MTK6577---鉵摸屏自动按键脚本

一. 自动测试
1. 一个问题
假设要实现这样的功能:  依次点击下面图片上的B1 B2 B3,该如何实现呢?

这就需要模拟点击触摸屏的事件,最好是命令行的这样可以写成脚本.
android 下有自动测试工具moneky,可以实现自动点击
adb shell monkey -p com.test 1000
但是它这个好像是随机点的,没有固定按键的功能(如果有人知道,怎么用monkey实现,请告诉我).
既然monkey解决不了问题,那就再找另一个方法
2. 查找触摸屏属于event几
手机是mt6575
在摸拟器中,触摸屏是event0,但在真实的机子上不一定是event0,所以需要先查看一下用命令getevent

sun@ubuntu:/tmp$ adb shell getevent
add device 1: /dev/input/event4
  name: "AVRCP"
add device 2: /dev/input/event3
  name: "mtk-tpd"
could not get driver version for /dev/input/mouse0, Not a typewriter
add device 3: /dev/input/event1
  name: "hwmdata"
add device 4: /dev/input/event0
  name: "ACCDET"
could not get driver version for /dev/input/mice, Not a typewriter
add device 5: /dev/input/event2
  name: "mtk-kpd"

注: device号和event号不是一样的,这儿只关心event号
通过上面可以看到触摸屏name=mtk-tpd, 是event3
如果不放心,可以测试一下:

sun@ubuntu:/tmp$ adb shell cat /dev/input/event0
^C
sun@ubuntu:/tmp$ adb shell cat /dev/input/event1
^C
sun@ubuntu:/tmp$ adb shell cat /dev/input/event2
^C
sun@ubuntu:/tmp$ adb shell cat /dev/input/event3
??C??^C
J
?C
sun@ubuntu:/tmp$ adb shell cat /dev/input/event4
^C

执行adb shell cat /dev/input/event0时,在屏幕上随便点击,发现只有event3上面有输出.
这样就确定了,手机上的触摸屏是event3
3.确定按键命令
执行命令 adb shell getevent /dev/input/event3
然后在屏幕上迅速的按一下,发现有如下输出:

sun@ubuntu:/work/cong/driver$ adb shell getevent /dev/input/event3
0001 014a 00000001
0003 0030 00000001
0003 0035 00000028
0003 0036 00000112
0003 0039 00000001
0000 0002 00000000
0000 0000 00000000
0003 0030 00000001
0003 0035 00000028
0003 0036 00000112
0003 0039 00000001
0000 0002 00000000
0000 0000 00000000
0001 014a 00000000
0000 0002 00000000
0000 0000 00000000

那么这些输出是什么意思呢?
这可以通过给getevent加上-d -l参数来查看
-d: show HID descriptor, if available
-l: label event types and names in plain text

sun@ubuntu:/work/cong/driver$ adb shell getevent -d -l /dev/input/event3
EV_KEY       BTN_TOUCH            DOWN
EV_ABS       ABS_MT_TOUCH_MAJOR   00000001
EV_ABS       ABS_MT_POSITION_X    0000003e
EV_ABS       ABS_MT_POSITION_Y    00000103
EV_ABS       ABS_MT_TRACKING_ID   00000001
EV_SYN       SYN_MT_REPORT        00000000
EV_SYN       SYN_REPORT           00000000
EV_ABS       ABS_MT_TOUCH_MAJOR   00000001
EV_ABS       ABS_MT_POSITION_X    0000003e
EV_ABS       ABS_MT_POSITION_Y    00000103
EV_ABS       ABS_MT_TRACKING_ID   00000001
EV_SYN       SYN_MT_REPORT        00000000
EV_SYN       SYN_REPORT           00000000
EV_ABS       ABS_MT_TOUCH_MAJOR   00000001
EV_ABS       ABS_MT_POSITION_X    0000003e
EV_ABS       ABS_MT_POSITION_Y    00000103
EV_ABS       ABS_MT_TRACKING_ID   00000001
EV_SYN       SYN_MT_REPORT        00000000
EV_SYN       SYN_REPORT           00000000
EV_ABS       ABS_MT_TOUCH_MAJOR   00000001
EV_ABS       ABS_MT_POSITION_X    0000003e
EV_ABS       ABS_MT_POSITION_Y    00000103
EV_ABS       ABS_MT_TRACKING_ID   00000001
EV_SYN       SYN_MT_REPORT        00000000
EV_SYN       SYN_REPORT           00000000
EV_KEY       BTN_TOUCH            UP
EV_SYN       SYN_MT_REPORT        00000000
EV_SYN       SYN_REPORT           00000000

其实上面的 EV_KEY, EV_ABS等都是在内核的 include/linux/input.h 这个文件中定义的

#define EV_SYN          0x00
#define EV_KEY          0x01
#define EV_REL          0x02
#define EV_ABS          0x03

#define ABS_MT_TOUCH_MAJOR  0x30
#define ABS_MT_POSITION_X   0x35
#define ABS_MT_POSITION_Y   0x36
#define ABS_MT_TRACKING_ID  0x39

这样对应起来就是:

EV_KEY       BTN_TOUCH            DOWN
0001 014a 00000001

EV_ABS       ABS_MT_TOUCH_MAJOR   00000001
EV_ABS       ABS_MT_POSITION_X    0000003e
EV_ABS       ABS_MT_POSITION_Y    000000ef
EV_ABS       ABS_MT_TRACKING_ID   00000001
0003 0030 00000001
0003 0035 00000028
0003 0036 00000112
0003 0039 00000001

EV_SYN       SYN_MT_REPORT        00000000
EV_SYN       SYN_REPORT           00000000
0000 0002 00000000
0000 0000 00000000

EV_ABS       ABS_MT_TOUCH_MAJOR   00000001
EV_ABS       ABS_MT_POSITION_X    0000003e
EV_ABS       ABS_MT_POSITION_Y    000000ef
EV_ABS       ABS_MT_TRACKING_ID   00000001
0003 0030 00000001
0003 0035 00000028
0003 0036 00000112
0003 0039 00000001

EV_SYN       SYN_MT_REPORT        00000000
EV_SYN       SYN_REPORT           00000000
0000 0002 00000000
0000 0000 00000000

EV_KEY       BTN_TOUCH            UP
0001 014a 00000000

EV_SYN       SYN_MT_REPORT        00000000
EV_SYN       SYN_REPORT           00000000
0000 0002 00000000
0000 0000 00000000

发现上面是发送了两次X Y坐标,手点的有抖动嘛
4. 编写脚本
实现自动按键时,需要把重复发送XY坐标值去掉就可以了
无限循环:

#!/bin/sh
btn_press()
{
    #button Down
    adb shell sendevent /dev/input/event3 1 330 1

    #MAJOR X Y ID
    adb shell sendevent /dev/input/event3 3 48 1
    adb shell sendevent /dev/input/event3 3 53 40
    adb shell sendevent /dev/input/event3 3 54 250
    adb shell sendevent /dev/input/event3 3 57 1

    #SYN_MT_REPORT SYM
    adb shell sendevent /dev/input/event3 0 2 0
    adb shell sendevent /dev/input/event3 0 0 0

    #button up
    adb shell sendevent /dev/input/event3 1 330 0
    adb shell sendevent /dev/input/event3 0 2 0
    adb shell sendevent /dev/input/event3 0 0 0
}
while :
do
    btn_press ;
done

注:
1. getevent命令如下

sun@ubuntu:/tmp$ adb shell getevent -h
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

2. 获取屏幕按键坐标
Settings --> Developer Options --> Pointer location
然后在屏幕上方就可以看到X Y坐标了
参考文章:
http://forum.xda-developers.com/showthread.php?t=1875094