USB 驱动学习开始（一）

asus@ubuntu:~$ cat /proc/bus/input/devices

I: Bus=0003 Vendor=046d Product=c019 Version=0111

N: Name="Logitech USB Optical Mouse"
P: Phys=usb-0000:00:03.1-2/input0
S: Sysfs=/devices/pci0000:00/0000:00:03.1/usb3/3-2/3-2:1.0/input/input14
U: Uniq=
H: Handlers=mouse0 event5
B: PROP=0
B: EV=17
B: KEY=ff0000 0 0 0 0 0 0 0 0
B: REL=143
B: MSC=10

asus@ubuntu:/sys/devices/pci0000:00/0000:00:03.1/usb3/3-2/3-2:1.0/input/input14$ ls
capabilities  event5  modalias  name  power       subsystem  uniq
device        id      mouse0    phys  properties  uevent
asus@ubuntu:/sys/devices/pci0000:00/0000:00:03.1/usb3/3-2/3-2:1.0/input/input14$ pwd
/sys/devices/pci0000:00/0000:00:03.1/usb3/3-2/3-2:1.0/input/input14

asus@ubuntu:/sys/devices/pci0000:00/0000:00:03.1/usb3/3-2/3-2:1.0/input/input14$ 

USB 鼠标的接口是：3-2:1.0,

USB 鼠标的设备名：3-2,使用的是第一个配置，接口的编号为0.