I.MX6 linux eGalaxTouch 自动获取设备节点

                       I.MX6 linux eGalaxTouch 自动获取设备节点

                        \\\\\\\\\\\\\\-*- 目录 -*-/////////////
                        |  一. 需求：
                        |  二. /proc/bus/input/devices 内容：
                        |  三. 解决方法：
                        |  四. 实际应用：
                        --------------------------------------

一. 需求：
    获取eGalaxTouch的输入设备节点

二. /proc/bus/input/devices 内容：
    [email protected] /proc/bus/input$ cat /proc/bus/input/devices
    I: Bus=0019 Vendor=0001 Product=0001 Version=0100
    N: Name="gpio-keys"
    P: Phys=gpio-keys/input0
    S: Sysfs=/devices/platform/gpio-keys/input/input0
    U: Uniq=
    H: Handlers=kbd event0
    B: PROP=0
    B: EV=3
    B: KEY=100000 0 0 0

    I: Bus=0003 Vendor=0eef Product=7201 Version=0210
    N: Name="eGalax Inc. eGalaxTouch EXC7200-0031v1000"
    P: Phys=usb-fsl-ehci.1-1.3/input0
    S: Sysfs=/devices/platform/fsl-ehci.1/usb2/2-1/2-1.3/2-1.3:1.0/input/input1
    U: Uniq=
    H: Handlers=cpufreq_interactive
    B: PROP=0
    B: EV=1b
    B: KEY=421 0 30001 0 0 0 0 0 0 0 0
    B: ABS=100 3f
    B: MSC=10

    I: Bus=0006 Vendor=0eef Product=0020 Version=0001
    N: Name="eGalaxTouch Virtual Device for Multi"
    P: Phys=
    S: Sysfs=/devices/virtual/input/input2
    U: Uniq=
    H: Handlers=cpufreq_interactive event1
    B: PROP=2
    B: EV=b
    B: KEY=400 0 0 0 0 0 0 0 0 0 0
    B: ABS=6608000 1000003

    I: Bus=0006 Vendor=0eef Product=0010 Version=0001
    N: Name="eGalaxTouch Virtual Device for Single"
    P: Phys=
    S: Sysfs=/devices/virtual/input/input3
    U: Uniq=
    H: Handlers=event2
    B: PROP=2
    B: EV=b
    B: KEY=30000 0 0 0 0 0 0 0 0
    B: ABS=3

    [email protected] /proc/bus/input$ 

三. 解决方法：
    1. 采用shell脚本的进行解决；
    2. shell脚本如下：
        inputCheckLine=`cat /proc/bus/input/devices | grep -n "Vendor=0eef" | grep "Product=0020 Version=0001"| awk -F: ‘{print $1}‘`
        touchEvent=`sed -n "$((${inputCheckLine}+5))p" /proc/bus/input/devices | grep -o "event."`

四. 实际应用：
    ......
    while [ -z $touchEvent ]
    do
        inputCheckLine=`cat /proc/bus/input/devices | grep -n "Vendor=0eef" | grep "Product=0020 Version=0001"| awk -F: ‘{print $1}‘`
        touchEvent=`sed -n "$((${inputCheckLine}+5))p" /proc/bus/input/devices | grep -o "event."`
        echo "please hang up USB TOUCH !"
        usleep 10
    done
    ......
    export TSLIB_TSDEVICE=/dev/input/${touchEvent}
    export QWS_MOUSE_PROTO=tslib:/dev/input/${touchEvent}
    ......