android验证底层驱动是否上报正常

确定底层驱动是否上报之前，先确定dev目录下相应的节点是否生成，然后是否getevent命令查看当前挂载的驱动设备.

例如：

C:\Documents and Settings\Administrator>adb shell
root@android:/ # getevent
getevent
add device 1: /dev/input/event4
  name:     "humidity"
add device 2: /dev/input/event3
  name:     "temperature"
add device 3: /dev/input/event2
  name:     "lightsensor-level"
add device 4: /dev/input/event0
  name:     "rk29-keypad"
add device 5: /dev/input/event1
  name:     "gslX680"

采用getevent命令可以查看底层驱动上报是否正常，getevent命令使用介绍如下：

Usage: getevent [-t] [-n] [-s switchmask] [-S] [-v [mask]] [-d] [-p] [-i] [-l] [

-q] [-c count] [-r] [device]
    -t: show time stamps
    -n: don't print newlines
    -s: print switch states for given bits
    -S: print all switch states
    -v: verbosity mask (errs=1, dev=2, name=4, info=8, vers=16, pos. events=32,
props=64)
    -d: show HID descriptor, if available
    -p: show possible events (errs, dev, name, pos. events)
    -i: show all device info and possible events
    -l: label event types and names in plain text
    -q: quiet (clear verbosity mask)
    -c: print given number of events then exit

    -r: print rate events are received

例如：

C:\Documents and Settings\Administrator>adb shell
root@android:/ # getevent -lp /dev/input/event4
getevent -lp /dev/input/event4
add device 1: /dev/input/event4
  name:     "humidity"
  events:
    ABS (0003): ABS_GAS               : value 10, min 0, max 65535, fuzz 0, flat
0, resolution 0
  input props:
    <none>

有如上信息输出，说明底层驱动可以正常上报参数了，需要注意的一点就是，不要在getevent命令之后立马使用getevent -lp device命令，最好建两个窗口操作