openwrt wiki 为按键添加功能--简单方便
The first step is to make Hotplug execute scripts in /etc/hotplug.d/button when a button is clicked. Modify /etc/hotplug2.rules — remove '^' before 'button' as follow:
$include /etc/hotplug2-common.rules SUBSYSTEM ~~ (^net$|^input$|button$|^usb$|^ieee1394$|^block$|^atm$|^zaptel$|^tty$) { exec /sbin/hotplug-call %SUBSYSTEM% } DEVICENAME == watchdog { exec /sbin/watchdog -t 5 /dev/watchdog next-event }
The second step is to find out the internal name of the button you want to use: some images use generic names such as BTN_1, BTN_2, others have more specific ones like reset, wps, etc. Run the following:
# mkdir -p /etc/hotplug.d/button
Create the file /etc/hotplug.d/button/buttons with your favorite text editor, paste the following:
#!/bin/sh logger $BUTTON logger $ACTION
Save and exit. Now press the button you want to use, then run logread.
Jan 1 00:01:15 OpenWrt user.notice root: BTN_1 Jan 1 00:01:15 OpenWrt user.notice root: pressed Jan 1 00:01:16 OpenWrt user.notice root: BTN_1 Jan 1 00:01:16 OpenWrt user.notice root: released
BTN_1 is the name of the button you want to use. If you want or need to use another button, replace every instance of BTN_1 in the rest of this document with the correct text. From now on, there are several possible approaches: the first uses the 00-button script from the atheros target, the other a simpler shell script.
notice
If you want to run programs from hotplug's scripts you need to be sure PATH and the like are initialized properly, scripts invoked by hotplug only have a default env. Especially if you install stuff into nonstandard locations like /opt/usr/bin. It's possible by adding . /etc/profile after #!/bin/sh
#!/bin/sh . /etc/profile
Using Atheros' 00-button + UCI
If you've installed the full version of wget, run the following:
# wget -O /etc/hotplug.d/button/00-button https://dev.openwrt.org/export/36332/trunk/target/linux/atheros/base-files/etc/hotplug.d/button/00-button
If you only have wget-nossl and don't want to or can't upgrade, create /etc/hotplug.d/button/00-button with your favorite editor, then paste the following: （下面的内容就是上面wget下载的00-button文件）
#!/bin/sh . /lib/functions.sh do_button () { local button local action local handler local min local max config_get button $1 button config_get action $1 action config_get handler $1 handler config_get min $1 min config_get max $1 max [ "$ACTION" = "$action" -a "$BUTTON" = "$button" -a -n "$handler" ] && { [ -z "$min" -o -z "$max" ] && eval $handler [ -n "$min" -a -n "$max" ] && { [ $min -le $SEEN -a $max -ge $SEEN ] && eval $handler } } } config_load system config_foreach do_button button
Please note that after r34793 /etc/functions.sh → /lib/functions.sh so if you are using an old version change it!
Save and exit, then issue these commands:
uci add system button uci set system.@button[-1].button=BTN_1 uci set system.@button[-1].action=pressed uci set system.@button[-1].handler='logger BTN_1 pressed' uci commit system
button is the name as the button, action 是事件 (两个值: pressed(按下) 和released(释放)), handler 包含当按键时间发生时执行的命令，也可以用一个脚本代替
You may need to reboot the router the make the change effective (mine would work with the simple shell script just fine but wouldn't budge when using the 00-button script — Frex 2011/03/25 22:29). If this works, you can change the handler to something more useful, and add more button handlers.
Examples
Example 1: Toggle Wi-Fi radio with a button press 用按键触发wifi
uci add system button uci set system.@button[-1].button=wps uci set system.@button[-1].action=pressed uci set system.@button[-1].handler='uci set wireless.@wifi-device[0].disabled=1 && wifi' uci commit system
Example 2: Assign two different functions to the same button: short press VS long press. This relies on tracking the released event rather than the pressed event. 用一个按键定义两个功能：短按和长按，长按也可以规定时间长度，根据时间长度来设置不同的功能。
uci add system button uci set system.@button[-1].button=BTN_1 uci set system.@button[-1].action=released uci set system.@button[-1].handler='logger timed pressed: 0-3s' uci set system.@button[-1].min=0 uci set system.@button[-1].max=3 uci add system button uci set system.@button[-1].button=BTN_1 uci set system.@button[-1].action=released uci set system.@button[-1].handler='logger timed pressed: 8-10s' uci set system.@button[-1].min=8 uci set system.@button[-1].max=10 uci commit system
Example 3: Unmount USB storage using a long-ish press 长按卸载usb
uci add system button uci set system.@button[-1].button=BTN_1 uci set system.@button[-1].action=released uci set system.@button[-1].handler="for i in \$(mount | awk '/dev\/sd[b-z]/ { print \$1}'); do umount \$i; done" #卸载的命令，可写成脚本 uci set system.@button[-1].min=5 uci set system.@button[-1].max=10 uci commit system
Example 4: Restore defaults 恢复出厂设置
config button
option button reset
option action released
option handler "firstboot && reboot"
option min 5
option max 30
Example 5: Toggle Wi-Fi using a script 使用脚本命令触发wifi
config button
option button wps
option action released
option handler "/usr/bin/wifionoff"
option min 0
option max 3
You'll have to create the file /usr/bin/wifionoff and paste this:
#!/bin/sh SW=$(uci -q get wireless.@wifi-device[0].disabled) [ "$SW" == "1" ] && uci set wireless.@wifi-device[0].disabled=0 #当前是关闭就开启 [ "$SW" == "1" ] || uci set wireless.@wifi-device[0].disabled=1 #当前是开启就关闭 wifi
Another option for wifionoff is this script (doesn't store the state in uci, so it remains what is set in the configuration) You can also call this script eg. from cron, to switch off your wifi at night.
#!/bin/sh STATEFILE="/tmp/wifionoff.state" if [ $# -eq 1 ]; then #参数总个数 case $1 in "up"|"on") STATE=off ;; "down"|"off") STATE=on ;; esac else if [ ! -e ${STATEFILE} ]; then STATE=on else . ${STATEFILE} fi fi if [ -z ${STATE} ]; then STATE=on fi if [ ${STATE} == "on" ]; then /sbin/wifi down STATE=off else /sbin/wifi up STATE=on fi echo "STATE=${STATE}" > ${STATEFILE}
Example 6: Set transmission-daemon alt-speed, enable or disable.Short press will activate alt-speed or longer press will deactivate alt-speed and also turns on qss led about speed status on tl-wr1043nd
设置transmission-daemon alt-speed功能，短按会激活alt-speed,长按会禁用alt-speed，同时会点亮qss灯显示速度状态（tl-wr1043nd）
Edit your alt-speed limits from transmission-daemon , settings.json file.To execute script, you need to install transmission-remote package from opkg.
uci add system button uci set system.@button[-1].button=BTN_1 uci set system.@button[-1].action=pressed uci set system.@button[-1].handler='transmission-remote -as' uci add system button uci set system.@button[-1].button=BTN_1 uci set system.@button[-1].action=pressed uci set system.@button[-1].handler='echo 1 > /sys/class/leds/tl-wr1043nd:green:qss/brightness' #关灯 uci add system button uci set system.@button[-1].button=BTN_1 uci set system.@button[-1].action=released uci set system.@button[-1].handler='transmission-remote -AS' uci set system.@button[-1].min=1 uci set system.@button[-1].max=4 uci add system button uci set system.@button[-1].button=BTN_1 uci set system.@button[-1].action=released uci set system.@button[-1].handler='echo 0 > /sys/class/leds/tl-wr1043nd:green:qss/brightness' #开灯 uci set system.@button[-1].min=1 uci set system.@button[-1].max=4 uci commit system
Leftovers from a previous version 上个版本的遗留问题
mkdir -p /etc/hotplug.d/button touch /etc/hotplug.d/button/00-button
if [ "$ACTION" = "pressed" ]; then if [ "$BUTTON" = "BTN_0" ]; then BTN_0 elif [ "$BUTTON" = "BTN_1" ]; then BTN_1 fi fi
mkdir -p /etc/hotplug.d/button wget -O /etc/hotplug.d/button/00-button http://dev.openwrt.org/export/21216/trunk/target/linux/atheros/base-files/etc/hotplug.d/button/00-button wget -O http://dev.openwrt.org/export/21216/trunk/target/linux/atheros/base-files/etc/hotplug.d/button/00-button
#!/bin/sh [ "$BUTTON" = "BTN_1" ] && [ "$ACTION" = "pressed" ] && { SW=$(uci get wireless.@wifi-device[0].disabled) [ $SW == '0' ] && uci set wireless.@wifi-device[0].disabled=1 [ $SW == '0' ] || uci set wireless.@wifi-device[0].disabled=0 wifi }
WR1043ND
If you decide to use the wifitoggle package, you will need to change a few things on the default configuration. The following will work and make the QSS led blink "slowly" when wifi is on:
如果你决定使用wifitoggle软件，你需要修改一些默认配置，下面命令会在wifi开启的时候让qss灯慢速闪烁
uci show wifitoggle uci set wifitoggle.@wifitoggle[0]=wifitoggle uci set wifitoggle.@wifitoggle[0].led_enable_trigger=timer uci set wifitoggle.@wifitoggle[0].persistent=1 uci set wifitoggle.@wifitoggle[0].button=BTN_1 uci set wifitoggle.@wifitoggle[0].led_sysfs=tl-wr1043nd:green:qss uci set wifitoggle.@wifitoggle[0].led_enable_delayon=2000 uci set wifitoggle.@wifitoggle[0].led_disable_default=1 uci set wifitoggle.@wifitoggle[0].led_enable_delayoff=3000 uci set wifitoggle.@wifitoggle[0].timer=0
You can probably get similar behaviour with phy0tpt trigger.
triggerhappy
To manage the router buttons and also other HID buttons (i.e pad buttons of an usb device) we can use an application like triggerhappy.
First list your available buttons: 列出你的可用的按键
thd --dump /dev/input/event*press your buttons 按下按键
EV_KEY KEY_WPS_BUTTON 1 /dev/input/event0
# KEY_WPS_BUTTON 1 command
EV_KEY KEY_WPS_BUTTON 0 /dev/input/event0
# KEY_WPS_BUTTON 0 command
EV_KEY KEY_VOLUMEDOWN 1 /dev/input/event1
# KEY_VOLUMEDOWN 1 command
EV_KEY KEY_VOLUMEDOWN 0 /dev/input/event1
# KEY_VOLUMEDOWN 0 command
Now associate your buttons to commands or scripts
path /etc/triggerhappy/triggers.d/example.conf
KEY_WPS_BUTTON 1 /etc/mywifiscript.sh KEY_VOLUMEUP 1 amixer -q set Speaker 3%+ KEY_VOLUMEDOWN 1 amixer -q set Speaker 3%-and run triggerhappy
/etc/init.d/triggerhappy start
cmdpad is another simpler application to manage buttons.