension 4 was not initialized!
[ 5146.904550] uvcvideo 1-1:1.0: Entity type for entity Processing 3 was not initialized!
[ 5146.904551] uvcvideo 1-1:1.0: Entity type for entity Camera 1 was not initialized!
[ 5146.905329] input: USB 2.0 Camera: HD USB Camera as /devices/pci0000:00/0000:00:11.0/0000:02:03.0/usb1/1-1/1-1:1.0/input/input7
[ 5146.905954] usbcore: registered new interface driver uvcvideo
[ 5146.905955] USB Video Class driver (1.1.1)
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